first commit

src-backend/competition/admin.py

@@ -0,0 +1,53 @@
+from django.contrib import admin
+
+from .models import Competition, ActivityGoal, Team, Award
+from custom_user.models import CustomUser
+
+# Register your models here.
+class ActivityGoalInline(admin.TabularInline):
+    """Table of Competition ActivityGoal"""
+
+    model = ActivityGoal
+    fk_name = "competition"
+    can_delete = False
+    extra = 0
+
+
+class AwardsInline(admin.TabularInline):
+    """Table of Awards"""
+
+    model = Award
+    fk_name = "competition"
+    can_delete = False
+    extra = 0
+
+
+class TeamInline(admin.TabularInline):
+    """Table of Competition teams"""
+
+    model = Team
+    fk_name = "competition"
+    can_delete = False
+    extra = 0
+
+
+
+@admin.register(Competition)
+class CompetitionAdmin(admin.ModelAdmin):
+    """Admin view of Competition - the highest level e.g. Football World Cup 2024"""
+
+    def has_delete_permission(self, request, obj=None):
+        """Block admins form deleting a Tournament"""
+        return False
+
+    list_display = [
+        "name",
+        "start_date",
+        "end_date",
+    ]
+    inlines = [
+        ActivityGoalInline,
+        AwardsInline,
+        TeamInline,
+    ]
+

src-backend/competition/apps.py

@@ -0,0 +1,6 @@
+from django.apps import AppConfig
+
+
+class CompetitionConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'competition'

src-backend/competition/models.py

@@ -0,0 +1,231 @@
+import time, re, random
+from decimal import Decimal
+
+from django.db import models
+from django.db.models.signals import post_save
+from django.dispatch import receiver
+from django.core.validators import MinLengthValidator, RegexValidator
+from django.core.exceptions import ValidationError
+
+from workouts.models import Workout, SPORT_TYPE_GROUPS, SPORT_TYPES
+from custom_user.models import CustomUser
+from .scorer import trigger_goal_change, trigger_competition_change
+
+# Create your models here.
+COMPETITION_METRCIS = [
+    ('min', 'Time (Minutes)'),
+    ('num', 'Number of times (x)'),
+    ('kcal', 'Calories (Kcal)'),
+    ('km', 'Distance (Km)'),
+    ('kj', 'Effort (Kilojoules)'),
+]
+
+POINT_REF_PERIODS = [
+    ('day', 'daily'),
+    ('week', 'weekly'),
+    ('month', 'monthly'),
+    ('year', 'yearly'),
+    ('competition', 'competition end'),
+]
+
+
+class Competition(models.Model):
+    """Competition users can compete in"""
+
+    owner = models.ForeignKey(CustomUser, on_delete=models.CASCADE, null=False, blank=False)
+
+    name = models.CharField(null=False, max_length=60)
+    start_date = models.DateField(null=False)
+    end_date = models.DateField(null=False)
+    has_teams = models.BooleanField(default=False)
+    organizer_assigns_teams = models.BooleanField(default=False)
+
+    join_code = models.CharField(
+        blank=False,
+        null=False,
+        max_length=20,
+        validators=[
+            MinLengthValidator(10),
+            RegexValidator(r'^[a-zA-Z0-9]+$', message="Only letters and numbers allowed"),
+        ],
+        unique=True,
+    )
+
+    @property
+    def start_date_fmt(self):
+        return self.start_date.strftime("%a, %b %-d")
+
+    @property
+    def start_date_epoch(self):
+        return int(time.mktime(self.start_date.timetuple()))
+
+    @property
+    def end_date_fmt(self):
+        return self.end_date.strftime("%a, %b %-d")
+
+    @property
+    def end_date_epoch(self):
+        return int(time.mktime(self.end_date.timetuple()))
+
+    def __str__(self):
+        """str print-out of model entry"""
+        return f"{self.name} ({self.start_date} - {self.end_date})"
+
+    def __init__(self, *args, **kwargs):
+        """ save initial field values to be able to detect changes """
+        super().__init__(*args, **kwargs)
+        self._original = self._dict()
+
+    #@property
+    def _dict(self):
+        """ dict of current fields and values - to detect changes """
+        return {f.name: round(float(self.__dict__[f.attname]), 2) if isinstance(self.__dict__.get(f.attname), (Decimal, float)) else self.__dict__.get(f.attname) for f in self._meta.fields}
+
+    def get_changed_fields(self):
+        """ check which fields have changed """
+        current = self._dict()
+        return {
+            k: (v, current.get(k))
+            for k, v in self._original.items()
+            if v != current.get(k)
+        }
+
+    def save(self, *args, **kwargs):
+        """ trigger recalculation of points_capped if competition changes """
+        is_create = self.pk is None
+        if self.join_code == '':
+            self.join_code = re.sub(r'[^a-zA-Z0-9]', '', self.name)[:8] + str(self.owner.pk).zfill(3) + str(random.randint(10_000, 99_999))
+        self.join_code = self.join_code.upper()
+        super().save(*args, **kwargs)
+        changed = self.get_changed_fields()
+        trigger_competition_change(
+            instance=self,
+            new=is_create,
+            changes=changed
+        )
+        self._original = self._dict()  # reset
+
+        # add default activity goals if new competition
+        if is_create:
+            ActivityGoal(name ='Exercise', competition = self, metric = 'min', goal = 150, period = 'week', max_per_day = 60, max_per_week = 240).save()  # WHO recommends at least 75-150 min vigorous activity per week (capped at 4h)
+            ActivityGoal(name='Move', competition=self, metric='kcal', goal=1_800, period='week', max_per_day=1_000, max_per_week=3_000).save()  # 12kcal per minute
+            self.owner.my_competitions.add(self) # add owner as participant
+
+
+class Team(models.Model):
+    """Competition teams users can join"""
+
+    competition = models.ForeignKey(Competition, on_delete=models.CASCADE, null=False, blank=False)
+
+    name = models.CharField(null=False, max_length=60)
+
+    def clean(self):
+        super().clean()
+        #self.validate_members()
+
+
+    # ToDo: Check if user is participant in competition he/she whats to join the team of
+    #def validate_members(self):
+    #    if self.competition.pk not in [member.competition.pk for member in self.members]:
+    #        raise ValidationError({'member': 'User must have joined competition to be a team member of team.'})
+
+    def __str__(self):
+        """str print-out of model entry"""
+        return f"{self.competition} - Team: {self.name}"
+
+
+class ActivityGoal(models.Model):
+    """Activity goals in Competition - user will earn points for each rule/category"""
+
+    competition = models.ForeignKey(Competition, on_delete=models.CASCADE, null=False, blank=False)
+
+    name = models.CharField(null=False, max_length=60)
+
+    metric = models.CharField(null=False, max_length=4, choices=COMPETITION_METRCIS)
+    goal = models.DecimalField(null=False, max_digits=10, decimal_places=2)
+    period = models.CharField(null=False, max_length=12, default='day', choices=POINT_REF_PERIODS)
+
+    count_steps_as_walks = models.BooleanField(default=True)
+
+    min_per_workout = models.DecimalField(null=True, blank=True, max_digits=10, decimal_places=2)
+    max_per_workout = models.DecimalField(null=True, blank=True, max_digits=10, decimal_places=2)
+    min_per_day = models.DecimalField(null=True, blank=True, max_digits=10, decimal_places=2)
+    max_per_day = models.DecimalField(null=True, blank=True, max_digits=10, decimal_places=2)
+    min_per_week = models.DecimalField(null=True, blank=True, max_digits=10, decimal_places=2)
+    max_per_week = models.DecimalField(null=True, blank=True, max_digits=10, decimal_places=2)
+
+    def __str__(self):
+        """str print-out of model entry"""
+        return f"{self.competition}: {self.name} ({self.goal} {self.metric})"
+
+    def __init__(self, *args, **kwargs):
+        """ save initial field values to be able to detect changes """
+        super().__init__(*args, **kwargs)
+        self._original = self._dict()
+
+    #@property
+    def _dict(self):
+        """ dict of current fields and values - to detect changes """
+        return {f.name: round(float(self.__dict__[f.attname]), 2) if isinstance(self.__dict__.get(f.attname), (Decimal, float)) else self.__dict__.get(f.attname) for f in self._meta.fields}
+
+    def get_changed_fields(self):
+        """ check which fields have changed """
+        current = self._dict()
+        return {
+            k: (v, current.get(k))
+            for k, v in self._original.items()
+            if v != current.get(k)
+        }
+
+    def save(self, *args, **kwargs):
+        """ trigger recalculation of points_capped if goal changes """
+        is_create = self.pk is None
+        super().save(*args, **kwargs)
+        changed = self.get_changed_fields()
+        trigger_goal_change(
+            instance=self,
+            new=is_create,
+            changes=changed
+        )
+        self._original = self._dict()  # reset
+
+
+
+
+class Award(models.Model):
+    """Awards in Competition - user can earn points for comppleting awards"""
+
+    competition = models.ForeignKey(Competition, on_delete=models.CASCADE, null=False, blank=False)
+
+    name = models.CharField(null=False, max_length=60)
+    sport = models.CharField(null=False, default='GROUP_ANY', max_length=40, choices=SPORT_TYPE_GROUPS + SPORT_TYPES)
+    threshold = models.DecimalField(null=False, max_digits=10, decimal_places=2)
+    period = models.CharField(null=False, max_length=12, default='day', choices=POINT_REF_PERIODS)
+    reward_points = models.IntegerField(null=False)
+
+    def __str__(self):
+        """str print-out of model entry"""
+        return f"{self.competition}: {self.name} ({self.reward_points} {self.period})"
+
+
+
+class Points(models.Model):
+    """Points earned for User's Workout for this category or award"""
+
+    goal = models.ForeignKey(ActivityGoal, on_delete=models.CASCADE, null=True, blank=True)
+    award = models.ForeignKey(Award, on_delete=models.CASCADE, null=True, blank=True)
+    workout = models.ForeignKey(Workout, on_delete=models.CASCADE, null=False, blank=False)
+
+    points_raw = models.DecimalField(null=False, max_digits=10, decimal_places=2)
+    points_capped = models.DecimalField(null=True, max_digits=10, decimal_places=2)
+
+    class Meta:
+        verbose_name = "Points"
+        verbose_name_plural = "Points"
+        constraints = [
+            models.UniqueConstraint(fields=['goal', 'award', 'workout'], name='unique_goal_award_workout')
+        ]
+
+    def __str__(self):
+        """str print-out of model entry"""
+        return f"{self.award if self.goal is None else self.goal} - {self.points_raw}"

src-backend/competition/scorer.py

@@ -0,0 +1,204 @@
+import datetime
+from django.apps import apps
+
+from custom_user.point_recalc import trigger_recalc_points
+
+
+def _calculate_points_raw(goal, workout, user):
+    goal_metric = goal.metric
+    goal_target = float(goal.goal)
+
+    if goal_metric == 'min':
+        if workout.duration is None or workout.duration == '':
+            points = 0
+        else:
+            points = float(workout.duration.total_seconds()) / 60 / goal_target
+    elif goal_metric == 'num':
+        points = 1 / goal_target
+    elif goal_metric == 'kcal':
+        if workout.kcal is None or workout.kcal == '':
+            points = 0
+        else:
+            points = float(workout.kcal) / (goal_target * float(user.scaling_kcal))
+    elif goal_metric == 'km':
+        if workout.distance is None or workout.distance == '':
+            points = 0
+        else:
+            points = float(workout.distance) / (goal_target * float(user.scaling_distance))
+    elif goal_metric == 'kj':
+        if workout.kcal is None or workout.kcal == '':
+            points = 0
+        else:
+            points = float(workout.kcal) * 4.18 / (goal_target * float(user.scaling_kcal))
+    return points * 100
+
+
+def trigger_workout_delete(instance):
+    RecalcRequest = apps.get_model('custom_user', 'RecalcRequest')
+    for points in instance.points_set.all():
+        RecalcRequest(user=instance.user, goal=points.goal, start_datetime=instance.start_datetime).save()
+    print(f"Workout ({instance.pk}) deletion triggered point cap recalc - after {instance.start_datetime.isoformat()}")
+
+    trigger_recalc_points()
+
+
+def trigger_workout_change(instance, new, changes):
+
+    RecalcRequest = apps.get_model('custom_user', 'RecalcRequest')
+
+    if new:
+        # newly created workout - add point entries
+        Points = apps.get_model('competition', 'Points')
+        start_datetime = datetime.datetime.strptime(instance.start_datetime, '%Y-%m-%dT%H:%M:%SZ') if type(instance.start_datetime) is str else instance.start_datetime
+        for competition in instance.user.my_competitions.filter(start_date__lte=start_datetime, end_date__gte=start_datetime):
+            for goal in competition.activitygoal_set.all():
+                if goal.count_steps_as_walks or instance.sport_type != 'Steps':
+                    points = _calculate_points_raw(goal=goal, workout=instance, user=instance.user)
+                    Points(goal=goal, workout=instance, points_raw=points, points_capped=points).save()
+                    RecalcRequest(user=instance.user, goal=goal, start_datetime=start_datetime).save()
+    else:
+        # updated existing workout
+        # check if relevant field was changed
+        metric_change_lst = []
+        if 'start_datetime' in changes:
+            metric_change_lst.extend(['min', 'num', 'kcal', 'km', 'kj'])
+        if 'duration' in changes:
+            metric_change_lst.extend(['min'])
+        if 'kcal' in changes:
+            metric_change_lst.extend(['kcal', 'kj'])
+        if 'distance' in changes:
+            metric_change_lst.extend(['km'])
+
+        recalc_start_datetime = changes.get('start_datetime', [instance.start_datetime])[0]
+        for recalc_points, recalc_goal in [(i, i.goal) for i in instance.points_set.all() if i.goal.metric in metric_change_lst]:
+            points = _calculate_points_raw(goal=recalc_goal, workout=instance, user=instance.user)
+            setattr(recalc_points, 'points_raw', points)
+            setattr(recalc_points, 'points_capped', points)
+            recalc_points.save()
+            RecalcRequest(user=instance.user, goal=recalc_goal, start_datetime=recalc_start_datetime).save()
+
+    print(f"Workout ({instance.pk}) update triggered point cap recalc - {'NEW ENTRY' if new else 'EXISTING CHANGED'}" + ("" if new else f" - {changes}"))
+
+    trigger_recalc_points()
+
+
+def trigger_goal_change(instance, new, changes):
+    RecalcRequest = apps.get_model('custom_user', 'RecalcRequest')
+    Points = apps.get_model('competition', 'Points')
+    Workout = apps.get_model('workouts', 'Workout')
+    if new:
+        # newly created goal - add point entries
+        workout_lst = Workout.objects.filter(start_datetime__gte=instance.competition.start_date, start_datetime__lte=instance.competition.end_date + datetime.timedelta(days=1), user__in=instance.competition.user.all())
+        if instance.count_steps_as_walks is False:
+            workout_lst = workout_lst.exclude(sport_type='Steps')
+        for workout in workout_lst:
+            points = _calculate_points_raw(goal=instance, workout=workout, user=workout.user)
+            Points(goal=instance, workout=workout, points_raw=points, points_capped=points).save()
+            RecalcRequest(user=workout.user, goal=instance, start_datetime=workout.start_datetime).save()
+    else:
+        # updated existing workout
+        # check if relevant field was changed
+        _ = changes.pop('name', None)
+        if len(changes) > 0:
+            if 'count_steps_as_walks' in changes:
+                # add steps
+                if changes['count_steps_as_walks'][1]:
+                    for workout in Workout.objects.filter(start_datetime__gte=instance.competition.start_date, start_datetime__lte=instance.competition.end_date + datetime.timedelta(days=1), user__in=instance.competition.user.all(), sport_type='Steps'):
+                        points = _calculate_points_raw(goal=instance, workout=workout, user=workout.user)
+                        Points(goal=instance, workout=workout, points_raw=points, points_capped=points).save()
+                # remove steps
+                else:
+                    for point in instance.points_set.filter(workout__sport_type='Steps'):
+                        point.delete()
+            for user in instance.competition.user.all():
+                RecalcRequest(user=user, goal=instance, start_datetime=instance.competition.start_date).save()
+
+    trigger_recalc_points()
+
+
+def trigger_competition_change(instance, new, changes):
+    Points = apps.get_model('competition', 'Points')
+    RecalcRequest = apps.get_model('custom_user', 'RecalcRequest')
+    Workout = apps.get_model('workouts', 'Workout')
+
+    # newly created competitions are ignored as only relevant if new goals are created
+    # only catching changes of the start_date and end_date below
+
+    if 'start_date' in changes:
+        if changes['start_date'][1] < changes['start_date'][0]:
+            # add point entries before changes['start_date'][0] till [1]
+            for goal in instance.activitygoal_set.all():
+                for workout in Workout.objects.filter(start_datetime__gte=changes['start_date'][1], start_datetime__lte=changes['start_date'][0], user__in=instance.user.all()):
+                    points = _calculate_points_raw(goal=goal, workout=workout, user=workout.user)
+                    Points(goal=goal, workout=workout, points_raw=points, points_capped=points).save()
+                    RecalcRequest(user=workout.user, goal=goal, start_datetime=workout.start_datetime).save()
+            print(f"Competition ({instance.pk}) start_date was extended from {changes['start_date'][0]} to {changes['start_date'][1]} triggering point cap recalc")
+        else:
+            # remove point entries before changes['start_date'][1]
+            points_to_delete = Points.objects.filter(goal__competition=instance, workout__start_datetime__lt=changes['start_date'][1])
+            CustomUser = apps.get_model('custom_user', 'CustomUser')
+            ActivityGoal = apps.get_model('competition', 'ActivityGoal')
+            for user in [CustomUser.objects.get(pk=i) for i in set(points_to_delete.values_list('workout__user', flat=True))]:
+                for goal in [ActivityGoal.objects.get(pk=i) for i in set(points_to_delete.values_list('goal', flat=True))]:
+                    RecalcRequest(user=user, goal=goal, start_datetime=changes['start_date'][1]).save()
+            points_to_delete.delete()
+            print(f"Competition ({instance.pk}) start_date was shortened from {changes['start_date'][0]} to {changes['start_date'][1]} triggering point cap recalc")
+
+        trigger_recalc_points
+
+    if 'end_date' in changes:
+        if changes['end_date'][1] > changes['end_date'][0]:
+            # add point entries after changes['end_date'][0] till [1]
+            for goal in instance.activitygoal_set.all():
+                for workout in Workout.objects.filter(start_datetime__gte=changes['end_date'][0] + datetime.timedelta(days=1), start_datetime__lte=changes['end_date'][1] + datetime.timedelta(days=1), user__in=instance.user.all()):
+                    points = _calculate_points_raw(goal=goal, workout=workout, user=workout.user)
+                    Points(goal=goal, workout=workout, points_raw=points, points_capped=points).save()
+                    RecalcRequest(user=workout.user, goal=goal, start_datetime=workout.start_datetime).save()
+            print(f"Competition ({instance.pk}) end_date was extended from {changes['end_date'][0]} to {changes['end_date'][1]} triggering point cap recalc")
+        else:
+            # remove point entries after changes['end_date'][1]
+            Points.objects.filter(goal__competition=instance, workout__start_datetime__gt=changes['end_date'][1]).delete()
+            print(f"Competition ({instance.pk}) end_date was shortened from {changes['end_date'][0]} to {changes['end_date'][1]} NOT triggering point cap recalc")
+
+        trigger_recalc_points()
+
+
+def trigger_user_change(instance, new, changes):
+    Points = apps.get_model('competition', 'Points')
+    RecalcRequest = apps.get_model('custom_user', 'RecalcRequest')
+
+    # check if user leaves or joins a competition
+    if 'my_competitions' in changes:
+        # instance user obj / changes = pk_set comp id to add/remove
+        if changes['my_competitions'][0] is None:
+            # add/join competition
+            Workout = apps.get_model('workouts', 'Workout')
+            Competition = apps.get_model('competition', 'Competition')
+            for competition in Competition.objects.filter(pk__in=changes['my_competitions'][1]):
+                workout_lst = Workout.objects.filter(user=instance, start_datetime__gte=competition.start_date, start_datetime__lte=competition.end_date + datetime.timedelta(days=1))
+                for goal in competition.activitygoal_set.all():
+                    for workout in workout_lst:
+                        points = _calculate_points_raw(goal=goal, workout=workout, user=instance)
+                        Points(goal=goal, workout=workout, points_raw=points, points_capped=points).save()
+                    RecalcRequest(user=instance, goal=goal, start_datetime=competition.start_date).save()
+            print(f"User ({instance.pk}) join competitions {changes['my_competitions'][1]} triggering point cap recalc")
+        else:
+            # remove/leave competition
+            Points.objects.filter(goal__competition__in=changes['my_competitions'][0], workout__user=instance).delete()
+            print(f"User ({instance.pk}) left competitions {changes['my_competitions'][0]} NOT triggering point cap recalc")
+
+        trigger_recalc_points()
+
+    # check if equalizing / scaling factors were changed
+    if 'scaling_distance' in changes or 'scaling_kcal' in changes:
+        goal_metrics = (['km'] if 'scaling_distance' in changes else []) + (['kcal', 'kj'] if 'scaling_kcal' in changes else [])
+        recalc_points = Points.objects.filter(goal__metric__in=goal_metrics, workout__user=instance)
+
+        for recalc_point in recalc_points:
+            points = _calculate_points_raw(goal=recalc_point.goal, workout=recalc_point.workout, user=instance)
+            setattr(recalc_point, 'points_raw', points)
+            setattr(recalc_point, 'points_capped', points)
+            recalc_point.save()
+            RecalcRequest(user=instance, goal=recalc_point.goal, start_datetime=recalc_point.workout.start_datetime).save()
+
+        print(f"User ({instance.pk}) scaling factors {goal_metrics} changed triggering point cap recalc")

src-backend/competition/serializers.py

@@ -0,0 +1,57 @@
+from rest_framework import serializers
+from custom_user.models import CustomUser
+from .models import Competition, ActivityGoal, Team, Points
+
+
+class CompetitionSerializer(serializers.ModelSerializer):
+    owner = serializers.PrimaryKeyRelatedField(
+        queryset=CustomUser.objects.all(),
+        required=False
+    )
+    user_info = serializers.SerializerMethodField()
+
+    class Meta:
+        model = Competition
+        fields = ['id', 'owner', 'user', 'user_info', 'name', 'start_date', 'start_date_fmt', 'start_date_epoch', 'end_date', 'end_date_fmt', 'end_date_epoch', 'has_teams', 'organizer_assigns_teams', 'join_code']
+        read_only_fields = ['join_code', 'user', 'user_info']
+
+    def get_user_info(self, obj):
+        # Assuming `obj.user` is a ManyToMany or related manager
+        users = obj.user.all().order_by('username') if hasattr(obj.user, 'all') else [obj.user]
+        return [{'id': u.id, 'username': u.username} for u in users]
+
+
+class TeamSerializer(serializers.ModelSerializer):
+    user_info = serializers.SerializerMethodField()
+    my = serializers.SerializerMethodField()
+
+    class Meta:
+        model = Team
+        fields = ['id', 'name', 'competition', 'user', 'user_info', 'my']
+        read_only_fields = ['user', 'user_info', 'my']
+
+    def get_user_info(self, obj):
+        # Assuming `obj.user` is a ManyToMany or related manager
+        users = obj.user.all().order_by('username') if hasattr(obj.user, 'all') else [obj.user]
+        return [{'id': u.id, 'username': u.username} for u in users]
+
+    def get_my(self, obj):
+        # if it is the user's team
+        request = self.context.get('request')
+        if request and hasattr(request, "user"):
+            return obj.user.filter(id=request.user.id).exists()
+        return False
+
+
+class ActivityGoalSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = ActivityGoal
+        fields = '__all__'
+        read_only_fields = []
+
+
+class PointsSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Points
+        fields = ['id', 'goal', 'award', 'workout', 'points_raw', 'points_capped']
+        read_only_fields = []

src-backend/competition/stats.py

@@ -0,0 +1,169 @@
+import datetime
+
+from django.conf import settings
+from django.apps import apps
+from rest_framework.response import Response
+from rest_framework import status
+
+from django.db.models import Sum, Count, ExpressionWrapper, DurationField, F, Q, IntegerField
+from django.db.models.functions import TruncDay, Now, ExtractDay
+
+
+def _add_rank(data, key, enhance_dict, id_field, rank_field='rank', reverse=True):
+    sorted_data = sorted(data, key=lambda x: x[key], reverse=reverse)
+    rank = 0
+    last_value = None
+    user_lst = []
+    for idx, item in enumerate(sorted_data, start=1):
+        if item[key] != last_value:
+            rank = idx
+            last_value = item[key]
+        sorted_data[idx-1] = {**item, rank_field: rank, **enhance_dict[item[id_field]]}
+        enhance_dict[item[id_field]]['rank'] = rank
+        enhance_dict[item[id_field]]['points'] = item[key]
+        user_lst.append(item[id_field])
+    for i in [i for i in enhance_dict.keys() if i not in user_lst]:
+        sorted_data.append({**enhance_dict[i], rank_field: None, key: None})
+        enhance_dict[i]['rank'] = None
+        enhance_dict[i]['points'] = None
+    return sorted_data
+
+
+def get_competition_stats(competition, last_seven_days=False):
+    CustomUser = apps.get_model('custom_user', 'CustomUser')
+    Competition = apps.get_model('competition', 'Competition')
+    Points = apps.get_model('competition', 'Points')
+    Team = apps.get_model('competition', 'Team')
+
+    # Custom query logic
+    try:
+        competition_obj = Competition.objects.get(id=competition)
+    except Competition.DoesNotExist:
+        return Response({"detail": "Competition not found."}, status=status.HTTP_404_NOT_FOUND)
+    all_points = Points.objects.filter(Q(award__competition__id=competition) | Q(goal__competition_id=competition))
+
+    if last_seven_days:
+        today = datetime.date.today()
+        last_sunday = today - datetime.timedelta(days=today.weekday() + 1) if today.weekday() != 6 else today
+        monday_before = last_sunday - datetime.timedelta(days=6)
+        all_points = all_points.filter(workout__start_datetime__gte=monday_before, workout__start_datetime__lt=last_sunday + datetime.timedelta(days=1))
+
+    # For SQLite
+    if settings.DATABASES.get('default', {}).get('ENGINE') == 'django.db.backends.sqlite3':
+        all_points_date = (
+            all_points
+            .annotate(date=TruncDay('workout__start_datetime'))
+            .annotate(tmp_today=TruncDay(Now()))
+            .annotate(tmp_start_date=TruncDay(F('workout__start_datetime')))
+            .annotate(days_ago=ExpressionWrapper((F('tmp_today') - F('tmp_start_date')) / 86_400_000_000, output_field=IntegerField()))
+        )
+    # For Postgres
+    else:
+        all_points_date = (
+            all_points
+            .annotate(date=TruncDay('workout__start_datetime'))
+            .annotate(days_ago_duration=ExpressionWrapper(TruncDay(Now()) - TruncDay(F('workout__start_datetime')), output_field=DurationField()))
+            .annotate(days_ago=ExtractDay(F('days_ago_duration')))
+        )
+    tmp_all = (
+        all_points_date
+        .values('days_ago')
+        .annotate(total=Sum('points_capped'))
+        .values('days_ago', 'total')
+        .order_by('-days_ago')
+    )
+    timeseries_all = {}
+    for i in tmp_all:
+        days_ago = i.pop('days_ago')
+        timeseries_all[days_ago] = i
+
+    tmp_user = (
+        all_points_date
+        .values('days_ago', 'workout__user__id')
+        .annotate(total=Sum('points_capped'))
+        .order_by('-days_ago')
+    )
+    timeseries_user = {}
+    for i in tmp_user:
+        user_id = i.pop('workout__user__id')
+        days_ago = i.pop('days_ago')
+        if user_id not in timeseries_user:
+            timeseries_user[user_id] = {}
+        timeseries_user[user_id][days_ago] = i
+
+    tmp_team = (
+        all_points_date
+        .values('days_ago', 'workout__user__my_teams')
+        .annotate(total=Sum('points_capped'))
+        .order_by('-days_ago')
+    )
+    timeseries_team = {}
+    for i in tmp_team:
+        team_id = i.pop('workout__user__my_teams')
+        days_ago = i.pop('days_ago')
+        if team_id not in timeseries_team:
+            timeseries_team[team_id] = {}
+        timeseries_team[team_id][days_ago] = i
+
+    # Get user data
+    user_dict = {i['id']: i for i in CustomUser.objects.filter(my_competitions=competition).values('id', 'username', 'strava_allow_follow', 'strava_athlete_id').order_by('username', 'id')}
+    for key, value in user_dict.items():
+        if value['strava_allow_follow'] is False:
+            value['strava_athlete_id'] = None
+
+    # Get user rankings
+    leaderboard_user = (
+        all_points
+        .values('workout__user__id')
+        .annotate(total_capped=Sum('points_capped'))
+        .order_by('-total_capped')
+    )
+    leaderboard_user = _add_rank(leaderboard_user, key="total_capped", enhance_dict=user_dict, id_field='workout__user__id')
+    leaderboard_user_dict = {i['id']: i for i in leaderboard_user}
+
+    # Get team data
+    team_dict = {i.id: {'id': i.id, 'name': i.name, 'members': [leaderboard_user_dict.get(i.id, {'id': i.id, 'username': 'ERROR', 'total_capped': None}) for i in i.user.all()]} for i in Team.objects.filter(competition=competition).prefetch_related('user')}
+    for key, value in team_dict.items():
+        value['active_member_count'] = sum(1 for i in value.get('members', []) if i.get('total_capped', 0) is not None and i.get('total_capped', 0) > 0)
+        value['member_count'] = len(value.get('members', []))
+
+    # Get team rankings
+    leaderboard_team = (
+        all_points
+        .values('workout__user__my_teams__id')
+        .annotate(total_capped=Sum('points_capped'))
+        .order_by('-total_capped')
+    )
+    leaderboard_team = [{**i, 'total_capped': i['total_capped'] / max(1, team_dict[i['workout__user__my_teams__id']]['active_member_count'])} for i in leaderboard_team if i['workout__user__my_teams__id'] in team_dict]
+    leaderboard_team = _add_rank(leaderboard_team, key="total_capped", enhance_dict=team_dict, id_field='workout__user__my_teams__id')
+    team_dict = {i['id']: i for i in leaderboard_team}
+
+    competition_details = {
+        'name': competition_obj.name,
+        'owner': user_dict.get(competition_obj.owner.pk, {'id': competition_obj.owner.pk, 'username': 'ERROR', 'total_capped': None}),
+        'members': [user_dict.get(i, {'id': i, 'username': 'ERROR', 'total_capped': None}) for i in list(competition_obj.user.all().values_list('pk', flat=True))],
+        'member_count': competition_obj.user.all().count(),
+        'active_member_count': len(timeseries_user),
+        'start_date': competition_obj.start_date,
+        'start_date_count': (datetime.date.today() - competition_obj.start_date).days,
+        'end_date': competition_obj.end_date,
+        'end_date_count': (datetime.date.today() - competition_obj.end_date).days,
+        'has_teams': competition_obj.has_teams,
+        'goals': competition_obj.activitygoal_set.all().values(),
+    }
+
+    response_obj = {
+        'competition': competition_details,
+        'users': user_dict,
+        'teams': team_dict,
+        'timeseries': {
+            'all': timeseries_all,
+            'user': timeseries_user,
+            'team': timeseries_team,
+        },
+        'leaderboard': {
+            'team': leaderboard_team,
+            'individual': leaderboard_user,
+        }
+    }
+    return response_obj

src-backend/competition/tests.py

@@ -0,0 +1,3 @@
+from django.test import TestCase
+
+# Create your tests here.

src-backend/competition/views.py

@@ -0,0 +1,306 @@
+from django.conf import settings
+from django.db.models import Q
+from django.core.exceptions import PermissionDenied
+from rest_framework import viewsets
+from rest_framework.views import APIView
+from rest_framework.response import Response
+from rest_framework.permissions import AllowAny, IsAuthenticated
+from rest_framework import status
+from django.utils.decorators import method_decorator
+from django.views.decorators.cache import cache_page
+from rest_framework.permissions import BasePermission
+
+from django.db.models import Sum
+
+from custom_user.views import IsOwnerOrReadOnly
+from custom_user.models import CustomUser
+from custom_user.strava import sync_strava
+from custom_user.point_recalc import recalc_points
+from .models import Competition, Team, ActivityGoal, Points
+from .serializers import CompetitionSerializer, TeamSerializer, ActivityGoalSerializer, PointsSerializer
+from .stats import get_competition_stats
+
+from celery import current_app
+import json
+
+class CompetitionViewSet(viewsets.ModelViewSet):
+    #queryset = Competition.objects.all()
+    serializer_class = CompetitionSerializer
+
+    permission_classes = [IsOwnerOrReadOnly]
+
+    def get_queryset(self):
+        # return all competitions the user is owner of or a participant of
+        #time.sleep(3)  # throttle for testing
+        return Competition.objects.filter(Q(owner=self.request.user) | Q(user=self.request.user)).distinct().order_by('-end_date', '-start_date', '-id')
+
+    def perform_create(self, serializer):
+        # when creating a new competition, set the owner to the request user
+        serializer.save(owner=self.request.user)
+
+
+class TeamViewSet(viewsets.ModelViewSet):
+    #queryset = Team.objects.all()
+    serializer_class = TeamSerializer
+
+    permission_classes = [IsOwnerOrReadOnly]
+
+    def get_queryset(self):
+        # return all teams the user is a member of and all teams of competitions the user participates in
+        #time.sleep(3)  # throttle for testing
+        return Team.objects.filter(Q(user=self.request.user) | Q(competition__user=self.request.user)).distinct().order_by('name')
+
+    def perform_create(self, serializer):
+
+        competition_obj = serializer.validated_data.get('competition')
+
+        # if has_teams is disabled, don't allow creation of teams
+        if competition_obj.has_teams is False:
+            raise PermissionDenied("Teams are disabled for this competition.")
+
+        # only allow user to create a team if they are a member or owner of the competition
+        if not (competition_obj.owner == self.request.user) and not (competition_obj in self.request.user.my_competitions.all()):
+            raise PermissionDenied("You are not a participant of the competition you want to create a team for.")
+
+        serializer.save()
+
+
+class ActivityGoalViewSet(viewsets.ModelViewSet):
+    #queryset = ActivityGoal.objects.all()
+    serializer_class = ActivityGoalSerializer
+
+    permission_classes = [IsOwnerOrReadOnly]
+
+    def get_queryset(self):
+        # return all competition categories the user is owner of or a participant of
+        #time.sleep(3)  # throttle for testing
+        return ActivityGoal.objects.filter(Q(competition__owner=self.request.user) | Q(competition__user=self.request.user)).distinct().order_by('name')
+
+    def perform_create(self, serializer):
+        competition_obj = serializer.validated_data.get('competition')
+
+        # only allow user to create a team if they are a member or owner of the competition
+        if competition_obj.owner != self.request.user:
+            raise PermissionDenied("You can only create and edit competition goals if you are the owner.")
+
+        serializer.save()
+
+
+class PointsViewSet(viewsets.ModelViewSet):
+    #queryset = Points.objects.all()
+    serializer_class = PointsSerializer
+
+    permission_classes = [IsOwnerOrReadOnly]
+
+    def get_queryset(self):
+        # return all points the user is owner of, a participant of, or of his/her own workouts
+        #time.sleep(3)  # throttle for testing
+        return Points.objects.filter(Q(goal__competition__owner=self.request.user) | Q(goal__competition__user=self.request.user) | Q(workout__user=self.request.user)).distinct().order_by('-workout__start_datetime', '-workout__duration', '-workout', '-workout__user')
+
+
+class StatsPermissions(BasePermission):
+    def has_permission(self, request, view):
+        # Only authenticated users
+        if request.user.is_authenticated:
+            return True
+        return False
+
+    def has_object_permission(self, request, view, obj):
+        competition_lst = Competition.objects.filter(
+            Q(pk=view.kwargs.get('competition', 0)) & (Q(owner=request.user) | Q(user=request.user))
+        )
+        return len(competition_lst) > 0
+
+
+class IsAdmin(BasePermission):
+    """
+    Custom permission class to allow access only to admin users.
+    """
+    def has_permission(self, request, view):
+        # Check if user is authenticated and is an admin
+        return bool(request.user and request.user.is_authenticated and request.user.is_staff)
+
+
+class CeleryQueryView(APIView):
+    permission_classes = [IsAdmin]
+
+    def get(self, request, task_id=None):
+        if task_id:
+            # Get status of specific task
+            try:
+                task = current_app.AsyncResult(task_id)
+                return Response({
+                    'task_id': task.id,
+                    'status': task.status,
+                    'result': task.result if task.successful() else None,
+                    'error': str(task.result) if task.failed() else None
+                })
+            except Exception as e:
+                return Response(
+                    {"error": f"Error retrieving task status: {str(e)}"}, 
+                    status=status.HTTP_400_BAD_REQUEST
+                )
+        else:
+            # List all registered tasks
+            try:
+                registered_tasks = [
+                    name
+                    for name, task in sorted(current_app.tasks.items())
+                    if not name.startswith('celery.')
+                ]
+                return Response(registered_tasks)
+            except Exception as e:
+                return Response(
+                    {"error": f"Error retrieving tasks: {str(e)}"}, 
+                    status=status.HTTP_500_INTERNAL_SERVER_ERROR
+                )
+
+    def post(self, request):
+        task = request.query_params.get('task')
+        args = request.query_params.get('args', '[]')
+        kwargs = request.query_params.get('kwargs', '{}')
+        
+        if not task:
+            return Response(
+                {"error": "Task name is required"}, 
+                status=status.HTTP_400_BAD_REQUEST
+            )
+            
+        try:
+            # Convert string args and kwargs to Python objects
+            args_list = json.loads(args)
+            kwargs_dict = json.loads(kwargs)
+            
+            # Get the task by name and apply it with args and kwargs
+            celery_task = current_app.tasks[task]
+            result = celery_task.delay(*args_list, **kwargs_dict)
+            
+            return Response({
+                "task_id": result.task_id,
+                "status": "Task sent successfully"
+            })
+            
+        except json.JSONDecodeError:
+            return Response(
+                {"error": "Invalid JSON format in args or kwargs"}, 
+                status=status.HTTP_400_BAD_REQUEST
+            )
+        except KeyError:
+            return Response(
+                {"error": f"Task '{task}' not found"}, 
+                status=status.HTTP_400_BAD_REQUEST
+            )
+        except Exception as e:
+            return Response(
+                {"error": str(e)}, 
+                status=status.HTTP_500_INTERNAL_SERVER_ERROR
+            )
+
+
+class CompetitionStatsQueryView(APIView):
+    permission_classes = [StatsPermissions]
+
+    @method_decorator(cache_page(30))  # cache for 30 seconds
+    def get(self, request, competition):
+        response_obj = get_competition_stats(competition)
+        self.check_object_permissions(request, response_obj)
+        return Response(response_obj)
+
+
+class FeedPermissions(BasePermission):
+    def has_permission(self, request, view):
+        # Only authenticated users
+        if request.user.is_authenticated:
+            return True
+        return False
+
+    def has_object_permission(self, request, view, obj):
+        if len(obj) == 0:
+            return False
+        obj = obj[0]
+        return request.user.id in [obj.owner.pk] + list(obj.user.all().values_list('pk', flat=True))
+
+
+class FeedQueryView(APIView):
+    """ API view to get the activity/point feed for a competition. """
+    permission_classes = [FeedPermissions]
+
+    def get(self, request, competition):
+        # Custom query logic
+        #time.sleep(3)  # throttle for testing
+
+        competition_obj = Competition.objects.filter(id=competition)
+        self.check_object_permissions(request, competition_obj)
+
+        all_points = Points.objects.filter(Q(award__competition__id=competition) | Q(goal__competition_id=competition)).order_by('-workout__start_datetime', '-workout__steps', '-workout__duration', '-workout', '-workout__user')
+
+        grouped_points = {i['workout']: i for i in all_points.values('workout__user', 'workout__user__username', 'workout__user__strava_allow_follow', 'workout', 'workout__sport_type', 'workout__start_datetime', 'workout__duration', 'workout__steps', 'workout__strava_id', 'award').annotate(points_capped=Sum('points_capped'), points_raw=Sum('points_raw')).order_by('-workout__start_datetime', '-workout__duration', '-workout', '-workout__user')}
+
+        for i in all_points.values('workout', 'id', 'goal', 'goal__name', 'award', 'award__name', 'points_capped', 'points_raw'):
+            if 'details' not in grouped_points[i['workout']]:
+                grouped_points[i['workout']]['details'] = []
+            grouped_points[i['workout']]['details'].append(i)
+
+        return Response(list(grouped_points.values()))
+
+
+
+class JoinCompetitionView(APIView):
+    """ API post view for users to join a competition. """
+    permission_classes = [IsAuthenticated]
+
+    def post(self, request, join_code):
+        competition = Competition.objects.filter(join_code=join_code.upper())
+        if len(competition) == 0:
+            return Response({"message": "Invalid join code."}, status=status.HTTP_400_BAD_REQUEST)
+        competition = competition[0]
+        competition.user.add(request.user)
+        competition.save()
+        return Response({"message": "Successfully joined competition.", "competition": competition.id}, status=status.HTTP_200_OK)
+
+    def delete(self, request, join_code):
+        id = int(join_code)
+
+        request.user.my_competitions.remove(id)
+        teams = request.user.my_teams.filter(competition=id)
+        for team in teams:
+            team.user.remove(request.user)
+            team.save()
+        request.user.save()
+
+        points = Points.objects.filter((Q(award__competition__id=id) | Q(goal__competition_id=id)) & Q(workout__user=request.user))
+        points.delete()
+
+        return Response({"message": "Successfully left competition.", "competition": id}, status=status.HTTP_200_OK)
+
+
+class JoinTeamView(APIView):
+    """ API post view for users to join a team and make sure they are only a member of one team per competition. """
+    permission_classes = [IsAuthenticated]
+
+    def post(self, request):
+        team_id = request.query_params.get('team')
+        team = Team.objects.filter(id=team_id)
+        if len(team) == 0:
+            return Response({"message": "Invalid team id."}, status=status.HTTP_400_BAD_REQUEST)
+        team = team[0]
+
+        user_id = request.query_params.get('user', request.user.id)
+        user = CustomUser.objects.filter(id=user_id)
+        if len(user) == 0:
+            return Response({"message": "Invalid user id."}, status=status.HTTP_400_BAD_REQUEST)
+        user = user[0]
+
+        competition = team.competition
+        competition_teams = competition.team_set.all()
+
+        if user != request.user and request.user != competition.owner and len(competition_teams.filter(user=user)) > 0:
+            return Response({"message": "Unauthorized. You can only change your own team or add people to your team if they are currently in no team."}, status=status.HTTP_403_FORBIDDEN)
+
+        for competition_team in competition_teams:
+            competition_team.user.remove(user.id)
+            competition_team.save()
+        user.my_teams.add(team.id)
+        user.save()
+
+        return Response({"message": "Successfully joined team.", "team": team.id, "user": user.id}, status=status.HTTP_200_OK)

src-backend/custom_user/admin.py

@@ -0,0 +1,25 @@
+from django.contrib import admin
+
+from .models import CustomUser, RecalcRequest
+
+# Register your models here.
+@admin.register(CustomUser)
+class CustomUserAdmin(admin.ModelAdmin):
+    """Admin view of CustomUser"""
+
+    list_display = [
+        "username",
+        "first_name",
+        "last_name",
+    ]
+
+@admin.register(RecalcRequest)
+class RecalcRequestAdmin(admin.ModelAdmin):
+    """Admin view of RecalcRequest"""
+
+    list_display = [
+        "user",
+        "goal",
+        "start_datetime",
+        "done",
+    ]

src-backend/custom_user/api_rate_limiter.py

@@ -0,0 +1,71 @@
+# myapp/monitor.py
+from datetime import datetime, timezone
+from django.conf import settings
+
+
+class RateLimitExceeded(Exception):
+    """Raised when the API rate limit is exceeded."""
+    pass
+
+class APIRequestMonitor:
+    """ API request rate limiter"""
+    def __init__(self, limit_15min: int, limit_day: int):
+        self.limit_15min = limit_15min
+        self.limit_day = limit_day
+        self.current_15min_slot = self._get_15min_slot()
+        self.current_day = self._get_day()
+        self.count_15min = 0
+        self.count_day = 0
+
+    def _get_15min_slot(self):
+        now = datetime.now(timezone.utc)
+        return now.replace(minute=(now.minute // 15) * 15, second=0, microsecond=0)
+
+    def _get_day(self):
+        return datetime.now(timezone.utc).date()
+
+    def _maybe_reset_counters(self):
+        now_slot = self._get_15min_slot()
+        today = self._get_day()
+
+        if now_slot != self.current_15min_slot:
+            self.current_15min_slot = now_slot
+            self.count_15min = 0
+
+        if today != self.current_day:
+            self.current_day = today
+            self.count_day = 0
+
+    def log_request(self, response) -> bool:
+        self._maybe_reset_counters()
+        self.count_day += 1
+
+        if response.status_code == 429:
+            self.count_15min = self.limit_15min
+            raise RateLimitExceeded("API rate limit exceeded")
+
+        if self.count_15min >= self.limit_15min or self.count_day >= self.limit_day:
+            raise RateLimitExceeded("API rate limit probably exceeded")
+
+        self.count_15min += 1
+        print(f'Strava API Request (15min: {self.count_15min} / {self.limit_15min}, day: {self.count_day} / {self.limit_day})')
+        return True
+
+    def count_requests(self):
+        self._maybe_reset_counters()
+        return {
+            "requests_15min": self.count_15min,
+            "requests_today": self.count_day
+        }
+
+    def ok_workout_requests(self):
+        stats = self.count_requests()
+        return ((stats["requests_today"] <= self.limit_day * 0.8) & (stats["requests_15min"] <= self.limit_15min * 0.66))
+
+    def ok_linkage_requests(self):
+        stats = self.count_requests()
+        return ((stats["requests_today"] <= self.limit_day) & (stats["requests_15min"] <= self.limit_15min))
+
+
+# Singleton instance
+strava_api_monitor = APIRequestMonitor(limit_15min=settings.STRAVA_LIMIT_15MIN, limit_day=settings.STRAVA_LIMIT_DAY)

src-backend/custom_user/apps.py

@@ -0,0 +1,6 @@
+from django.apps import AppConfig
+
+
+class CustomUserConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'custom_user'

src-backend/custom_user/emails/celery_emails.py

@@ -0,0 +1,336 @@
+import datetime, random
+from openai import OpenAI
+from django.core.cache import cache
+from django.conf import settings
+from django.apps import apps
+from django.template.loader import render_to_string
+from workout_challenge.celery import app
+from django.db.models import Sum, Count, Q
+from django.db.models.functions import TruncDate, TruncDay
+
+from .multipurpose import send_email
+from competition.stats import get_competition_stats
+
+
+@app.task()
+def welcome_email(user_pk):
+    """Welcome email for new users."""
+    CustomUser = apps.get_model('custom_user', 'CustomUser')
+    user_obj = CustomUser.objects.get(pk=user_pk)
+
+    email_subject = 'Welcome to the Workout Challenge!'
+
+    email_body = render_to_string(
+        "email_welcome.html",
+        {
+            'first_name': user_obj.first_name,
+            'MAIN_HOST': settings.MAIN_HOST,
+            'EMAIL_REPLY_TO': settings.EMAIL_REPLY_TO[0] if settings.EMAIL_REPLY_TO is not None else settings.EMAIL_FROM,
+            'link_strava_note': user_obj.strava_refresh_token is None or user_obj.strava_refresh_token == '',
+        }
+    )
+
+    if settings.DEBUG:
+        with open('tmp_email.html', 'w') as file:
+            file.write(email_body)
+
+    send_email(subject=email_subject, body=email_body, to_email=user_obj.email)
+
+    return {'pk': user_obj.pk, 'username': user_obj.username, 'email': user_obj.email}
+
+
+@app.task()
+def send_all_log_workouts_email():
+    print("Scheduling log workout emails...")
+    CustomUser = apps.get_model('custom_user', 'CustomUser')
+    user_lst = CustomUser.objects.filter(
+        Q(my_competitions__start_date__lte=datetime.date.today()) &
+        Q(my_competitions__end_date__gte=datetime.date.today())
+    ).order_by('pk')
+    task_log = []
+    if len(user_lst) > 0:
+        eta_steps = max(min((60 * 60) // len(user_lst), 60), 10)
+        eta = datetime.datetime.now(datetime.timezone.utc) + datetime.timedelta(seconds=10)
+        for user_obj in user_lst:
+            result = log_workouts_email.apply_async(args=[user_obj.pk], eta=eta)
+            task_log.append({'pk': user_obj.pk, 'username': user_obj.username, 'email': user_obj.email, 'task_id': result.task_id, 'eta': eta.isoformat()})
+            eta += datetime.timedelta(seconds=eta_steps)
+    return task_log
+
+
+@app.task()
+def log_workouts_email(user_pk):
+    """Email reminder for users to please log their workouts."""
+    CustomUser = apps.get_model('custom_user', 'CustomUser')
+    user_obj = CustomUser.objects.get(pk=user_pk)
+    workout_obj_lst = user_obj.workout_set.order_by('-start_datetime')[:3]
+
+    email_subject = 'Workout Challenge - Log Your Workouts!'
+
+    email_body = render_to_string(
+        "email_log_workouts.html",
+        {
+            'first_name': user_obj.first_name,
+            'last_workouts': workout_obj_lst,
+            'link_strava_note': user_obj.strava_refresh_token is None or user_obj.strava_refresh_token == '',
+            'MAIN_HOST': settings.MAIN_HOST,
+            'EMAIL_REPLY_TO': settings.EMAIL_REPLY_TO[0] if settings.EMAIL_REPLY_TO is not None else settings.EMAIL_FROM,
+        }
+    )
+
+    if settings.DEBUG:
+        with open('tmp_email.html', 'w') as file:
+            file.write(email_body)
+
+    send_email(subject=email_subject, body=email_body, to_email=user_obj.email)
+
+    return {'pk': user_obj.pk, 'username': user_obj.username, 'email': user_obj.email}
+
+
+@app.task()
+def send_all_competition_start_email():
+    print("Scheduling competition start emails...")
+    Competition = apps.get_model('competition', 'Competition')
+    competition_lst = Competition.objects.filter(start_date=datetime.date.today() + datetime.timedelta(days=1)).order_by('pk')
+    task_log = []
+    for i, competition_obj in enumerate(competition_lst):
+        eta = datetime.datetime.now(datetime.timezone.utc) + datetime.timedelta(seconds=10) + datetime.timedelta(minutes=(15 * i))
+        user_lst = competition_obj.user.all().order_by('pk')
+        if len(user_lst) > 0:
+            eta_steps = max(min((60 * 60) // len(user_lst), 60), 10)
+            for user_obj in user_lst:
+                result = competition_start_email.apply_async(args=[competition_obj.pk, user_obj.pk], eta=eta)
+                task_log.append({'user_pk': user_obj.pk, 'username': user_obj.username, 'email': user_obj.email, 'competition_pk': competition_obj.pk, 'competition_name': competition_obj.name, 'task_id': result.task_id, 'eta': eta.isoformat()})
+                eta += datetime.timedelta(seconds=eta_steps)
+    return task_log
+
+
+@app.task()
+def competition_start_email(competition_pk, user_pk):
+    """Email for competition start tomorrow."""
+    Competition = apps.get_model('competition', 'Competition')
+    competition_obj = Competition.objects.get(pk=competition_pk)
+    goal_objs = competition_obj.activitygoal_set.all()
+
+    CustomUser = apps.get_model('custom_user', 'CustomUser')
+    user_obj = CustomUser.objects.get(pk=user_pk)
+
+    email_subject = 'Workout Challenge - READY, SET, GO!'
+
+    email_body = render_to_string(
+        "email_competition_start.html",
+        {
+            'first_name': user_obj.first_name,
+            'MAIN_HOST': settings.MAIN_HOST,
+            'competition': competition_obj,
+            'goals': goal_objs,
+            'EMAIL_REPLY_TO': settings.EMAIL_REPLY_TO[0] if settings.EMAIL_REPLY_TO is not None else settings.EMAIL_FROM,
+            'goal_equalizer_note': user_obj.scaling_kcal == 1 and user_obj.scaling_distance == 1,
+        }
+    )
+
+    if settings.DEBUG:
+        with open('tmp_email.html', 'w') as file:
+            file.write(email_body)
+
+    send_email(subject=email_subject, body=email_body, to_email=user_obj.email)
+
+    return ({'pk': user_obj.pk, 'username': user_obj.username, 'email': user_obj.email})
+
+
+@app.task()
+def send_all_leaderboard_emails():
+    print("Scheduling leaderboard emails...")
+    CustomUser = apps.get_model('custom_user', 'CustomUser')
+    user_lst = CustomUser.objects.filter(my_competitions__start_date__lt=datetime.date.today(), my_competitions__end_date__gte=datetime.date.today()).order_by('pk')
+    task_log = []
+    if len(user_lst) > 0:
+        eta_steps = max(min((60 * 60) // len(user_lst), 60), 10)
+        eta = datetime.datetime.now(datetime.timezone.utc) + datetime.timedelta(seconds=10)
+        for user_obj in user_lst:
+            result = leaderboard_email.apply_async(args=[user_obj.pk], eta=eta)
+            task_log.append({'pk': user_obj.pk, 'username': user_obj.username, 'email': user_obj.email, 'task_id': result.task_id, 'eta': eta.isoformat()})
+            eta += datetime.timedelta(seconds=eta_steps)
+    return task_log
+
+
+@app.task()
+def leaderboard_email(user_pk):
+    """Email to send users their leaderboard."""
+    CustomUser = apps.get_model('custom_user', 'CustomUser')
+    user_obj = CustomUser.objects.get(pk=user_pk)
+
+    competition_all_data = []
+    competition_7d_data = []
+
+    for competition in user_obj.my_competitions.filter(start_date__lte=datetime.date.today(), end_date__gte=datetime.date.today()).order_by('-start_date'):
+        competition_all_stats = get_competition_stats(competition.pk)
+        competition_all_data.append({
+            'competition': competition_all_stats['competition'],
+            'leaderboard': competition_all_stats['leaderboard'],
+        })
+        competition_7d_stats = get_competition_stats(competition.pk, last_seven_days=True)
+        competition_7d_data.append({
+            'competition': competition_7d_stats['competition'],
+            'leaderboard': competition_7d_stats['leaderboard'],
+        })
+
+    email_subject = 'Workout Challenge - Your Spot on the Leaderboard!'
+
+    email_body = render_to_string(
+        "email_leaderboard.html",
+        {
+            'first_name': user_obj.first_name,
+            'MAIN_HOST': settings.MAIN_HOST,
+            'competitions_all': competition_all_data,
+            'competitions_7d': competition_7d_data,
+            'EMAIL_REPLY_TO': settings.EMAIL_REPLY_TO[0] if settings.EMAIL_REPLY_TO is not None else settings.EMAIL_FROM,
+            'goal_equalizer_note': user_obj.scaling_kcal == 1 and user_obj.scaling_distance == 1,
+        }
+    )
+
+    if settings.DEBUG:
+        with open('tmp_email.html', 'w') as file:
+            file.write(email_body)
+
+    send_email(subject=email_subject, body=email_body, to_email=user_obj.email)
+
+    return ({'pk': user_obj.pk, 'username': user_obj.username, 'email': user_obj.email})
+
+
+@app.task()
+def send_all_weekly_emails():
+    print("Scheduling weekly emails...")
+    CustomUser = apps.get_model('custom_user', 'CustomUser')
+    user_lst = CustomUser.objects.filter(email_mid_week=True).order_by('pk')
+    task_log = []
+    if len(user_lst) > 0:
+        eta_steps = max(min((60 * 60) // len(user_lst), 60), 10)
+        eta = datetime.datetime.now(datetime.timezone.utc) + datetime.timedelta(seconds=10)
+        for user_obj in user_lst:
+            result = weekly_email.apply_async(args=[user_obj.pk], eta=eta)
+            task_log.append({'pk': user_obj.pk, 'username': user_obj.username, 'email': user_obj.email, 'task_id': result.task_id, 'eta': eta.isoformat()})
+            eta += datetime.timedelta(seconds=eta_steps)
+    return task_log
+
+
+def openai_quote():
+
+    if settings.OPENAI_API_KEY is None:
+        return None
+
+    todays_ai_quote = cache.get('todays_ai_quote', None)
+
+    if todays_ai_quote is None:
+        client = OpenAI(api_key=settings.OPENAI_API_KEY)
+        options = ["fitness", "health", "nutritional", "workout"]
+        selection = random.choice(options)
+        response = client.chat.completions.create(
+            model="gpt-4o",
+            messages=[
+                {"role": "user", "content": f"Tell me a one sentence {selection} fact."},
+            ],
+            temperature=1.0,
+            top_p=1.0
+        )
+        todays_ai_quote = response.choices[0].message.content
+        cache.set('todays_ai_quote', todays_ai_quote, 60 * 60 * 20)
+
+        print('Todays AI Quote:', todays_ai_quote)
+
+    return todays_ai_quote
+
+
+def calendar_stats(user_pk):
+    today = datetime.date.today()
+
+    # Step 1: Find next Sunday (or today if Sunday)
+    days_until_sunday = (6 - today.weekday()) % 7  # weekday(): Monday=0, Sunday=6
+    next_sunday = today + datetime.timedelta(days=days_until_sunday)
+
+    # Step 2: Create list of days going back 5 weeks (inclusive)
+    dates_list = [next_sunday - datetime.timedelta(days=i) for i in range(34, -1, -1)]
+
+    Workout = apps.get_model('workouts', 'Workout')
+    all_workouts = Workout.objects.filter(user=user_pk).annotate(date=TruncDay('start_datetime')).values('date').annotate(count=Count('id'))
+    workouts_by_date = {row['date'].date().isoformat(): row['count'] for row in all_workouts}
+    workouts_by_week = {(settings.TIME_ZONE_OBJ.localize(datetime.datetime.combine(next_sunday, datetime.datetime.min.time())) - row['date']).days // 7: True for row in all_workouts}
+
+    streak_weeks = 0
+    streak_i = 0
+    streak_true = True
+    while streak_true:
+        if workouts_by_week.get(streak_i, False):
+            streak_weeks += 1
+        elif streak_i == 0:
+            pass
+        else:
+            streak_true = False
+        streak_i += 1
+
+    return_calendar = []
+    for date in dates_list:
+        workout_num = workouts_by_date.get(date.isoformat(), 0)
+        return_calendar.append({
+            'datetime': date,
+            'day': date.day,
+            'workout_num': workout_num,
+            'color': '#FFFFFF' if date == today or workout_num > 0 else ('#e5e5e5' if date > today else '#000000'),
+            'background_color': '#7F1D1D' if date == today else ('#075971' if workout_num > 0 else '#FFFFFF')
+        })
+
+    return streak_weeks, [return_calendar[i:i+7] for i in range(0, len(return_calendar), 7)]
+
+
+@app.task()
+def weekly_email(user_pk):
+    """Email to send users their weekly update."""
+    CustomUser = apps.get_model('custom_user', 'CustomUser')
+    user_obj = CustomUser.objects.get(pk=user_pk)
+
+    Workout = apps.get_model('workouts', 'Workout')
+    workout_7day_stats = Workout.objects.filter(
+        user=user_obj,
+        start_datetime__gte=datetime.date.today() - datetime.timedelta(days=7)
+    ).annotate(
+        day=TruncDate('start_datetime')
+    ).aggregate(
+        total_duration=Sum('duration'),
+        total_distance=Sum('distance'),
+        distinct_days=Count('day', distinct=True)
+    )
+
+    week_streak, calendar = calendar_stats(user_pk)
+
+    todays_ai_quote = openai_quote()
+
+    email_subject = 'Workout Challenge - Your Weekly Update!'
+
+    recorded_total_duration = 0 if workout_7day_stats["total_duration"] is None else (workout_7day_stats["total_duration"].seconds // 60)
+    recorded_total_distance = 0 if workout_7day_stats["total_distance"] is None else workout_7day_stats["total_distance"]
+    recorded_distinct_days = 0 if workout_7day_stats["distinct_days"] is None else workout_7day_stats["distinct_days"]
+
+    email_body = render_to_string(
+        "email_weekly.html",
+        {
+            'first_name': user_obj.first_name,
+            'MAIN_HOST': settings.MAIN_HOST,
+            'calendar': calendar,
+            'week_streak': week_streak,
+            'goals': {
+                'active_days': None if user_obj.goal_active_days is None or user_obj.goal_active_days == '' else {'recorded': recorded_distinct_days,'target': user_obj.goal_active_days, 'percent': min(1, recorded_distinct_days / user_obj.goal_active_days) * 100, 'percent_vml': int(min(1, recorded_distinct_days / user_obj.goal_active_days) * 100 * 2.5)},
+                'distance': None if user_obj.goal_distance is None or user_obj.goal_distance == '' else {'recorded': recorded_total_distance,'target': user_obj.goal_distance, 'percent': min(1, recorded_total_distance / user_obj.goal_distance) * 100, 'percent_vml': int(min(1, recorded_total_distance / user_obj.goal_distance) * 100 * 2.5)},
+                'minutes': None if user_obj.goal_workout_minutes is None or user_obj.goal_workout_minutes == '' else {'recorded': recorded_total_duration,'target': user_obj.goal_workout_minutes, 'percent': min(1, recorded_total_duration / user_obj.goal_workout_minutes) * 100, 'percent_vml': int(min(1, recorded_total_duration / user_obj.goal_workout_minutes) * 100 * 2.5)},
+            },
+            'openai_quote': todays_ai_quote,
+            'EMAIL_REPLY_TO': settings.EMAIL_REPLY_TO[0] if settings.EMAIL_REPLY_TO is not None else settings.EMAIL_FROM,
+        }
+    )
+
+    if settings.DEBUG:
+        with open('tmp_email.html', 'w') as file:
+            file.write(email_body)
+
+    send_email(subject=email_subject, body=email_body, to_email=user_obj.email)
+
+    return {'pk': user_obj.pk, 'username': user_obj.username, 'email': user_obj.email}

src-backend/custom_user/emails/multipurpose.py

@@ -0,0 +1,23 @@
+import os
+from django.conf import settings
+from django.core.mail import get_connection
+from django.core.mail.message import EmailMultiAlternatives
+
+
+
+def send_email(subject, body, to_email, cc=[], reply_to=[]):
+    """General function via which all emails are sent out"""
+    to_email = [settings.EMAIL_FROM] if (settings.DEBUG or '.local' in to_email.lower()) else [to_email]
+    from_email = settings.EMAIL_FROM
+    reply_to_email = ([from_email] if settings.EMAIL_REPLY_TO is None else settings.EMAIL_REPLY_TO) if reply_to == [] else reply_to
+
+    print(f'Email Server: {settings.EMAIL_HOST}')
+    connection = get_connection()
+    mail = EmailMultiAlternatives(
+        subject=subject, body="", from_email=from_email, to=to_email, cc=cc, reply_to=reply_to_email, connection=connection
+    )
+    mail.attach_alternative(body, "text/html")
+    mail.content_subtype = "html"
+
+    mail.send()
+    print(f'Email "{subject}" sent to {to_email}')

src-backend/custom_user/filters.py

@@ -0,0 +1,15 @@
+# filters.py
+import django_filters
+from .models import CustomUser
+
+class CustomUserFilter(django_filters.FilterSet):
+    my = django_filters.CharFilter(method='filter_my')
+
+    def filter_my(request, queryset, *args, **kwargs):
+        return queryset.filter(id=request.request.user.id)
+
+    class Meta:
+        model = CustomUser
+        fields = {
+            'username': ['exact', 'icontains'],
+        }

src-backend/custom_user/management/commands/add_dummy_data.py

@@ -0,0 +1,232 @@
+from django.core.management import BaseCommand
+import datetime, random
+from datetime import timedelta
+
+from competition.models import Competition, ActivityGoal, Team, Award, Points
+from workouts.models import Workout
+from custom_user.models import CustomUser
+
+
+class Command(BaseCommand):
+    """Add additional test data"""
+
+    # Show this when the user types help
+    help = "Adds test data"
+
+    def handle(self, *args, **options):
+        """Actual Commandline executed function when manage.py command is called"""
+        test_users = [
+            {
+                "email": "user1@admin.local",
+                "password": "password",
+                "first_name": "Charlotte",
+                "last_name": "Doe",
+                "is_superuser": True,
+                "is_staff": True,
+                "strava_athlete_id": 123456789,
+            },
+            {
+                "email": "user2@admin.local",
+                "password": "password",
+                "first_name": "Tom",
+                "last_name": "Smith-Bloggs",
+                "is_superuser": True,
+                "is_staff": True,
+            },
+            {
+                "email": "user3@admin.local",
+                "password": "password",
+                "first_name": "User",
+                "last_name": "von der Leyen",
+                "is_superuser": False,
+                "is_staff": False,
+            },
+        ]
+
+        user_obj_dict = {}
+        for user_i in test_users:
+            user_obj = CustomUser.objects.create_user(**user_i)
+            user_obj.set_password(user_i["password"])
+            user_obj.save()
+
+            user_obj_dict[user_i["email"]] = user_obj
+
+
+
+        test_competitions = [
+            {
+                "owner": CustomUser.objects.get(email="user1@admin.local"),
+                "name": "WHO Competition",
+                "join_code": "WHOComp",
+                "start_date": "2025-05-01",
+                "end_date": "2025-12-31",
+                "has_teams": True,
+                "teams": [
+                    {
+                        "name": "Team 1",
+                        "members": [
+                            "user1@admin.local",
+                            "user2@admin.local",
+                        ]
+                    }
+                ],
+                "goals": [
+                    {
+                        "name": "Move",
+                        "metric": "kcal",
+                        "period": "week",
+                        "goal": 600,
+                        "max_per_day": 1_200,
+                        "max_per_week": 6_000,  # 5x the daily limit
+                    },
+                    {
+                        "name": "Exercise",
+                        "metric": "min",
+                        "period": "day",
+                        "goal": 30,
+                        "max_per_day": 60,
+                        "max_per_week": 300,  # 5x the daily limit
+                    },
+                ],
+                "awards": [
+                    {
+                        "name": "10 Workouts (Bronze)",
+                        "sport": "GROUP_ANY",
+                        "threshold": 10,
+                        "period": "end",
+                        "reward_points": 250,
+                    },
+                    {
+                        "name": "25 Workouts (Silver)",
+                        "sport": "GROUP_ANY",
+                        "threshold": 25,
+                        "period": "end",
+                        "reward_points": 500,
+                    },
+                    {
+                        "name": "50 Workouts (Gold)",
+                        "sport": "GROUP_ANY",
+                        "threshold": 25,
+                        "period": "end",
+                        "reward_points": 1_000,
+                    },
+                ]
+            },
+            {
+                "owner": CustomUser.objects.get(email="user2@admin.local"),
+                "name": "100k 1k Competition",
+                "join_code": "100k1k",
+                "start_date": "2025-01-01",
+                "end_date": "2025-12-31",
+                "teams": [
+                    {
+                        "name": "Team 1",
+                        "members": [
+                            "user3@admin.local",
+                            "user2@admin.local",
+                        ]
+                    }
+                ],
+                "goals": [
+                    {
+                        "name": "Distance",
+                        "metric": "km",
+                        "period": "competition",
+                        "goal": 1_000,
+                        "min_per_workout": 5,
+                    },
+                    {
+                        "name": "Effort",
+                        "metric": "kj",
+                        "period": "month",
+                        "goal": 1_000,
+                    },
+                    {
+                        "name": "Workouts",
+                        "metric": "num",
+                        "period": "week",
+                        "goal": 3,
+                        "max_per_day": 2,
+                        "max_per_week": 6,
+                    },
+                ]
+            }
+        ]
+
+
+        for competitions_i in test_competitions:
+            goals = competitions_i.pop("goals", [])
+            awards = competitions_i.pop("awards", [])
+            teams = competitions_i.pop("teams", [])
+            competitions_obj = Competition(**competitions_i)
+            competitions_obj.save()
+
+            for goal_i in goals:
+                goal_obj = ActivityGoal(competition=competitions_obj, **goal_i)
+                goal_obj.save()
+
+            for award_i in awards:
+                award_obj = Award(competition=competitions_obj, **award_i)
+                award_obj.save()
+
+            for team_i in teams:
+                team_i_name = team_i.pop("name")
+                team_i_members = team_i.pop("members", [])
+                team_obj = Team(competition=competitions_obj, name=team_i_name)
+                team_obj.save()
+                for user_i in team_i_members:
+                    user_i_obj = CustomUser.objects.get(email=user_i)
+                    user_i_obj.my_teams.add(team_obj)
+                    user_i_obj.my_competitions.add(competitions_obj)
+                    user_i_obj.save()
+
+
+        test_workouts = []
+        today = datetime.datetime.now()
+        curr_datetime = today - datetime.timedelta(days=30*6)  # 6 months ago
+        while curr_datetime < today:
+            today_entries = random.randint(0, len(test_users))
+            user_entries = random.sample(test_users, k=today_entries)
+            for user_i in user_entries:
+                duration_i = random.randint(15, 75)
+                sport_i = random.sample(['Run', 'Tennis', 'WeightTraining', 'Workout'], k=1)[0]
+
+                workout_i = {
+                        'user': user_i['email'],
+                        'sport_type': sport_i,
+                        'start_datetime': curr_datetime,
+                        'duration': timedelta(minutes=duration_i),
+                        'intensity_category': random.sample([1, 2, 3, 4], k=1)[0],
+                        'kcal': random.uniform(0.6, 1.3) * 10 * duration_i,
+                        'distance': duration_i / random.uniform(5, 8) if sport_i == 'Run' else None,
+                        'strava_id': random.randint(0, 999999999) if random.sample([True, False], k=1)[0] else None,
+                }
+
+                #points_i = []
+                #user_i_obj = CustomUser.objects.get(email=user_i['email'])
+                #for competitions_i in user_i_obj.my_competitions.all():
+                #    if (curr_datetime.date() >= competitions_i.start_date) & (curr_datetime.date() <= competitions_i.end_date):
+                #        for goal_i in competitions_i.activitygoal_set.all():
+                #            points = duration_i * random.uniform(0.75, 2.5) / 25
+                #            points_i.append({
+                #                "goal": goal_i,
+                #                "points_raw": points,
+                #                "points_capped": points,
+                #            })
+
+                test_workouts.append({**workout_i}) #, 'points': points_i})
+                curr_datetime += timedelta(minutes=random.uniform(2, 4) * 60 * 24)
+
+
+        for workout_i in test_workouts:
+            #points = workout_i.pop("points", [])
+            user_email = workout_i.pop("user", None)
+            user = CustomUser.objects.get(email=user_email)
+            workout_obj = Workout(user=user, **workout_i)
+            workout_obj.save()
+
+            #for point_i in points:
+            #    point_obj = Points(workout=workout_obj, **point_i)
+            #    point_obj.save()
+
+

src-backend/custom_user/management/commands/promotetostaff.py

@@ -0,0 +1,27 @@
+from django.core.management import BaseCommand
+from django.contrib.auth import get_user_model
+
+class Command(BaseCommand):
+    """Add additional test data"""
+
+    # Show this when the user types help
+    help = "Give user staff status"
+
+    def add_arguments(self, parser):
+        parser.add_argument("email", nargs="?", type=str, help="Email of the user to promote to staff")
+
+    def handle(self, *args, **options):
+        """Actual Commandline executed function when manage.py command is called"""
+        User = get_user_model()
+        email = options.get("email")
+
+        if not email:
+            email = input("Enter the email of the user to promote to staff: ")
+
+        try:
+            user = User.objects.get(email=email)
+            user.is_staff = True
+            user.save()
+            self.stdout.write(self.style.SUCCESS(f"User {email} is now staff."))
+        except User.DoesNotExist:
+            self.stdout.write(self.style.ERROR(f"No user found with email {email}"))

src-backend/custom_user/management/commands/runcelerytask.py

@@ -0,0 +1,41 @@
+from django.core.management.base import BaseCommand
+from celery import current_app
+
+class Command(BaseCommand):
+    help = "Run a Celery task synchronously (default) or asynchronously (--async)."
+
+    def add_arguments(self, parser):
+        parser.add_argument("task_name", help="Name of the Celery task")
+        parser.add_argument("task_args", nargs="*", help="Task args and kwargs (key=value)")
+        parser.add_argument(
+            "--async", action="store_true", dest="async_mode",
+            help="Run task asynchronously via Celery worker"
+        )
+
+    def handle(self, *args, **options):
+        task_name = options["task_name"]
+        task = current_app.tasks.get(task_name)
+
+        if not task:
+            self.stderr.write(self.style.ERROR(f"Task '{task_name}' not found"))
+            return
+
+        # Parse args/kwargs
+        positional, keyword = [], {}
+        for arg in options["task_args"]:
+            if "=" in arg:
+                k, v = arg.split("=", 1)
+                keyword[k] = v
+            else:
+                positional.append(arg)
+
+        if options["async_mode"]:
+            result = task.delay(*positional, **keyword)
+            self.stdout.write(self.style.SUCCESS(
+                f"Task {task_name} dispatched asynchronously with id {result.id}"
+            ))
+        else:
+            result = task.apply(args=positional, kwargs=keyword)
+            self.stdout.write(self.style.SUCCESS(
+                f"Task {task_name} finished synchronously with result: {result.get()}"
+            ))

src-backend/custom_user/models.py

@@ -0,0 +1,215 @@
+import requests
+import qrcode, datetime
+from decimal import Decimal
+
+from django.db import models
+from django.utils.translation import gettext_lazy as _
+
+from django.contrib.auth.base_user import BaseUserManager
+from django.contrib.auth.models import AbstractBaseUser, PermissionsMixin
+from django.core.validators import MinValueValidator, MaxValueValidator
+from django.utils import timezone
+from django.conf import settings
+from django.db.models.signals import m2m_changed
+from django.dispatch import receiver
+
+from competition.scorer import trigger_user_change
+from custom_user.emails.celery_emails import welcome_email
+
+# Create your models here.
+GENDER_CHOICES = [
+    ('M', 'Male'),
+    ('F', 'Female'),
+    ('O', 'Other'),
+]
+
+class CustomUserManager(BaseUserManager):
+    """
+    Custom user model manager where email is the unique identifiers
+    for authentication instead of usernames.
+    """
+
+    def create_user(self, email, password, **extra_fields):
+        """
+        Create and save a user with the given email and password.
+        """
+        if not email:
+            raise ValueError(_("The Email must be set"))
+        email = self.normalize_email(email)
+        user = self.model(email=email, **extra_fields)
+        user.set_password(password)
+        user.save()
+        return user
+
+    def create_superuser(self, email, password, **extra_fields):
+        """
+        Create and save a SuperUser with the given email and password.
+        """
+        extra_fields.setdefault("is_staff", True)
+        extra_fields.setdefault("is_superuser", True)
+        # extra_fields.setdefault("is_active", True)
+
+        if extra_fields.get("is_staff") is not True:
+            raise ValueError(_("Superuser must have is_staff=True."))
+        if extra_fields.get("is_superuser") is not True:
+            raise ValueError(_("Superuser must have is_superuser=True."))
+        return self.create_user(email, password, **extra_fields)
+
+
+class CustomUser(AbstractBaseUser, PermissionsMixin):
+    """Custom User model - needed to use email as login and a few more additional fields"""
+
+    email = models.EmailField(_("email address"), unique=True)
+    first_name = models.CharField(max_length=30, null=False, blank=False)
+    last_name = models.CharField(max_length=40, null=True, blank=True)
+    gender = models.CharField(max_length=1, null=True, blank=True, choices=GENDER_CHOICES)
+
+    username = models.CharField(max_length=40, null=True, blank=True)
+
+    my_competitions = models.ManyToManyField('competition.Competition', blank=True, related_name='user')
+    my_teams = models.ManyToManyField('competition.Team', blank=True, related_name='user')
+
+    # personal 7 day goals
+    goal_active_days = models.IntegerField(null=True, blank=True, default=3)
+    goal_workout_minutes = models.IntegerField(null=True, blank=True, default=150)
+    goal_distance = models.IntegerField(null=True, blank=True, default=None)
+
+    # personal scaling factors
+    scaling_kcal = models.DecimalField(null=False, blank=False, default=1, max_digits=8, decimal_places=4, validators=[
+            MinValueValidator(Decimal('0.6666')),
+            MaxValueValidator(Decimal('1.3333'))
+        ]
+    )
+    scaling_distance = models.DecimalField(null=False, blank=False, default=1, max_digits=8, decimal_places=4, validators=[
+            MinValueValidator(Decimal('0.6666')),
+            MaxValueValidator(Decimal('1.3333'))
+        ]
+    )
+
+    # has_paid = models.BooleanField(default=False)
+    is_verified = models.BooleanField(default=False)
+
+    email_mid_week = models.BooleanField(default=False)
+
+    strava_athlete_id = models.IntegerField(null=True, blank=True)
+    strava_allow_follow = models.BooleanField(default=True)
+    strava_refresh_token = models.CharField(max_length=40, null=True, blank=True)
+    strava_last_synced_at = models.DateTimeField(null=True, blank=True)
+
+    is_staff = models.BooleanField(default=False)
+    is_active = models.BooleanField(default=True)
+    date_joined = models.DateTimeField(default=timezone.now)
+
+    USERNAME_FIELD = "email"
+    REQUIRED_FIELDS = ["first_name", "last_name"]
+
+    objects = CustomUserManager()
+
+    class Meta:
+        verbose_name = "User"
+        verbose_name_plural = "Users"
+
+    def __str__(self):
+        return self.email
+
+
+    def __init__(self, *args, **kwargs):
+        """ save initial field values to be able to detect changes """
+        super().__init__(*args, **kwargs)
+        self._original = self._dict()
+
+    #@property
+    def _dict(self):
+        """ dict of current fields and values - to detect changes """
+        return {f.name: round(float(self.__dict__[f.attname]), 2) if isinstance(self.__dict__.get(f.attname), (Decimal, float)) else self.__dict__.get(f.attname) for f in self._meta.fields}
+
+    def get_changed_fields(self):
+        """ check which fields have changed """
+        current = self._dict()
+        return {
+            k: (v, current.get(k))
+            for k, v in self._original.items()
+            if v != current.get(k)
+        }
+
+
+    def save(self, *args, **kwargs):
+        """ trigger recalculation of points_capped if workout changes """
+        if self.username is None or self.username == "":
+            if self.first_name is None or self.first_name == "":
+                self.username = self.email.split("@")[0]
+            elif self.last_name is None or self.last_name == "":
+                self.username = self.first_name
+            else:
+                self.username = f'{self.first_name} {".".join([i[0] for i in self.last_name.replace("-"," ").split(" ") if len(i) >= 1])}.'
+
+        is_create = self.pk is None
+        super().save(*args, **kwargs)
+
+        if is_create:
+            eta = datetime.datetime.now(datetime.timezone.utc) + datetime.timedelta(seconds=60 * 5)
+            welcome_email.apply_async(args=[self.pk], eta=eta)
+
+        changed = self.get_changed_fields()
+        trigger_user_change(
+            instance=self,
+            new=is_create,
+            changes=changed
+        )
+        self._original = self._dict()  # reset
+
+
+@receiver(m2m_changed, sender=CustomUser.my_competitions.through)
+def my_competitions_changed_handler(sender, instance, action, pk_set, **kwargs):
+    if 'post' in action:
+        if isinstance(instance, CustomUser):
+            if 'add' in action:
+                # instance user obj / pk_set comp id to add
+                trigger_user_change(instance=instance, new=False, changes={'my_competitions': (None, list(pk_set))})
+            elif 'remove' in action or 'clear' in action:
+                # instance user obj / pk_set comp id to remove
+                trigger_user_change(instance=instance, new=False, changes={'my_competitions': (list(pk_set), None)})
+        else: # is instance of Competition
+            for user_id in list(pk_set):
+                user_obj = CustomUser.objects.get(pk=user_id)
+                if 'add' in action:
+                    # instance competition obj / pk_set user id to add
+                    trigger_user_change(instance=user_obj, new=False, changes={'my_competitions': (None, [instance.pk])})
+                elif 'remove' in action or 'clear' in action:
+                    # instance competition obj / pk_set user id to remove
+                    trigger_user_change(instance=user_obj, new=False, changes={'my_competitions': ([instance.pk], None)})
+
+
+
+def get_strava_auth_url(user_id):
+    """ Generate the initial auth url the user clicks, which will re-direct back to this page providing the code."""
+    client_id = settings.STRAVA_CLIENT_ID
+    redirect_url = f"{settings.MAIN_HOST}/strava/return/?user_id={user_id}"
+    return f"https://www.strava.com/oauth/authorize?client_id={client_id}&response_type=code&approval_prompt=force&scope=profile:read_all,activity:read_all&redirect_uri={redirect_url}"
+
+
+def make_url_qr_code(url, path):
+    qr = qrcode.QRCode(
+        version=1,
+        error_correction=qrcode.constants.ERROR_CORRECT_L,
+        box_size=10,
+        border=4,
+    )
+    qr.add_data(url)
+    qr.make(fit=True)
+
+    img = qr.make_image(fill_color="black", back_color="white")
+    img.save(path)
+
+
+
+class RecalcRequest(models.Model):
+    """ Recalc Request model to track which point caps need to be updated """
+
+    user = models.ForeignKey(CustomUser, on_delete=models.CASCADE, null=False, blank=False)
+    goal = models.ForeignKey('competition.ActivityGoal', on_delete=models.CASCADE, null=False, blank=False)
+    start_datetime = models.DateTimeField(null=False, blank=False)
+    done = models.BooleanField(default=False, null=False, blank=False)
+
+    def __str__(self):
+        return f'{self.goal} - {self.start_datetime}'

src-backend/custom_user/point_recalc.py

@@ -0,0 +1,177 @@
+import datetime
+
+from django.db.models import Min
+
+from django.core.cache import cache
+from workout_challenge.celery import app, is_task_already_executing
+from django.apps import apps
+from django.contrib.auth import get_user_model
+
+
+def trigger_recalc_points():
+    last_recalc = cache.get('last_recalc_points', None)
+
+    if last_recalc is None or last_recalc < datetime.datetime.now() - datetime.timedelta(seconds=30):
+        cache.set('last_recalc_points', datetime.datetime.now(), 60 * 10)
+        eta = datetime.datetime.now(datetime.timezone.utc) + datetime.timedelta(seconds=10)
+        recalc_points.apply_async(eta=eta)
+    else:
+        print('Recalc points task skipped because it was triggered less than 30 seconds ago')
+
+
+@app.task(bind=True, time_limit=60 * 30, max_retries=3)  # 30 min time limit
+def recalc_points(self):
+    if is_task_already_executing('recalc_points'):
+        print('Recalc points task skipped because it is already running')
+        return 'Skipped because it is already running.'
+
+    print('Recalculating points...')
+
+    ActivityGoal = apps.get_model('competition', 'ActivityGoal')
+    Points = apps.get_model('competition', 'Points')
+    RecalcRequest = apps.get_model('custom_user', 'RecalcRequest')
+
+    all_tasks = RecalcRequest.objects.filter(done=False)
+    grouped_tasks = all_tasks.values('user', 'goal').annotate(start_datetime=Min('start_datetime'))
+    for task_group in grouped_tasks:
+        points_lst = Points.objects.filter(goal=task_group['goal'], workout__user=task_group['user'], workout__start_datetime__gte=task_group['start_datetime']).order_by('workout__start_datetime')
+
+        goal = ActivityGoal.objects.get(pk=task_group['goal'])
+
+        scorer = Scorer()
+        scorer.set_goal(goal)
+
+        for points in points_lst:
+            earned_points = scorer.calculate_points(points)
+            setattr(points, 'points_capped', earned_points)
+            points.save()
+
+    all_tasks.delete()
+    print('All points recalculated.')
+    return [{k: str(v) for k, v in i.items()} for i in grouped_tasks]
+
+
+
+
+
+class Scorer:
+    def __init__(self):
+        self.memory_today = None
+        self.memory_today_points_raw = 0
+        self.memory_today_points_capped = 0
+        self.memory_this_week = None
+        self.memory_week_points_raw = 0
+        self.memory_week_points_capped = 0
+
+    def set_goal(self, goal):
+        self.goal = goal
+        self.floor_workout = 0 if goal.min_per_workout is None else goal.min_per_workout / goal.goal * 100
+        self.cap_workout = None if goal.max_per_workout is None else goal.max_per_workout / goal.goal * 100
+        self.floor_day = 0 if goal.min_per_day is None else goal.min_per_day / goal.goal * 100
+        self.cap_day = None if goal.max_per_day is None else goal.max_per_day / goal.goal * 100
+        self.floor_week = 0 if goal.min_per_week is None else goal.min_per_week / goal.goal * 100
+        self.cap_week = None if goal.max_per_week is None else goal.max_per_week / goal.goal * 100
+
+    def calculate_points(self, points):
+        # potentially reset the memory if new day / week
+        if points.workout.start_datetime.date() != self.memory_today:
+            self.memory_today = points.workout.start_datetime.date()
+            self.memory_today_points_raw = 0
+            self.memory_today_points_capped = 0
+        if points.workout.start_datetime.isocalendar()[1] != self.memory_this_week:
+            self.memory_this_week = points.workout.start_datetime.isocalendar()[1]
+            self.memory_week_points_raw = 0
+            self.memory_week_points_capped = 0
+
+        earned_points = points.points_raw
+        self.memory_today_points_raw += earned_points
+        self.memory_week_points_raw += earned_points
+        earned_points = points.points_raw
+
+        # workout floor
+        earned_points = max(earned_points - self.floor_workout, 0)
+
+        # workout cap
+        if self.cap_workout is not None:
+            adjusted_cap = self.cap_workout - self.floor_workout
+            earned_points = min(earned_points, adjusted_cap)
+
+        # day floor
+        earned_points = max(min(earned_points, self.memory_today_points_raw - self.floor_day), 0)
+
+        # day cap
+        if self.cap_day is not None:
+            max_points_to_earn_today = self.cap_day - self.floor_day
+            earned_points = max(min(earned_points, max_points_to_earn_today - self.memory_today_points_capped),0)
+
+        # week floor
+        earned_points = max(min(earned_points, self.memory_week_points_raw - self.floor_week), 0)
+
+        # week cap
+        if self.cap_week is not None:
+            max_points_to_earn_week = self.cap_week - self.floor_week
+            earned_points = max(min(earned_points, max_points_to_earn_week - self.memory_week_points_capped),0)
+
+
+        self.memory_today_points_capped += earned_points
+        self.memory_week_points_capped += earned_points
+        return earned_points
+
+
+class DummyObject:
+    def __init__(self, **kwargs):
+        self.min_per_workout = None
+        self.max_per_workout = None
+        self.min_per_day = None
+        self.max_per_day = None
+        self.min_per_week = None
+        self.max_per_week = None
+        for key, value in kwargs.items():
+            setattr(self, key, value)
+
+
+def test_scorer():
+
+    for goal_kwargs, points, expected_result in (
+        ({'goal': 100, 'min_per_workout': 10}, [10], 0),
+        ({'goal': 100, 'min_per_workout': 10}, [20], 10),
+        ({'goal': 100, 'max_per_workout': 30}, [30], 30),
+        ({'goal': 100, 'max_per_workout': 30}, [40], 30),
+        ({'goal': 100, 'min_per_workout': 10, 'max_per_workout': 30}, [40], 20),
+        ({'goal': 100, 'min_per_day': 10}, [10], 0),
+        ({'goal': 100, 'min_per_day': 10}, [20], 10),
+        ({'goal': 100, 'min_per_day': 10}, [8, 8], 6),
+        ({'goal': 100, 'max_per_day': 30}, [20], 20),
+        ({'goal': 100, 'max_per_day': 30}, [20, 20], 30),
+        ({'goal': 100, 'min_per_day': 10, 'max_per_day': 30}, [8, 12, 8, 8, 14], 20),
+        ({'goal': 100, 'min_per_week': 10}, [10], 0),
+        ({'goal': 100, 'min_per_week': 10}, [20], 10),
+        ({'goal': 100, 'max_per_week': 30}, [20], 20),
+        ({'goal': 100, 'max_per_week': 30}, [20, 20], 30),
+        ({'goal': 100, 'min_per_week': 10, 'max_per_week': 30}, [8, 12, 8, 8, 14], 20),
+        ({'goal': 100, 'min_per_workout': 10, 'min_per_day': 20}, [5, 20, 5, 20], 15),
+        ({'goal': 100, 'min_per_workout': 20, 'min_per_day': 10}, [5, 30, 30], 20),
+        ({'goal': 100, 'max_per_workout': 20, 'max_per_day': 30}, [20, 25, 25, 25], 30),
+        ({'goal': 100, 'max_per_workout': 30, 'max_per_day': 20}, [20, 25, 25, 25], 20),
+        ({'goal': 100, 'min_per_workout': 10, 'max_per_day': 15}, [5, 5, 5, 5], 0),
+        ({'goal': 100, 'min_per_workout': 10, 'max_per_day': 30}, [15, 35, 5, 15], 30),
+    ):
+        workout = DummyObject(start_datetime=datetime.datetime.fromisoformat('2023-01-01T00:00:00'))
+        goal = DummyObject(**goal_kwargs)
+        scorer = Scorer()
+        scorer.set_goal(goal)
+
+        earned_points = 0
+        for point in points:
+            point_obj = DummyObject(points_raw=point, workout = workout)
+            earned_points += scorer.calculate_points(point_obj)
+
+        assert earned_points == expected_result, f'Expected {expected_result}, got {earned_points} for goal {goal_kwargs}'
+
+
+
+
+
+if __name__ == '__main__':
+    test_scorer()
+

src-backend/custom_user/serializers.py

@@ -0,0 +1,118 @@
+from rest_framework import serializers
+from django.conf import settings
+from django.contrib.auth.tokens import default_token_generator
+from django.utils.http import urlsafe_base64_encode, urlsafe_base64_decode
+from django.utils.encoding import force_bytes
+from django.template.loader import render_to_string
+
+from .models import CustomUser
+from .emails.multipurpose import send_email
+
+
+class CustomUserSerializer(serializers.ModelSerializer):
+    my = serializers.SerializerMethodField()
+
+    class Meta:
+        model = CustomUser
+        fields = ['id', 'my', 'email', 'first_name', 'last_name', 'gender', 'username', 'password', 'is_verified', 'email_mid_week', 'strava_athlete_id', 'strava_allow_follow', 'strava_last_synced_at', 'my_competitions', 'my_teams', 'goal_active_days', 'goal_workout_minutes', 'goal_distance', 'scaling_kcal', 'scaling_distance']
+        read_only_fields = ['is_verified', 'strava_athlete_id', 'strava_last_synced_at']
+        extra_kwargs = {
+            'password': {'write_only': True},
+        }
+
+    def get_my(self, obj):
+        user = self.context['request'].user
+        return obj.pk == user.pk
+
+    def create(self, validated_data):
+        user = CustomUser.objects.create_user(
+            email=validated_data.get('email'),
+            first_name=validated_data.get('first_name'),
+            last_name=validated_data.get('last_name', None),
+            password=validated_data.get('password'),
+            gender=validated_data.get('gender', None),
+        )
+        return user
+
+    def to_representation(self, instance):
+        rep = super().to_representation(instance)
+        user = self.context['request'].user
+
+        # Omit 'secret' fields of other users that this user is not allowed to see
+        if instance.pk != user.pk:
+            rep.pop('email', None)
+            rep.pop('first_name', None)
+            rep.pop('last_name', None)
+            rep.pop('gender', None)
+            rep.pop('password', None)
+            rep.pop('strava_last_synced_at', None)
+
+            if not rep['strava_allow_follow']:
+                rep.pop('strava_athlete_id', None)
+
+        return rep
+
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+
+        # If instance exists, it's an update (PUT/PATCH), make fields optional
+        if self.instance:
+            self.fields['email'].required = False
+            self.fields['password'].required = False
+            self.fields['first_name'].required = False
+            self.fields['last_name'].required = False
+
+
+class PasswordResetSerializer(serializers.Serializer):
+    email = serializers.EmailField()
+
+    def validate_email(self, value):
+        if not CustomUser.objects.filter(email=value).exists():
+            # To avoid leaking info
+            return value
+        return value
+
+    def save(self, request):
+        email = self.validated_data['email']
+        users = CustomUser.objects.filter(email=email)
+        for user in users:
+            uid = urlsafe_base64_encode(force_bytes(user.pk))
+            token = default_token_generator.make_token(user)
+            reset_url = f"{settings.MAIN_HOST}/password/reset/{uid}/{token}/"
+
+            email_subject = "Workout Challenge - Reset Your Password"
+            email_body = render_to_string(
+                "email_password_reset.html",
+                {
+                    'first_name': user.first_name,
+                    'MAIN_HOST': settings.MAIN_HOST,
+                    'RESET_URL': reset_url,
+                    'EMAIL_REPLY_TO': settings.EMAIL_REPLY_TO,
+                }
+            )
+
+            send_email(subject=email_subject, body=email_body, to_email=user.email)
+
+
+
+class PasswordResetConfirmSerializer(serializers.Serializer):
+    uid = serializers.CharField()
+    token = serializers.CharField()
+    new_password = serializers.CharField(write_only=True)
+
+    def validate(self, attrs):
+        try:
+            uid = urlsafe_base64_decode(attrs['uid']).decode()
+            self.user = CustomUser.objects.get(pk=uid)
+        except (CustomUser.DoesNotExist, ValueError):
+            raise serializers.ValidationError("Invalid user.")
+
+        if not default_token_generator.check_token(self.user, attrs['token']):
+            raise serializers.ValidationError("Invalid or expired token.")
+
+        return attrs
+
+    def save(self):
+        self.user.set_password(self.validated_data['new_password'])
+        self.user.save()

src-backend/custom_user/strava.py

@@ -0,0 +1,194 @@
+import requests
+import time, datetime
+
+from django.core.cache import cache
+from django.contrib.auth import get_user_model
+from django.conf import settings
+from django.utils import timezone
+from rest_framework.response import Response
+from rest_framework import status
+from django.db import IntegrityError
+from workout_challenge.celery import app, is_task_already_executing
+from django.db.models import Q
+
+from workouts.models import Workout
+from .api_rate_limiter import strava_api_monitor, RateLimitExceeded  # Import to trigger initialization
+
+
+def _seconds_until_next_interval():
+    current_time = time.localtime()
+    minutes = current_time.tm_min
+    seconds = current_time.tm_sec
+
+    # Calculate the next interval (15, 30, 45, or 0 of the next hour)
+    next_interval = (minutes // 15 + 1) * 15
+    if next_interval == 60:  # Handle the case where it rolls over to the next hour
+        next_interval = 0
+
+    # Calculate the seconds until the next interval
+    seconds_until = (next_interval - minutes) * 60 - seconds
+    if next_interval == 0:  # Adjust for the next hour
+        seconds_until += 3600
+
+    return seconds_until
+
+
+@app.task(bind=True, time_limit=60 * 60 * 3, max_retries=10)  # 3 hour time limit
+def daily_strava_sync(self, refresh_all=False):
+    if is_task_already_executing('daily_strava_sync'):
+        return 'Task already executing. Skipping.'
+
+    CustomUser = get_user_model()
+    user_lst = CustomUser.objects.filter(
+        strava_refresh_token__isnull=False,
+        is_active=True
+    )
+    if refresh_all is False:
+        user_lst = user_lst.filter(
+            Q(strava_last_synced_at__lt=timezone.now() - datetime.timedelta(hours=6)) |
+            Q(strava_last_synced_at__isnull=True)
+        )
+    user_lst = user_lst.order_by('strava_last_synced_at', 'pk')
+
+    user_lst_names = [{'pk': i.pk, 'username': i.username, 'email': i.email} for i in user_lst]
+    print(f'Syncing Strava for {len(user_lst)} users: {user_lst_names}')
+
+    for user in user_lst:
+        try:
+            sync_strava(user__id=user.id)
+        except RateLimitExceeded as exc:
+            sleep_time = _seconds_until_next_interval() + 60
+            print(f'Strava sync rate limit exceeded - sleeping for {sleep_time // 60 } mins')
+            raise self.retry(exc=exc, countdown=sleep_time)  # retry in next Strava 15min api period
+        except Exception as exc:
+            print(f'Strava sync failed for user {user.email} - {exc}')
+
+    print('Finished syncing Strava.')
+    return user_lst_names
+
+
+
+@app.task(bind=True)
+def sync_strava(self, user__id, start_datetime=None):
+    access_token = cache.get(f"strava_access_token_{user__id}")
+    CustomUser = get_user_model()
+    user = CustomUser.objects.get(id=user__id)
+
+    all_existing_strava_activities = set(Workout.objects.all().values_list('strava_id', flat=True))
+
+    cnt_new_strava_activities = 0
+    cnt_updated_strava_activities = 0
+
+    if strava_api_monitor.ok_workout_requests() is False:
+        raise RateLimitExceeded("No Strava Workout API requests allowed anymore to keep enough balance for user linkage")
+
+    # refresh access token if expired
+    if access_token is None:
+        refresh_token = user.strava_refresh_token
+        client_id = settings.STRAVA_CLIENT_ID
+        client_secret = settings.STRAVA_CLIENT_SECRET
+
+        response = requests.post(
+            url='https://www.strava.com/oauth/token',
+            data={
+                'client_id': client_id,
+                'client_secret': client_secret,
+                'grant_type': 'refresh_token',
+                'refresh_token': refresh_token,
+            }
+        )
+        strava_api_monitor.log_request(response)
+        response.raise_for_status()
+
+        strava_tokens = response.json()
+        access_token = strava_tokens.get('access_token', None)
+        cache.set(f"strava_access_token_{user__id}", access_token, int(strava_tokens.get('expires_in', 21600)) - 60)
+
+
+    # get activities
+    page = 1
+    per_page = 200
+    while True:
+        if strava_api_monitor.ok_workout_requests() is False:
+            raise RateLimitExceeded("No Strava Workout API requests allowed anymore to keep enough balance for user linkage")
+
+        response = requests.get(
+            url='https://www.strava.com/api/v3/athlete/activities',
+            headers={
+                'Authorization': f'Bearer {access_token}',
+            },
+            params={
+                'after': None if start_datetime is None else int(start_datetime.timestamp()),
+                'page': page,
+                'per_page': per_page,
+            }
+        )
+        strava_api_monitor.log_request(response)
+        response.raise_for_status()
+        activities = response.json()
+
+        for activity in activities:
+            activity_id = activity.get('id')
+
+            props = {
+                'user': user,
+                'strava_id': activity_id,
+                'sport_type': activity.get('sport_type'),
+                'start_datetime': datetime.datetime.fromisoformat(activity.get('start_date')),
+                'duration': datetime.timedelta(seconds=activity.get('moving_time')),
+                'distance': None if activity.get('distance') == 0 else activity.get('distance') / 1_000,
+            }
+
+            # if existing workout - update activity details
+            if activity_id in all_existing_strava_activities:
+                workout = Workout.objects.get(strava_id=activity_id)
+                for key, value in props.items():
+                    setattr(workout, key, value)
+                workout.save()
+                cnt_updated_strava_activities += 1
+
+            # if a new workout - get activity details
+            else:
+                if strava_api_monitor.ok_workout_requests() is False:
+                    raise RateLimitExceeded("No Strava Workout API requests allowed anymore to keep enough balance for user linkage")
+
+                response = requests.get(
+                    url=f'https://www.strava.com/api/v3/activities/{activity_id}',
+                    headers={
+                        'Authorization': f'Bearer {access_token}',
+                    },
+                )
+                strava_api_monitor.log_request(response)
+                response.raise_for_status()
+                activity_details = response.json()
+
+                avg_heart_rate = activity_details.get('average_heartrate', 0)
+                props['kcal'] = kcal = activity_details.get('calories', activity_details.get('kilojoules', 0) / 4.18)
+                props['strava_intensity_avg_watts'] = avg_watt = activity_details.get('average_watts', 0)
+
+                # estimate intensity
+                max_heart_rate = 180
+                kcal_per_ten_minute = kcal / (max(activity.get('moving_time', 60 * 30), 60) / (60 * 10))
+                if avg_heart_rate > max_heart_rate * 0.85 or kcal_per_ten_minute > 120 or avg_watt > 300:
+                    props['intensity_category'] = 4
+                elif avg_heart_rate > max_heart_rate * 0.70 or kcal_per_ten_minute > 90 or avg_watt > 275:
+                    props['intensity_category'] = 3
+                elif avg_heart_rate > max_heart_rate * 0.60 or kcal_per_ten_minute > 75 or avg_watt > 225:
+                    props['intensity_category'] = 2
+                else:
+                    props['intensity_category'] = 1
+
+                Workout.objects.create(**props)
+                cnt_new_strava_activities += 1
+
+        if len(activities) < per_page:
+            break
+        page += 1
+
+    strava_last_synced_at = timezone.now()
+    if start_datetime is None:
+        setattr(user, 'strava_last_synced_at', strava_last_synced_at)
+        user.save()
+    print(f'User {user__id} - fetched {cnt_new_strava_activities} new strava activities and updated {cnt_updated_strava_activities} existing strava activities')
+
+    return {'user': user__id, 'total_activities': (page - 1) * per_page + len(activities), 'new_activities': cnt_new_strava_activities, 'updated_activities': cnt_updated_strava_activities, 'sync_time': strava_last_synced_at}

src-backend/custom_user/templates/email_competition_start.html

@@ -0,0 +1,409 @@
+<!doctype html>
+<html xmlns="http://www.w3.org/1999/xhtml" xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office">
+
+<head>
+  <title>
+  </title>
+  <!--[if !mso]><!-->
+  <meta http-equiv="X-UA-Compatible" content="IE=edge">
+  <!--<![endif]-->
+  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <style type="text/css">
+    #outlook a {
+      padding: 0;
+    }
+
+    body {
+      margin: 0;
+      padding: 0;
+      -webkit-text-size-adjust: 100%;
+      -ms-text-size-adjust: 100%;
+    }
+
+    table,
+    td {
+      border-collapse: collapse;
+      mso-table-lspace: 0pt;
+      mso-table-rspace: 0pt;
+    }
+
+    img {
+      border: 0;
+      height: auto;
+      line-height: 100%;
+      outline: none;
+      text-decoration: none;
+      -ms-interpolation-mode: bicubic;
+    }
+
+    p {
+      display: block;
+      margin: 13px 0;
+    }
+  </style>
+  <!--[if mso]>
+    <noscript>
+    <xml>
+    <o:OfficeDocumentSettings>
+      <o:AllowPNG/>
+      <o:PixelsPerInch>96</o:PixelsPerInch>
+    </o:OfficeDocumentSettings>
+    </xml>
+    </noscript>
+    <![endif]-->
+  <!--[if lte mso 11]>
+    <style type="text/css">
+      .mj-outlook-group-fix { width:100% !important; }
+    </style>
+    <![endif]-->
+  <!--[if !mso]><!-->
+  <link href="https://fonts.googleapis.com/css?family=Ubuntu:300,400,500,700" rel="stylesheet" type="text/css">
+  <style type="text/css">
+    @import url(https://fonts.googleapis.com/css?family=Ubuntu:300,400,500,700);
+  </style>
+  <!--<![endif]-->
+  <style type="text/css">
+    @media only screen and (min-width:480px) {
+      .mj-column-per-100 {
+        width: 100% !important;
+        max-width: 100%;
+      }
+
+      .mj-column-per-50 {
+        width: 50% !important;
+        max-width: 50%;
+      }
+    }
+  </style>
+  <style media="screen and (min-width:480px)">
+    .moz-text-html .mj-column-per-100 {
+      width: 100% !important;
+      max-width: 100%;
+    }
+
+    .moz-text-html .mj-column-per-50 {
+      width: 50% !important;
+      max-width: 50%;
+    }
+  </style>
+  <style type="text/css">
+  </style>
+  <style type="text/css">
+  </style>
+</head>
+
+<body style="word-spacing:normal;background-color:#E1E8ED;">
+  <div style="display:none;font-size:1px;color:#ffffff;line-height:1px;max-height:0px;max-width:0px;opacity:0;overflow:hidden;"> The "{{ competition.name }}" competition kicks off tomorrow! Give it a strong start, build momentum – your best is waiting! But first, here's how the goals work and how to earn points. </div>
+  <div style="background-color:#E1E8ED;">
+    <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:600px;" width="600" ><tr><td style="line-height:0;font-size:0;mso-line-height-rule:exactly;"><v:image style="border:0;mso-position-horizontal:center;position:absolute;top:0;width:600px;z-index:-3;" src="{{ MAIN_HOST }}/running_email.jpg" xmlns:v="urn:schemas-microsoft-com:vml" /><![endif]-->
+    <div style="margin:0 auto;max-width:600px;">
+      <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;">
+        <tbody>
+          <tr style="vertical-align:top;">
+            <td background="{{ MAIN_HOST }}/running_email.jpg" style="background:#075985 url('{{ MAIN_HOST }}/running_email.jpg') no-repeat center center / cover;background-position:center center;background-repeat:no-repeat;padding:0px;vertical-align:top;" height="200">
+              <!--[if mso | IE]><table border="0" cellpadding="0" cellspacing="0" style="width:600px;" width="600" ><tr><td style=""><![endif]-->
+              <div class="mj-hero-content" style="margin:0px auto;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;margin:0px;">
+                  <tbody>
+                    <tr>
+                      <td style="">
+                        <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;margin:0px;">
+                          <tbody>
+                            <tr>
+                              <td align="center" class="no-invert" style="font-size:0px;padding:10px 25px;padding-top:45px;padding-bottom:10px;word-break:break-word;">
+                                <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:30px;line-height:1.2;text-align:center;color:#ffffff;">Workout Challenge</div>
+                              </td>
+                            </tr>
+                            <tr>
+                              <td align="center" style="font-size:0px;padding:10px 25px;word-break:break-word;">
+                                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="border-collapse:separate;line-height:100%;">
+                                  <tbody>
+                                    <tr>
+                                      <td align="center" bgcolor="#075985" role="presentation" style="border:1px solid #fff;border-radius:24px;cursor:auto;mso-padding-alt:10px 25px;background:#075985;" valign="middle">
+                                        <a href="{{ MAIN_HOST }}/login" style="display:inline-block;background:#075985;color:#ffffff;font-family:Helvetica, Arial, sans-serif;font-size:13px;font-weight:normal;line-height:120%;margin:0;text-decoration:none;text-transform:none;padding:10px 25px;mso-padding-alt:0px;border-radius:24px;" target="_blank"> LOGIN </a>
+                                      </td>
+                                    </tr>
+                                  </tbody>
+                                </table>
+                              </td>
+                            </tr>
+                          </tbody>
+                        </table>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td></tr></table><![endif]-->
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--[if mso | IE]></td></tr></table><table align="center" border="0" cellpadding="0" cellspacing="0" class="" role="presentation" style="width:600px;" width="600" bgcolor="white" ><tr><td style="line-height:0px;font-size:0px;mso-line-height-rule:exactly;"><![endif]-->
+    <div style="background:white;background-color:white;margin:0px auto;max-width:600px;">
+      <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="background:white;background-color:white;width:100%;">
+        <tbody>
+          <tr>
+            <td style="direction:ltr;font-size:0px;padding:20px 0;padding-bottom:0px;padding-top:0px;text-align:center;">
+              <!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" cellspacing="0"><tr><td class="" style="vertical-align:top;width:600px;" ><![endif]-->
+              <div class="mj-column-per-100 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:top;width:100%;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" width="100%">
+                  <tbody>
+                    <tr>
+                      <td style="vertical-align:top;padding-bottom:0px;">
+                        <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="" width="100%">
+                          <tbody>
+                            <tr>
+                              <td align="left" style="font-size:0px;padding:10px 25px;padding-bottom:0px;word-break:break-word;">
+                                <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;">
+                                  <p>Hi {{ first_name }},</p>
+                                  <p>The "{{ competition.name }}" competition kicks off tomorrow!</p>
+                                  <p>Give it a strong start, build momentum – your best is waiting!</p>
+                                  <p>But first, here's how the goals work and how to earn points.</p>
+                                </div>
+                              </td>
+                            </tr>
+                            <tr>
+                              <td align="center" style="font-size:0px;padding:10px 25px;word-break:break-word;">
+                                <p style="border-top:solid 2px #E1E8ED;font-size:1px;margin:0px auto;width:100%;">
+                                </p>
+                                <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" style="border-top:solid 2px #E1E8ED;font-size:1px;margin:0px auto;width:550px;" role="presentation" width="550px" ><tr><td style="height:0;line-height:0;"> &nbsp;
+</td></tr></table><![endif]-->
+                              </td>
+                            </tr>
+                          </tbody>
+                        </table>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td></tr></table><![endif]-->
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--[if mso | IE]></td></tr></table><table align="center" border="0" cellpadding="0" cellspacing="0" class="" role="presentation" style="width:600px;" width="600" bgcolor="white" ><tr><td style="line-height:0px;font-size:0px;mso-line-height-rule:exactly;"><![endif]-->
+    <div style="background:white;background-color:white;margin:0px auto;max-width:600px;">
+      <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="background:white;background-color:white;width:100%;">
+        <tbody>
+          <tr>
+            <td style="direction:ltr;font-size:0px;padding:20px 0;padding-top:5px;text-align:center;">
+              <!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" cellspacing="0"><tr><td class="" style="vertical-align:top;width:300px;" ><![endif]-->
+              <div class="mj-column-per-50 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:top;width:100%;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" width="100%">
+                  <tbody>
+                    <tr>
+                      <td style="vertical-align:top;padding-top:0px;">
+                        <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="" width="100%">
+                          <tbody>
+                            <tr>
+                              <td align="left" style="font-size:0px;padding:10px 25px;padding-top:10px;padding-bottom:15px;word-break:break-word;">
+                                <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;">
+                                  <h3>How to earn activity points?</h3>
+                                  <ul>
+                                    <li>Each competition has its own activity goals.</li>
+                                    <li>You earn <b>1 point for every 1%</b> progress toward a goal.</li>
+                                    <li>For example, if the goal is 100 minutes of exercise and you work out 50 minutes, you earn 50 points.</li>
+                                    <li><i>Note:</i> Some goals have <b>minimum or maximum limits</b>. Activities above/below these limits won’t earn you points and are marked with an asterisk (*).</li>
+                                    <li>Hover over a goal to view its limits, or over the asterisk for more details.</li>
+                                  </ul>
+                                </div>
+                              </td>
+                            </tr>
+                          </tbody>
+                        </table>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td><td class="" style="vertical-align:top;width:300px;" ><![endif]-->
+              <div class="mj-column-per-50 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:top;width:100%;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="vertical-align:top;" width="100%">
+                  <tbody>
+                    <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="" width="100%">
+                      <tbody>
+                        <tr>
+                          <td align="left" style="font-size:0px;padding:10px 25px;padding-bottom:0px;word-break:break-word;">
+                            <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;">
+                              <h3>Activity Goals:</h3>
+                            </div>
+                          </td>
+                        </tr>
+                        <tr>
+                          <td align="left" style="font-size:0px;padding:10px 25px;padding-top:0px;word-break:break-word;"> {% for goal in goals %} <table cellpadding="0" cellspacing="0" border="0" width="100%">
+                              <tr>
+                                <td style="height:10px; font-size:0; line-height:0;">&nbsp;</td>
+                              </tr>
+                              <tr>
+                                <td style="background-color:#f9f9f9; border-radius:8px; padding:18px;">
+                                  <table cellpadding="0" cellspacing="0" border="0" width="100%">
+                                    <tr>
+                                      <td style="font-size:14px; line-height:16px; mso-line-height-rule:exactly; font-weight:bold; color: #6b7280;">{{ goal.name }}</td>
+                                      <td align="right" style="font-size:14px; line-height:16px; mso-line-height-rule:exactly; color: #6b7280;">{{ goal.goal|floatformat:0 }} {{ goal.metric }} <span style="font-size:10px;">/ {{ goal.period }}</span></td>
+                                    </tr>
+                                    <tr>
+                                      <td colspan="2" height="12" style="padding-top:8px; line-height:0; font-size:0;">
+                                        <!--[if mso]><v:roundrect xmlns:v="urn:schemas-microsoft-com:vml" arcsize="50%" strokecolor="#e5e5e5" strokeweight="1px" style="width:250%;height:12px;" fillcolor="#e5e5e5"><v:fill color="#e5e5e5" /></v:roundrect><![endif]-->
+                                        <!--[if !mso]><!-- -->
+                                        <div style="background:#e5e5e5; border-radius:4px; width:100%; height:12px;"></div>
+                                        <!--<![endif]-->
+                                      </td>
+                                    </tr> {% if goal.min_per_workout > 0 or goal.max_per_workout > 0 or goal.min_per_day > 0 or goal.max_per_day > 0 or goal.min_per_week > 0 or goal.max_per_week > 0 %} <tr>
+                                      <td style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#6b7280;padding-top: 7px;" colspan="2"><b>Limits:</b>
+                                        <ul style="margin: 0px;"> {% if goal.min_per_workout > 0 %}<li>min <b>{{ goal.min_per_workout|floatformat:0 }} {{ goal.metric }}</b> <span style="font-size:10px">/ workout</span></li>{% endif %} {% if goal.max_per_workout > 0 %}<li>max <b>{{ goal.max_per_workout|floatformat:0 }} {{ goal.metric }}</b> <span style="font-size:10px">/ workout</span></li>{% endif %} {% if goal.min_per_day > 0 %}<li>min <b>{{ goal.min_per_day|floatformat:0 }} {{ goal.metric }}</b> <span style="font-size:10px">/ day</span></li>{% endif %} {% if goal.max_per_day > 0 %}<li>max <b>{{ goal.max_per_day|floatformat:0 }} {{ goal.metric }}</b> <span style="font-size:10px">/ day</span></li>{% endif %} {% if goal.min_per_week > 0 %}<li>min <b>{{ goal.min_per_week|floatformat:0 }} {{ goal.metric }}</b> <span style="font-size:10px">/ week</span></li>{% endif %} {% if goal.max_per_week > 0 %}<li>max <b>{{ goal.max_per_week|floatformat:0 }} {{ goal.metric }}</b> <span style="font-size:10px">/ week</span></li>{% endif %} </ul>
+                                      </td>
+                                    </tr> {% endif %}
+                                  </table>
+                                </td>
+                              </tr>
+                            </table> {% endfor %} </td>
+                        </tr>
+                      </tbody>
+                    </table>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td></tr></table><![endif]-->
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--[if mso | IE]></td></tr></table><![endif]--> {% if goal_equalizer_note %}
+    <!-- Goal Equalizer -->
+    <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" class="" role="presentation" style="width:600px;" width="600" bgcolor="#075985" ><tr><td style="line-height:0px;font-size:0px;mso-line-height-rule:exactly;"><![endif]-->
+    <div style="background:#075985;background-color:#075985;margin:0px auto;max-width:600px;">
+      <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="background:#075985;background-color:#075985;width:100%;">
+        <tbody>
+          <tr>
+            <td style="direction:ltr;font-size:0px;padding:20px 0;text-align:center;">
+              <!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" cellspacing="0"><tr><td class="" style="vertical-align:middle;width:600px;" ><![endif]-->
+              <div class="mj-column-per-100 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:middle;width:100%;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="vertical-align:middle;" width="100%">
+                  <tbody>
+                    <tr>
+                      <td align="center" style="font-size:0px;padding:10px 25px;padding-top:20px;padding-bottom:10px;word-break:break-word;">
+                        <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:18px;line-height:1.2;text-align:center;color:#ffffff;">Make it fair by enabling the Goal Equalizer!</div>
+                      </td>
+                    </tr>
+                    <tr>
+                      <td align="center" style="font-size:0px;padding:10px 25px;padding-right:100px;padding-bottom:20px;padding-left:100px;word-break:break-word;">
+                        <p style="border-top:solid 1px #ffffff;font-size:1px;margin:0px auto;width:100%;">
+                        </p>
+                        <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" style="border-top:solid 1px #ffffff;font-size:1px;margin:0px auto;width:400px;" role="presentation" width="400px" ><tr><td style="height:0;line-height:0;"> &nbsp;
+</td></tr></table><![endif]-->
+                      </td>
+                    </tr>
+                    <tr>
+                      <td align="center" style="font-size:0px;padding:10px 25px;padding-top:0px;padding-bottom:25px;word-break:break-word;">
+                        <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:11px;line-height:1.2;text-align:center;color:#e5e7eb;">Everyone has a unique <b>Basal Metabolic Rate (BMR)</b>, dependent on factors like age, gender, height, and weight. The default goals are calibrated for a 35y/o 1.8m tall man. To ensure a fair competition, login and personalise your goals using the "Goal Equalizer" right below your personal settings.</div>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td></tr></table><![endif]-->
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--[if mso | IE]></td></tr></table><![endif]--> {% endif %}
+    <!-- Final remarks -->
+    <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" class="" role="presentation" style="width:600px;" width="600" bgcolor="white" ><tr><td style="line-height:0px;font-size:0px;mso-line-height-rule:exactly;"><![endif]-->
+    <div style="background:white;background-color:white;margin:0px auto;max-width:600px;">
+      <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="background:white;background-color:white;width:100%;">
+        <tbody>
+          <tr>
+            <td style="direction:ltr;font-size:0px;padding:20px 0;padding-bottom:0px;padding-top:0px;text-align:center;">
+              <!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" cellspacing="0"><tr><td class="" style="vertical-align:top;width:600px;" ><![endif]-->
+              <div class="mj-column-per-100 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:top;width:100%;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="vertical-align:top;" width="100%">
+                  <tbody> {% if goal_equalizer_note is None %} <tr>
+                      <td align="center" style="font-size:0px;padding:10px 25px;word-break:break-word;">
+                        <p style="border-top:solid 2px #E1E8ED;font-size:1px;margin:0px auto;width:100%;">
+                        </p>
+                        <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" style="border-top:solid 2px #E1E8ED;font-size:1px;margin:0px auto;width:550px;" role="presentation" width="550px" ><tr><td style="height:0;line-height:0;"> &nbsp;
+</td></tr></table><![endif]-->
+                      </td>
+                    </tr> {% endif %} <tr>
+                      <td align="left" style="font-size:0px;padding:10px 25px;padding-top:20px;word-break:break-word;">
+                        <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;">Login to see who else is participating, change your team, and adjust the goal equalizers:</div>
+                      </td>
+                    </tr>
+                    <tr>
+                      <td align="center" vertical-align="middle" style="font-size:0px;padding:10px 25px;padding-top:5px;padding-bottom:2px;word-break:break-word;">
+                        <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="border-collapse:separate;line-height:100%;">
+                          <tbody>
+                            <tr>
+                              <td align="center" bgcolor="#075985" role="presentation" style="border:none;border-radius:24px;cursor:auto;mso-padding-alt:10px 25px;background:#075985;" valign="middle">
+                                <a href="{{ MAIN_HOST }}/login" style="display:inline-block;background:#075985;color:#ffffff;font-family:Helvetica, Arial, sans-serif, Helvetica, Arial, sans-serif;font-size:13px;font-weight:normal;line-height:120%;margin:0;text-decoration:none;text-transform:none;padding:10px 25px;mso-padding-alt:0px;border-radius:24px;" target="_blank"> LOGIN </a>
+                              </td>
+                            </tr>
+                          </tbody>
+                        </table>
+                      </td>
+                    </tr>
+                    <tr>
+                      <td align="left" style="font-size:0px;padding:10px 25px;padding-top:0px;padding-bottom:10px;word-break:break-word;">
+                        <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;">
+                          <p>Enjoy the Competition.</p>
+                          <p>Good luck!</p>
+                        </div>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td></tr></table><![endif]-->
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--[if mso | IE]></td></tr></table><![endif]-->
+    <!-- Footnote -->
+    <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;">
+      <tbody>
+        <tr>
+          <td>
+            <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" class="" role="presentation" style="width:600px;" width="600" ><tr><td style="line-height:0px;font-size:0px;mso-line-height-rule:exactly;"><![endif]-->
+            <div style="margin:0px auto;max-width:600px;">
+              <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;">
+                <tbody>
+                  <tr>
+                    <td style="direction:ltr;font-size:0px;padding:20px 0;text-align:center;">
+                      <!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" cellspacing="0"><tr><td class="" style="vertical-align:middle;width:600px;" ><![endif]-->
+                      <div class="mj-column-per-100 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:middle;width:100%;">
+                        <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="vertical-align:middle;" width="100%">
+                          <tbody>
+                            <tr>
+                              <td align="center" style="font-size:0px;padding:10px 25px;padding-top:0;padding-bottom:0px;word-break:break-word;">
+                                <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:11px;line-height:1.2;text-align:center;color:#9a9ea6;"><span class="apple-link">Workout Challenge</span>
+                                  <br> Any issues? <a href="mailto:{{ EMAIL_REPLY_TO }}">Send us an Email</a>. <br> See the <a href="https://github.com/vanalmsick/workout_challenge">Source Code</a>.
+                                </div>
+                              </td>
+                            </tr>
+                          </tbody>
+                        </table>
+                      </div>
+                      <!--[if mso | IE]></td></tr></table><![endif]-->
+                    </td>
+                  </tr>
+                </tbody>
+              </table>
+            </div>
+            <!--[if mso | IE]></td></tr></table><![endif]-->
+          </td>
+        </tr>
+      </tbody>
+    </table>
+  </div>
+</body>
+
+</html>

src-backend/custom_user/templates/email_competition_start.mjml

@@ -0,0 +1,146 @@
+<mjml>
+  <!-- Written with https://mjml.io/ -->
+  <mj-head>
+    <mj-preview>The "{{ competition.name }}" competition kicks off tomorrow! Give it a strong start, build momentum – your best is waiting! But first, here's how the goals work and how to earn points.</mj-preview>
+    <mj-attributes>
+      <mj-text line-height="1.2" />
+    </mj-attributes>
+  </mj-head>
+  <mj-body background-color="#E1E8ED">
+    <mj-hero mode="fixed-height" height="200px" background-url="{{ MAIN_HOST }}/running_email.jpg" background-size="cover" background-repeat="no-repeat" background-color="#075985">
+      <mj-text align="center" font-size="30px" color="#ffffff" padding-bottom="10px" padding-top="45px" css-class="no-invert">
+        Workout Challenge
+      </mj-text>
+      <mj-button background-color="#075985" color="#fff" border-radius="24px" border="1px solid #fff" href="{{ MAIN_HOST }}/login" font-family="Helvetica, Arial, sans-serif" padding="10px 25px">
+        LOGIN
+      </mj-button>
+    </mj-hero>
+    <mj-section padding-top="0px" padding-bottom="0px" background-color="white">
+      <mj-column padding-bottom="0px">
+        <mj-text padding-bottom="0px">
+          <p>Hi {{ first_name }},</p>
+          <p>The "{{ competition.name }}" competition kicks off tomorrow!</p>
+          <p>Give it a strong start, build momentum – your best is waiting!</p>
+          <p>But first, here's how the goals work and how to earn points.</p>
+        </mj-text>
+        <mj-divider border-color="#E1E8ED" border-width="2px"></mj-divider>
+      </mj-column>
+    </mj-section>
+    <mj-section background-color="white" padding-top="5px">
+      <mj-column padding-top="0px">
+        <mj-text padding-top="10px" padding-bottom="15px">
+          <h3>How to earn activity points?</h3>
+          <ul>
+            <li>Each competition has its own activity goals.</li>
+            <li>You earn <b>1 point for every 1%</b> progress toward a goal.</li>
+            <li>For example, if the goal is 100 minutes of exercise and you work out 50 minutes, you earn 50 points.</li>
+            <li><i>Note:</i> Some goals have <b>minimum or maximum limits</b>. Activities above/below these limits won’t earn you points and are marked with an asterisk (*).</li>
+            <li>Hover over a goal to view its limits, or over the asterisk for more details.</li>
+          </ul>
+        </mj-text>
+      </mj-column>
+      <mj-column>
+        <mj-raw>
+          
+          <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="" width="100%">
+            <tbody>
+              <tr>
+                <td align="left" style="font-size:0px;padding:10px 25px;padding-bottom:0px;word-break:break-word;">
+                  <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;">
+                    <h3>Activity Goals:</h3>
+                  </div>
+                </td>
+              </tr>
+              <tr>
+                <td align="left" style="font-size:0px;padding:10px 25px;padding-top:0px;word-break:break-word;">
+
+                  {% for goal in goals %}
+                  <table cellpadding="0" cellspacing="0" border="0" width="100%">
+                    <tr>
+                      <td style="height:10px; font-size:0; line-height:0;">&nbsp;</td>
+                    </tr>
+                    <tr>
+                      <td style="background-color:#f9f9f9; border-radius:8px; padding:18px;">
+                        <table cellpadding="0" cellspacing="0" border="0" width="100%">
+                          <tr>
+                            <td style="font-size:14px; line-height:16px; mso-line-height-rule:exactly; font-weight:bold; color: #6b7280;">{{ goal.name }}</td>
+                            <td align="right" style="font-size:14px; line-height:16px; mso-line-height-rule:exactly; color: #6b7280;">{{ goal.goal|floatformat:0 }} {{ goal.metric }} <span style="font-size:10px;">/ {{ goal.period }}</span></td>
+                          </tr>
+                          <tr>
+                            <td colspan="2" height="12" style="padding-top:8px; line-height:0; font-size:0;">
+                              <!--[if mso]>
+                              <v:roundrect xmlns:v="urn:schemas-microsoft-com:vml" arcsize="50%" strokecolor="#e5e5e5" strokeweight="1px" style="width:250%;height:12px;" fillcolor="#e5e5e5">
+                                <v:fill color="#e5e5e5" />
+                              </v:roundrect>
+                              <![endif]-->
+                              <!--[if !mso]><!-- -->
+                              <div style="background:#e5e5e5; border-radius:4px; width:100%; height:12px;">
+                              </div>
+                              <!--<![endif]-->
+                            </td>
+                          </tr>
+                          {% if goal.min_per_workout > 0 or goal.max_per_workout > 0 or goal.min_per_day > 0 or goal.max_per_day > 0 or goal.min_per_week > 0 or goal.max_per_week > 0 %}
+                          <tr>
+                            <td style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#6b7280;padding-top: 7px;" colspan="2"><b>Limits:</b>
+                              <ul style="margin: 0px;">
+                                {% if goal.min_per_workout > 0 %}<li>min <b>{{ goal.min_per_workout|floatformat:0 }} {{ goal.metric }}</b> <span style="font-size:10px">/ workout</span></li>{% endif %}
+                                {% if goal.max_per_workout > 0 %}<li>max <b>{{ goal.max_per_workout|floatformat:0 }} {{ goal.metric }}</b> <span style="font-size:10px">/ workout</span></li>{% endif %}
+                                {% if goal.min_per_day > 0 %}<li>min <b>{{ goal.min_per_day|floatformat:0 }} {{ goal.metric }}</b> <span style="font-size:10px">/ day</span></li>{% endif %}
+                                {% if goal.max_per_day > 0 %}<li>max <b>{{ goal.max_per_day|floatformat:0 }} {{ goal.metric }}</b> <span style="font-size:10px">/ day</span></li>{% endif %}
+                                {% if goal.min_per_week > 0 %}<li>min <b>{{ goal.min_per_week|floatformat:0 }} {{ goal.metric }}</b> <span style="font-size:10px">/ week</span></li>{% endif %}
+                                {% if goal.max_per_week > 0 %}<li>max <b>{{ goal.max_per_week|floatformat:0 }} {{ goal.metric }}</b> <span style="font-size:10px">/ week</span></li>{% endif %}
+                              </ul>
+                            </td>
+                          </tr>
+                          {% endif %}
+                        </table>
+                      </td>
+                    </tr>
+                  </table>
+                  {% endfor %}
+
+                </td>
+              </tr>
+            </tbody>
+          </table>
+        </mj-raw>
+      </mj-column>
+    </mj-section>
+    
+    <mj-raw> {% if goal_equalizer_note %} </mj-raw>
+    <!-- Goal Equalizer -->
+    <mj-section background-color="#075985" vertical-align="middle">
+      <mj-column width="100%" vertical-align="middle">
+        <mj-text align="center" color="#ffffff" font-size="18px" padding-bottom="10px" padding-top="20px">Make it fair by enabling the Goal Equalizer!</mj-text>
+        <mj-divider border-color="#fff" border-style="solid" border-width="1px" padding-left="100px" padding-right="100px" padding-bottom="20px"></mj-divider>
+        <mj-text align="center" color="#e5e7eb" font-size="11px" padding-bottom="25px" padding-top="0px">Everyone has a unique <b>Basal Metabolic Rate (BMR)</b>, dependent on factors like age, gender, height, and weight. The default goals are calibrated for a 35y/o 1.8m tall man. To ensure a fair competition, login and personalise your goals using the "Goal Equalizer" right below your personal settings.</mj-text>
+      </mj-column>
+    </mj-section>
+    <mj-raw> {% endif %} </mj-raw>
+    
+    <!-- Final remarks -->
+    <mj-section padding-top="0px" padding-bottom="0px" background-color="white">
+      <mj-column>
+        <mj-raw> {% if goal_equalizer_note is None %} </mj-raw>
+          <mj-divider border-color="#E1E8ED" border-width="2px"></mj-divider>
+        <mj-raw> {% endif %} </mj-raw>
+        <mj-text padding-top="20px">Login to see who else is participating, change your team, and adjust the goal equalizers:</mj-text>
+        <mj-button align="center" background-color="#075985" color="#ffffff" border-radius="24px" href="{{ MAIN_HOST }}/login" font-family="Helvetica, Arial, sans-serif, Helvetica, Arial, sans-serif" padding-bottom="2px" padding-top="5px">LOGIN</mj-button>
+        <mj-text padding-bottom="10px" padding-top="0px">
+          <p>Enjoy the Competition.</p>
+          <p>Good luck!</p>
+        </mj-text>
+      </mj-column>
+    </mj-section>
+    
+    <!-- Footnote -->
+    <mj-section full-width="full-width">
+      <mj-column width="100%" vertical-align="middle">
+        <mj-text align="center" color="#9a9ea6" font-size="11px" padding-bottom="0px" padding-top="0">
+          <span class="apple-link">Workout Challenge</span>
+          <br> Any issues? <a href="mailto:{{ EMAIL_REPLY_TO }}">Send us an Email</a>. <br> See the <a href="https://github.com/vanalmsick/workout_challenge">Source Code</a>.
+        </mj-text>
+      </mj-column>
+    </mj-section>
+  </mj-body>
+</mjml>

src-backend/custom_user/templates/email_leaderboard.html

@@ -0,0 +1,497 @@
+<!doctype html>
+<html xmlns="http://www.w3.org/1999/xhtml" xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office">
+
+<head>
+  <title>
+  </title>
+  <!--[if !mso]><!-->
+  <meta http-equiv="X-UA-Compatible" content="IE=edge">
+  <!--<![endif]-->
+  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <style type="text/css">
+    #outlook a {
+      padding: 0;
+    }
+
+    body {
+      margin: 0;
+      padding: 0;
+      -webkit-text-size-adjust: 100%;
+      -ms-text-size-adjust: 100%;
+    }
+
+    table,
+    td {
+      border-collapse: collapse;
+      mso-table-lspace: 0pt;
+      mso-table-rspace: 0pt;
+    }
+
+    img {
+      border: 0;
+      height: auto;
+      line-height: 100%;
+      outline: none;
+      text-decoration: none;
+      -ms-interpolation-mode: bicubic;
+    }
+
+    p {
+      display: block;
+      margin: 13px 0;
+    }
+  </style>
+  <!--[if mso]>
+    <noscript>
+    <xml>
+    <o:OfficeDocumentSettings>
+      <o:AllowPNG/>
+      <o:PixelsPerInch>96</o:PixelsPerInch>
+    </o:OfficeDocumentSettings>
+    </xml>
+    </noscript>
+    <![endif]-->
+  <!--[if lte mso 11]>
+    <style type="text/css">
+      .mj-outlook-group-fix { width:100% !important; }
+    </style>
+    <![endif]-->
+  <!--[if !mso]><!-->
+  <link href="https://fonts.googleapis.com/css?family=Ubuntu:300,400,500,700" rel="stylesheet" type="text/css">
+  <style type="text/css">
+    @import url(https://fonts.googleapis.com/css?family=Ubuntu:300,400,500,700);
+  </style>
+  <!--<![endif]-->
+  <style type="text/css">
+    @media only screen and (min-width:480px) {
+      .mj-column-per-100 {
+        width: 100% !important;
+        max-width: 100%;
+      }
+
+      .mj-column-per-50 {
+        width: 50% !important;
+        max-width: 50%;
+      }
+    }
+  </style>
+  <style media="screen and (min-width:480px)">
+    .moz-text-html .mj-column-per-100 {
+      width: 100% !important;
+      max-width: 100%;
+    }
+
+    .moz-text-html .mj-column-per-50 {
+      width: 50% !important;
+      max-width: 50%;
+    }
+  </style>
+  <style type="text/css">
+  </style>
+  <style type="text/css">
+  </style>
+</head>
+
+<body style="word-spacing:normal;background-color:#E1E8ED;">
+  <div style="display:none;font-size:1px;color:#ffffff;line-height:1px;max-height:0px;max-width:0px;opacity:0;overflow:hidden;"> New week - fresh start! But first let's see where you're on the Leaderbaord for last week! </div>
+  <div style="background-color:#E1E8ED;">
+    <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:600px;" width="600" ><tr><td style="line-height:0;font-size:0;mso-line-height-rule:exactly;"><v:image style="border:0;mso-position-horizontal:center;position:absolute;top:0;width:600px;z-index:-3;" src="{{ MAIN_HOST }}/running_email.jpg" xmlns:v="urn:schemas-microsoft-com:vml" /><![endif]-->
+    <div style="margin:0 auto;max-width:600px;">
+      <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;">
+        <tbody>
+          <tr style="vertical-align:top;">
+            <td background="{{ MAIN_HOST }}/running_email.jpg" style="background:#075985 url('{{ MAIN_HOST }}/running_email.jpg') no-repeat center center / cover;background-position:center center;background-repeat:no-repeat;padding:0px;vertical-align:top;" height="200">
+              <!--[if mso | IE]><table border="0" cellpadding="0" cellspacing="0" style="width:600px;" width="600" ><tr><td style=""><![endif]-->
+              <div class="mj-hero-content" style="margin:0px auto;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;margin:0px;">
+                  <tbody>
+                    <tr>
+                      <td style="">
+                        <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;margin:0px;">
+                          <tbody>
+                            <tr>
+                              <td align="center" class="no-invert" style="font-size:0px;padding:10px 25px;padding-top:45px;padding-bottom:10px;word-break:break-word;">
+                                <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:30px;line-height:1.2;text-align:center;color:#ffffff;">Workout Challenge</div>
+                              </td>
+                            </tr>
+                            <tr>
+                              <td align="center" style="font-size:0px;padding:10px 25px;word-break:break-word;">
+                                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="border-collapse:separate;line-height:100%;">
+                                  <tbody>
+                                    <tr>
+                                      <td align="center" bgcolor="#075985" role="presentation" style="border:1px solid #fff;border-radius:24px;cursor:auto;mso-padding-alt:10px 25px;background:#075985;" valign="middle">
+                                        <a href="{{ MAIN_HOST }}/login" style="display:inline-block;background:#075985;color:#ffffff;font-family:Helvetica, Arial, sans-serif;font-size:13px;font-weight:normal;line-height:120%;margin:0;text-decoration:none;text-transform:none;padding:10px 25px;mso-padding-alt:0px;border-radius:24px;" target="_blank"> LOGIN </a>
+                                      </td>
+                                    </tr>
+                                  </tbody>
+                                </table>
+                              </td>
+                            </tr>
+                          </tbody>
+                        </table>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td></tr></table><![endif]-->
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--[if mso | IE]></td></tr></table><table align="center" border="0" cellpadding="0" cellspacing="0" class="" role="presentation" style="width:600px;" width="600" bgcolor="white" ><tr><td style="line-height:0px;font-size:0px;mso-line-height-rule:exactly;"><![endif]-->
+    <div style="background:white;background-color:white;margin:0px auto;max-width:600px;">
+      <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="background:white;background-color:white;width:100%;">
+        <tbody>
+          <tr>
+            <td style="direction:ltr;font-size:0px;padding:20px 0;padding-bottom:0px;padding-top:0px;text-align:center;">
+              <!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" cellspacing="0"><tr><td class="" style="vertical-align:top;width:600px;" ><![endif]-->
+              <div class="mj-column-per-100 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:top;width:100%;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" width="100%">
+                  <tbody>
+                    <tr>
+                      <td style="vertical-align:top;padding-bottom:0px;">
+                        <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="" width="100%">
+                          <tbody>
+                            <tr>
+                              <td align="left" style="font-size:0px;padding:10px 25px;padding-bottom:0px;word-break:break-word;">
+                                <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;">
+                                  <p>Hi {{ first_name }},</p>
+                                  <p>Let's see where you're on the leaderboard!</p>
+                                </div>
+                              </td>
+                            </tr>
+                            <tr>
+                              <td align="center" style="font-size:0px;padding:10px 25px;word-break:break-word;">
+                                <p style="border-top:solid 2px #E1E8ED;font-size:1px;margin:0px auto;width:100%;">
+                                </p>
+                                <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" style="border-top:solid 2px #E1E8ED;font-size:1px;margin:0px auto;width:550px;" role="presentation" width="550px" ><tr><td style="height:0;line-height:0;"> &nbsp;
+</td></tr></table><![endif]-->
+                              </td>
+                            </tr>
+                            <tr>
+                              <td align="left" style="font-size:0px;padding:10px 25px;padding-top:5px;padding-bottom:0px;word-break:break-word;">
+                                <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;">
+                                  <h3>This week's leaderboard:</h3>
+                                </div>
+                              </td>
+                            </tr>
+                          </tbody>
+                        </table>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td></tr></table><![endif]-->
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--[if mso | IE]></td></tr></table><![endif]-->
+    <!-- This week leaderbaord section -->{% for competition in competitions_7d %}
+    <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" class="" role="presentation" style="width:600px;" width="600" bgcolor="white" ><tr><td style="line-height:0px;font-size:0px;mso-line-height-rule:exactly;"><![endif]-->
+    <div style="background:white;background-color:white;margin:0px auto;max-width:600px;">
+      <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="background:white;background-color:white;width:100%;">
+        <tbody>
+          <tr>
+            <td style="direction:ltr;font-size:0px;padding:20px 0;padding-bottom:10px;padding-top:0px;text-align:center;">
+              <!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" cellspacing="0"><tr><td class="" style="vertical-align:top;width:300px;" ><![endif]-->
+              <div class="mj-column-per-50 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:top;width:100%;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="vertical-align:top;" width="100%">
+                  <tbody>
+                    <tr>
+                      <td align="left" style="font-size:0px;padding:10px 25px;word-break:break-word;">
+                        <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;"><b><span style="color:#075985">{{ competition.competition.name }}</span> - Team</b></div>
+                      </td>
+                    </tr>
+                    <tr>
+                      <td align="left" style="font-size:0px;padding:10px 25px;word-break:break-word;">
+                        <table cellpadding="0" cellspacing="0" width="100%" border="0" style="color:#000000;font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:22px;table-layout:auto;width:100%;border:none;">
+                          <mj-raw> {% for team in competition.leaderboard.team %} </mj-raw>
+                          <tr style="border-top:1px solid #ecedee;border-bottom:1px solid #ecedee;text-align:left;padding:15px 0;">
+                            <td style="padding: 0 15px 0 0;">{% if team.rank is not None %}#{{ team.rank }}{% else %}-/-{% endif %}</td>
+                            <td style="padding: 0 15px;">{{ team.name }}</td>
+                            <td style="padding: 0 0 0 15px;">{% if team.total_capped is not None %}{{ team.total_capped|floatformat:0 }}P{% endif %}</td>
+                          </tr>
+                          <mj-raw> {% endfor %} </mj-raw>
+                        </table>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td><td class="" style="vertical-align:top;width:300px;" ><![endif]-->
+              <div class="mj-column-per-50 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:top;width:100%;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="vertical-align:top;" width="100%">
+                  <tbody>
+                    <tr>
+                      <td align="left" style="font-size:0px;padding:10px 25px;word-break:break-word;">
+                        <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;"><b><span style="color:#075985">{{ competition.competition.name }}</span> - Individual</b></div>
+                      </td>
+                    </tr>
+                    <tr>
+                      <td align="left" style="font-size:0px;padding:10px 25px;word-break:break-word;">
+                        <table cellpadding="0" cellspacing="0" width="100%" border="0" style="color:#000000;font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:22px;table-layout:auto;width:100%;border:none;">
+                          <mj-raw> {% for individual in competition.leaderboard.individual %} </mj-raw>
+                          <tr style="border-top:1px solid #ecedee;border-bottom:1px solid #ecedee;text-align:left;padding:15px 0;">
+                            <td style="padding: 0 15px 0 0;">{% if individual.rank is not None %}#{{ individual.rank }}{% else %}-/-{% endif %}</td>
+                            <td style="padding: 0 15px;">{{ individual.username }}</td>
+                            <td style="padding: 0 0 0 15px;">{% if individual.total_capped is not None %}{{ individual.total_capped|floatformat:0 }}P{% endif %}</td>
+                          </tr>
+                          <mj-raw> {% endfor %} </mj-raw>
+                        </table>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td></tr></table><![endif]-->
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--[if mso | IE]></td></tr></table><![endif]--> {% endfor %}
+    <!-- All time leaderbaord section -->
+    <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" class="" role="presentation" style="width:600px;" width="600" bgcolor="white" ><tr><td style="line-height:0px;font-size:0px;mso-line-height-rule:exactly;"><![endif]-->
+    <div style="background:white;background-color:white;margin:0px auto;max-width:600px;">
+      <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="background:white;background-color:white;width:100%;">
+        <tbody>
+          <tr>
+            <td style="direction:ltr;font-size:0px;padding:20px 0;padding-bottom:0px;padding-top:0px;text-align:center;">
+              <!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" cellspacing="0"><tr><td class="" style="vertical-align:top;width:600px;" ><![endif]-->
+              <div class="mj-column-per-100 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:top;width:100%;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" width="100%">
+                  <tbody>
+                    <tr>
+                      <td style="vertical-align:top;padding-bottom:0px;">
+                        <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="" width="100%">
+                          <tbody>
+                            <tr>
+                              <td align="center" style="font-size:0px;padding:10px 25px;word-break:break-word;">
+                                <p style="border-top:solid 2px #E1E8ED;font-size:1px;margin:0px auto;width:100%;">
+                                </p>
+                                <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" style="border-top:solid 2px #E1E8ED;font-size:1px;margin:0px auto;width:550px;" role="presentation" width="550px" ><tr><td style="height:0;line-height:0;"> &nbsp;
+</td></tr></table><![endif]-->
+                              </td>
+                            </tr>
+                            <tr>
+                              <td align="left" style="font-size:0px;padding:10px 25px;padding-top:5px;padding-bottom:0px;word-break:break-word;">
+                                <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;">
+                                  <h3>All-time leaderboard:</h3>
+                                </div>
+                              </td>
+                            </tr>
+                          </tbody>
+                        </table>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td></tr></table><![endif]-->
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--[if mso | IE]></td></tr></table><![endif]--> {% for competition in competitions_all %}
+    <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" class="" role="presentation" style="width:600px;" width="600" bgcolor="white" ><tr><td style="line-height:0px;font-size:0px;mso-line-height-rule:exactly;"><![endif]-->
+    <div style="background:white;background-color:white;margin:0px auto;max-width:600px;">
+      <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="background:white;background-color:white;width:100%;">
+        <tbody>
+          <tr>
+            <td style="direction:ltr;font-size:0px;padding:20px 0;padding-bottom:10px;padding-top:0px;text-align:center;">
+              <!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" cellspacing="0"><tr><td class="" style="vertical-align:top;width:300px;" ><![endif]-->
+              <div class="mj-column-per-50 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:top;width:100%;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="vertical-align:top;" width="100%">
+                  <tbody>
+                    <tr>
+                      <td align="left" style="font-size:0px;padding:10px 25px;word-break:break-word;">
+                        <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;"><b><span style="color:#075985">{{ competition.competition.name }}</span> - Team</b></div>
+                      </td>
+                    </tr>
+                    <tr>
+                      <td align="left" style="font-size:0px;padding:10px 25px;word-break:break-word;">
+                        <table cellpadding="0" cellspacing="0" width="100%" border="0" style="color:#000000;font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:22px;table-layout:auto;width:100%;border:none;">
+                          <mj-raw> {% for team in competition.leaderboard.team %} </mj-raw>
+                          <tr style="border-top:1px solid #ecedee;border-bottom:1px solid #ecedee;text-align:left;padding:15px 0;">
+                            <td style="padding: 0 15px 0 0;">{% if team.rank is not None %}#{{ team.rank }}{% else %}-/-{% endif %}</td>
+                            <td style="padding: 0 15px;">{{ team.name }}</td>
+                            <td style="padding: 0 0 0 15px;">{% if team.total_capped is not None %}{{ team.total_capped|floatformat:0 }}P{% endif %}</td>
+                          </tr>
+                          <mj-raw> {% endfor %} </mj-raw>
+                        </table>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td><td class="" style="vertical-align:top;width:300px;" ><![endif]-->
+              <div class="mj-column-per-50 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:top;width:100%;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="vertical-align:top;" width="100%">
+                  <tbody>
+                    <tr>
+                      <td align="left" style="font-size:0px;padding:10px 25px;word-break:break-word;">
+                        <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;"><b><span style="color:#075985">{{ competition.competition.name }}</span> - Individual</b></div>
+                      </td>
+                    </tr>
+                    <tr>
+                      <td align="left" style="font-size:0px;padding:10px 25px;word-break:break-word;">
+                        <table cellpadding="0" cellspacing="0" width="100%" border="0" style="color:#000000;font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:22px;table-layout:auto;width:100%;border:none;">
+                          <mj-raw> {% for individual in competition.leaderboard.individual %} </mj-raw>
+                          <tr style="border-top:1px solid #ecedee;border-bottom:1px solid #ecedee;text-align:left;padding:15px 0;">
+                            <td style="padding: 0 15px 0 0;">{% if individual.rank is not None %}#{{ individual.rank }}{% else %}-/-{% endif %}</td>
+                            <td style="padding: 0 15px;">{{ individual.username }}</td>
+                            <td style="padding: 0 0 0 15px;">{% if individual.total_capped is not None %}{{ individual.total_capped|floatformat:0 }}P{% endif %}</td>
+                          </tr>
+                          <mj-raw> {% endfor %} </mj-raw>
+                        </table>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td></tr></table><![endif]-->
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--[if mso | IE]></td></tr></table><![endif]--> {% endfor %}{% if goal_equalizer_note %}
+    <!-- Goal Equalizer -->
+    <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" class="" role="presentation" style="width:600px;" width="600" bgcolor="#075985" ><tr><td style="line-height:0px;font-size:0px;mso-line-height-rule:exactly;"><![endif]-->
+    <div style="background:#075985;background-color:#075985;margin:0px auto;max-width:600px;">
+      <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="background:#075985;background-color:#075985;width:100%;">
+        <tbody>
+          <tr>
+            <td style="direction:ltr;font-size:0px;padding:20px 0;text-align:center;">
+              <!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" cellspacing="0"><tr><td class="" style="vertical-align:middle;width:600px;" ><![endif]-->
+              <div class="mj-column-per-100 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:middle;width:100%;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="vertical-align:middle;" width="100%">
+                  <tbody>
+                    <tr>
+                      <td align="center" style="font-size:0px;padding:10px 25px;padding-top:20px;padding-bottom:10px;word-break:break-word;">
+                        <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:18px;line-height:1.2;text-align:center;color:#ffffff;">Make it fair by enabling the Goal Equalizer!</div>
+                      </td>
+                    </tr>
+                    <tr>
+                      <td align="center" style="font-size:0px;padding:10px 25px;padding-right:100px;padding-bottom:20px;padding-left:100px;word-break:break-word;">
+                        <p style="border-top:solid 1px #ffffff;font-size:1px;margin:0px auto;width:100%;">
+                        </p>
+                        <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" style="border-top:solid 1px #ffffff;font-size:1px;margin:0px auto;width:400px;" role="presentation" width="400px" ><tr><td style="height:0;line-height:0;"> &nbsp;
+</td></tr></table><![endif]-->
+                      </td>
+                    </tr>
+                    <tr>
+                      <td align="center" style="font-size:0px;padding:10px 25px;padding-top:0px;padding-bottom:25px;word-break:break-word;">
+                        <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:11px;line-height:1.2;text-align:center;color:#e5e7eb;">Everyone has a unique <b>Basal Metabolic Rate (BMR)</b>, dependent on factors like age, gender, height, and weight. The default goals are calibrated for a 35y/o 1.8m tall man. To ensure a fair competition, login and personalise your goals using the "Goal Equalizer" right below your personal settings.</div>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td></tr></table><![endif]-->
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--[if mso | IE]></td></tr></table><![endif]--> {% endif %}
+    <!-- Final remarks -->
+    <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" class="" role="presentation" style="width:600px;" width="600" bgcolor="white" ><tr><td style="line-height:0px;font-size:0px;mso-line-height-rule:exactly;"><![endif]-->
+    <div style="background:white;background-color:white;margin:0px auto;max-width:600px;">
+      <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="background:white;background-color:white;width:100%;">
+        <tbody>
+          <tr>
+            <td style="direction:ltr;font-size:0px;padding:20px 0;padding-bottom:15px;padding-top:0px;text-align:center;">
+              <!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" cellspacing="0"><tr><td class="" style="vertical-align:top;width:600px;" ><![endif]-->
+              <div class="mj-column-per-100 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:top;width:100%;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="vertical-align:top;" width="100%">
+                  <tbody> {% if not goal_equalizer_note %} <tr>
+                      <td align="center" style="font-size:0px;padding:10px 25px;padding-bottom:0px;word-break:break-word;">
+                        <p style="border-top:solid 2px #E1E8ED;font-size:1px;margin:0px auto;width:100%;">
+                        </p>
+                        <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" style="border-top:solid 2px #E1E8ED;font-size:1px;margin:0px auto;width:550px;" role="presentation" width="550px" ><tr><td style="height:0;line-height:0;"> &nbsp;
+</td></tr></table><![endif]-->
+                      </td>
+                    </tr> {% endif %} <tr>
+                      <td align="left" style="font-size:0px;padding:10px 25px;padding-top:20px;word-break:break-word;">
+                        <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;">Login to see more detailed analyses, charts, and breakdowns:</div>
+                      </td>
+                    </tr>
+                    <tr>
+                      <td align="center" vertical-align="middle" style="font-size:0px;padding:10px 25px;padding-top:5px;padding-bottom:5px;word-break:break-word;">
+                        <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="border-collapse:separate;line-height:100%;">
+                          <tbody>
+                            <tr>
+                              <td align="center" bgcolor="#075985" role="presentation" style="border:none;border-radius:24px;cursor:auto;mso-padding-alt:10px 25px;background:#075985;" valign="middle">
+                                <a href="{{ MAIN_HOST }}/login" style="display:inline-block;background:#075985;color:#ffffff;font-family:Helvetica, Arial, sans-serif, Helvetica, Arial, sans-serif;font-size:13px;font-weight:normal;line-height:120%;margin:0;text-decoration:none;text-transform:none;padding:10px 25px;mso-padding-alt:0px;border-radius:24px;" target="_blank"> LOGIN </a>
+                              </td>
+                            </tr>
+                          </tbody>
+                        </table>
+                      </td>
+                    </tr>
+                    <tr>
+                      <td align="left" style="font-size:0px;padding:10px 25px;padding-top:0px;padding-bottom:0px;word-break:break-word;">
+                        <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;">
+                          <p>Enjoy the Competition.</p>
+                          <p>Good luck!</p>
+                        </div>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td></tr></table><![endif]-->
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--[if mso | IE]></td></tr></table><![endif]-->
+    <!-- Footnote -->
+    <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;">
+      <tbody>
+        <tr>
+          <td>
+            <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" class="" role="presentation" style="width:600px;" width="600" ><tr><td style="line-height:0px;font-size:0px;mso-line-height-rule:exactly;"><![endif]-->
+            <div style="margin:0px auto;max-width:600px;">
+              <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;">
+                <tbody>
+                  <tr>
+                    <td style="direction:ltr;font-size:0px;padding:20px 0;text-align:center;">
+                      <!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" cellspacing="0"><tr><td class="" style="vertical-align:middle;width:600px;" ><![endif]-->
+                      <div class="mj-column-per-100 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:middle;width:100%;">
+                        <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="vertical-align:middle;" width="100%">
+                          <tbody>
+                            <tr>
+                              <td align="center" style="font-size:0px;padding:10px 25px;padding-top:0;padding-bottom:0px;word-break:break-word;">
+                                <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:11px;line-height:1.2;text-align:center;color:#9a9ea6;"><span class="apple-link">Workout Challenge</span>
+                                  <br /> Any issues? <a href="mailto:{{ EMAIL_REPLY_TO }}">Send us an Email</a>. <br /> See the <a href="https://github.com/vanalmsick/workout_challenge">Source Code</a>.
+                                </div>
+                              </td>
+                            </tr>
+                          </tbody>
+                        </table>
+                      </div>
+                      <!--[if mso | IE]></td></tr></table><![endif]-->
+                    </td>
+                  </tr>
+                </tbody>
+              </table>
+            </div>
+            <!--[if mso | IE]></td></tr></table><![endif]-->
+          </td>
+        </tr>
+      </tbody>
+    </table>
+  </div>
+</body>
+
+</html>

src-backend/custom_user/templates/email_leaderboard.mjml

@@ -0,0 +1,145 @@
+<mjml>
+  <!-- Written with https://mjml.io/ -->
+  <mj-head>
+    <mj-preview>New week - fresh start! But first let's see where you're on the Leaderbaord for last week!</mj-preview>
+    <mj-attributes>
+      <mj-text line-height="1.2" />
+    </mj-attributes>
+  </mj-head>
+  <mj-body background-color="#E1E8ED">
+    <mj-hero mode="fixed-height" height="200px" background-url="{{ MAIN_HOST }}/running_email.jpg" background-size="cover" background-repeat="no-repeat" background-color="#075985">
+      <mj-text align="center" font-size="30px" color="#ffffff" padding-bottom="10px" padding-top="45px" css-class="no-invert">
+        Workout Challenge
+      </mj-text>
+      <mj-button background-color="#075985" color="#fff" border-radius="24px" border="1px solid #fff" href="{{ MAIN_HOST }}/login" font-family="Helvetica, Arial, sans-serif" padding="10px 25px">
+        LOGIN
+      </mj-button>
+    </mj-hero>
+    <mj-section padding-top="0px" padding-bottom="0px" background-color="white">
+      <mj-column padding-bottom="0px">
+        <mj-text padding-bottom="0px">
+          <p>Hi {{ first_name }},</p>
+          <p>Let's see where you're on the leaderboard!</p>
+        </mj-text>
+        <mj-divider border-color="#E1E8ED" border-width="2px"></mj-divider>
+        <mj-text padding-top="5px" padding-bottom="0px">
+          <h3>This week's leaderboard:</h3>
+        </mj-text>
+      </mj-column>
+    </mj-section>
+    
+    <!-- This week leaderbaord section -->
+    <mj-raw> {% for competition in competitions_7d %} </mj-raw>
+    <mj-section padding-top="0px" padding-bottom="10px" background-color="white">
+      <mj-column>
+        <mj-text>
+          <b><span style="color:#075985">{{ competition.competition.name }}</span> - Team</b>
+        </mj-text>
+        <mj-table>
+          <mj-raw> {% for team in competition.leaderboard.team %} </mj-raw>
+          <tr style="border-top:1px solid #ecedee;border-bottom:1px solid #ecedee;text-align:left;padding:15px 0;">
+            <td style="padding: 0 15px 0 0;">{% if team.rank is not None %}#{{ team.rank }}{% else %}-/-{% endif %}</td>
+            <td style="padding: 0 15px;">{{ team.name }}</td>
+            <td style="padding: 0 0 0 15px;">{% if team.total_capped is not None %}{{ team.total_capped|floatformat:0 }}P{% endif %}</td>
+          </tr>
+          <mj-raw> {% endfor %} </mj-raw>
+        </mj-table>
+      </mj-column>
+      <mj-column>
+        <mj-text>
+          <b><span style="color:#075985">{{ competition.competition.name }}</span> - Individual</b>
+        </mj-text>
+        <mj-table>
+          <mj-raw> {% for individual in competition.leaderboard.individual %} </mj-raw>
+          <tr style="border-top:1px solid #ecedee;border-bottom:1px solid #ecedee;text-align:left;padding:15px 0;">
+            <td style="padding: 0 15px 0 0;">{% if individual.rank is not None %}#{{ individual.rank }}{% else %}-/-{% endif %}</td>
+            <td style="padding: 0 15px;">{{ individual.username }}</td>
+            <td style="padding: 0 0 0 15px;">{% if individual.total_capped is not None %}{{ individual.total_capped|floatformat:0 }}P{% endif %}</td>
+          </tr>
+          <mj-raw> {% endfor %} </mj-raw>
+        </mj-table>
+      </mj-column>
+    </mj-section>
+    <mj-raw> {% endfor %} </mj-raw>
+    
+    <!-- All time leaderbaord section -->
+    <mj-section padding-top="0px" padding-bottom="0px" background-color="white">
+      <mj-column padding-bottom="0px">
+        <mj-divider border-color="#E1E8ED" border-width="2px"></mj-divider>
+        <mj-text padding-top="5px" padding-bottom="0px">
+          <h3>All-time leaderboard:</h3>
+        </mj-text>
+      </mj-column>
+    </mj-section>
+    <mj-raw> {% for competition in competitions_all %} </mj-raw>
+    <mj-section padding-top="0px" padding-bottom="10px" background-color="white">
+      <mj-column>
+        <mj-text>
+          <b><span style="color:#075985">{{ competition.competition.name }}</span> - Team</b>
+        </mj-text>
+        <mj-table>
+          <mj-raw> {% for team in competition.leaderboard.team %} </mj-raw>
+          <tr style="border-top:1px solid #ecedee;border-bottom:1px solid #ecedee;text-align:left;padding:15px 0;">
+            <td style="padding: 0 15px 0 0;">{% if team.rank is not None %}#{{ team.rank }}{% else %}-/-{% endif %}</td>
+            <td style="padding: 0 15px;">{{ team.name }}</td>
+            <td style="padding: 0 0 0 15px;">{% if team.total_capped is not None %}{{ team.total_capped|floatformat:0 }}P{% endif %}</td>
+          </tr>
+          <mj-raw> {% endfor %} </mj-raw>
+        </mj-table>
+      </mj-column>
+      <mj-column>
+        <mj-text>
+          <b><span style="color:#075985">{{ competition.competition.name }}</span> - Individual</b>
+        </mj-text>
+        <mj-table>
+          <mj-raw> {% for individual in competition.leaderboard.individual %} </mj-raw>
+          <tr style="border-top:1px solid #ecedee;border-bottom:1px solid #ecedee;text-align:left;padding:15px 0;">
+            <td style="padding: 0 15px 0 0;">{% if individual.rank is not None %}#{{ individual.rank }}{% else %}-/-{% endif %}</td>
+            <td style="padding: 0 15px;">{{ individual.username }}</td>
+            <td style="padding: 0 0 0 15px;">{% if individual.total_capped is not None %}{{ individual.total_capped|floatformat:0 }}P{% endif %}</td>
+          </tr>
+          <mj-raw> {% endfor %} </mj-raw>
+        </mj-table>
+      </mj-column>
+    </mj-section>
+    <mj-raw> {% endfor %} </mj-raw>
+    
+    <mj-raw> {% if goal_equalizer_note %} </mj-raw>
+    <!-- Goal Equalizer -->
+    <mj-section background-color="#075985" vertical-align="middle">
+      <mj-column width="100%" vertical-align="middle">
+        <mj-text align="center" color="#ffffff" font-size="18px" padding-bottom="10px" padding-top="20px">Make it fair by enabling the Goal Equalizer!</mj-text>
+        <mj-divider border-color="#fff" border-style="solid" border-width="1px" padding-left="100px" padding-right="100px" padding-bottom="20px"></mj-divider>
+        <mj-text align="center" color="#e5e7eb" font-size="11px" padding-bottom="25px" padding-top="0px">Everyone has a unique <b>Basal Metabolic Rate (BMR)</b>, dependent on factors like age, gender, height, and weight. The default goals are calibrated for a 35y/o 1.8m tall man. To ensure a fair competition, login and personalise your goals using the "Goal Equalizer" right below your personal settings.</mj-text>
+      </mj-column>
+    </mj-section>
+    <mj-raw> {% endif %} </mj-raw>
+    
+    <!-- Final remarks -->
+    <mj-section padding-top="0px" padding-bottom="15px" background-color="white">
+      <mj-column>
+        <mj-raw> {% if not goal_equalizer_note %} </mj-raw>
+          <mj-divider padding-bottom="0px" border-color="#E1E8ED" border-width="2px"></mj-divider>
+        <mj-raw> {% endif %} </mj-raw>
+        <mj-text padding-top="20px">Login to see more detailed analyses, charts, and breakdowns:</mj-text>
+        <mj-button align="center" background-color="#075985" color="#fff" border-radius="24px" href="{{ MAIN_HOST }}/login" font-family="Helvetica, Arial, sans-serif, Helvetica, Arial, sans-serif" padding-bottom="5px" padding-top="5px">LOGIN</mj-button>
+        <mj-text padding-bottom="0px" padding-top="0px">
+          <p>Enjoy the Competition.</p>
+          <p>Good luck!</p>
+        </mj-text>
+      </mj-column>
+    </mj-section>
+    
+    <!-- Footnote -->
+    </mj-section>
+    <mj-section full-width="full-width">
+      <mj-column width="100%" vertical-align="middle">
+        <mj-text align="center" color="#9a9ea6" font-size="11px" padding-bottom="0px" padding-top="0">
+          <span class="apple-link">Workout Challenge</span>
+          <br/> Any issues? <a href="mailto:{{ EMAIL_REPLY_TO }}">Send us an Email</a>. <br/> See the <a href="https://github.com/vanalmsick/workout_challenge">Source Code</a>.
+        </mj-text>
+      </mj-column>
+    </mj-section>
+        
+  </mj-body>
+</mjml>

src-backend/custom_user/templates/email_log_workouts.html

@@ -0,0 +1,377 @@
+<!doctype html>
+<html xmlns="http://www.w3.org/1999/xhtml" xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office">
+
+<head>
+  <title>
+  </title>
+  <!--[if !mso]><!-->
+  <meta http-equiv="X-UA-Compatible" content="IE=edge">
+  <!--<![endif]-->
+  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <style type="text/css">
+    #outlook a {
+      padding: 0;
+    }
+
+    body {
+      margin: 0;
+      padding: 0;
+      -webkit-text-size-adjust: 100%;
+      -ms-text-size-adjust: 100%;
+    }
+
+    table,
+    td {
+      border-collapse: collapse;
+      mso-table-lspace: 0pt;
+      mso-table-rspace: 0pt;
+    }
+
+    img {
+      border: 0;
+      height: auto;
+      line-height: 100%;
+      outline: none;
+      text-decoration: none;
+      -ms-interpolation-mode: bicubic;
+    }
+
+    p {
+      display: block;
+      margin: 13px 0;
+    }
+  </style>
+  <!--[if mso]>
+    <noscript>
+    <xml>
+    <o:OfficeDocumentSettings>
+      <o:AllowPNG/>
+      <o:PixelsPerInch>96</o:PixelsPerInch>
+    </o:OfficeDocumentSettings>
+    </xml>
+    </noscript>
+    <![endif]-->
+  <!--[if lte mso 11]>
+    <style type="text/css">
+      .mj-outlook-group-fix { width:100% !important; }
+    </style>
+    <![endif]-->
+  <!--[if !mso]><!-->
+  <link href="https://fonts.googleapis.com/css?family=Ubuntu:300,400,500,700" rel="stylesheet" type="text/css">
+  <style type="text/css">
+    @import url(https://fonts.googleapis.com/css?family=Ubuntu:300,400,500,700);
+  </style>
+  <!--<![endif]-->
+  <style type="text/css">
+    @media only screen and (min-width:480px) {
+      .mj-column-per-100 {
+        width: 100% !important;
+        max-width: 100%;
+      }
+    }
+  </style>
+  <style media="screen and (min-width:480px)">
+    .moz-text-html .mj-column-per-100 {
+      width: 100% !important;
+      max-width: 100%;
+    }
+  </style>
+  <style type="text/css">
+  </style>
+  <style type="text/css">
+  </style>
+</head>
+
+<body style="word-spacing:normal;background-color:#E1E8ED;">
+  <div style="display:none;font-size:1px;color:#ffffff;line-height:1px;max-height:0px;max-width:0px;opacity:0;overflow:hidden;"> New week, new gains! But first time to log last week's workouts before we send out the leaderboard this afternoon! </div>
+  <div style="background-color:#E1E8ED;">
+    <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:600px;" width="600" ><tr><td style="line-height:0;font-size:0;mso-line-height-rule:exactly;"><v:image style="border:0;mso-position-horizontal:center;position:absolute;top:0;width:600px;z-index:-3;" src="{{ MAIN_HOST }}/running_email.jpg" xmlns:v="urn:schemas-microsoft-com:vml" /><![endif]-->
+    <div style="margin:0 auto;max-width:600px;">
+      <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;">
+        <tbody>
+          <tr style="vertical-align:top;">
+            <td background="{{ MAIN_HOST }}/running_email.jpg" style="background:#075985 url('{{ MAIN_HOST }}/running_email.jpg') no-repeat center center / cover;background-position:center center;background-repeat:no-repeat;padding:0px;vertical-align:top;" height="200">
+              <!--[if mso | IE]><table border="0" cellpadding="0" cellspacing="0" style="width:600px;" width="600" ><tr><td style=""><![endif]-->
+              <div class="mj-hero-content" style="margin:0px auto;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;margin:0px;">
+                  <tbody>
+                    <tr>
+                      <td style="">
+                        <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;margin:0px;">
+                          <tbody>
+                            <tr>
+                              <td align="center" class="no-invert" style="font-size:0px;padding:10px 25px;padding-top:45px;padding-bottom:10px;word-break:break-word;">
+                                <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:30px;line-height:1.2;text-align:center;color:#ffffff;">Workout Challenge</div>
+                              </td>
+                            </tr>
+                            <tr>
+                              <td align="center" style="font-size:0px;padding:10px 25px;word-break:break-word;">
+                                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="border-collapse:separate;line-height:100%;">
+                                  <tbody>
+                                    <tr>
+                                      <td align="center" bgcolor="#075985" role="presentation" style="border:1px solid #fff;border-radius:24px;cursor:auto;mso-padding-alt:10px 25px;background:#075985;" valign="middle">
+                                        <a href="{{ MAIN_HOST }}/login" style="display:inline-block;background:#075985;color:#ffffff;font-family:Helvetica, Arial, sans-serif;font-size:13px;font-weight:normal;line-height:120%;margin:0;text-decoration:none;text-transform:none;padding:10px 25px;mso-padding-alt:0px;border-radius:24px;" target="_blank"> LOGIN </a>
+                                      </td>
+                                    </tr>
+                                  </tbody>
+                                </table>
+                              </td>
+                            </tr>
+                          </tbody>
+                        </table>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td></tr></table><![endif]-->
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--[if mso | IE]></td></tr></table><table align="center" border="0" cellpadding="0" cellspacing="0" class="" role="presentation" style="width:600px;" width="600" bgcolor="white" ><tr><td style="line-height:0px;font-size:0px;mso-line-height-rule:exactly;"><![endif]-->
+    <div style="background:white;background-color:white;margin:0px auto;max-width:600px;">
+      <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="background:white;background-color:white;width:100%;">
+        <tbody>
+          <tr>
+            <td style="direction:ltr;font-size:0px;padding:20px 0;padding-bottom:0px;padding-top:0px;text-align:center;">
+              <!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" cellspacing="0"><tr><td class="" style="vertical-align:top;width:600px;" ><![endif]-->
+              <div class="mj-column-per-100 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:top;width:100%;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" width="100%">
+                  <tbody>
+                    <tr>
+                      <td style="vertical-align:top;padding-bottom:0px;">
+                        <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="" width="100%">
+                          <tbody>
+                            <tr>
+                              <td align="left" style="font-size:0px;padding:10px 25px;padding-bottom:0px;word-break:break-word;">
+                                <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;">
+                                  <p>Hi {{ first_name }},</p>
+                                  <p>New week, new gains!</p>
+                                  <mj-raw> {% if link_strava_note %} </mj-raw>
+                                  <p>But first, time to <b>log last week's workouts & steps</b> before we send out the leaderboard this afternoon!</p>
+                                  <mj-raw> {% else %} </mj-raw>
+                                  <p>But first, time to <b>log last week's steps</b> as Strava does not automatically import steps. Your workouts should have been imported already. We will send out the leaderboard this afternoon!</p>
+                                  <mj-raw> {% endif %} </mj-raw>
+                                </div>
+                              </td>
+                            </tr>
+                            <tr>
+                              <td align="center" style="font-size:0px;padding:10px 25px;word-break:break-word;">
+                                <p style="border-top:solid 2px #E1E8ED;font-size:1px;margin:0px auto;width:100%;">
+                                </p>
+                                <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" style="border-top:solid 2px #E1E8ED;font-size:1px;margin:0px auto;width:550px;" role="presentation" width="550px" ><tr><td style="height:0;line-height:0;"> &nbsp;
+</td></tr></table><![endif]-->
+                              </td>
+                            </tr>
+                            <tr>
+                              <td align="left" style="font-size:0px;padding:10px 25px;padding-bottom:0px;word-break:break-word;">
+                                <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;">
+                                  <h3>Your last workouts:</h3>
+                                </div>
+                              </td>
+                            </tr>
+                          </tbody>
+                        </table>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td></tr></table><![endif]-->
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--[if mso | IE]></td></tr></table><![endif]-->
+    <!-- This week leaderbaord section -->
+    <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" class="" role="presentation" style="width:600px;" width="600" bgcolor="white" ><tr><td style="line-height:0px;font-size:0px;mso-line-height-rule:exactly;"><![endif]-->
+    <div style="background:white;background-color:white;margin:0px auto;max-width:600px;">
+      <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="background:white;background-color:white;width:100%;">
+        <tbody>
+          <tr>
+            <td style="direction:ltr;font-size:0px;padding:20px 0;padding-bottom:0px;padding-top:0px;text-align:center;">
+              <!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" cellspacing="0"><tr><td class="" style="vertical-align:top;width:600px;" ><![endif]-->
+              <div class="mj-column-per-100 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:top;width:100%;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="vertical-align:top;" width="100%">
+                  <tbody>
+                    <tr>
+                      <td align="left" style="font-size:0px;padding:10px 25px;word-break:break-word;">
+                        <table cellpadding="0" cellspacing="0" width="100%" border="0" style="color:#000000;font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:22px;table-layout:auto;width:100%;border:none;">
+                          <tr style="border-top:1px solid #ecedee;border-bottom:1px solid #ecedee;text-align:left;padding:15px 0;">
+                            <th style="padding: 0 15px 0 0;">Time</th>
+                            <th style="padding: 0 15px;">Workout</th>
+                          </tr>
+                          <mj-raw> {% for item in last_workouts %} </mj-raw>
+                          <tr style="border-top:1px solid #ecedee;border-bottom:1px solid #ecedee;text-align:left;padding:15px 0;">
+                            <td style="padding: 0 15px 0 0;">{{ item.start_datetime|date:"D, M j H:i" }}</td>
+                            <td style="padding: 0 15px;">{% if item.sport_type == "Steps" %}{{ item.steps }}{% else %}{{ item.duration }}{% endif %} <b>{{ item.sport_type }}</b></td>
+                          </tr>
+                          <mj-raw> {% endfor %} </mj-raw>
+                        </table>
+                      </td>
+                    </tr> {% if link_strava_note %} <tr>
+                      <td align="center" vertical-align="middle" style="font-size:0px;padding:10px 25px;padding-top:7px;padding-bottom:17px;word-break:break-word;">
+                        <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="border-collapse:separate;line-height:100%;">
+                          <tbody>
+                            <tr>
+                              <td align="center" bgcolor="#075985" role="presentation" style="border:none;border-radius:24px;cursor:auto;mso-padding-alt:10px 25px;background:#075985;" valign="middle">
+                                <a href="{{ MAIN_HOST }}/dashboard" style="display:inline-block;background:#075985;color:#ffffff;font-family:Helvetica, Arial, sans-serif, Helvetica, Arial, sans-serif;font-size:13px;font-weight:normal;line-height:120%;margin:0;text-decoration:none;text-transform:none;padding:10px 25px;mso-padding-alt:0px;border-radius:24px;" target="_blank"> Log Workouts & Steps </a>
+                              </td>
+                            </tr>
+                          </tbody>
+                        </table>
+                      </td>
+                    </tr> {% else %} <tr>
+                      <td align="center" vertical-align="middle" style="font-size:0px;padding:10px 25px;padding-top:7px;padding-bottom:17px;word-break:break-word;">
+                        <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="border-collapse:separate;line-height:100%;">
+                          <tbody>
+                            <tr>
+                              <td align="center" bgcolor="#075985" role="presentation" style="border:none;border-radius:24px;cursor:auto;mso-padding-alt:10px 25px;background:#075985;" valign="middle">
+                                <a href="{{ MAIN_HOST }}/dashboard" style="display:inline-block;background:#075985;color:#ffffff;font-family:Helvetica, Arial, sans-serif, Helvetica, Arial, sans-serif;font-size:13px;font-weight:normal;line-height:120%;margin:0;text-decoration:none;text-transform:none;padding:10px 25px;mso-padding-alt:0px;border-radius:24px;" target="_blank"> Log Steps </a>
+                              </td>
+                            </tr>
+                          </tbody>
+                        </table>
+                      </td>
+                    </tr> {% endif %}
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td></tr></table><![endif]-->
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--[if mso | IE]></td></tr></table><![endif]-->
+    <!-- Link Strava -->{% if link_strava_note %}
+    <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" class="" role="presentation" style="width:600px;" width="600" bgcolor="#075985" ><tr><td style="line-height:0px;font-size:0px;mso-line-height-rule:exactly;"><![endif]-->
+    <div style="background:#075985;background-color:#075985;margin:0px auto;max-width:600px;">
+      <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="background:#075985;background-color:#075985;width:100%;">
+        <tbody>
+          <tr>
+            <td style="direction:ltr;font-size:0px;padding:20px 0;text-align:center;">
+              <!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" cellspacing="0"><tr><td class="" style="vertical-align:middle;width:600px;" ><![endif]-->
+              <div class="mj-column-per-100 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:middle;width:100%;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="vertical-align:middle;" width="100%">
+                  <tbody>
+                    <tr>
+                      <td align="center" style="font-size:0px;padding:10px 25px;padding-top:20px;padding-bottom:10px;word-break:break-word;">
+                        <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:18px;line-height:1.2;text-align:center;color:#ffffff;">Skip the hassle of manual logging – connect Strava for automatic workout imports!</div>
+                      </td>
+                    </tr>
+                    <tr>
+                      <td align="center" style="font-size:0px;padding:10px 25px;padding-right:100px;padding-bottom:20px;padding-left:100px;word-break:break-word;">
+                        <p style="border-top:solid 1px #ffffff;font-size:1px;margin:0px auto;width:100%;">
+                        </p>
+                        <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" style="border-top:solid 1px #ffffff;font-size:1px;margin:0px auto;width:400px;" role="presentation" width="400px" ><tr><td style="height:0;line-height:0;"> &nbsp;
+</td></tr></table><![endif]-->
+                      </td>
+                    </tr>
+                    <tr>
+                      <td align="center" style="font-size:0px;padding:10px 25px;padding-top:0px;padding-bottom:25px;word-break:break-word;">
+                        <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:11px;line-height:1.2;text-align:center;color:#e5e7eb;">
+                          <p>Every day at 4 AM, your workouts are automatically imported, only syncing the most essential data with Strava to respect your privacy:</p>
+                          <span>• Sport type</span><br />
+                          <span>• Start time & duration</span><br />
+                          <span>• Workout id</span><br />
+                          <span>• Distance, kcal, kj, avg. watt</span>
+                        </div>
+                      </td>
+                    </tr>
+                    <tr>
+                      <td align="center" vertical-align="middle" style="font-size:0px;padding:10px 25px;padding-top:0px;padding-bottom:5px;word-break:break-word;">
+                        <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="border-collapse:separate;line-height:100%;">
+                          <tbody>
+                            <tr>
+                              <td align="center" bgcolor="#ffffff" role="presentation" style="border:none;border-radius:24px;cursor:auto;mso-padding-alt:10px 25px;background:#ffffff;" valign="middle">
+                                <a href="{{ MAIN_HOST }}/strava/link" style="display:inline-block;background:#ffffff;color:#075985;font-family:Helvetica, Arial, sans-serif, Helvetica, Arial, sans-serif;font-size:13px;font-weight:normal;line-height:120%;margin:0;text-decoration:none;text-transform:none;padding:10px 25px;mso-padding-alt:0px;border-radius:24px;" target="_blank"> Link Strava </a>
+                              </td>
+                            </tr>
+                          </tbody>
+                        </table>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td></tr></table><![endif]-->
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--[if mso | IE]></td></tr></table><![endif]--> {% endif %}
+    <!-- Final remarks -->
+    <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" class="" role="presentation" style="width:600px;" width="600" bgcolor="white" ><tr><td style="line-height:0px;font-size:0px;mso-line-height-rule:exactly;"><![endif]-->
+    <div style="background:white;background-color:white;margin:0px auto;max-width:600px;">
+      <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="background:white;background-color:white;width:100%;">
+        <tbody>
+          <tr>
+            <td style="direction:ltr;font-size:0px;padding:20px 0;padding-bottom:0px;padding-top:0px;text-align:center;">
+              <!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" cellspacing="0"><tr><td class="" style="vertical-align:top;width:600px;" ><![endif]-->
+              <div class="mj-column-per-100 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:top;width:100%;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="vertical-align:top;" width="100%">
+                  <tbody>
+                    <tr>
+                      <td align="left" style="font-size:0px;padding:10px 25px;padding-top:5px;padding-bottom:10px;word-break:break-word;">
+                        <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;">
+                          <p>Enjoy the Competition.</p>
+                          <p>Good luck!</p>
+                        </div>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td></tr></table><![endif]-->
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--[if mso | IE]></td></tr></table><![endif]-->
+    <!-- Footnote -->
+    <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;">
+      <tbody>
+        <tr>
+          <td>
+            <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" class="" role="presentation" style="width:600px;" width="600" ><tr><td style="line-height:0px;font-size:0px;mso-line-height-rule:exactly;"><![endif]-->
+            <div style="margin:0px auto;max-width:600px;">
+              <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;">
+                <tbody>
+                  <tr>
+                    <td style="direction:ltr;font-size:0px;padding:20px 0;text-align:center;">
+                      <!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" cellspacing="0"><tr><td class="" style="vertical-align:middle;width:600px;" ><![endif]-->
+                      <div class="mj-column-per-100 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:middle;width:100%;">
+                        <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="vertical-align:middle;" width="100%">
+                          <tbody>
+                            <tr>
+                              <td align="center" style="font-size:0px;padding:10px 25px;padding-top:0;padding-bottom:0px;word-break:break-word;">
+                                <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:11px;line-height:1.2;text-align:center;color:#9a9ea6;"><span class="apple-link">Workout Challenge</span>
+                                  <br /> Any issues? <a href="mailto:{{ EMAIL_REPLY_TO }}">Send us an Email</a>. <br /> See the <a href="https://github.com/vanalmsick/workout_challenge">Source Code</a>.
+                                </div>
+                              </td>
+                            </tr>
+                          </tbody>
+                        </table>
+                      </div>
+                      <!--[if mso | IE]></td></tr></table><![endif]-->
+                    </td>
+                  </tr>
+                </tbody>
+              </table>
+            </div>
+            <!--[if mso | IE]></td></tr></table><![endif]-->
+          </td>
+        </tr>
+      </tbody>
+    </table>
+  </div>
+</body>
+
+</html>

src-backend/custom_user/templates/email_log_workouts.mjml

@@ -0,0 +1,99 @@
+<mjml>
+  <!-- Written with https://mjml.io/ -->
+  <mj-head>
+    <mj-preview>New week, new gains! But first time to log last week's workouts before we send out the leaderboard this afternoon!</mj-preview>
+    <mj-attributes>
+      <mj-text line-height="1.2" />
+    </mj-attributes>
+  </mj-head>
+  <mj-body background-color="#E1E8ED">
+    <mj-hero mode="fixed-height" height="200px" background-url="{{ MAIN_HOST }}/running_email.jpg" background-size="cover" background-repeat="no-repeat" background-color="#075985">
+      <mj-text align="center" font-size="30px" color="#ffffff" padding-bottom="10px" padding-top="45px" css-class="no-invert">
+        Workout Challenge
+      </mj-text>
+      <mj-button background-color="#075985" color="#fff" border-radius="24px" border="1px solid #fff" href="{{ MAIN_HOST }}/login" font-family="Helvetica, Arial, sans-serif" padding="10px 25px">
+        LOGIN
+      </mj-button>
+    </mj-hero>
+    <mj-section padding-top="0px" padding-bottom="0px" background-color="white">
+      <mj-column padding-bottom="0px">
+        <mj-text padding-bottom="0px">
+          <p>Hi {{ first_name }},</p>
+          <p>New week, new gains!</p>
+          <mj-raw> {% if link_strava_note %} </mj-raw>
+            <p>But first, time to <b>log last week's workouts & steps</b> before we send out the leaderboard this afternoon!</p>
+          <mj-raw> {% else %} </mj-raw>
+            <p>But first, time to <b>log last week's steps</b> as Strava does not automatically import steps. Your workouts should have been imported already. We will send out the leaderboard this afternoon!</p>
+          <mj-raw> {% endif %} </mj-raw>
+        </mj-text>
+        <mj-divider border-color="#E1E8ED" border-width="2px"></mj-divider>
+        <mj-text padding-bottom="0px">
+          <h3>Your last workouts:</h3>
+        </mj-text>
+      </mj-column>
+    </mj-section>
+    
+    <!-- This week leaderbaord section -->
+    <mj-section padding-top="0px" padding-bottom="0px" background-color="white">
+      <mj-column>
+        <mj-table>
+          <tr style="border-top:1px solid #ecedee;border-bottom:1px solid #ecedee;text-align:left;padding:15px 0;">
+            <th style="padding: 0 15px 0 0;">Time</th>
+            <th style="padding: 0 15px;">Workout</th>
+          </tr>
+          <mj-raw> {% for item in last_workouts %} </mj-raw>
+          <tr style="border-top:1px solid #ecedee;border-bottom:1px solid #ecedee;text-align:left;padding:15px 0;">
+            <td style="padding: 0 15px 0 0;">{{ item.start_datetime|date:"D, M j H:i" }}</td>
+            <td style="padding: 0 15px;">{% if item.sport_type == "Steps" %}{{ item.steps }}{% else %}{{ item.duration }}{% endif %} <b>{{ item.sport_type }}</b></td>
+          </tr>
+          <mj-raw> {% endfor %} </mj-raw>
+        </mj-table>
+        <mj-raw> {% if link_strava_note %} </mj-raw>
+          <mj-button align="center" background-color="#075985" color="#fff" border-radius="24px" href="{{ MAIN_HOST }}/dashboard" font-family="Helvetica, Arial, sans-serif, Helvetica, Arial, sans-serif" padding-bottom="17px" padding-top="7px">Log Workouts & Steps</mj-button>
+        <mj-raw> {% else %} </mj-raw>
+          <mj-button align="center" background-color="#075985" color="#fff" border-radius="24px" href="{{ MAIN_HOST }}/dashboard" font-family="Helvetica, Arial, sans-serif, Helvetica, Arial, sans-serif" padding-bottom="17px" padding-top="7px">Log Steps</mj-button>
+        <mj-raw> {% endif %} </mj-raw>
+      </mj-column> 
+    </mj-section>
+    
+    <!-- Link Strava -->
+    <mj-raw> {% if link_strava_note %} </mj-raw>
+    <mj-section background-color="#075985" vertical-align="middle">
+      <mj-column width="100%" vertical-align="middle">
+        <mj-text align="center" color="#ffffff" font-size="18px" padding-bottom="10px" padding-top="20px">Skip the hassle of manual logging – connect Strava for automatic workout imports!</mj-text>
+        <mj-divider border-color="#fff" border-style="solid" border-width="1px" padding-left="100px" padding-right="100px" padding-bottom="20px"></mj-divider>
+        <mj-text align="center" color="#e5e7eb" font-size="11px" padding-bottom="25px" padding-top="0px">
+        	<p>Every day at 4 AM, your workouts are automatically imported, only syncing the most essential data with Strava to respect your privacy:</p>
+          <span>• Sport type</span><br/>
+          <span>• Start time & duration</span><br/>
+          <span>• Workout id</span><br/>
+          <span>• Distance, kcal, kj, avg. watt</span>
+        </mj-text>
+        <mj-button align="center" background-color="#ffffff" color="#075985" border-radius="24px" href="{{ MAIN_HOST }}/strava/link" font-family="Helvetica, Arial, sans-serif, Helvetica, Arial, sans-serif" padding-bottom="5px" padding-top="0px">Link Strava</mj-button>
+      </mj-column>
+    </mj-section>
+    <mj-raw> {% endif %} </mj-raw>
+    
+    <!-- Final remarks -->
+    <mj-section padding-top="0px" padding-bottom="0px" background-color="white">
+      <mj-column>       
+        <mj-text padding-bottom="10px" padding-top="5px">
+          <p>Enjoy the Competition.</p>
+          <p>Good luck!</p>
+        </mj-text>
+      </mj-column>
+    </mj-section>
+    
+    <!-- Footnote -->
+    </mj-section>
+    <mj-section full-width="full-width">
+      <mj-column width="100%" vertical-align="middle">
+        <mj-text align="center" color="#9a9ea6" font-size="11px" padding-bottom="0px" padding-top="0">
+          <span class="apple-link">Workout Challenge</span>
+          <br/> Any issues? <a href="mailto:{{ EMAIL_REPLY_TO }}">Send us an Email</a>. <br/> See the <a href="https://github.com/vanalmsick/workout_challenge">Source Code</a>.
+        </mj-text>
+      </mj-column>
+    </mj-section>
+        
+  </mj-body>
+</mjml>

src-backend/custom_user/templates/email_password_reset.html

@@ -0,0 +1,220 @@
+<!doctype html>
+<html xmlns="http://www.w3.org/1999/xhtml" xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office">
+
+<head>
+  <title>
+  </title>
+  <!--[if !mso]><!-->
+  <meta http-equiv="X-UA-Compatible" content="IE=edge">
+  <!--<![endif]-->
+  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <style type="text/css">
+    #outlook a {
+      padding: 0;
+    }
+
+    body {
+      margin: 0;
+      padding: 0;
+      -webkit-text-size-adjust: 100%;
+      -ms-text-size-adjust: 100%;
+    }
+
+    table,
+    td {
+      border-collapse: collapse;
+      mso-table-lspace: 0pt;
+      mso-table-rspace: 0pt;
+    }
+
+    img {
+      border: 0;
+      height: auto;
+      line-height: 100%;
+      outline: none;
+      text-decoration: none;
+      -ms-interpolation-mode: bicubic;
+    }
+
+    p {
+      display: block;
+      margin: 13px 0;
+    }
+  </style>
+  <!--[if mso]>
+    <noscript>
+    <xml>
+    <o:OfficeDocumentSettings>
+      <o:AllowPNG/>
+      <o:PixelsPerInch>96</o:PixelsPerInch>
+    </o:OfficeDocumentSettings>
+    </xml>
+    </noscript>
+    <![endif]-->
+  <!--[if lte mso 11]>
+    <style type="text/css">
+      .mj-outlook-group-fix { width:100% !important; }
+    </style>
+    <![endif]-->
+  <!--[if !mso]><!-->
+  <link href="https://fonts.googleapis.com/css?family=Ubuntu:300,400,500,700" rel="stylesheet" type="text/css">
+  <style type="text/css">
+    @import url(https://fonts.googleapis.com/css?family=Ubuntu:300,400,500,700);
+  </style>
+  <!--<![endif]-->
+  <style type="text/css">
+    @media only screen and (min-width:480px) {
+      .mj-column-per-100 {
+        width: 100% !important;
+        max-width: 100%;
+      }
+    }
+  </style>
+  <style media="screen and (min-width:480px)">
+    .moz-text-html .mj-column-per-100 {
+      width: 100% !important;
+      max-width: 100%;
+    }
+  </style>
+  <style type="text/css">
+  </style>
+  <style type="text/css">
+  </style>
+</head>
+
+<body style="word-spacing:normal;background-color:#E1E8ED;">
+  <div style="display:none;font-size:1px;color:#ffffff;line-height:1px;max-height:0px;max-width:0px;opacity:0;overflow:hidden;"> We received a request to reset your password. Click the link below or copy and paste it into your browser to reset your password (valid for 10 minutes). </div>
+  <div style="background-color:#E1E8ED;">
+    <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:600px;" width="600" ><tr><td style="line-height:0;font-size:0;mso-line-height-rule:exactly;"><v:image style="border:0;mso-position-horizontal:center;position:absolute;top:0;width:600px;z-index:-3;" src="{{ MAIN_HOST }}/running_email.jpg" xmlns:v="urn:schemas-microsoft-com:vml" /><![endif]-->
+    <div style="margin:0 auto;max-width:600px;">
+      <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;">
+        <tbody>
+          <tr style="vertical-align:top;">
+            <td background="{{ MAIN_HOST }}/running_email.jpg" style="background:#075985 url('{{ MAIN_HOST }}/running_email.jpg') no-repeat center center / cover;background-position:center center;background-repeat:no-repeat;padding:0px;vertical-align:top;" height="150">
+              <!--[if mso | IE]><table border="0" cellpadding="0" cellspacing="0" style="width:600px;" width="600" ><tr><td style=""><![endif]-->
+              <div class="mj-hero-content" style="margin:0px auto;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;margin:0px;">
+                  <tbody>
+                    <tr>
+                      <td style="">
+                        <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;margin:0px;">
+                          <tbody>
+                            <tr>
+                              <td align="center" class="no-invert" style="font-size:0px;padding:10px 25px;padding-top:65px;padding-bottom:65px;word-break:break-word;">
+                                <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:30px;line-height:1.2;text-align:center;color:#ffffff;">Workout Challenge</div>
+                              </td>
+                            </tr>
+                          </tbody>
+                        </table>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td></tr></table><![endif]-->
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--[if mso | IE]></td></tr></table><table align="center" border="0" cellpadding="0" cellspacing="0" class="" role="presentation" style="width:600px;" width="600" bgcolor="white" ><tr><td style="line-height:0px;font-size:0px;mso-line-height-rule:exactly;"><![endif]-->
+    <div style="background:white;background-color:white;margin:0px auto;max-width:600px;">
+      <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="background:white;background-color:white;width:100%;">
+        <tbody>
+          <tr>
+            <td style="direction:ltr;font-size:0px;padding:20px 0;padding-bottom:0px;padding-top:0px;text-align:center;">
+              <!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" cellspacing="0"><tr><td class="" style="vertical-align:top;width:600px;" ><![endif]-->
+              <div class="mj-column-per-100 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:top;width:100%;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" width="100%">
+                  <tbody>
+                    <tr>
+                      <td style="vertical-align:top;padding-bottom:0px;">
+                        <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="" width="100%">
+                          <tbody>
+                            <tr>
+                              <td align="left" style="font-size:0px;padding:10px 25px;padding-bottom:0px;word-break:break-word;">
+                                <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;">
+                                  <p>Hi {{ first_name }},</p>
+                                  <p>We received a request to reset your password.</p>
+                                  <p>Click the link below or copy and paste it into your browser to reset your password (valid for 10 minutes):</p>
+                                </div>
+                              </td>
+                            </tr>
+                            <tr>
+                              <td align="center" vertical-align="middle" style="font-size:0px;padding:10px 25px;padding-top:10px;padding-bottom:0px;word-break:break-word;">
+                                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="border-collapse:separate;line-height:100%;">
+                                  <tbody>
+                                    <tr>
+                                      <td align="center" bgcolor="#075985" role="presentation" style="border:none;border-radius:24px;cursor:auto;mso-padding-alt:10px 25px;background:#075985;" valign="middle">
+                                        <a href="{{ RESET_URL }}" style="display:inline-block;background:#075985;color:#ffffff;font-family:Helvetica, Arial, sans-serif, Helvetica, Arial, sans-serif;font-size:13px;font-weight:normal;line-height:120%;margin:0;text-decoration:none;text-transform:none;padding:10px 25px;mso-padding-alt:0px;border-radius:24px;" target="_blank"> Reset Password </a>
+                                      </td>
+                                    </tr>
+                                  </tbody>
+                                </table>
+                              </td>
+                            </tr>
+                            <tr>
+                              <td align="left" style="font-size:0px;padding:10px 25px;padding-top:0px;padding-bottom:15px;word-break:break-word;">
+                                <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;">
+                                  <p align="center"><a href="{{ RESET_URL }}">{{ RESET_URL }}</a></p>
+                                  <p>If you didn’t request this, you can safely ignore this email.</p>
+                                  <p>Enjoy the Competition.</p>
+                                  <p>Good luck!</p>
+                                </div>
+                              </td>
+                            </tr>
+                          </tbody>
+                        </table>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td></tr></table><![endif]-->
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--[if mso | IE]></td></tr></table><![endif]-->
+    <!-- Footnote -->
+    <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;">
+      <tbody>
+        <tr>
+          <td>
+            <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" class="" role="presentation" style="width:600px;" width="600" ><tr><td style="line-height:0px;font-size:0px;mso-line-height-rule:exactly;"><![endif]-->
+            <div style="margin:0px auto;max-width:600px;">
+              <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;">
+                <tbody>
+                  <tr>
+                    <td style="direction:ltr;font-size:0px;padding:20px 0;text-align:center;">
+                      <!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" cellspacing="0"><tr><td class="" style="vertical-align:middle;width:600px;" ><![endif]-->
+                      <div class="mj-column-per-100 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:middle;width:100%;">
+                        <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="vertical-align:middle;" width="100%">
+                          <tbody>
+                            <tr>
+                              <td align="center" style="font-size:0px;padding:10px 25px;padding-top:0;padding-bottom:0px;word-break:break-word;">
+                                <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:11px;line-height:1.2;text-align:center;color:#9a9ea6;"><span class="apple-link">Workout Challenge</span>
+                                  <br> Any issues? <a href="mailto:{{ EMAIL_REPLY_TO }}">Send us an Email</a>. <br> See the <a href="https://github.com/vanalmsick/workout_challenge">Source Code</a>.
+                                </div>
+                              </td>
+                            </tr>
+                          </tbody>
+                        </table>
+                      </div>
+                      <!--[if mso | IE]></td></tr></table><![endif]-->
+                    </td>
+                  </tr>
+                </tbody>
+              </table>
+            </div>
+            <!--[if mso | IE]></td></tr></table><![endif]-->
+          </td>
+        </tr>
+      </tbody>
+    </table>
+  </div>
+</body>
+
+</html>

src-backend/custom_user/templates/email_password_reset.mjml

@@ -0,0 +1,44 @@
+<mjml>
+  <!-- Written with https://mjml.io/ -->
+  <mj-head>
+    <mj-preview>We received a request to reset your password. Click the link below or copy and paste it into your browser to reset your password (valid for 10 minutes).</mj-preview>
+    <mj-attributes>
+      <mj-text line-height="1.2" />
+    </mj-attributes>
+  </mj-head>
+  <mj-body background-color="#E1E8ED">
+    <mj-hero mode="fixed-height" height="150px" background-url="{{ MAIN_HOST }}/running_email.jpg" background-size="cover" background-repeat="no-repeat" background-color="#075985">
+      <mj-text align="center" font-size="30px" color="#ffffff" padding-bottom="65px" padding-top="65px" css-class="no-invert">
+        Workout Challenge
+      </mj-text>
+    </mj-hero>
+    <mj-section padding-top="0px" padding-bottom="0px" background-color="white">
+      <mj-column padding-bottom="0px">
+        <mj-text padding-bottom="0px">
+          <p>Hi {{ first_name }},</p>
+          <p>We received a request to reset your password.</p>
+          <p>Click the link below or copy and paste it into your browser to reset your password (valid for 10 minutes):</p>
+        </mj-text>
+        <mj-button align="center" background-color="#075985" color="#fff" border-radius="24px" href="{{ RESET_URL }}" font-family="Helvetica, Arial, sans-serif, Helvetica, Arial, sans-serif" padding-bottom="0px" padding-top="10px">Reset Password</mj-button>
+        <mj-text padding-top="0px" padding-bottom="15px">
+          <p align="center"><a href="{{ RESET_URL }}">{{ RESET_URL }}</a></p>
+          <p>If you didn’t request this, you can safely ignore this email.</p>
+          <p>Enjoy the Competition.</p>
+          <p>Good luck!</p>
+        </mj-text>
+      </mj-column>
+    </mj-section>
+    
+    <!-- Footnote -->
+    </mj-section>
+    <mj-section full-width="full-width">
+      <mj-column width="100%" vertical-align="middle">
+        <mj-text align="center" color="#9a9ea6" font-size="11px" padding-bottom="0px" padding-top="0">
+          <span class="apple-link">Workout Challenge</span>
+          <br> Any issues? <a href="mailto:{{ EMAIL_REPLY_TO }}">Send us an Email</a>. <br> See the <a href="https://github.com/vanalmsick/workout_challenge">Source Code</a>.
+        </mj-text>
+      </mj-column>
+    </mj-section>
+        
+  </mj-body>
+</mjml>

src-backend/custom_user/templates/email_weekly.html

@@ -0,0 +1,518 @@
+<!doctype html>
+<html xmlns="http://www.w3.org/1999/xhtml" xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office">
+
+<head>
+  <title>
+  </title>
+  <!--[if !mso]><!-->
+  <meta http-equiv="X-UA-Compatible" content="IE=edge">
+  <!--<![endif]-->
+  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <style type="text/css">
+    #outlook a {
+      padding: 0;
+    }
+
+    body {
+      margin: 0;
+      padding: 0;
+      -webkit-text-size-adjust: 100%;
+      -ms-text-size-adjust: 100%;
+    }
+
+    table,
+    td {
+      border-collapse: collapse;
+      mso-table-lspace: 0pt;
+      mso-table-rspace: 0pt;
+    }
+
+    img {
+      border: 0;
+      height: auto;
+      line-height: 100%;
+      outline: none;
+      text-decoration: none;
+      -ms-interpolation-mode: bicubic;
+    }
+
+    p {
+      display: block;
+      margin: 13px 0;
+    }
+  </style>
+  <!--[if mso]>
+    <noscript>
+    <xml>
+    <o:OfficeDocumentSettings>
+      <o:AllowPNG/>
+      <o:PixelsPerInch>96</o:PixelsPerInch>
+    </o:OfficeDocumentSettings>
+    </xml>
+    </noscript>
+    <![endif]-->
+  <!--[if lte mso 11]>
+    <style type="text/css">
+      .mj-outlook-group-fix { width:100% !important; }
+    </style>
+    <![endif]-->
+  <!--[if !mso]><!-->
+  <link href="https://fonts.googleapis.com/css?family=Ubuntu:300,400,500,700" rel="stylesheet" type="text/css">
+  <style type="text/css">
+    @import url(https://fonts.googleapis.com/css?family=Ubuntu:300,400,500,700);
+  </style>
+  <!--<![endif]-->
+  <style type="text/css">
+    @media only screen and (min-width:480px) {
+      .mj-column-per-100 {
+        width: 100% !important;
+        max-width: 100%;
+      }
+
+      .mj-column-per-50 {
+        width: 50% !important;
+        max-width: 50%;
+      }
+    }
+  </style>
+  <style media="screen and (min-width:480px)">
+    .moz-text-html .mj-column-per-100 {
+      width: 100% !important;
+      max-width: 100%;
+    }
+
+    .moz-text-html .mj-column-per-50 {
+      width: 50% !important;
+      max-width: 50%;
+    }
+  </style>
+  <style type="text/css">
+  </style>
+  <style type="text/css">
+  </style>
+</head>
+
+<body style="word-spacing:normal;background-color:#E1E8ED;">
+  <div style="display:none;font-size:1px;color:#ffffff;line-height:1px;max-height:0px;max-width:0px;opacity:0;overflow:hidden;"> Keep the momentum going – keep the streak alive! Aim for 150-300 minutes of moderate or 75-150 minutes of vigorous activity weekly (or an equivalent mix) spread over at least 2 days, as recommended by the WHO. </div>
+  <div style="background-color:#E1E8ED;">
+    <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:600px;" width="600" ><tr><td style="line-height:0;font-size:0;mso-line-height-rule:exactly;"><v:image style="border:0;mso-position-horizontal:center;position:absolute;top:0;width:600px;z-index:-3;" src="{{ MAIN_HOST }}/running_email.jpg" xmlns:v="urn:schemas-microsoft-com:vml" /><![endif]-->
+    <div style="margin:0 auto;max-width:600px;">
+      <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;">
+        <tbody>
+          <tr style="vertical-align:top;">
+            <td background="{{ MAIN_HOST }}/running_email.jpg" style="background:#075985 url('{{ MAIN_HOST }}/running_email.jpg') no-repeat center center / cover;background-position:center center;background-repeat:no-repeat;padding:0px;vertical-align:top;" height="200">
+              <!--[if mso | IE]><table border="0" cellpadding="0" cellspacing="0" style="width:600px;" width="600" ><tr><td style=""><![endif]-->
+              <div class="mj-hero-content" style="margin:0px auto;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;margin:0px;">
+                  <tbody>
+                    <tr>
+                      <td style>
+                        <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;margin:0px;">
+                          <tbody>
+                            <tr>
+                              <td align="center" class="no-invert" style="font-size:0px;padding:10px 25px;padding-top:45px;padding-bottom:10px;word-break:break-word;">
+                                <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:30px;line-height:1.2;text-align:center;color:#ffffff;">Workout Challenge</div>
+                              </td>
+                            </tr>
+                            <tr>
+                              <td align="center" style="font-size:0px;padding:10px 25px;word-break:break-word;">
+                                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="border-collapse:separate;line-height:100%;">
+                                  <tbody>
+                                    <tr>
+                                      <td align="center" bgcolor="#075985" role="presentation" style="border:1px solid #fff;border-radius:24px;cursor:auto;mso-padding-alt:10px 25px;background:#075985;" valign="middle">
+                                        <a href="{{ MAIN_HOST }}/login" style="display:inline-block;background:#075985;color:#ffffff;font-family:Helvetica, Arial, sans-serif;font-size:13px;font-weight:normal;line-height:120%;margin:0;text-decoration:none;text-transform:none;padding:10px 25px;mso-padding-alt:0px;border-radius:24px;" target="_blank"> LOGIN </a>
+                                      </td>
+                                    </tr>
+                                  </tbody>
+                                </table>
+                              </td>
+                            </tr>
+                          </tbody>
+                        </table>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td></tr></table><![endif]-->
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--[if mso | IE]></td></tr></table><table align="center" border="0" cellpadding="0" cellspacing="0" class="" role="presentation" style="width:600px;" width="600" bgcolor="white" ><tr><td style="line-height:0px;font-size:0px;mso-line-height-rule:exactly;"><![endif]-->
+    <div style="background:white;background-color:white;margin:0px auto;max-width:600px;">
+      <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="background:white;background-color:white;width:100%;">
+        <tbody>
+          <tr>
+            <td style="direction:ltr;font-size:0px;padding:20px 0;padding-bottom:0px;padding-top:0px;text-align:center;">
+              <!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" cellspacing="0"><tr><td class="" style="vertical-align:top;width:600px;" ><![endif]-->
+              <div class="mj-column-per-100 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:top;width:100%;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" width="100%">
+                  <tbody>
+                    <tr>
+                      <td style="vertical-align:top;padding-bottom:0px;">
+                        <table border="0" cellpadding="0" cellspacing="0" role="presentation" style width="100%">
+                          <tbody>
+                            <tr>
+                              <td align="left" style="font-size:0px;padding:10px 25px;padding-bottom:0px;word-break:break-word;">
+                                <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;">
+                                  <p>Hi {{ first_name }},</p>
+                                  <p>Let’s check in on your week!</p>
+                                  <p>Keep the momentum going – keep the streak alive!</p>
+                                  <p>Aim for 150-300 minutes of moderate or 75-150 minutes of vigorous activity weekly (or an equivalent mix) spread over at least 2 days, as recommended by the WHO.</p>
+                                </div>
+                              </td>
+                            </tr>
+                            <tr>
+                              <td align="center" style="font-size:0px;padding:10px 25px;word-break:break-word;">
+                                <p style="border-top:solid 2px #E1E8ED;font-size:1px;margin:0px auto;width:100%;">
+                                </p>
+                                <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" style="border-top:solid 2px #E1E8ED;font-size:1px;margin:0px auto;width:550px;" role="presentation" width="550px" ><tr><td style="height:0;line-height:0;"> &nbsp;
+</td></tr></table><![endif]-->
+                              </td>
+                            </tr>
+                          </tbody>
+                        </table>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td></tr></table><![endif]-->
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--[if mso | IE]></td></tr></table><table align="center" border="0" cellpadding="0" cellspacing="0" class="" role="presentation" style="width:600px;" width="600" bgcolor="white" ><tr><td style="line-height:0px;font-size:0px;mso-line-height-rule:exactly;"><![endif]-->
+    <div style="background:white;background-color:white;margin:0px auto;max-width:600px;">
+      <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="background:white;background-color:white;width:100%;">
+        <tbody>
+          <tr>
+            <td style="direction:ltr;font-size:0px;padding:20px 0;padding-top:5px;text-align:center;">
+              <!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" cellspacing="0"><tr><td class="" style="vertical-align:top;width:300px;" ><![endif]-->
+              <div class="mj-column-per-50 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:top;width:100%;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" width="100%">
+                  <tbody>
+                    <tr>
+                      <td style="vertical-align:top;padding-top:0px;">
+                        <table border="0" cellpadding="0" cellspacing="0" role="presentation" style width="100%">
+                          <tbody>
+                            <tr>
+                              <td align="left" style="font-size:0px;padding:10px 25px;padding-bottom:0px;word-break:break-word;">
+                                <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;">
+                                  <h3>Your Streak:</h3>
+                                </div>
+                              </td>
+                            </tr>
+                            <tr>
+                              <td align="left" style="font-size:0px;padding:10px 25px;padding-top:0px;word-break:break-word;">
+                                <table cellpadding="0" cellspacing="0" width="100%" border="0" style="color:#000000;font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:22px;table-layout:auto;width:100%;border:none;">
+                                  <tr class="calendar" style="width: 35px; height: 35px; text-align: center; padding: 0px;" align="center">
+                                    <td style="font-weight: bold;">
+                                      <!--[if mso]><v:oval xmlns:v="urn:schemas-microsoft-com:vml" style="height:30px;width:30px;" strokecolor="white" strokeweight="1px" fillcolor="FFFFFF"><v:textbox inset="0,0,0,0"><table width="100%" height="100%" cellpadding="0" cellspacing="0" border="0"><tr><td align="center" valign="middle"><font style="font-size:14px; color:#000000;">M</font></td></tr></table></v:textbox></v:oval><![endif]-->
+                                      <!--[if !mso]><!-->
+                                      <div class="day" style="height: 25px; width: 25px; margin-left: auto; margin-right: auto; justify-content: center; align-items: center; display: flex; border-radius: 9999px; background-color: #FFFFFF; color: #000000;">M</div>
+                                      <!--<![endif]-->
+                                    </td>
+                                    <td style="font-weight: bold;">
+                                      <!--[if mso]><v:oval xmlns:v="urn:schemas-microsoft-com:vml" style="height:30px;width:30px;" strokecolor="white" strokeweight="1px" fillcolor="FFFFFF"><v:textbox inset="0,0,0,0"><table width="100%" height="100%" cellpadding="0" cellspacing="0" border="0"><tr><td align="center" valign="middle"><font style="font-size:14px; color:#000000;">T</font></td></tr></table></v:textbox></v:oval><![endif]-->
+                                      <!--[if !mso]><!-->
+                                      <div class="day" style="height: 25px; width: 25px; margin-left: auto; margin-right: auto; justify-content: center; align-items: center; display: flex; border-radius: 9999px; background-color: #FFFFFF; color: #000000;">T</div>
+                                      <!--<![endif]-->
+                                    </td>
+                                    <td style="font-weight: bold;">
+                                      <!--[if mso]><v:oval xmlns:v="urn:schemas-microsoft-com:vml" style="height:30px;width:30px;" strokecolor="white" strokeweight="1px" fillcolor="FFFFFF"><v:textbox inset="0,0,0,0"><table width="100%" height="100%" cellpadding="0" cellspacing="0" border="0"><tr><td align="center" valign="middle"><font style="font-size:14px; color:#000000;">W</font></td></tr></table></v:textbox></v:oval><![endif]-->
+                                      <!--[if !mso]><!-->
+                                      <div class="day" style="height: 25px; width: 25px; margin-left: auto; margin-right: auto; justify-content: center; align-items: center; display: flex; border-radius: 9999px; background-color: #FFFFFF; color: #000000;">W</div>
+                                      <!--<![endif]-->
+                                    </td>
+                                    <td style="font-weight: bold;">
+                                      <!--[if mso]><v:oval xmlns:v="urn:schemas-microsoft-com:vml" style="height:30px;width:30px;" strokecolor="white" strokeweight="1px" fillcolor="FFFFFF"><v:textbox inset="0,0,0,0"><table width="100%" height="100%" cellpadding="0" cellspacing="0" border="0"><tr><td align="center" valign="middle"><font style="font-size:14px; color:#000000;">T</font></td></tr></table></v:textbox></v:oval><![endif]-->
+                                      <!--[if !mso]><!-->
+                                      <div class="day" style="height: 25px; width: 25px; margin-left: auto; margin-right: auto; justify-content: center; align-items: center; display: flex; border-radius: 9999px; background-color: #FFFFFF; color: #000000;">T</div>
+                                      <!--<![endif]-->
+                                    </td>
+                                    <td style="font-weight: bold;">
+                                      <!--[if mso]><v:oval xmlns:v="urn:schemas-microsoft-com:vml" style="height:30px;width:30px;" strokecolor="white" strokeweight="1px" fillcolor="FFFFFF"><v:textbox inset="0,0,0,0"><table width="100%" height="100%" cellpadding="0" cellspacing="0" border="0"><tr><td align="center" valign="middle"><font style="font-size:14px; color:#000000;">F</font></td></tr></table></v:textbox></v:oval><![endif]-->
+                                      <!--[if !mso]><!-->
+                                      <div class="day" style="height: 25px; width: 25px; margin-left: auto; margin-right: auto; justify-content: center; align-items: center; display: flex; border-radius: 9999px; background-color: #FFFFFF; color: #000000;">F</div>
+                                      <!--<![endif]-->
+                                    </td>
+                                    <td style="font-weight: bold;">
+                                      <!--[if mso]><v:oval xmlns:v="urn:schemas-microsoft-com:vml" style="height:30px;width:30px;" strokecolor="white" strokeweight="1px" fillcolor="FFFFFF"><v:textbox inset="0,0,0,0"><table width="100%" height="100%" cellpadding="0" cellspacing="0" border="0"><tr><td align="center" valign="middle"><font style="font-size:14px; color:#000000;">S</font></td></tr></table></v:textbox></v:oval><![endif]-->
+                                      <!--[if !mso]><!-->
+                                      <div class="day" style="height: 25px; width: 25px; margin-left: auto; margin-right: auto; justify-content: center; align-items: center; display: flex; border-radius: 9999px; background-color: #FFFFFF; color: #000000;">S</div>
+                                      <!--<![endif]-->
+                                    </td>
+                                    <td style="font-weight: bold;">
+                                      <!--[if mso]><v:oval xmlns:v="urn:schemas-microsoft-com:vml" style="height:30px;width:30px;" strokecolor="white" strokeweight="1px" fillcolor="FFFFFF"><v:textbox inset="0,0,0,0"><table width="100%" height="100%" cellpadding="0" cellspacing="0" border="0"><tr><td align="center" valign="middle"><font style="font-size:14px; color:#000000;">S</font></td></tr></table></v:textbox></v:oval><![endif]-->
+                                      <!--[if !mso]><!-->
+                                      <div class="day" style="height: 25px; width: 25px; margin-left: auto; margin-right: auto; justify-content: center; align-items: center; display: flex; border-radius: 9999px; background-color: #FFFFFF; color: #000000;">S</div>
+                                      <!--<![endif]-->
+                                    </td>
+                                  </tr>
+                                  <mj-raw> {% for week in calendar %} </mj-raw>
+                                  <tr class="calendar" style="width: 35px; height: 35px; text-align: center; padding: 0px;" align="center">
+                                    <mj-raw> {% for day in week %} </mj-raw>
+                                    <td>
+                                      <!--[if mso]><v:oval xmlns:v="urn:schemas-microsoft-com:vml" style="height:30px;width:30px;" strokecolor="white" strokeweight="1px" fillcolor="{{ day.background_color }}"><v:textbox inset="0,0,0,0"><table width="100%" height="100%" cellpadding="0" cellspacing="0" border="0"><tr><td align="center" valign="middle"><font style="font-size:14px; color:{{ day.color }};">{{ day.day }}</font></td></tr></table></v:textbox></v:oval><![endif]-->
+                                      <!--[if !mso]><!-->
+                                      <div class="day" style="height: 25px; width: 25px; margin-left: auto; margin-right: auto; justify-content: center; align-items: center; display: flex; border-radius: 9999px; background-color: {{ day.background_color }}; color: {{ day.color }};">{{ day.day }}</div>
+                                      <!--<![endif]-->
+                                    </td>
+                                    <mj-raw> {% endfor %} </mj-raw>
+                                  </tr>
+                                  <mj-raw> {% endfor %} </mj-raw>
+                                  <tr>
+                                    <td colspan="7" style="padding-top:5px;padding-bottom:5px;text-align:center; font-family:Arial, sans-serif; background-color:#F3F7FA;">
+                                      <span style="display:inline-block; width:25px; height:25px; line-height:25px; text-align:center; mso-line-height-rule:exactly; mso-table-lspace:0pt; mso-table-rspace:0pt; border:2px solid #60A8D8; border-radius:50%; background-color:#60A8D8; color:#FFFFFF; font-weight:bold; font-family:Arial, sans-serif;"> &#10003; </span>
+                                      <span style="display:inline-block; height:25px; line-height: 25px; text-align: center;padding-left:5px; mso-table-lspace:0pt; mso-table-rspace:0pt;color: #6b7280;font-weight:bold;">{{ week_streak }} Week Streak</span>
+                                    </td>
+                                  </tr>
+                                </table>
+                              </td>
+                            </tr>
+                          </tbody>
+                        </table>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td><td class="" style="vertical-align:top;width:300px;" ><![endif]-->
+              <div class="mj-column-per-50 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:top;width:100%;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="vertical-align:top;" width="100%">
+                  <tbody>
+                    <table border="0" cellpadding="0" cellspacing="0" role="presentation" style width="100%">
+                      <tbody>
+                        <tr>
+                          <td align="left" style="font-size:0px;padding:10px 25px;padding-bottom:0px;word-break:break-word;">
+                            <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;">
+                              <h3>Your Personal 7-Day Goals:</h3>
+                            </div>
+                          </td>
+                        </tr>
+                        <tr>
+                          <td align="left" style="font-size:0px;padding:10px 25px;padding-top:0px;word-break:break-word;"> {% if goals.active_days is not None %} <table cellpadding="0" cellspacing="0" border="0" width="100%">
+                              <tr>
+                                <td style="height:10px; font-size:0; line-height:0;">&nbsp;</td>
+                              </tr>
+                              <tr>
+                                <td style="background-color:#f9f9f9; border-radius:8px; padding:18px;">
+                                  <table cellpadding="0" cellspacing="0" border="0" width="100%">
+                                    <tr>
+                                      <td style="font-size:14px; line-height:16px; mso-line-height-rule:exactly; font-weight:bold; color: #6b7280;">Active Days</td>
+                                      <td align="right" style="font-size:14px; line-height:16px; mso-line-height-rule:exactly; color: #6b7280;">{{ goals.active_days.recorded }} days <span style="font-size:10px;">/ {{ goals.active_days.target }} days</span></td>
+                                    </tr>
+                                    <tr>
+                                      <td colspan="2" height="12" style="padding-top:8px; line-height:0; font-size:0;">
+                                        <!--[if mso]><v:roundrect xmlns:v="urn:schemas-microsoft-com:vml" arcsize="50%" strokecolor="#e5e5e5" strokeweight="1px" style="width:{{ goals.active_days.percent_vml }}%;height:12px;" fillcolor="#4a78b5"><v:fill color="#4a78b5" /></v:roundrect><![endif]-->
+                                        <!--[if !mso]><!-- -->
+                                        <div style="background:#e5e5e5; border-radius:4px; width:100%; height:12px;">
+                                          <div style="background:#4a78b5; height:12px; border-radius:4px; width:{{ goals.active_days.percent }}%;"></div>
+                                        </div>
+                                        <!--<![endif]-->
+                                      </td>
+                                    </tr>
+                                  </table>
+                                </td>
+                              </tr>
+                            </table> {% endif %} {% if goals.minutes is not None %} <table cellpadding="0" cellspacing="0" border="0" width="100%">
+                              <tr>
+                                <td style="height:15px; font-size:0; line-height:0;">&nbsp;</td>
+                              </tr>
+                              <tr>
+                                <td style="background-color:#f9f9f9; border-radius:8px; padding:18px;">
+                                  <table cellpadding="0" cellspacing="0" border="0" width="100%">
+                                    <tr>
+                                      <td style="font-size:14px; line-height:16px; mso-line-height-rule:exactly; font-weight:bold; color: #6b7280;">Exercise</td>
+                                      <td align="right" style="font-size:14px; line-height:16px; mso-line-height-rule:exactly; color: #6b7280;">{{ goals.minutes.recorded }} min <span style="font-size:10px;">/ {{ goals.minutes.target }} min</span></td>
+                                    </tr>
+                                    <tr>
+                                      <td colspan="2" height="12" style="padding-top:8px; line-height:0; font-size:0;">
+                                        <!--[if mso]><v:roundrect xmlns:v="urn:schemas-microsoft-com:vml" arcsize="50%" strokecolor="#e5e5e5" strokeweight="1px" style="width:{{ goals.minutes.percent_vml }}%;height:12px;" fillcolor="#4a78b5"><v:fill color="#4a78b5" /></v:roundrect><![endif]-->
+                                        <!--[if !mso]><!-- -->
+                                        <div style="background:#e5e5e5; border-radius:4px; width:100%; height:12px;">
+                                          <div style="background:#4a78b5; height:12px; border-radius:4px; width:{{ goals.minutes.percent }}%;"></div>
+                                        </div>
+                                        <!--<![endif]-->
+                                      </td>
+                                    </tr>
+                                  </table>
+                                </td>
+                              </tr>
+                            </table> {% endif %} {% if goals.distance is not None %} <table cellpadding="0" cellspacing="0" border="0" width="100%">
+                              <tr>
+                                <td style="height:15px; font-size:0; line-height:0;">&nbsp;</td>
+                              </tr>
+                              <tr>
+                                <td style="background-color:#f9f9f9; border-radius:8px; padding:18px;">
+                                  <table cellpadding="0" cellspacing="0" border="0" width="100%">
+                                    <tr>
+                                      <td style="font-size:14px; line-height:16px; mso-line-height-rule:exactly; font-weight:bold; color: #6b7280;">Distance</td>
+                                      <td align="right" style="font-size:14px; line-height:16px; mso-line-height-rule:exactly; color: #6b7280;">{{ goals.distance.recorded }} km <span style="font-size:10px;">/ {{ goals.distance.target }} km</span></td>
+                                    </tr>
+                                    <tr>
+                                      <td colspan="2" height="12" style="padding-top:8px; line-height:0; font-size:0;">
+                                        <!--[if mso]><v:roundrect xmlns:v="urn:schemas-microsoft-com:vml" arcsize="50%" strokecolor="#e5e5e5" strokeweight="1px" style="width:{{ goals.distance.percent_vml }}%;height:12px;" fillcolor="#4a78b5"><v:fill color="#4a78b5" /></v:roundrect><![endif]-->
+                                        <!--[if !mso]><!-- -->
+                                        <div style="background:#e5e5e5; border-radius:4px; width:100%; height:12px;">
+                                          <div style="background:#4a78b5; height:12px; border-radius:4px; width:{{ goals.distance.percent }}%;"></div>
+                                        </div>
+                                        <!--<![endif]-->
+                                      </td>
+                                    </tr>
+                                  </table>
+                                </td>
+                              </tr>
+                            </table> {% endif %} </td>
+                        </tr>
+                      </tbody>
+                    </table>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td></tr></table><![endif]-->
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--[if mso | IE]></td></tr></table><![endif]--> {% if openai_quote is not None %}
+    <!-- AI Health Quote -->
+    <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" class="" role="presentation" style="width:600px;" width="600" bgcolor="#075985" ><tr><td style="line-height:0px;font-size:0px;mso-line-height-rule:exactly;"><![endif]-->
+    <div style="background:#075985;background-color:#075985;margin:0px auto;max-width:600px;">
+      <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="background:#075985;background-color:#075985;width:100%;">
+        <tbody>
+          <tr>
+            <td style="direction:ltr;font-size:0px;padding:20px 0;text-align:center;">
+              <!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" cellspacing="0"><tr><td class="" style="vertical-align:middle;width:600px;" ><![endif]-->
+              <div class="mj-column-per-100 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:middle;width:100%;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="vertical-align:middle;" width="100%">
+                  <tbody>
+                    <tr>
+                      <td align="center" style="font-size:0px;padding:10px 25px;padding-top:20px;padding-bottom:10px;word-break:break-word;">
+                        <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:16px;line-height:1.2;text-align:center;color:#ffffff;">{{ openai_quote }}</div>
+                      </td>
+                    </tr>
+                    <tr>
+                      <td align="center" style="font-size:0px;padding:10px 25px;padding-right:100px;padding-bottom:10px;padding-left:100px;word-break:break-word;">
+                        <p style="border-top:solid 1px #ffffff;font-size:1px;margin:0px auto;width:100%;">
+                        </p>
+                        <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" style="border-top:solid 1px #ffffff;font-size:1px;margin:0px auto;width:400px;" role="presentation" width="400px" ><tr><td style="height:0;line-height:0;"> &nbsp;
+</td></tr></table><![endif]-->
+                      </td>
+                    </tr>
+                    <tr>
+                      <td align="center" style="font-size:0px;padding:10px 25px;padding-top:0px;padding-bottom:0px;word-break:break-word;">
+                        <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:11px;line-height:1.2;text-align:center;color:#e5e7eb;">
+                          <p>by OpenAI's ChatGPT 4o</p>
+                        </div>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td></tr></table><![endif]-->
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--[if mso | IE]></td></tr></table><![endif]--> {% endif %}
+    <!-- Final remarks -->
+    <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" class="" role="presentation" style="width:600px;" width="600" bgcolor="white" ><tr><td style="line-height:0px;font-size:0px;mso-line-height-rule:exactly;"><![endif]-->
+    <div style="background:white;background-color:white;margin:0px auto;max-width:600px;">
+      <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="background:white;background-color:white;width:100%;">
+        <tbody>
+          <tr>
+            <td style="direction:ltr;font-size:0px;padding:20px 0;padding-bottom:0px;padding-top:0px;text-align:center;">
+              <!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" cellspacing="0"><tr><td class="" style="vertical-align:top;width:600px;" ><![endif]-->
+              <div class="mj-column-per-100 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:top;width:100%;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="vertical-align:top;" width="100%">
+                  <tbody> {% if openai_quote is None %} <tr>
+                      <td align="center" style="font-size:0px;padding:10px 25px;word-break:break-word;">
+                        <p style="border-top:solid 2px #E1E8ED;font-size:1px;margin:0px auto;width:100%;">
+                        </p>
+                        <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" style="border-top:solid 2px #E1E8ED;font-size:1px;margin:0px auto;width:550px;" role="presentation" width="550px" ><tr><td style="height:0;line-height:0;"> &nbsp;
+</td></tr></table><![endif]-->
+                      </td>
+                    </tr> {% endif %} <tr>
+                      <td align="left" style="font-size:0px;padding:10px 25px;padding-top:20px;word-break:break-word;">
+                        <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;">Login to see more detailed analyses, charts, and breakdowns:</div>
+                      </td>
+                    </tr>
+                    <tr>
+                      <td align="center" vertical-align="middle" style="font-size:0px;padding:10px 25px;padding-top:5px;padding-bottom:2px;word-break:break-word;">
+                        <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="border-collapse:separate;line-height:100%;">
+                          <tbody>
+                            <tr>
+                              <td align="center" bgcolor="#075985" role="presentation" style="border:none;border-radius:24px;cursor:auto;mso-padding-alt:10px 25px;background:#075985;" valign="middle">
+                                <a href="{{ MAIN_HOST }}/login" style="display:inline-block;background:#075985;color:#ffffff;font-family:Helvetica, Arial, sans-serif, Helvetica, Arial, sans-serif;font-size:13px;font-weight:normal;line-height:120%;margin:0;text-decoration:none;text-transform:none;padding:10px 25px;mso-padding-alt:0px;border-radius:24px;" target="_blank"> LOGIN </a>
+                              </td>
+                            </tr>
+                          </tbody>
+                        </table>
+                      </td>
+                    </tr>
+                    <tr>
+                      <td align="left" style="font-size:0px;padding:10px 25px;padding-top:0px;padding-bottom:10px;word-break:break-word;">
+                        <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;">
+                          <p>Enjoy the Competition.</p>
+                          <p>Good luck!</p>
+                        </div>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td></tr></table><![endif]-->
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--[if mso | IE]></td></tr></table><![endif]-->
+    <!-- Footnote -->
+    <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;">
+      <tbody>
+        <tr>
+          <td>
+            <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" class="" role="presentation" style="width:600px;" width="600" ><tr><td style="line-height:0px;font-size:0px;mso-line-height-rule:exactly;"><![endif]-->
+            <div style="margin:0px auto;max-width:600px;">
+              <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;">
+                <tbody>
+                  <tr>
+                    <td style="direction:ltr;font-size:0px;padding:20px 0;text-align:center;">
+                      <!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" cellspacing="0"><tr><td class="" style="vertical-align:middle;width:600px;" ><![endif]-->
+                      <div class="mj-column-per-100 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:middle;width:100%;">
+                        <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="vertical-align:middle;" width="100%">
+                          <tbody>
+                            <tr>
+                              <td align="center" style="font-size:0px;padding:10px 25px;padding-top:0;padding-bottom:0px;word-break:break-word;">
+                                <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:11px;line-height:1.2;text-align:center;color:#9a9ea6;"><span class="apple-link">Workout Challenge</span>
+                                  <br> Any issues? <a href="mailto:{{ EMAIL_REPLY_TO }}">Send us an Email</a>. <br> See the <a href="https://github.com/vanalmsick/workout_challenge">Source Code</a>.
+                                </div>
+                              </td>
+                            </tr>
+                          </tbody>
+                        </table>
+                      </div>
+                      <!--[if mso | IE]></td></tr></table><![endif]-->
+                    </td>
+                  </tr>
+                </tbody>
+              </table>
+            </div>
+            <!--[if mso | IE]></td></tr></table><![endif]-->
+          </td>
+        </tr>
+      </tbody>
+    </table>
+  </div>
+</body>
+
+</html>

src-backend/custom_user/templates/email_weekly.mjml

@@ -0,0 +1,270 @@
+<mjml>
+  <!-- Written with https://mjml.io/ -->
+  <mj-head>
+    <mj-preview>Keep the momentum going – keep the streak alive! Aim for 150-300 minutes of moderate or 75-150 minutes of vigorous activity weekly (or an equivalent mix) spread over at least 2 days, as recommended by the WHO.</mj-preview>
+    <mj-attributes>
+      <mj-text line-height="1.2" />
+    </mj-attributes>
+    <mj-style inline="inline"> 
+td div .streak {
+    height: 25px;
+    width: 25px;
+    margin-left: auto;
+    margin-right: auto;
+    justify-content: center;
+    align-items: center;
+    display: flex;
+    border: 2px solid #075971;
+    border-radius: 9999px;
+    color: #075971;
+    font-weight: bold;
+}
+
+td div .day {
+    height: 25px;
+    width: 25px;
+    margin-left: auto;
+    margin-right: auto;
+    justify-content: center;
+    align-items: center;
+    display: flex;
+    border-radius: 9999px;
+}
+
+.calendar {
+    width: 35px;
+    height: 35px;
+    text-align: center;
+    padding: 0px;
+}
+  </mj-style>
+  </mj-head>
+  <mj-body background-color="#E1E8ED">
+    <mj-hero mode="fixed-height" height="200px" background-url="{{ MAIN_HOST }}/running_email.jpg" background-size="cover" background-repeat="no-repeat" background-color="#075985">
+      <mj-text align="center" font-size="30px" color="#ffffff" padding-bottom="10px" padding-top="45px" css-class="no-invert">
+        Workout Challenge
+      </mj-text>
+      <mj-button background-color="#075985" color="#fff" border-radius="24px" border="1px solid #fff" href="{{ MAIN_HOST }}/login" font-family="Helvetica, Arial, sans-serif" padding="10px 25px">
+        LOGIN
+      </mj-button>
+    </mj-hero>
+    <mj-section padding-top="0px" padding-bottom="0px" background-color="white">
+      <mj-column padding-bottom="0px">
+        <mj-text padding-bottom="0px">
+          <p>Hi {{ first_name }},</p>
+          <p>Let’s check in on your week!</p>
+          <p>Keep the momentum going – keep the streak alive!</p>
+          <p>Aim for 150-300 minutes of moderate or 75-150 minutes of vigorous activity weekly (or an equivalent mix) spread over at least 2 days, as recommended by the WHO.</p>
+        </mj-text>
+        <mj-divider border-color="#E1E8ED" border-width="2px"></mj-divider>
+      </mj-column>
+    </mj-section>
+    <mj-section background-color="white" padding-top="5px">
+      <mj-column padding-top="0px">
+        <mj-text padding-bottom="0px">
+          <h3>Your Streak:</h3>
+        </mj-text>
+        <mj-table padding-top="0px">
+          <tr class="calendar">
+            <th>M</th>
+            <th>T</th>
+            <th>W</th>
+            <th>T</th>
+            <th>F</th>
+            <th>S</th>
+            <th>S</th>
+          </tr>
+          <mj-raw> {% for week in calendar %} </mj-raw>
+          <tr class="calendar">
+            <mj-raw> {% for day in week %} </mj-raw>
+              <td>
+                <!--[if mso]>
+                  <v:oval xmlns:v="urn:schemas-microsoft-com:vml" style="height:30px;width:30px;" strokecolor="white" strokeweight="1px" fillcolor="{{ day.background_color }}">
+                    <v:textbox inset="0,0,0,0">
+                      <table width="100%" height="100%" cellpadding="0" cellspacing="0" border="0">
+                        <tr>
+                          <td align="center" valign="middle">
+                            <font style="font-size:14px; color:{{ day.color }};">{{ day.day }}</font>
+                          </td>
+                        </tr>
+                      </table>
+                    </v:textbox>
+                  </v:oval>
+                <![endif]-->
+
+                <!--[if !mso]><!-->
+                  <div class="day" style="background-color: {{ day.background_color }}; color: {{ day.color }};">{{ day.day }}</div>
+                <!--<![endif]-->
+              </td>
+            <mj-raw> {% endfor %} </mj-raw>
+          </tr>
+          <mj-raw> {% endfor %} </mj-raw>
+
+          <tr>
+            <td colspan="7" style="padding-top:5px;padding-bottom:5px;text-align:center; font-family:Arial, sans-serif; background-color:#F3F7FA;">
+              <span style="display:inline-block; width:25px; height:25px; line-height:25px; text-align:center; mso-line-height-rule:exactly; mso-table-lspace:0pt; mso-table-rspace:0pt; border:2px solid #60A8D8; border-radius:50%; background-color:#60A8D8; color:#FFFFFF; font-weight:bold; font-family:Arial, sans-serif;">
+                &#10003;
+              </span>
+              <span style="display:inline-block; height:25px; line-height: 25px; text-align: center;padding-left:5px; mso-table-lspace:0pt; mso-table-rspace:0pt;color: #6b7280;font-weight:bold;">{{ week_streak }} Week Streak</span>
+            </td>
+        
+          </tr>
+        </mj-table>
+      </mj-column>
+      <mj-column>
+        <mj-raw>
+          
+          <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="" width="100%">
+            <tbody>
+              <tr>
+                <td align="left" style="font-size:0px;padding:10px 25px;padding-bottom:0px;word-break:break-word;">
+                  <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;">
+                    <h3>Your Personal 7-Day Goals:</h3>
+                  </div>
+                </td>
+              </tr>
+              <tr>
+                <td align="left" style="font-size:0px;padding:10px 25px;padding-top:0px;word-break:break-word;">
+
+                  {% if goals.active_days is not None %}
+                  <table cellpadding="0" cellspacing="0" border="0" width="100%">
+                    <tr>
+                      <td style="height:10px; font-size:0; line-height:0;">&nbsp;</td>
+                    </tr>
+                    <tr>
+                      <td style="background-color:#f9f9f9; border-radius:8px; padding:18px;">
+                        <table cellpadding="0" cellspacing="0" border="0" width="100%">
+                          <tr>
+                            <td style="font-size:14px; line-height:16px; mso-line-height-rule:exactly; font-weight:bold; color: #6b7280;">Active Days</td>
+                            <td align="right" style="font-size:14px; line-height:16px; mso-line-height-rule:exactly; color: #6b7280;">{{ goals.active_days.recorded }} days <span style="font-size:10px;">/ {{ goals.active_days.target }} days</span></td>
+                          </tr>
+                          <tr>
+                            <td colspan="2" height="12" style="padding-top:8px; line-height:0; font-size:0;">
+                              <!--[if mso]>
+                              <v:roundrect xmlns:v="urn:schemas-microsoft-com:vml" arcsize="50%" strokecolor="#e5e5e5" strokeweight="1px" style="width:{{ goals.active_days.percent_vml }}%;height:12px;" fillcolor="#4a78b5">
+                                <v:fill color="#4a78b5" />
+                              </v:roundrect>
+                              <![endif]-->
+                              <!--[if !mso]><!-- -->
+                              <div style="background:#e5e5e5; border-radius:4px; width:100%; height:12px;">
+                                <div style="background:#4a78b5; height:12px; border-radius:4px; width:{{ goals.active_days.percent }}%;"></div>
+                              </div>
+                              <!--<![endif]-->
+                            </td>
+                          </tr>
+                        </table>
+                      </td>
+                    </tr>
+                  </table>
+                  {% endif %}
+
+                  {% if goals.minutes is not None %}
+                  <table cellpadding="0" cellspacing="0" border="0" width="100%">
+                    <tr>
+                      <td style="height:15px; font-size:0; line-height:0;">&nbsp;</td>
+                    </tr>
+                    <tr>
+                      <td style="background-color:#f9f9f9; border-radius:8px; padding:18px;">
+                        <table cellpadding="0" cellspacing="0" border="0" width="100%">
+                          <tr>
+                            <td style="font-size:14px; line-height:16px; mso-line-height-rule:exactly; font-weight:bold; color: #6b7280;">Exercise</td>
+                            <td align="right" style="font-size:14px; line-height:16px; mso-line-height-rule:exactly; color: #6b7280;">{{ goals.minutes.recorded }} min <span style="font-size:10px;">/ {{ goals.minutes.target }} min</span></td>
+                          </tr>
+                          <tr>
+                            <td colspan="2" height="12" style="padding-top:8px; line-height:0; font-size:0;">
+                              <!--[if mso]>
+                              <v:roundrect xmlns:v="urn:schemas-microsoft-com:vml" arcsize="50%" strokecolor="#e5e5e5" strokeweight="1px" style="width:{{ goals.minutes.percent_vml }}%;height:12px;" fillcolor="#4a78b5">
+                                <v:fill color="#4a78b5" />
+                              </v:roundrect>
+                              <![endif]-->
+                              <!--[if !mso]><!-- -->
+                              <div style="background:#e5e5e5; border-radius:4px; width:100%; height:12px;">
+                                <div style="background:#4a78b5; height:12px; border-radius:4px; width:{{ goals.minutes.percent }}%;"></div>
+                              </div>
+                              <!--<![endif]-->
+                            </td>
+                          </tr>
+                        </table>
+                      </td>
+                    </tr>
+                  </table>
+                  {% endif %}
+
+                  {% if goals.distance is not None %}
+                  <table cellpadding="0" cellspacing="0" border="0" width="100%">
+                    <tr>
+                      <td style="height:15px; font-size:0; line-height:0;">&nbsp;</td>
+                    </tr>
+                    <tr>
+                      <td style="background-color:#f9f9f9; border-radius:8px; padding:18px;">
+                        <table cellpadding="0" cellspacing="0" border="0" width="100%">
+                          <tr>
+                            <td style="font-size:14px; line-height:16px; mso-line-height-rule:exactly; font-weight:bold; color: #6b7280;">Distance</td>
+                            <td align="right" style="font-size:14px; line-height:16px; mso-line-height-rule:exactly; color: #6b7280;">{{ goals.distance.recorded }} km <span style="font-size:10px;">/ {{ goals.distance.target }} km</span></td>
+                          </tr>
+                          <tr>
+                            <td colspan="2" height="12" style="padding-top:8px; line-height:0; font-size:0;">
+                              <!--[if mso]>
+                              <v:roundrect xmlns:v="urn:schemas-microsoft-com:vml" arcsize="50%" strokecolor="#e5e5e5" strokeweight="1px" style="width:{{ goals.distance.percent_vml }}%;height:12px;" fillcolor="#4a78b5">
+                                <v:fill color="#4a78b5" />
+                              </v:roundrect>
+                              <![endif]-->
+                              <!--[if !mso]><!-- -->
+                              <div style="background:#e5e5e5; border-radius:4px; width:100%; height:12px;">
+                                <div style="background:#4a78b5; height:12px; border-radius:4px; width:{{ goals.distance.percent }}%;"></div>
+                              </div>
+                              <!--<![endif]-->
+                            </td>
+                          </tr>
+                        </table>
+                      </td>
+                    </tr>
+                  </table>
+                  {% endif %}
+                </td>
+              </tr>
+            </tbody>
+          </table>
+        </mj-raw>
+      </mj-column>
+    </mj-section>
+    
+    <mj-raw> {% if openai_quote is not None %} </mj-raw>
+    <!-- AI Health Quote -->
+    <mj-section background-color="#075985" vertical-align="middle">
+      <mj-column width="100%" vertical-align="middle">
+        <mj-text align="center" color="#ffffff" font-size="16px" padding-bottom="10px" padding-top="20px">{{ openai_quote }}</mj-text>
+        <mj-divider border-color="#ffffff" border-style="solid" border-width="1px" padding-left="100px" padding-right="100px" padding-bottom="10px"></mj-divider>
+        <mj-text align="center" color="#e5e7eb" font-size="11px" padding-bottom="0px" padding-top="0px">
+          <p>by OpenAI's ChatGPT 4o</p>
+        </mj-text>
+      </mj-column>
+    </mj-section>
+    <mj-raw> {% endif %} </mj-raw>
+    
+    <!-- Final remarks -->
+    <mj-section padding-top="0px" padding-bottom="0px" background-color="white">
+      <mj-column>
+        <mj-raw> {% if openai_quote is None %} </mj-raw>
+          <mj-divider border-color="#E1E8ED" border-width="2px"></mj-divider>
+        <mj-raw> {% endif %} </mj-raw>
+        <mj-text padding-top="20px">Login to see more detailed analyses, charts, and breakdowns:</mj-text>
+        <mj-button align="center" background-color="#075985" color="#ffffff" border-radius="24px" href="{{ MAIN_HOST }}/login" font-family="Helvetica, Arial, sans-serif, Helvetica, Arial, sans-serif" padding-bottom="2px" padding-top="5px">LOGIN</mj-button>
+        <mj-text padding-bottom="10px" padding-top="0px">
+          <p>Enjoy the Competition.</p>
+          <p>Good luck!</p>
+        </mj-text>
+      </mj-column>
+    </mj-section>
+    
+    <!-- Footnote -->
+    <mj-section full-width="full-width">
+      <mj-column width="100%" vertical-align="middle">
+        <mj-text align="center" color="#9a9ea6" font-size="11px" padding-bottom="0px" padding-top="0">
+          <span class="apple-link">Workout Challenge</span>
+          <br> Any issues? <a href="mailto:{{ EMAIL_REPLY_TO }}">Send us an Email</a>. <br> See the <a href="https://github.com/vanalmsick/workout_challenge">Source Code</a>.
+        </mj-text>
+      </mj-column>
+    </mj-section>
+  </mj-body>
+</mjml>

src-backend/custom_user/templates/email_welcome.html

@@ -0,0 +1,375 @@
+<!doctype html>
+<html xmlns="http://www.w3.org/1999/xhtml" xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office">
+
+<head>
+  <title>
+  </title>
+  <!--[if !mso]><!-->
+  <meta http-equiv="X-UA-Compatible" content="IE=edge">
+  <!--<![endif]-->
+  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <style type="text/css">
+    #outlook a {
+      padding: 0;
+    }
+
+    body {
+      margin: 0;
+      padding: 0;
+      -webkit-text-size-adjust: 100%;
+      -ms-text-size-adjust: 100%;
+    }
+
+    table,
+    td {
+      border-collapse: collapse;
+      mso-table-lspace: 0pt;
+      mso-table-rspace: 0pt;
+    }
+
+    img {
+      border: 0;
+      height: auto;
+      line-height: 100%;
+      outline: none;
+      text-decoration: none;
+      -ms-interpolation-mode: bicubic;
+    }
+
+    p {
+      display: block;
+      margin: 13px 0;
+    }
+  </style>
+  <!--[if mso]>
+    <noscript>
+    <xml>
+    <o:OfficeDocumentSettings>
+      <o:AllowPNG/>
+      <o:PixelsPerInch>96</o:PixelsPerInch>
+    </o:OfficeDocumentSettings>
+    </xml>
+    </noscript>
+    <![endif]-->
+  <!--[if lte mso 11]>
+    <style type="text/css">
+      .mj-outlook-group-fix { width:100% !important; }
+    </style>
+    <![endif]-->
+  <!--[if !mso]><!-->
+  <link href="https://fonts.googleapis.com/css?family=Ubuntu:300,400,500,700" rel="stylesheet" type="text/css">
+  <style type="text/css">
+    @import url(https://fonts.googleapis.com/css?family=Ubuntu:300,400,500,700);
+  </style>
+  <!--<![endif]-->
+  <style type="text/css">
+    @media only screen and (min-width:480px) {
+      .mj-column-per-100 {
+        width: 100% !important;
+        max-width: 100%;
+      }
+
+      .mj-column-per-50 {
+        width: 50% !important;
+        max-width: 50%;
+      }
+    }
+  </style>
+  <style media="screen and (min-width:480px)">
+    .moz-text-html .mj-column-per-100 {
+      width: 100% !important;
+      max-width: 100%;
+    }
+
+    .moz-text-html .mj-column-per-50 {
+      width: 50% !important;
+      max-width: 50%;
+    }
+  </style>
+  <style type="text/css">
+  </style>
+  <style type="text/css">
+  </style>
+</head>
+
+<body style="word-spacing:normal;background-color:#E1E8ED;">
+  <div style="display:none;font-size:1px;color:#ffffff;line-height:1px;max-height:0px;max-width:0px;opacity:0;overflow:hidden;"> Thanks for signing up to the Workout Challenge! Bookmark the page in your browser. How does the competition work? How to earn activity points? You'll find out now! </div>
+  <div style="background-color:#E1E8ED;">
+    <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:600px;" width="600" ><tr><td style="line-height:0;font-size:0;mso-line-height-rule:exactly;"><v:image style="border:0;mso-position-horizontal:center;position:absolute;top:0;width:600px;z-index:-3;" src="{{ MAIN_HOST }}/running_email.jpg" xmlns:v="urn:schemas-microsoft-com:vml" /><![endif]-->
+    <div style="margin:0 auto;max-width:600px;">
+      <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;">
+        <tbody>
+          <tr style="vertical-align:top;">
+            <td background="{{ MAIN_HOST }}/running_email.jpg" style="background:#075985 url('{{ MAIN_HOST }}/running_email.jpg') no-repeat center center / cover;background-position:center center;background-repeat:no-repeat;padding:0px;vertical-align:top;" height="200">
+              <!--[if mso | IE]><table border="0" cellpadding="0" cellspacing="0" style="width:600px;" width="600" ><tr><td style=""><![endif]-->
+              <div class="mj-hero-content" style="margin:0px auto;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;margin:0px;">
+                  <tbody>
+                    <tr>
+                      <td style="">
+                        <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;margin:0px;">
+                          <tbody>
+                            <tr>
+                              <td align="center" class="no-invert" style="font-size:0px;padding:10px 25px;padding-top:45px;padding-bottom:10px;word-break:break-word;">
+                                <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:30px;line-height:1.2;text-align:center;color:#ffffff;">Workout Challenge</div>
+                              </td>
+                            </tr>
+                            <tr>
+                              <td align="center" style="font-size:0px;padding:10px 25px;word-break:break-word;">
+                                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="border-collapse:separate;line-height:100%;">
+                                  <tbody>
+                                    <tr>
+                                      <td align="center" bgcolor="#075985" role="presentation" style="border:1px solid #fff;border-radius:24px;cursor:auto;mso-padding-alt:10px 25px;background:#075985;" valign="middle">
+                                        <a href="{{ MAIN_HOST }}/login" style="display:inline-block;background:#075985;color:#ffffff;font-family:Helvetica, Arial, sans-serif;font-size:13px;font-weight:normal;line-height:120%;margin:0;text-decoration:none;text-transform:none;padding:10px 25px;mso-padding-alt:0px;border-radius:24px;" target="_blank"> LOGIN </a>
+                                      </td>
+                                    </tr>
+                                  </tbody>
+                                </table>
+                              </td>
+                            </tr>
+                          </tbody>
+                        </table>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td></tr></table><![endif]-->
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--[if mso | IE]></td></tr></table><table align="center" border="0" cellpadding="0" cellspacing="0" class="" role="presentation" style="width:600px;" width="600" bgcolor="white" ><tr><td style="line-height:0px;font-size:0px;mso-line-height-rule:exactly;"><![endif]-->
+    <div style="background:white;background-color:white;margin:0px auto;max-width:600px;">
+      <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="background:white;background-color:white;width:100%;">
+        <tbody>
+          <tr>
+            <td style="direction:ltr;font-size:0px;padding:20px 0;padding-bottom:0px;padding-top:0px;text-align:center;">
+              <!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" cellspacing="0"><tr><td class="" style="vertical-align:top;width:600px;" ><![endif]-->
+              <div class="mj-column-per-100 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:top;width:100%;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" width="100%">
+                  <tbody>
+                    <tr>
+                      <td style="vertical-align:top;padding-bottom:0px;">
+                        <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="" width="100%">
+                          <tbody>
+                            <tr>
+                              <td align="left" style="font-size:0px;padding:10px 25px;padding-bottom:0px;word-break:break-word;">
+                                <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;">
+                                  <p>Hi {{ first_name }},</p>
+                                  <p>Thanks for signing up to the <b>Workout Challenge</b>!</p>
+                                  <p><b>Bookmark the page:</b> <a href="{{ MAIN_HOST }}">{{ MAIN_HOST }}</a></p>
+                                </div>
+                              </td>
+                            </tr>
+                            <tr>
+                              <td align="center" style="font-size:0px;padding:10px 25px;word-break:break-word;">
+                                <p style="border-top:solid 2px #E1E8ED;font-size:1px;margin:0px auto;width:100%;">
+                                </p>
+                                <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" style="border-top:solid 2px #E1E8ED;font-size:1px;margin:0px auto;width:550px;" role="presentation" width="550px" ><tr><td style="height:0;line-height:0;"> &nbsp;
+</td></tr></table><![endif]-->
+                              </td>
+                            </tr>
+                          </tbody>
+                        </table>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td></tr></table><![endif]-->
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--[if mso | IE]></td></tr></table><![endif]-->
+    <!-- How-to Section -->
+    <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" class="" role="presentation" style="width:600px;" width="600" bgcolor="white" ><tr><td style="line-height:0px;font-size:0px;mso-line-height-rule:exactly;"><![endif]-->
+    <div style="background:white;background-color:white;margin:0px auto;max-width:600px;">
+      <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="background:white;background-color:white;width:100%;">
+        <tbody>
+          <tr>
+            <td style="direction:ltr;font-size:0px;padding:20px 0;padding-bottom:0px;padding-top:10px;text-align:center;">
+              <!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" cellspacing="0"><tr><td class="" style="vertical-align:top;width:300px;" ><![endif]-->
+              <div class="mj-column-per-50 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:top;width:100%;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="vertical-align:top;" width="100%">
+                  <tbody>
+                    <tr>
+                      <td align="left" style="font-size:0px;padding:10px 25px;padding-top:0px;padding-bottom:15px;word-break:break-word;">
+                        <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;">
+                          <h3>How does it work?</h3>
+                          <ul>
+                            <li>Join a friend's competition or create your own.</li>
+                            <li>For automatic workout import, link your Strava account to the Workout Challenge.</li>
+                            <li>Before a competition starts, join a team.</li>
+                          </ul>
+                        </div>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td><td class="" style="vertical-align:top;width:300px;" ><![endif]-->
+              <div class="mj-column-per-50 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:top;width:100%;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="vertical-align:top;" width="100%">
+                  <tbody>
+                    <tr>
+                      <td align="left" style="font-size:0px;padding:10px 25px;padding-top:0px;padding-bottom:15px;word-break:break-word;">
+                        <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;">
+                          <h3>How to earn activity points?</h3>
+                          <ul>
+                            <li>Each competition has its own activity goals.</li>
+                            <li>You earn <b>1 point for every 1%</b> progress toward a goal.</li>
+                            <li>For example, if the goal is 100 minutes of exercise and you work out 50 minutes, you earn 50 points.</li>
+                            <li><i>Note:</i> Some goals have <b>minimum or maximum limits</b>. Activities above/below these limits won’t earn you points and are marked with an asterisk (*).</li>
+                            <li>Hover over a goal to view its limits, or over the asterisk for more details.</li>
+                          </ul>
+                        </div>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td></tr></table><![endif]-->
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--[if mso | IE]></td></tr></table><![endif]--> {% if link_strava_note %}
+    <!-- Link Strava -->
+    <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" class="" role="presentation" style="width:600px;" width="600" bgcolor="#075985" ><tr><td style="line-height:0px;font-size:0px;mso-line-height-rule:exactly;"><![endif]-->
+    <div style="background:#075985;background-color:#075985;margin:0px auto;max-width:600px;">
+      <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="background:#075985;background-color:#075985;width:100%;">
+        <tbody>
+          <tr>
+            <td style="direction:ltr;font-size:0px;padding:20px 0;text-align:center;">
+              <!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" cellspacing="0"><tr><td class="" style="vertical-align:middle;width:600px;" ><![endif]-->
+              <div class="mj-column-per-100 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:middle;width:100%;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="vertical-align:middle;" width="100%">
+                  <tbody>
+                    <tr>
+                      <td align="center" style="font-size:0px;padding:10px 25px;padding-top:20px;padding-bottom:10px;word-break:break-word;">
+                        <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:18px;line-height:1.2;text-align:center;color:#ffffff;">Skip the hassle of manual logging – connect Strava for automatic workout imports!</div>
+                      </td>
+                    </tr>
+                    <tr>
+                      <td align="center" style="font-size:0px;padding:10px 25px;padding-right:100px;padding-bottom:20px;padding-left:100px;word-break:break-word;">
+                        <p style="border-top:solid 1px #ffffff;font-size:1px;margin:0px auto;width:100%;">
+                        </p>
+                        <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" style="border-top:solid 1px #ffffff;font-size:1px;margin:0px auto;width:400px;" role="presentation" width="400px" ><tr><td style="height:0;line-height:0;"> &nbsp;
+</td></tr></table><![endif]-->
+                      </td>
+                    </tr>
+                    <tr>
+                      <td align="center" style="font-size:0px;padding:10px 25px;padding-top:0px;padding-bottom:25px;word-break:break-word;">
+                        <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:11px;line-height:1.2;text-align:center;color:#e5e7eb;">
+                          <p>Every day at 4 AM, your workouts are automatically imported, only syncing the most essential data with Strava to respect your privacy:</p>
+                          <span>• Sport type</span><br />
+                          <span>• Start time & duration</span><br />
+                          <span>• Workout id</span><br />
+                          <span>• Distance, kcal, kj, avg. watt</span>
+                        </div>
+                      </td>
+                    </tr>
+                    <tr>
+                      <td align="center" vertical-align="middle" style="font-size:0px;padding:10px 25px;padding-top:0px;padding-bottom:5px;word-break:break-word;">
+                        <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="border-collapse:separate;line-height:100%;">
+                          <tbody>
+                            <tr>
+                              <td align="center" bgcolor="#ffffff" role="presentation" style="border:none;border-radius:24px;cursor:auto;mso-padding-alt:10px 25px;background:#ffffff;" valign="middle">
+                                <a href="{{ MAIN_HOST }}/strava/link" style="display:inline-block;background:#ffffff;color:#075985;font-family:Helvetica, Arial, sans-serif, Helvetica, Arial, sans-serif;font-size:13px;font-weight:normal;line-height:120%;margin:0;text-decoration:none;text-transform:none;padding:10px 25px;mso-padding-alt:0px;border-radius:24px;" target="_blank"> Link Strava </a>
+                              </td>
+                            </tr>
+                          </tbody>
+                        </table>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td></tr></table><![endif]-->
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--[if mso | IE]></td></tr></table><![endif]--> {% endif %}
+    <!-- Final remarks -->
+    <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" class="" role="presentation" style="width:600px;" width="600" bgcolor="white" ><tr><td style="line-height:0px;font-size:0px;mso-line-height-rule:exactly;"><![endif]-->
+    <div style="background:white;background-color:white;margin:0px auto;max-width:600px;">
+      <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="background:white;background-color:white;width:100%;">
+        <tbody>
+          <tr>
+            <td style="direction:ltr;font-size:0px;padding:20px 0;padding-bottom:0px;padding-top:0px;text-align:center;">
+              <!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" cellspacing="0"><tr><td class="" style="vertical-align:top;width:600px;" ><![endif]-->
+              <div class="mj-column-per-100 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:top;width:100%;">
+                <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="vertical-align:top;" width="100%">
+                  <tbody> {% if not link_strava_note %} <tr>
+                      <td align="center" style="font-size:0px;padding:10px 25px;word-break:break-word;">
+                        <p style="border-top:solid 2px #E1E8ED;font-size:1px;margin:0px auto;width:100%;">
+                        </p>
+                        <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" style="border-top:solid 2px #E1E8ED;font-size:1px;margin:0px auto;width:550px;" role="presentation" width="550px" ><tr><td style="height:0;line-height:0;"> &nbsp;
+</td></tr></table><![endif]-->
+                      </td>
+                    </tr> {% endif %} <tr>
+                      <td align="left" style="font-size:0px;padding:10px 25px;padding-top:5px;padding-bottom:10px;word-break:break-word;">
+                        <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:13px;line-height:1.2;text-align:left;color:#000000;">
+                          <p>Enjoy the Competition.</p>
+                          <p>Good luck!</p>
+                        </div>
+                      </td>
+                    </tr>
+                  </tbody>
+                </table>
+              </div>
+              <!--[if mso | IE]></td></tr></table><![endif]-->
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+    <!--[if mso | IE]></td></tr></table><![endif]-->
+    <!-- Footnote -->
+    <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;">
+      <tbody>
+        <tr>
+          <td>
+            <!--[if mso | IE]><table align="center" border="0" cellpadding="0" cellspacing="0" class="" role="presentation" style="width:600px;" width="600" ><tr><td style="line-height:0px;font-size:0px;mso-line-height-rule:exactly;"><![endif]-->
+            <div style="margin:0px auto;max-width:600px;">
+              <table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="width:100%;">
+                <tbody>
+                  <tr>
+                    <td style="direction:ltr;font-size:0px;padding:20px 0;text-align:center;">
+                      <!--[if mso | IE]><table role="presentation" border="0" cellpadding="0" cellspacing="0"><tr><td class="" style="vertical-align:middle;width:600px;" ><![endif]-->
+                      <div class="mj-column-per-100 mj-outlook-group-fix" style="font-size:0px;text-align:left;direction:ltr;display:inline-block;vertical-align:middle;width:100%;">
+                        <table border="0" cellpadding="0" cellspacing="0" role="presentation" style="vertical-align:middle;" width="100%">
+                          <tbody>
+                            <tr>
+                              <td align="center" style="font-size:0px;padding:10px 25px;padding-top:0;padding-bottom:0px;word-break:break-word;">
+                                <div style="font-family:Ubuntu, Helvetica, Arial, sans-serif;font-size:11px;line-height:1.2;text-align:center;color:#9a9ea6;"><span class="apple-link">Workout Challenge</span>
+                                  <br> Any issues? <a href="mailto:{{ EMAIL_REPLY_TO }}">Send us an Email</a>. <br> See the <a href="https://github.com/vanalmsick/workout_challenge">Source Code</a>.
+                                </div>
+                              </td>
+                            </tr>
+                          </tbody>
+                        </table>
+                      </div>
+                      <!--[if mso | IE]></td></tr></table><![endif]-->
+                    </td>
+                  </tr>
+                </tbody>
+              </table>
+            </div>
+            <!--[if mso | IE]></td></tr></table><![endif]-->
+          </td>
+        </tr>
+      </tbody>
+    </table>
+  </div>
+</body>
+
+</html>

src-backend/custom_user/templates/email_welcome.mjml

@@ -0,0 +1,99 @@
+<mjml>
+  <!-- Written with https://mjml.io/ -->
+  <mj-head>
+    <mj-preview>Thanks for signing up to the Workout Challenge! Bookmark the page in your browser. How does the competition work? How to earn activity points? You'll find out now!</mj-preview>
+    <mj-attributes>
+      <mj-text line-height="1.2" />
+    </mj-attributes>
+  </mj-head>
+  <mj-body background-color="#E1E8ED">
+    <mj-hero mode="fixed-height" height="200px" background-url="{{ MAIN_HOST }}/running_email.jpg" background-size="cover" background-repeat="no-repeat" background-color="#075985">
+      <mj-text align="center" font-size="30px" color="#ffffff" padding-bottom="10px" padding-top="45px" css-class="no-invert">
+        Workout Challenge
+      </mj-text>
+      <mj-button background-color="#075985" color="#fff" border-radius="24px" border="1px solid #fff" href="{{ MAIN_HOST }}/login" font-family="Helvetica, Arial, sans-serif" padding="10px 25px">
+        LOGIN
+      </mj-button>
+    </mj-hero>
+    
+    <mj-section padding-top="0px" padding-bottom="0px" background-color="white">
+      <mj-column padding-bottom="0px">
+        <mj-text padding-bottom="0px">
+          <p>Hi {{ first_name }},</p>
+          <p>Thanks for signing up to the <b>Workout Challenge</b>!</p>
+          <p><b>Bookmark the page:</b> <a href="{{ MAIN_HOST }}">{{ MAIN_HOST }}</a></p>
+        </mj-text>
+        <mj-divider border-color="#E1E8ED" border-width="2px"></mj-divider>
+      </mj-column>
+    </mj-section>
+      
+    <!-- How-to Section -->
+    <mj-section padding-top="10px" padding-bottom="0px" background-color="white">
+      <mj-column>
+        <mj-text padding-top="0px" padding-bottom="15px">
+          <h3>How does it work?</h3>
+          <ul>
+            <li>Join a friend's competition or create your own.</li>
+            <li>For automatic workout import, link your Strava account to the Workout Challenge.</li>
+            <li>Before a competition starts, join a team.</li>
+          </ul>
+        </mj-text>
+      </mj-column>
+      <mj-column>
+        <mj-text padding-top="0px" padding-bottom="15px">
+          <h3>How to earn activity points?</h3>
+          <ul>
+            <li>Each competition has its own activity goals.</li>
+            <li>You earn <b>1 point for every 1%</b> progress toward a goal.</li>
+            <li>For example, if the goal is 100 minutes of exercise and you work out 50 minutes, you earn 50 points.</li>
+            <li><i>Note:</i> Some goals have <b>minimum or maximum limits</b>. Activities above/below these limits won’t earn you points and are marked with an asterisk (*).</li>
+            <li>Hover over a goal to view its limits, or over the asterisk for more details.</li>
+          </ul>
+        </mj-text>
+      </mj-column>
+    </mj-section>
+      
+    <mj-raw> {% if link_strava_note %} </mj-raw>
+    <!-- Link Strava -->
+    <mj-section background-color="#075985" vertical-align="middle">
+      <mj-column width="100%" vertical-align="middle">
+        <mj-text align="center" color="#ffffff" font-size="18px" padding-bottom="10px" padding-top="20px">Skip the hassle of manual logging – connect Strava for automatic workout imports!</mj-text>
+        <mj-divider border-color="#fff" border-style="solid" border-width="1px" padding-left="100px" padding-right="100px" padding-bottom="20px"></mj-divider>
+        <mj-text align="center" color="#e5e7eb" font-size="11px" padding-bottom="25px" padding-top="0px">
+          <p>Every day at 4 AM, your workouts are automatically imported, only syncing the most essential data with Strava to respect your privacy:</p>
+          <span>• Sport type</span><br/>
+          <span>• Start time & duration</span><br/>
+          <span>• Workout id</span><br/>
+          <span>• Distance, kcal, kj, avg. watt</span>
+        </mj-text>
+        <mj-button align="center" background-color="#ffffff" color="#075985" border-radius="24px" href="{{ MAIN_HOST }}/strava/link" font-family="Helvetica, Arial, sans-serif, Helvetica, Arial, sans-serif" padding-bottom="5px" padding-top="0px">Link Strava</mj-button>
+      </mj-column>
+    </mj-section>
+    <mj-raw> {% endif %} </mj-raw>
+          
+    <!-- Final remarks -->
+    <mj-section padding-top="0px" padding-bottom="0px" background-color="white">
+      <mj-column>
+        <mj-raw> {% if not link_strava_note %} </mj-raw>
+          <mj-divider border-color="#E1E8ED" border-width="2px"></mj-divider>
+        <mj-raw> {% endif %} </mj-raw>
+        <mj-text padding-bottom="10px" padding-top="5px">
+          <p>Enjoy the Competition.</p>
+          <p>Good luck!</p>
+        </mj-text>
+      </mj-column>
+    </mj-section>
+          
+    <!-- Footnote -->
+    </mj-section>
+    <mj-section full-width="full-width">
+      <mj-column width="100%" vertical-align="middle">
+        <mj-text align="center" color="#9a9ea6" font-size="11px" padding-bottom="0px" padding-top="0">
+          <span class="apple-link">Workout Challenge</span>
+          <br> Any issues? <a href="mailto:{{ EMAIL_REPLY_TO }}">Send us an Email</a>. <br> See the <a href="https://github.com/vanalmsick/workout_challenge">Source Code</a>.
+        </mj-text>
+      </mj-column>
+    </mj-section>
+        
+  </mj-body>
+</mjml>

src-backend/custom_user/tests.py

@@ -0,0 +1,3 @@
+from django.test import TestCase
+
+# Create your tests here.

src-backend/custom_user/views.py

@@ -0,0 +1,181 @@
+import time, datetime
+import requests
+from rest_framework import viewsets
+from rest_framework.permissions import BasePermission, IsAdminUser, SAFE_METHODS, AllowAny
+from rest_framework.permissions import IsAuthenticated
+from django.db.models import Q
+from rest_framework.views import APIView
+from rest_framework.response import Response
+from rest_framework import status
+from celery.exceptions import TimeoutError
+from django.utils import timezone
+from django_filters.rest_framework import DjangoFilterBackend
+from django.shortcuts import get_object_or_404
+from django.conf import settings
+from django.core.cache import cache
+
+from .serializers import PasswordResetSerializer, PasswordResetConfirmSerializer
+from .models import CustomUser
+from .serializers import CustomUserSerializer
+from .filters import CustomUserFilter
+from .strava import sync_strava
+
+class IsOwnerOrReadOnly(BasePermission):
+    """ Permission class to only allow admins and owner to edit or delete entry """
+    def has_permission(self, request, view):
+        # Only authenticated users
+        if request.user.is_authenticated:
+            return True
+        return False
+
+    def has_object_permission(self, request, view, obj):
+        # Read requests always allowed
+        if request.method in SAFE_METHODS:
+            return True  # allow GET, HEAD, OPTIONS (GET is filtered at viweset level to only show allowed entries)
+        # Only workout user can edit workout
+        if hasattr(obj, 'user') and obj.user == request.user:
+            return True
+        # Only owner of competition can modify
+        elif hasattr(obj, 'owner') and obj.owner == request.user:
+            return True
+        # Only owner can modify goals and awards
+        elif hasattr(obj, 'competition') and hasattr(obj.competition, 'owner') and obj.competition.owner == request.user:
+            return True
+        # If admin allow all requests
+        if bool(request.user and request.user.is_staff):
+            return True
+        return False
+
+
+class UserPermissionClass(BasePermission):
+    """ Allow unauthenticated users to POST data - i.e. for registration """
+    def has_permission(self, request, view):
+        # Only create new requsts - i.e. POST
+        if request.method in ('POST', 'OPTIONS'):
+            return True
+        return request.user.is_authenticated
+
+    def has_object_permission(self, request, view, obj):
+        return obj.pk == request.user.pk
+
+
+class CustomUserViewSet(viewsets.ModelViewSet):
+    #queryset = Competition.objects.all()
+    serializer_class = CustomUserSerializer
+
+    filter_backends = [DjangoFilterBackend]
+    filterset_class = CustomUserFilter
+
+    permission_classes = [UserPermissionClass]
+
+    def get_queryset(self):
+        # return all competitions the user is owner of or a participant of
+        #time.sleep(3)  # throttle for testing
+        return CustomUser.objects.filter(Q(pk=self.request.user.pk) | Q(my_competitions__in=self.request.user.my_competitions.all())).distinct().order_by('username', 'id')
+
+    def get_object(self):
+        lookup_value = self.kwargs.get(self.lookup_field)
+
+        # Modify filter if I ask for myself instead of the id number
+        if str(lookup_value).lower() in ['me', 'my', 'myself', 'i']:
+            lookup_value = self.request.user.id
+
+        return get_object_or_404(self.get_queryset(), pk=lookup_value)
+
+
+class PasswordResetView(APIView):
+    permission_classes = [AllowAny]
+
+    def post(self, request):
+        serializer = PasswordResetSerializer(data=request.data)
+        if serializer.is_valid():
+            serializer.save(request=request)
+            return Response({"detail": "Password reset e-mail sent."})
+        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
+
+
+class PasswordResetConfirmView(APIView):
+    permission_classes = [AllowAny]
+
+    def post(self, request):
+        serializer = PasswordResetConfirmSerializer(data=request.data)
+        if serializer.is_valid():
+            serializer.save()
+            return Response({"detail": "Password has been reset."})
+        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
+
+
+class LinkStravaView(APIView):
+    """ API post view for users to link with Strava. """
+    permission_classes = [IsAuthenticated]
+
+    def post(self, request, code):
+        user = request.user
+        client_id = settings.STRAVA_CLIENT_ID
+        client_secret = settings.STRAVA_CLIENT_SECRET
+
+        if client_id == 1234321 or client_secret == "ReplaceWithClientSecret":
+            return Response({"message": "Sever configuration error - STRAVA_CLIENT_ID and/or STRAVA_CLIENT_SECRET are not set."}, status=status.HTTP_503_SERVICE_UNAVAILABLE)
+
+        response = requests.post(
+            url='https://www.strava.com/oauth/token',
+            data={
+                'client_id': client_id,
+                'client_secret': client_secret,
+                'code': code,
+                'grant_type': 'authorization_code'
+            }
+        )
+
+        if response.ok is False:
+            return Response({"message": "Invalid Strava linkage code"}, status=status.HTTP_400_BAD_REQUEST)
+
+        strava_tokens = response.json()
+        setattr(user, 'strava_refresh_token', strava_tokens.get('refresh_token', None))
+        setattr(user, 'strava_athlete_id', strava_tokens.get('athlete', {}).get('id', None))
+        user.save()
+
+        cache.set(f"strava_access_token_{user.id}", strava_tokens.get('access_token', None), int(strava_tokens.get('expires_in', 21600)) - 60)
+        try:
+            running_task = sync_strava.delay(user__id=user.id, start_datetime=datetime.datetime.now() - datetime.timedelta(days=43))
+            try:
+                running_task.get(timeout=100)
+            except TimeoutError:
+                print(f"Strava sync task is still running ({running_task.id}). Don't let the user wait so long.")
+        except requests.exceptions.HTTPError as err:
+            if '401 Client Error: Unauthorized' in str(err):
+                return Response({'message': 'Access to activities denied by Strava. Not sufficient permissions to download activities.'}, status=status.HTTP_403_FORBIDDEN)
+            else:
+                raise Response(err.response.json(), status=err.response.status_code)
+
+        return Response({"message": "Successfully linked Strava."}, status=status.HTTP_200_OK)
+
+
+class UnlinkStravaView(APIView):
+    """ API post view for users to unlink Strava. """
+    permission_classes = [IsAuthenticated]
+
+    def post(self, request):
+        user = request.user
+        setattr(user, 'strava_refresh_token', None)
+        setattr(user, 'strava_athlete_id', None)
+        user.save()
+
+        return Response({"message": "Successfully unlinked Strava."}, status=status.HTTP_200_OK)
+
+
+class SyncStravaView(APIView):
+    """ API get view for users to sync Strava. """
+    permission_classes = [IsAuthenticated]
+
+    def get(self, request):
+        user = request.user
+
+        if user.strava_refresh_token is None or user.strava_refresh_token == '':
+            return Response({"message": "Strava is not linked."}, status=status.HTTP_400_BAD_REQUEST)
+
+        if user.strava_last_synced_at is None or user.strava_last_synced_at == '' or user.strava_last_synced_at < (timezone.now() - datetime.timedelta(minutes=59)):
+            sync_strava(user__id=user.id)
+            return Response({"message": f"Successfully synced Strava."}, status=status.HTTP_200_OK)
+
+        return Response({"message": "Too many requests! You can only request a Strava sync every 60 minutes."}, status=status.HTTP_429_TOO_MANY_REQUESTS)

src-backend/manage.py

@@ -0,0 +1,31 @@
+#!/usr/bin/env python
+"""Django's command-line utility for administrative tasks."""
+import os
+import sys
+
+
+def make_sure_paths_exist():
+    """ Make sure data folder paths exist for the database and/or migrations. """
+    for path in ['./data', './data/db_migrations', './data/db_migrations/competition', './data/db_migrations/workouts', './data/db_migrations/custom_user']:
+        if not os.path.exists(path):
+            os.makedirs(path)
+            open(path + '/__init__.py', "a").close()
+
+
+def main():
+    """Run administrative tasks."""
+    os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'workout_challenge.settings')
+    try:
+        from django.core.management import execute_from_command_line
+    except ImportError as exc:
+        raise ImportError(
+            "Couldn't import Django. Are you sure it's installed and "
+            "available on your PYTHONPATH environment variable? Did you "
+            "forget to activate a virtual environment?"
+        ) from exc
+    execute_from_command_line(sys.argv)
+
+
+if __name__ == '__main__':
+    make_sure_paths_exist()
+    main()

src-backend/requirements.txt

@@ -0,0 +1,18 @@
+requests
+pytz
+qrcode[pil]
+django
+djangorestframework
+djangorestframework-simplejwt
+django-cors-headers
+django-filter
+psycopg2-binary
+celery
+flower
+redis
+django-redis
+django-celery-beat
+sentry-sdk[django]
+sentry-sdk[celery]
+openai>=1.0.0
+gevent

src-backend/workout_challenge/__init__.py

@@ -0,0 +1,3 @@
+from .celery import app as celery_app
+
+__all__ = ("celery_app",)

src-backend/workout_challenge/asgi.py

@@ -0,0 +1,16 @@
+"""
+ASGI config for workout_challenge project.
+
+It exposes the ASGI callable as a module-level variable named ``application``.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/4.2/howto/deployment/asgi/
+"""
+
+import os
+
+from django.core.asgi import get_asgi_application
+
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'workout_challenge.settings')
+
+application = get_asgi_application()

src-backend/workout_challenge/celery.py

@@ -0,0 +1,77 @@
+"""Celery task config"""
+
+import os
+
+from celery import Celery
+from celery.schedules import crontab
+
+# Set the default Django settings module for the 'celery' program.
+os.environ.setdefault("DJANGO_SETTINGS_MODULE", "workout_challenge.settings")
+
+app = Celery("workout_challenge")
+
+# Using a string here means the worker doesn't have to serialize
+# the configuration object to child processes.
+# - namespace='CELERY' means all celery-related configuration keys
+#   should have a `CELERY_` prefix.
+app.config_from_object("django.conf:settings", namespace="CELERY")
+
+# Load task modules from all registered Django apps.
+app.autodiscover_tasks()
+
+app.conf.beat_schedule = {
+    # every morning import users strava workouts
+    "strava_sync": {
+        "task": "custom_user.strava.daily_strava_sync",
+        "schedule": crontab(minute="44", hour="4"),
+        "args": (),
+    },
+    # not needed - just fallback - do all pending point recalc tasks in the morning
+    "point_recal": {
+        "task": "custom_user.point_recalc.recalc_points",
+        "schedule": crontab(minute="55", hour="5"),
+        "args": (),
+    },
+    # every Monday morning ask people who didn't connect Strava to please log their workouts
+    "send_all_log_workouts_email": {
+        "task": "custom_user.emails.celery_emails.send_all_log_workouts_email",
+        "schedule": crontab(day_of_week="1", minute="5", hour="9"),
+        "args": (),
+    },
+    # every Monday afternoon send competition leaderboards out
+    "send_all_leaderboard_emails": {
+        "task": "custom_user.emails.celery_emails.send_all_leaderboard_emails",
+        "schedule": crontab(day_of_week="1", minute="5", hour="15"),
+        "args": (),
+    },
+    # every Thursday afternoon send weekly check-ins out
+    "send_all_weekly_emails": {
+        "task": "custom_user.emails.celery_emails.send_all_weekly_emails",
+        "schedule": crontab(day_of_week="4", minute="5", hour="15"),
+        "args": (),
+    },
+    # every day at noon send start competition email
+    "send_all_competition_start_email": {
+        "task": "custom_user.emails.celery_emails.send_all_competition_start_email",
+        "schedule": crontab(minute="5", hour="12"),
+        "args": (),
+    },
+}
+
+
+def is_task_already_executing(task_name: str) -> bool:
+    """Returns whether the task with given task_name is already being executed.
+
+    Args:
+        task_name: Name of the task to check if it is running currently.
+    Returns: A boolean indicating whether the task with the given task name is
+        running currently.
+    """
+    active_tasks = app.control.inspect().active()
+    task_count = 0
+    for worker, running_tasks in active_tasks.items():
+        for task in running_tasks:
+            if task["name"] == task_name:
+                task_count += 1
+
+    return task_count > 1

src-backend/workout_challenge/settings.py

@@ -0,0 +1,261 @@
+"""
+Django settings for workout_challenge project.
+
+Generated by 'django-admin startproject' using Django 4.2.20.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/4.2/topics/settings/
+
+For the full list of settings and their values, see
+https://docs.djangoproject.com/en/4.2/ref/settings/
+"""
+
+import os
+import datetime, pytz
+from pathlib import Path
+from urllib.parse import urlparse
+import sentry_sdk
+from sentry_sdk.integrations.django import DjangoIntegration
+from sentry_sdk.integrations.celery import CeleryIntegration
+
+# Build paths inside the project like this: BASE_DIR / 'subdir'.
+BASE_DIR = Path(__file__).resolve().parent.parent
+DATA_DIR = BASE_DIR / "data"
+QR_CODE_PATH = BASE_DIR.parent / "src-frontend" / "public"
+
+
+# Quick-start development settings - unsuitable for production
+# See https://docs.djangoproject.com/en/4.2/howto/deployment/checklist/
+
+# SECURITY WARNING: keep the secret key used in production secret!
+SECRET_KEY = os.environ.get("SECRET_KEY", 'django-insecure-y4cob-qij5d!!h6^oy8bt_xqtuo%3s$w(^=7wq%9w%ckd(--9t')
+
+# SECURITY WARNING: don't run with debug turned on in production!
+DEBUG = os.environ.get("DEBUG", "false").lower() == "true"
+print(f'Debug modus is turned {"on" if DEBUG else "off"}')
+
+MAIN_HOST = os.environ.get("MAIN_HOST", "http://localhost")
+HOSTS = os.environ.get("HOSTS", "http://localhost,http://127.0.0.1").split(",")
+CSRF_TRUSTED_ORIGINS = HOSTS
+ALLOWED_HOSTS = [urlparse(url).netloc for url in HOSTS]
+CORS_ALLOWED_ORIGINS = HOSTS
+CORS_ALLOW_ALL_ORIGINS = True if DEBUG else False
+CORS_ALLOW_CREDENTIALS = True
+
+
+# Application definition
+
+INSTALLED_APPS = [
+    'django.contrib.admin',
+    'django.contrib.auth',
+    'django.contrib.contenttypes',
+    'django.contrib.sessions',
+    'django.contrib.messages',
+    'django.contrib.staticfiles',
+    'corsheaders',
+    'rest_framework',
+    'django_filters',
+    'celery',
+    'django_celery_beat',
+    'competition',
+    'workouts',
+    'custom_user',
+]
+
+MIDDLEWARE = [
+    "corsheaders.middleware.CorsMiddleware",
+    "django.middleware.common.CommonMiddleware",
+    'django.middleware.security.SecurityMiddleware',
+    'django.contrib.sessions.middleware.SessionMiddleware',
+    'django.middleware.common.CommonMiddleware',
+    'django.middleware.csrf.CsrfViewMiddleware',
+    'django.contrib.auth.middleware.AuthenticationMiddleware',
+    'django.contrib.messages.middleware.MessageMiddleware',
+    'django.middleware.clickjacking.XFrameOptionsMiddleware',
+]
+
+AUTH_USER_MODEL = "custom_user.CustomUser"
+ROOT_URLCONF = 'workout_challenge.urls'
+
+
+MIGRATION_MODULES = {
+    "competition": "data.db_migrations.competition",
+    "workouts": "data.db_migrations.workouts",
+    "custom_user": "data.db_migrations.custom_user",
+    # "django_celery_beat": "data.db_migrations.django_celery_beat",
+    # "django_celery_beat_periodictask": "data.db_migrations.django_celery_beat_periodictask",
+    # "sessions": "data.db_migrations.sessions",
+    # "auth": "data.db_migrations.auth",
+    # "authtoken": "data.db_migrations.authtoken",
+    # "admin": "data.db_migrations.admin",
+    # "contenttypes": "data.db_migrations.contenttypes",
+}
+
+
+TEMPLATES = [
+    {
+        'BACKEND': 'django.template.backends.django.DjangoTemplates',
+        'DIRS': [],
+        'APP_DIRS': True,
+        'OPTIONS': {
+            'context_processors': [
+                'django.template.context_processors.debug',
+                'django.template.context_processors.request',
+                'django.contrib.auth.context_processors.auth',
+                'django.contrib.messages.context_processors.messages',
+            ],
+        },
+    },
+]
+
+WSGI_APPLICATION = 'workout_challenge.wsgi.application'
+
+
+# Database
+# https://docs.djangoproject.com/en/4.2/ref/settings/#databases
+
+DATABASES = {
+    "default": {
+        "ENGINE": "django.db.backends.sqlite3",
+        "NAME": DATA_DIR / 'db.sqlite3',
+        "OPTIONS": {
+            "timeout": 20,  # seconds
+        },
+    }
+    if os.environ.get("POSTGRES_HOST", None) is None
+    else {
+        "ENGINE": "django.db.backends.postgresql",
+        "NAME": os.environ.get("POSTGRES_DB", "postgres"),
+        "USER": os.environ.get("POSTGRES_USER", "postgres"),
+        "PASSWORD": os.environ.get("POSTGRES_PASSWORD", ""),
+        "HOST": os.environ.get("POSTGRES_HOST", "localhost"),
+        "PORT": "",
+    }
+}
+
+
+# Password validation
+# https://docs.djangoproject.com/en/4.2/ref/settings/#auth-password-validators
+
+AUTH_PASSWORD_VALIDATORS = [
+    {
+        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
+    },
+]
+
+
+REST_FRAMEWORK = {
+    'DEFAULT_FILTER_BACKENDS': [
+        'django_filters.rest_framework.DjangoFilterBackend',
+    ],
+    'DEFAULT_AUTHENTICATION_CLASSES': [
+        'rest_framework_simplejwt.authentication.JWTAuthentication',
+    ],
+    'DEFAULT_PERMISSION_CLASSES': [
+        'rest_framework.permissions.IsAuthenticated',
+    ],
+}
+
+SIMPLE_JWT = {
+    'ACCESS_TOKEN_LIFETIME': datetime.timedelta(minutes=5),
+    'REFRESH_TOKEN_LIFETIME': datetime.timedelta(days=5),
+    'ROTATE_REFRESH_TOKENS': False,
+    'BLACKLIST_AFTER_ROTATION': True,
+    'UPDATE_LAST_LOGIN': False,
+}
+
+PASSWORD_RESET_TIMEOUT = 600  # seconds = 10 minutes
+
+# Internationalization
+# https://docs.djangoproject.com/en/4.2/topics/i18n/
+
+LANGUAGE_CODE = 'en-us'
+
+TIME_ZONE = CELERY_TIMEZONE = os.environ.get("TIME_ZONE", "Europe/London")
+TIME_ZONE_OBJ = pytz.timezone(TIME_ZONE)
+
+USE_I18N = True
+
+USE_TZ = True
+
+# Celery
+CELERY_BROKER_URL = 'redis://localhost:6379/0'
+CELERY_RESULT_BACKEND = 'redis://localhost:6379/0'
+
+CACHES = {
+    'default': ({
+        'BACKEND': 'django.core.cache.backends.locmem.LocMemCache',
+    } if DEBUG else {
+        "BACKEND": "django_redis.cache.RedisCache",
+        "LOCATION": "redis://0.0.0.0:6379/1",
+        "OPTIONS": {
+            "CLIENT_CLASS": "django_redis.client.DefaultClient",
+            "CONNECTION_POOL_KWARGS": {
+                "max_connections": 100,
+                "retry_on_timeout": True
+            },
+            "SOCKET_CONNECT_TIMEOUT": 5,
+            "SOCKET_TIMEOUT": 5,
+        }
+    })
+}
+
+
+# Static files (CSS, JavaScript, Images)
+# https://docs.djangoproject.com/en/4.2/howto/static-files/
+
+STATIC_URL = 'apistatic/'
+STATIC_ROOT = BASE_DIR / 'static'
+
+# Default primary key field type
+# https://docs.djangoproject.com/en/4.2/ref/settings/#default-auto-field
+
+DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
+
+
+# Strava API
+STRAVA_CLIENT_ID = int(os.environ.get("STRAVA_CLIENT_ID", 1234321))
+STRAVA_CLIENT_SECRET = os.environ.get("STRAVA_CLIENT_SECRET", "ReplaceWithClientSecret")
+STRAVA_LIMIT_15MIN = int(os.environ.get("STRAVA_LIMIT_15MIN", 100))
+STRAVA_LIMIT_DAY = int(os.environ.get("STRAVA_LIMIT_DAY", 1000))
+
+
+# Sentry
+if (sentry_sdk_url := os.environ.get("REACT_APP_SENTRY_DSN", None)) is not None:
+    sentry_sdk.init(
+        dsn=sentry_sdk_url,
+        environment="backend",
+        send_default_pii=False,
+        enable_tracing=True,
+        traces_sample_rate=0.25,
+        profiles_sample_rate=1.0,
+        integrations=[
+            DjangoIntegration(),
+            CeleryIntegration(monitor_beat_tasks=True),
+        ],
+    )
+
+
+# Emails
+EMAIL_BACKEND = "django.core.mail.backends.smtp.EmailBackend"
+EMAIL_HOST = os.environ.get("EMAIL_HOST", None)
+EMAIL_PORT = int(os.environ.get("EMAIL_PORT", 25))
+EMAIL_HOST_USER = os.environ.get("EMAIL_HOST_USER", None)
+EMAIL_HOST_PASSWORD = os.environ.get("EMAIL_HOST_PASSWORD", None)
+EMAIL_USE_TLS = None if (use_ssl := os.environ.get("EMAIL_USE_TLS", None)) is None else bool(use_ssl)
+EMAIL_USE_SSL = None if (use_ssl := os.environ.get("EMAIL_USE_SSL", None)) is None else bool(use_ssl)
+EMAIL_FROM = DEFAULT_FROM_EMAIL = os.environ.get("EMAIL_FROM", None)
+EMAIL_REPLY_TO = None if (reply_email := os.environ.get("EMAIL_REPLY_TO", None)) is None else reply_email.split(",")
+
+
+# OpenAI for AI quotes
+OPENAI_API_KEY = os.environ.get("OPENAI_API_KEY", None)

src-backend/workout_challenge/urls.py

@@ -0,0 +1,60 @@
+"""
+URL configuration for workout_challenge project.
+
+The `urlpatterns` list routes URLs to views. For more information please see:
+    https://docs.djangoproject.com/en/4.2/topics/http/urls/
+Examples:
+Function views
+    1. Add an import:  from my_app import views
+    2. Add a URL to urlpatterns:  path('', views.home, name='home')
+Class-based views
+    1. Add an import:  from other_app.views import Home
+    2. Add a URL to urlpatterns:  path('', Home.as_view(), name='home')
+Including another URLconf
+    1. Import the include() function: from django.urls import include, path
+    2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
+"""
+from django.contrib import admin
+from django.urls import path, include
+from rest_framework_simplejwt.views import (
+    TokenObtainPairView,
+    TokenRefreshView,
+)
+from rest_framework.routers import DefaultRouter
+from competition.views import CompetitionViewSet, TeamViewSet, ActivityGoalViewSet, PointsViewSet, CompetitionStatsQueryView, FeedQueryView, JoinCompetitionView, JoinTeamView, CeleryQueryView
+from workouts.views import WorkoutViewSet
+from custom_user.views import CustomUserViewSet, LinkStravaView, UnlinkStravaView, SyncStravaView, PasswordResetView, PasswordResetConfirmView
+
+router = DefaultRouter()
+router.register(r'competition', CompetitionViewSet, basename='competition')
+router.register(r'team', TeamViewSet, basename='teams')
+router.register(r'goal', ActivityGoalViewSet, basename='goal')
+router.register(r'workout', WorkoutViewSet, basename='workout')
+router.register(r'point', PointsViewSet, basename='points')
+router.register(r'user', CustomUserViewSet, basename='cutomuser')
+
+urlpatterns = [
+    path('api/', include([
+        path('', include(router.urls)),
+        path('stats/<int:competition>/', CompetitionStatsQueryView.as_view(), name='competition-stats'),
+        path('feed/<int:competition>/', FeedQueryView.as_view(), name='competition-feed'),
+        path('join/competition/<str:join_code>/', JoinCompetitionView.as_view(), name='join-competition'),
+        path('join/team/', JoinTeamView.as_view(), name='join-team'),
+        path('strava/link/<str:code>/', LinkStravaView.as_view(), name='strava-link'),
+        path('strava/unlink/', UnlinkStravaView.as_view(), name='strava-unlink'),
+        path('strava/sync/', SyncStravaView.as_view(), name='strava-sync'),
+        path('celery/tasks/', CeleryQueryView.as_view(), name='celery-task-list'),
+        path('celery/tasks/<str:task_id>/', CeleryQueryView.as_view(), name='celery-task-status'),
+        path('celery/', CeleryQueryView.as_view(), name='celery-task-run'),
+        path('token/', TokenObtainPairView.as_view(), name='token-initial'),
+        path('token/refresh/', TokenRefreshView.as_view(), name='token-refresh'),
+        path('password-reset/request/', PasswordResetView.as_view(), name='password-reset'),
+        path('password-reset/confirm/', PasswordResetConfirmView.as_view(), name='password-reset-confirm'),
+    ])),
+    path('admin/', admin.site.urls),
+]
+
+
+admin.site.site_header = 'Backend Admin Panel'
+admin.site.site_title = 'Workout Challenge Backend'
+admin.site.index_title = 'Welcome to the Workout Challenge Backend'

src-backend/workout_challenge/wsgi.py

@@ -0,0 +1,16 @@
+"""
+WSGI config for workout_challenge project.
+
+It exposes the WSGI callable as a module-level variable named ``application``.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/4.2/howto/deployment/wsgi/
+"""
+
+import os
+
+from django.core.wsgi import get_wsgi_application
+
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'workout_challenge.settings')
+
+application = get_wsgi_application()

src-backend/workouts/admin.py

@@ -0,0 +1,28 @@
+from django.contrib import admin
+
+from .models import Workout
+from competition.models import Points
+
+# Register your models here.
+class PointsInline(admin.TabularInline):
+    """Table of Competition categories"""
+
+    model = Points
+    fk_name = "workout"
+    can_delete = False
+    extra = 0
+
+@admin.register(Workout)
+class WorkoutAdmin(admin.ModelAdmin):
+    """Admin view of Workout"""
+
+    list_display = [
+        "user",
+        "sport_type",
+        "start_datetime",
+        "strava_id",
+    ]
+
+    inlines = [
+        PointsInline,
+    ]

src-backend/workouts/apps.py

@@ -0,0 +1,6 @@
+from django.apps import AppConfig
+
+
+class WorkoutsConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'workouts'

src-backend/workouts/filters.py

@@ -0,0 +1,13 @@
+# filters.py
+import django_filters
+from .models import Workout
+
+class WorkoutFilter(django_filters.FilterSet):
+    my = django_filters.CharFilter(method='filter_my')
+
+    def filter_my(request, queryset, *args, **kwargs):
+        return queryset.filter(id=request.request.user.id)
+
+    class Meta:
+        model = Workout
+        fields = {}

src-backend/workouts/models.py

@@ -0,0 +1,259 @@
+import datetime
+from decimal import Decimal
+
+from django.utils import timezone
+from django.conf import settings
+from django.db import models
+from django.db.models import Sum
+
+from custom_user.models import CustomUser
+from competition.scorer import trigger_workout_change, trigger_workout_delete
+
+# Create your models here.
+
+SPORT_TYPE_GROUPS = [
+    ('GROUP_ANY', 'Group: All Sports'),
+    ('GROUP_RUNNING', 'Group: Running (Run / Trail / Treadmill)'),
+    ('GROUP_BIKING', 'Group: Biking/Cycling (Except E-Bike)'),
+    ('GROUP_WALKING', 'Group: Walking (Walk / Wheelchair / Elliptical / Stepper)'),
+    ('GROUP_RACKET', 'Group: Racket Sports (Tennis / Squash / Badminton / Pickleball / Racquetball / Table Tennis)'),
+    ('GROUP_SOCIAL', 'Group: Social Sports (Soccer / Golf)'),
+    ('GROUP_CLASSES_CARDIO', 'Group: Cardio Gym Classes (Crossfit / HIIT)'),
+    ('GROUP_CLASSES_MINDFUL', 'Group: Mindfulness Classes (Yoga / Pilates)'),
+    ('GROUP_WATER_ACTIVE', 'Group: Active Water Sports (Swim / Canoe / Kayak / Kitesurf / Rowing / Surfing / Windsurf)'),
+]
+
+SPORT_TYPES = [
+    ('Steps', 'Total Daily Steps'),
+    ('Badminton', 'Badminton'),
+    ('Ride', 'Biking/Cycling'),
+    ('EBikeRide', 'Biking/Cycling (E-Bike)'),
+    ('GravelRide', 'Biking/Cycling (Gravel)'),
+    ('Handcycle', 'Biking/Cycling (Handcycle)'),
+    ('Velomobile', 'Biking/Cycling (Velomobile)'),
+    ('VirtualRide', 'Biking/Cycling (Virtual)'),
+    ('Canoeing', 'Canoe'),
+    ('Crossfit', 'Crossfit'),
+    ('Elliptical', 'Elliptical'),
+    ('Golf', 'Golf'),
+    ('HighIntensityIntervalTraining', 'High Intensity Interval Training (HIIT)'),
+    ('Hike', 'Hike'),
+    ('IceSkate', 'Ice Skate'),
+    ('InlineSkate', 'Inline Skate'),
+    ('Kayaking', 'Kayak'),
+    ('Kitesurf', 'Kitesurf'),
+    ('MountainBikeRide', 'Mountain-Biking/Cycling'),
+    ('EMountainBikeRide', 'Mountain-Biking/Cycling (E-Bike)'),
+    ('Pickleball', 'Pickleball'),
+    ('Pilates', 'Pilates'),
+    ('Racquetball', 'Racquetball'),
+    ('RockClimbing', 'Rock Climbing'),
+    ('Rowing', 'Rowing (Outdoor)'),
+    ('VirtualRow', 'Rowing (Virtual)'),
+    ('Run', 'Run'),
+    ('TrailRun', 'Run (Trail)'),
+    ('VirtualRun', 'Run (Treadmill / Vitual)'),
+    ('Sail', 'Sail'),
+    ('Skateboard', 'Skateboard'),
+    ('AlpineSki', 'Ski (Alpine)'),
+    ('BackcountrySki', 'Ski (Backcountry)'),
+    ('NordicSki', 'Ski (Nordic)'),
+    ('RollerSki', 'Ski (Roller/Inliner)'),
+    ('Snowboard', 'Snowboard'),
+    ('Soccer', 'Soccer / Football'),
+    ('Squash', 'Squash'),
+    ('StairStepper', 'Stair Stepper'),
+    ('StandUpPaddling', 'Stand-up Paddling'),
+    ('Surfing', 'Surf'),
+    ('Swim', 'Swim'),
+    ('TableTennis', 'Table Tennis'),
+    ('Tennis', 'Tennis'),
+    ('Walk', 'Walk'),
+    ('Snowshoe', 'Walk (Snowshoe)'),
+    ('WeightTraining', 'Weight Training'),
+    ('Wheelchair', 'Wheelchair'),
+    ('Windsurf', 'Windsurf'),
+    ('Yoga', 'Yoga'),
+    ('Workout', 'Other Workout'),
+]
+
+# MET (Metabolic Equivalent) Source https://pacompendium.com/adult-compendium/
+SPORT_MET = {
+    'Badminton': {1: 5.0, 2: 5.5, 3: 7.0, 4: 9.0},
+    'Ride': {1: 4.3, 2: 7.0, 3: 9.0, 4: 12.0},
+    'EBikeRide': {1: 4.0, 2: 6.0, 3: 6.8, 4: 7.0},
+    'GravelRide': {1: 4.3, 2: 7.0, 3: 9.0, 4: 12.0},
+    'Handcycle': {1: 4.3, 2: 7.0, 3: 9.0, 4: 12.0},
+    'Velomobile': {1: 4.3, 2: 7.0, 3: 9.0, 4: 12.0},
+    'VirtualRide': {1: 4.3, 2: 7.0, 3: 9.0, 4: 12.0},
+    'Canoeing': {1: 2.8, 2: 3.5, 3: 5.8, 4: 12.0},
+    'Crossfit': {1: 3.5, 2: 5.0, 3: 6.0, 4: 7.5},
+    'Elliptical': {1: 3.0, 2: 5.0, 3: 7.0, 4: 9.0},
+    'Golf': {1: 3.5, 2: 4.3, 3: 4.5, 4: 4.8},
+    'HighIntensityIntervalTraining': {1: 5.0, 2: 7.0, 3: 9.0, 4: 11.0},
+    'Hike': {1: 3.8, 2: 5.3, 3: 6.0, 4: 6.5},
+    'IceSkate': {1: 7.5, 2: 9.8, 3: 12.3, 4: 15.5},
+    'InlineSkate': {1: 7.5, 2: 9.8, 3: 12.3, 4: 15.5},
+    'Kayaking': {1: 5.0, 2: 7.0, 3: 9.0, 4: 13.5},
+    'Kitesurf': {1: 8.0, 2: 9.5, 3: 11.0, 4: 12.5},
+    'MountainBikeRide': {1: 7.0, 2: 9.0, 3: 11.0, 4: 14.0},
+    'EMountainBikeRide': {1: 6.0, 2: 8.0, 3: 8.8, 4: 9.0},
+    'Pickleball': {1: 5.0, 2: 5.5, 3: 7.0, 4: 9.0},
+    'Pilates': {1: 1.8, 2: 2.8, 3: 4.0, 4: 5.5},
+    'Racquetball': {1: 5.5, 2: 7.0, 3: 8.5, 4: 10.0},
+    'RockClimbing': {1: 5.8, 2: 7.3, 3: 8.8, 4: 10.5},
+    'Rowing': {1: 5.0, 2: 7.5, 3: 11.0, 4: 14.0},
+    'VirtualRow': {1: 5.0, 2: 7.5, 3: 11.0, 4: 14.0},
+    'Run': {1: 7.8, 2: 10.5, 3: 11.8, 4: 13.0},
+    'TrailRun': {1: 7.8, 2: 10.5, 3: 11.8, 4: 13.0},
+    'VirtualRun': {1: 7.8, 2: 10.5, 3: 11.8, 4: 13.0},
+    'Sail': {1: 3.0, 2: 3.3, 3: 4.5, 4: 9.3},
+    'Skateboard': {1: 5.0, 2: 6.0, 3: 6.8, 4: 8.5},
+    'AlpineSki': {1: 4.3, 2: 6.3, 3: 7.3, 4: 8.0},
+    'BackcountrySki': {1: 6.8, 2: 8.5, 3: 9.5, 4: 11.3},
+    'NordicSki': {1: 8.5, 2: 11.3, 3: 13.5, 4: 14.0},
+    'RollerSki': {1: 6.8, 2: 8.5, 3: 9.5, 4: 11.3},
+    'Snowboard': {1: 4.3, 2: 6.3, 3: 7.5, 4: 8.0},
+    'Soccer': {1: 3.5, 2: 5.5, 3: 7.0, 4: 9.5},
+    'Squash': {1: 5.0, 2: 7.3, 3: 9.0, 4: 12.0},
+    'StairStepper': {1: 5.5, 2: 6.0, 3: 8.0, 4: 11.0},
+    'StandUpPaddling': {1: 2.8, 2: 3.8, 3: 5.0, 4: 9.8},
+    'Surfing': {1: 3.0, 2: 5.0, 3: 7.0, 4: 9.0},
+    'Swim': {1: 5.8, 2: 8.0, 3: 9.8, 4: 10.5},
+    'TableTennis': {1: 3.5, 2: 4.0, 3: 5.5, 4: 7.0},
+    'Tennis': {1: 5.0, 2: 6.0, 3: 6.8, 4: 8.0},
+    'Walk': {1: 3.0, 2: 3.8, 3: 4.8, 4: 5.5},
+    'Snowshoe': {1: 5.0, 2: 5.8, 3: 6.8, 4: 7.5},
+    'WeightTraining': {1: 3.0, 2: 3.5, 3: 5.0, 4: 6.0},
+    'Wheelchair': {1: 3.3, 2: 3.8, 3: 5.3, 4: 6.3},
+    'Windsurf': {1: 5.0, 2: 7.0, 3: 11.0, 4: 14.0},
+    'Workout': {1: 2.5, 2: 4.0, 3: 6.0, 4: 8.0},
+    'Yoga': {1: 2.0, 2: 3.0, 3: 4.0, 4: 6.0},
+}
+
+INTENSITY_CATEGORIES = [
+    (1, 'Easy (Could do another one later today)'),
+    (2, 'Moderate (Done for today but tomorrow is a new day)'),
+    (3, 'Hard (Will definitely feel this workout tomorrow)'),
+    (4, "All Out (Can't do another one tomorrow)")
+]
+
+
+class Workout(models.Model):
+    """Workout - user logged workout"""
+
+    user = models.ForeignKey(CustomUser, on_delete=models.CASCADE, null=False, blank=False, primary_key=False)
+
+    sport_type = models.CharField(null=False, max_length=40, choices=SPORT_TYPES)
+    start_datetime = models.DateTimeField(null=False)
+    duration = models.DurationField(null=False)
+    intensity_category = models.IntegerField(null=True, choices=INTENSITY_CATEGORIES)
+    kcal = models.DecimalField(null=True, max_digits=7, decimal_places=2)
+    distance = models.DecimalField(null=True, max_digits=7, decimal_places=2)
+    steps = models.IntegerField(null=True)
+
+    strava_id = models.BigIntegerField(unique=True, null=True)
+    strava_intensity_avg_watts = models.DecimalField(null=True, max_digits=7, decimal_places=2)
+
+    @property
+    def duration_seconds(self):
+        return self.duration.seconds
+
+    def __str__(self):
+        """str print-out of model entry"""
+        return f"{self.start_datetime} - {self.sport_type} ({self.duration / (1_000 * 60)} min / {self.kcal} kcal)"
+
+    def __init__(self, *args, **kwargs):
+        """ save initial field values to be able to detect changes """
+        super().__init__(*args, **kwargs)
+        self._original = self._dict()
+
+    #@property
+    def _dict(self):
+        """ dict of current fields and values - to detect changes """
+        return {f.name: round(float(self.__dict__[f.attname]), 2) if isinstance(self.__dict__.get(f.attname), (Decimal, float)) else self.__dict__.get(f.attname) for f in self._meta.fields}
+
+    def get_changed_fields(self):
+        """ check which fields have changed """
+        current = self._dict()
+        return {
+            k: (v, current.get(k))
+            for k, v in self._original.items()
+            if v != current.get(k)
+        }
+
+    def save(self, *args, **kwargs):
+        """ trigger recalculation of points_capped if workout changes """
+        is_create = self.pk is None
+        scaling_kcal = float((1 if kwargs.get('user', None) is None else kwargs.get('user').scaling_kcal) if self.user is None else self.user.scaling_kcal)
+        scaling_distance = float((1 if kwargs.get('user', None) is None else kwargs.get('user').scaling_distance) if self.user is None else self.user.scaling_distance)
+        if self.sport_type == "Steps":
+            self.intensity_category = 1
+
+            # Subtract the steps from walks and runs from the daily total steps to not double count
+            recorded_walks = Workout.objects.filter(user=self.user, start_datetime__date=self.start_datetime, sport_type='Walk').aggregate(duration=Sum('duration'))['duration']
+            recorded_runs = Workout.objects.filter(user=self.user, start_datetime__date=self.start_datetime, sport_type='Run').aggregate(duration=Sum('duration'))['duration']
+            recorded_steps_walks = 0 if recorded_walks is None else 6_000 / (60 * 60) * recorded_walks.seconds
+            recorded_steps_runs = 0 if recorded_runs is None else 10_000 / (60 * 60) * recorded_runs.seconds
+            self.distance = 0.82 * scaling_distance * max(self.steps - recorded_steps_walks - recorded_steps_runs, 0) / 1000
+            base_duration_seconds = self.distance * (1 / scaling_distance) / 5 * 60 * 60
+            self.duration = datetime.timedelta(seconds=base_duration_seconds)
+            self.kcal = SPORT_MET["Walk"][self.intensity_category] * 75 * (base_duration_seconds / (60 * 60)) * scaling_kcal  # default human 75kg scaled up/down by scaler
+
+            # update start_datetime to server 23:59:00 in UTC
+            server_time = datetime.datetime.combine(self.start_datetime.date(), datetime.time(23, 59, 0))
+            self.start_datetime = timezone.make_aware(server_time).astimezone(datetime.timezone.utc)
+
+        if self.sport_type in ["Ride", "EBikeRide", "GravelRide", "Handcycle", "Velomobile", "VirtualRide", "MountainBikeRide", "EMountainBikeRide", "Run", "TrailRun", "VirtualRun", "Walk"]:
+            # estimate distance using database MET values
+            if self.distance is None or self.distance == "":
+                self.distance = SPORT_MET.get(self.sport_type, SPORT_MET['Workout'])[self.intensity_category] * (self.duration.seconds / (60 * 60)) * scaling_distance # default human 1000m scaled up/down by scaler
+
+        # default intensity 2
+        if self.intensity_category is None or self.intensity_category == "":
+            self.intensity_category = 2
+
+        # estimate kcal using database MET values
+        if self.kcal is None or self.kcal == "":
+            self.kcal = SPORT_MET.get(self.sport_type, SPORT_MET['Workout'])[self.intensity_category] * 75 * (self.duration.seconds / (60 * 60)) * scaling_kcal # default human 75kg scaled up/down by scaler
+
+        super().save(*args, **kwargs)
+        changed = self.get_changed_fields()
+        trigger_workout_change(
+            instance=self,
+            new=is_create,
+            changes=changed
+        )
+        self._original = self._dict()  # reset
+
+        # if workout is run or walk and steps were recorded on the same day, update steps to avoid double counting
+        if self.sport_type in ['Run', 'Walk']:
+            if 'start_datetime' in changed:
+                date_lst = datetime.datetime.fromisoformat(changed['start_datetime']) if type(changed['start_datetime']) is str else changed['start_datetime']
+                date_lst = list(date_lst)
+            else:
+                date_lst = datetime.datetime.fromisoformat(self.start_datetime) if type(self.start_datetime) is str else self.start_datetime
+                date_lst = [date_lst]
+            recorded_steps = Workout.objects.filter(user=self.user, start_datetime__date__in=date_lst, sport_type='Steps')
+            if len(recorded_steps) > 0:
+                for steps in recorded_steps:
+                    setattr(steps, 'distance', None)
+                    setattr(steps, 'kcal', None)
+                    steps.save()
+
+    def delete(self, *args, **kwargs):
+        """ trigger recalculation of points_capped if workout deleted """
+        deleted_run_or_walk = self.sport_type in ['Run', 'Walk']
+        trigger_workout_delete(
+            instance=self
+        )
+        super().delete(*args, **kwargs)
+        # if deleted workout was run or walk, update steps to give back counting
+        if deleted_run_or_walk:
+            recorded_steps = Workout.objects.filter(user=self.user, start_datetime__date=self.start_datetime, sport_type='Steps')
+            if len(recorded_steps) > 0:
+                for steps in recorded_steps:
+                    setattr(steps, 'distance', None)
+                    setattr(steps, 'kcal', None)
+                    setattr(steps, 'duration', datetime.timedelta(seconds=0))
+                    steps.save()

src-backend/workouts/serializers.py

@@ -0,0 +1,14 @@
+from rest_framework import serializers
+from .models import Workout
+
+
+class WorkoutSerializer(serializers.ModelSerializer):
+    def validate(self, data):
+        if data.get('sport_type') == 'Steps' and not data.get('steps'):
+            raise serializers.ValidationError({'steps': 'Steps field is required when sport type is Steps'})
+        return data
+
+    class Meta:
+        model = Workout
+        fields = ['id', 'sport_type', 'start_datetime', 'duration', 'duration_seconds', 'intensity_category', 'kcal', 'distance', 'steps', 'strava_id']
+        read_only_fields = ['id', 'duration_seconds', 'strava_id'] #'duration_seconds',

src-backend/workouts/tests.py

@@ -0,0 +1,3 @@
+from django.test import TestCase
+
+# Create your tests here.

src-backend/workouts/views.py

@@ -0,0 +1,28 @@
+import time
+from django.db.models import Q
+from rest_framework import viewsets
+from django_filters.rest_framework import DjangoFilterBackend
+
+from custom_user.views import IsOwnerOrReadOnly
+from .models import Workout
+from competition.scorer import trigger_workout_change
+from .serializers import WorkoutSerializer
+from .filters import WorkoutFilter
+
+
+class WorkoutViewSet(viewsets.ModelViewSet):
+    #queryset = Competition.objects.all()
+    serializer_class = WorkoutSerializer
+
+    filter_backends = [DjangoFilterBackend]
+    filterset_class = WorkoutFilter
+
+    permission_classes = [IsOwnerOrReadOnly]
+
+    def get_queryset(self):
+        # return all workouts from the user himself/herself
+        #time.sleep(3)  # throttle for testing
+        return Workout.objects.select_related('user').filter(user__id=self.request.user.id).order_by('-start_datetime', '-duration', '-id') # | Q(points__goal__competition__user=self.request.user)).distinct().order_by('-start_datetime', '-duration', '-id')
+
+    def perform_create(self, serializer):
+        serializer.save(user=self.request.user)