Base

stat/user_statistics/stat_management/admin.py

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+from django.contrib import admin
+
+# Register your models here.

stat/user_statistics/stat_management/apps.py

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+from django.apps import AppConfig
+from user_statistics.settings import STAT_APP_NAME
+
+
+class StatManagementConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = f'{STAT_APP_NAME}'
+
+    def ready(self):
+        import stat_management.signals

stat/user_statistics/stat_management/models.py

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+from django.db import models
+from django.contrib.auth.models import User
+from django.contrib.auth import get_user_model
+
+User = get_user_model()
+
+class GameHistory(models.Model):
+	player_1_id = models.ForeignKey(User, on_delete=models.CASCADE, related_name='player_1')
+	player_2_id = models.ForeignKey(User, on_delete=models.CASCADE, related_name='player_2')
+	player_1_score = models.IntegerField(default=0)
+	player_2_score = models.IntegerField(default=0)
+	winner_id = models.ForeignKey(User, on_delete=models.CASCADE, related_name='winner')
+	date_played = models.DateTimeField(auto_now_add=True)
+	duration = models.FloatField(default=0.0)
+
+	class Meta:
+		db_table = 'users_game_history'
+
+	def __str__(self):
+		return (f'{self.player_1_id} vs {self.player_2_id} '
+				f'on {self.date_played} '
+				f'winner is {self.winner_id} '
+				f'score is {self.player_1_score} - {self.player_2_score}')
+
+	@property
+	def player_1(self):
+		return {'username': self.player_1_id.username, 'score': self.player_1_score}
+
+	@property
+	def player_2(self):
+		return {'username': self.player_2_id.username, 'score': self.player_2_score}
+
+	@property
+	def winner(self):
+		return {'username': self.winner_id.username}
+	
+class Stats(models.Model):
+	player_id = models.ForeignKey(User, on_delete=models.CASCADE, related_name='player')
+	wins = models.IntegerField(default=0)
+	losses = models.IntegerField(default=0)
+	win_rate = models.FloatField(default=0.0)
+	total_games_played = models.IntegerField(default=0)
+	total_hours_played = models.FloatField(default=0.0)
+	goal_scored = models.IntegerField(default=0)
+	goal_conceded = models.IntegerField(default=0)
+
+	class Meta:
+		db_table = 'users_stats'
+
+	def __str__(self):
+		return (f'{self.player_id} wins: {self.wins}, losses: {self.losses}, win rate: {self.win_rate:.2f}, '
+				f'total games: {self.total_games_played}, total hours played: {self.total_hours_played:.2f}, '
+				f'goal scored: {self.goal_scored}, goal conceded: {self.goal_conceded}')
+
+

stat/user_statistics/stat_management/serializers.py

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+from rest_framework import serializers
+from .models import GameHistory, Stats
+
+class GameHistorySerializer(serializers.ModelSerializer):
+	player_1 = serializers.SerializerMethodField()
+	player_2 = serializers.SerializerMethodField()
+	winner = serializers.SerializerMethodField()
+
+	class Meta:
+		model = GameHistory
+		fields = [
+			'id', 'player_1_id', 'player_1_score', 'player_2_score', 'player_2_id',
+			'winner_id', 'player_1', 'player_2', 'winner', 'date_played', 'duration'
+		]
+
+	def get_player_1(self, obj):
+		return obj.player_1
+
+	def get_player_2(self, obj):
+		return obj.player_2
+
+	def get_winner(self, obj):
+		return obj.winner
+
+
+class StatsSerializer(serializers.ModelSerializer):
+	class Meta:
+		model = Stats
+		fields = '__all__'

stat/user_statistics/stat_management/signals.py

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+from django.db.models.signals import post_save
+from django.dispatch import receiver
+from .models import GameHistory, Stats
+
+@receiver(post_save, sender=GameHistory)
+def update_player_stats(sender, instance, created, **kwargs):
+	if created:
+		# get players
+		player_1_stats, _ = Stats.objects.get_or_create(player_id=instance.player_1_id)
+		player_2_stats, _ = Stats.objects.get_or_create(player_id=instance.player_2_id)
+
+		# update wins and losses
+		if instance.winner_id == instance.player_1_id:
+			player_1_stats.wins += 1
+			player_2_stats.losses += 1
+		else:
+			player_1_stats.losses += 1
+			player_2_stats.wins += 1
+
+		# update games played
+		player_1_stats.total_games_played += 1
+		player_2_stats.total_games_played += 1
+
+		# update win rate
+		player_1_stats.win_rate = player_1_stats.wins / player_1_stats.total_games_played * 100
+		player_2_stats.win_rate = player_2_stats.wins / player_2_stats.total_games_played * 100
+
+		# update hours played
+		player_1_stats.total_hours_played += instance.duration / 3600
+		player_2_stats.total_hours_played += instance.duration / 3600
+
+		# update goal scored
+		player_1_stats.goal_scored += instance.player_1_score
+		player_2_stats.goal_scored += instance.player_2_score
+
+		# update goal conceded
+		player_1_stats.goal_conceded += instance.player_2_score
+		player_2_stats.goal_conceded += instance.player_1_score
+
+		# save stats
+		player_1_stats.save()
+		player_2_stats.save()

stat/user_statistics/stat_management/tests.py

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+from django.contrib.auth.models import User
+from django.contrib.auth import get_user_model
+from django.urls import reverse
+from .models import GameHistory
+from .serializers import GameHistorySerializer
+from rest_framework.test import APITestCase
+from rest_framework import status
+
+User = get_user_model()
+
+# Create your tests here.
+class GameHistoryModelTest(APITestCase):
+
+	def setUp(self):
+		self.user_1 = User.objects.create_user(username='user1', password='password')
+		self.user_2 = User.objects.create_user(username='user2', password='password')
+		self.user_1.save()
+
+	def test_game_history_model(self):
+
+		# loging user1
+		self.client.login(username='user1', password='password')
+
+		# create a game history
+		gameHistory = {
+			'player_1_id': self.user_1.id,
+			'player_2_id': self.user_2.id,
+			'player_1_score': 5,
+			'player_2_score': 3,
+			'winner_id': self.user_1.id,
+			'duration': '60'
+		}
+
+		url = reverse('game_history')
+
+		print("data send to : ", url)
+		print("data send : ", gameHistory)
+		# send a GameHistory
+		response = self.client.post(url, gameHistory, format='json')
+		print(response.data)
+		self.assertEqual(response.status_code, status.HTTP_201_CREATED)
+
+		# get stats
+		url = reverse('stats')
+		print("data send to : ", url)
+		response = self.client.get(url)
+		print(response.data)
+		self.assertEqual(response.status_code, status.HTTP_200_OK)
+
+		# create a game history
+		gameHistory = {
+			'player_1_id': self.user_1.id,
+			'player_2_id': self.user_2.id,
+			'player_1_score': 4,
+			'player_2_score': 13,
+			'winner_id': self.user_2.id,
+			'duration': '10806'
+		}
+
+		url = reverse('game_history')
+
+		print("data send to : ", url)
+		print("data send : ", gameHistory)
+		# send a GameHistory
+		response = self.client.post(url, gameHistory, format='json')
+		print(response.data)
+		self.assertEqual(response.status_code, status.HTTP_201_CREATED)
+
+		# get stats
+		url = reverse('stats')
+		print("data send to : ", url)
+		response = self.client.get(url)
+		print(response.data)
+		self.assertEqual(response.status_code, status.HTTP_200_OK)
+	

stat/user_statistics/stat_management/urls.py

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+from django.urls import path
+from .views import GameHistoryView, AddGameHistoryView, StatsView
+
+urlpatterns = [
+    path('game-history/<str:username>/', GameHistoryView.as_view(), name='game_history'),
+    path('game-history/', AddGameHistoryView.as_view(), name='add_game_history'),
+	path('stats/<str:username>/', StatsView.as_view(), name='stats'),
+]

stat/user_statistics/stat_management/views.py

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+from rest_framework.views import APIView
+from rest_framework.permissions import IsAuthenticated
+from .models import GameHistory, Stats
+from .serializers import GameHistorySerializer, StatsSerializer
+from rest_framework.response import Response
+from rest_framework import status
+from django.db.models import Q
+from django.shortcuts import get_object_or_404
+
+class AddGameHistoryView(APIView):
+	permission_classes = [IsAuthenticated]
+
+	def post(self, request):
+		serializer = GameHistorySerializer(data=request.data)
+		if serializer.is_valid():
+			serializer.save()
+			print("serilizer post: ",serializer.data)
+			return Response(serializer.data, status=status.HTTP_201_CREATED)
+		return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
+
+class GameHistoryView(APIView):
+	permission_classes = [IsAuthenticated]
+
+	def get(self, request, username):
+		try:
+			user = username
+			games = GameHistory.objects.filter(Q(player_1_id=user) | Q(player_2_id=user)).order_by('-date_played')[:10]
+			serializer = GameHistorySerializer(games, many=True)
+			print("serilizer get: ",serializer.data)
+			return Response(serializer.data, status=status.HTTP_200_OK)
+		except Exception as e:
+			return Response(
+				{'message': f"{type(e).__name__}: {str(e)}"},
+				status=status.HTTP_404_NOT_FOUND
+			)
+
+class StatsView(APIView):
+	permission_classes = [IsAuthenticated]
+
+	def get(self, request, username):
+		try:
+			user = username
+			stats = Stats.objects.filter(player_id=user).first()
+			if stats is None:
+				return Response([], status=status.HTTP_200_OK)
+			serializer = StatsSerializer(stats)
+			return Response(serializer.data, status=status.HTTP_200_OK)
+		except Exception as e:
+			return Response(
+				{'message': f"{type(e).__name__}: {str(e)}"},
+				status=status.HTTP_404_NOT_FOUND
+			)