Solution

.gitignore

@@ -6,3 +6,4 @@
 venv/
 .pytest_cache/
 **__pycache__/
+db.sqlite3

cinema/serializers.py

@@ -1 +1,66 @@
-# write serializers here
+from rest_framework import serializers
+
+from cinema.models import CinemaHall, Genre, Actor, Movie, MovieSession
+
+
+class CinemaHallSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = CinemaHall
+        fields = ("id", "name", "rows", "seats_in_row", "capacity")
+
+
+class GenreSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Genre
+        fields = "__all__"
+
+
+class ActorSerializer(serializers.ModelSerializer):
+    full_name = serializers.SerializerMethodField()
+
+    class Meta:
+        model = Actor
+        fields = ("id", "first_name", "last_name", "full_name")
+
+    def get_full_name(self, obj):
+        return f"{obj.first_name} {obj.last_name}"
+
+
+class MovieSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Movie
+        fields = ("id", "title", "description", "duration", "genres", "actors")
+
+
+class MovieListSerializer(MovieSerializer):
+    actors = serializers.StringRelatedField(many=True)
+    genres = serializers.StringRelatedField(many=True)
+
+
+class MovieRetrieveSerializer(MovieSerializer):
+    genres = GenreSerializer(many=True)
+    actors = ActorSerializer(many=True)
+
+
+class MovieSessionSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = MovieSession
+        fields = ("id", "show_time", "movie", "cinema_hall")
+
+
+class MovieSessionListSerializer(serializers.ModelSerializer):
+    movie_title = serializers.CharField(source="movie.title")
+    cinema_hall_name = serializers.CharField(source="cinema_hall.name")
+    cinema_hall_capacity = (serializers.IntegerField(
+        source="cinema_hall.capacity")
+    )
+
+    class Meta:
+        model = MovieSession
+        fields = ("id", "show_time", "movie_title",
+                  "cinema_hall_name", "cinema_hall_capacity")
+
+
+class MovieSessionRetrieveSerializer(MovieSessionSerializer):
+    movie = MovieListSerializer()
+    cinema_hall = CinemaHallSerializer()

cinema/urls.py

@@ -1 +1,17 @@
-# write urls here
+from django.urls import path, include
+from rest_framework import routers
+
+from cinema import views
+
+router = routers.DefaultRouter()
+router.register("cinema_halls", views.CinemaHallViewSet)
+router.register("genres", views.GenreViewSet)
+router.register("actors", views.ActorViewSet)
+router.register("movies", views.MovieViewSet)
+router.register("movie_sessions", views.MovieSessionViewSet)
+
+urlpatterns = [
+    path("", include(router.urls)),
+]
+
+app_name = "cinema"

cinema/views.py

@@ -1 +1,63 @@
-# write views here
+from rest_framework import viewsets
+
+from cinema.models import CinemaHall, Genre, Actor, Movie, MovieSession
+from cinema.serializers import (CinemaHallSerializer,
+                                GenreSerializer,
+                                ActorSerializer,
+                                MovieSerializer,
+                                MovieSessionSerializer,
+                                MovieListSerializer,
+                                MovieRetrieveSerializer,
+                                MovieSessionListSerializer,
+                                MovieSessionRetrieveSerializer)
+
+
+class CinemaHallViewSet(viewsets.ModelViewSet):
+    queryset = CinemaHall.objects.all()
+    serializer_class = CinemaHallSerializer
+
+
+class GenreViewSet(viewsets.ModelViewSet):
+    queryset = Genre.objects.all()
+    serializer_class = GenreSerializer
+
+
+class ActorViewSet(viewsets.ModelViewSet):
+    queryset = Actor.objects.all()
+    serializer_class = ActorSerializer
+
+
+class MovieViewSet(viewsets.ModelViewSet):
+    queryset = Movie.objects.all().prefetch_related("genres", "actors")
+    serializer_class = MovieSerializer
+
+    def get_serializer_class(self):
+        if self.action == "list":
+            return MovieListSerializer
+        elif self.action == "retrieve":
+            return MovieRetrieveSerializer
+        return MovieSerializer
+
+    def get_queryset(self):
+        queryset = self.queryset
+        if self.action in ("list", "retrieve"):
+            return queryset.prefetch_related("genres", "actors")
+        return queryset
+
+
+class MovieSessionViewSet(viewsets.ModelViewSet):
+    queryset = MovieSession.objects.all()
+    serializer_class = MovieSessionSerializer
+
+    def get_serializer_class(self):
+        if self.action == "list":
+            return MovieSessionListSerializer
+        if self.action == "retrieve":
+            return MovieSessionRetrieveSerializer
+        return MovieSessionSerializer
+
+    def get_queryset(self):
+        queryset = self.queryset
+        if self.action in ("list", "retrieve"):
+            return queryset.select_related("movie", "cinema_hall")
+        return queryset

cinema_service/settings.py

@@ -12,6 +12,8 @@
 
 from pathlib import Path
 
+from decouple import config
+
 # Build paths inside the project like this: BASE_DIR / 'subdir'.
 BASE_DIR = Path(__file__).resolve().parent.parent
 
@@ -20,12 +22,10 @@
 # See https://docs.djangoproject.com/en/4.0/howto/deployment/checklist/
 
 # SECURITY WARNING: keep the secret key used in production secret!
-SECRET_KEY = (
-    "django-insecure-6vubhk2$++agnctay_4pxy_8cq)mosmn(*-#2b^v4cgsh-^!i3"
-)
+SECRET_KEY = config("SECRET_KEY")
 
 # SECURITY WARNING: don't run with debug turned on in production!
-DEBUG = True
+DEBUG = False
 
 ALLOWED_HOSTS = []
 
@@ -42,6 +42,7 @@
     "rest_framework",
     "cinema",
     "user",
+    "debug_toolbar",
 ]
 
 MIDDLEWARE = [
@@ -52,6 +53,7 @@
     "django.contrib.auth.middleware.AuthenticationMiddleware",
     "django.contrib.messages.middleware.MessageMiddleware",
     "django.middleware.clickjacking.XFrameOptionsMiddleware",
+    "debug_toolbar.middleware.DebugToolbarMiddleware",
 ]
 
 ROOT_URLCONF = "cinema_service.urls"
@@ -131,3 +133,8 @@
 # https://docs.djangoproject.com/en/4.0/ref/settings/#default-auto-field
 
 DEFAULT_AUTO_FIELD = "django.db.models.BigAutoField"
+
+
+INTERNAL_IPS = [
+    "127.0.0.1",
+]

cinema_service/urls.py

@@ -1,6 +1,8 @@
+from debug_toolbar.toolbar import debug_toolbar_urls
 from django.contrib import admin
-from django.urls import path
+from django.urls import path, include
 
 urlpatterns = [
     path("admin/", admin.site.urls),
+    path("api/cinema/", include("cinema.urls", namespace="cinema")),
 ]

requirements.txt

@@ -1,6 +1,14 @@
+asgiref==3.8.1
 Django==4.0.4
+django-debug-toolbar==3.2.1
 djangorestframework==3.13.1
 flake8==5.0.4
 flake8-quotes==3.3.1
 flake8-variables-names==0.0.5
-pep8-naming==0.13.2
+mccabe==0.7.0
+pep8-naming==0.13.2
+pycodestyle==2.9.1
+pyflakes==2.5.0
+python-decouple==3.8
+pytz==2024.2
+sqlparse==0.5.3