Added Solution

db/migrations/0001_initial.py

@@ -1,44 +1,58 @@
-# Generated by Django 4.0.2 on 2022-08-19 07:39
+# Generated by Django 4.0.2 on 2023-10-29 16:58
 
 from django.db import migrations, models
+import django.db.models.deletion
 
 
 class Migration(migrations.Migration):
 
     initial = True
 
-    dependencies = []
+    dependencies = [
+    ]
 
     operations = [
         migrations.CreateModel(
-            name="Actor",
+            name='Actor',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('first_name', models.CharField(max_length=255)),
+                ('last_name', models.CharField(max_length=255)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='CinemaHall',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=255)),
+                ('rows', models.IntegerField()),
+                ('seats_in_row', models.IntegerField()),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Genre',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(max_length=255, unique=True)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Movie',
             fields=[
-                (
-                    "id",
-                    models.AutoField(
-                        auto_created=True,
-                        primary_key=True,
-                        serialize=False,
-                        verbose_name="ID",
-                    ),
-                ),
-                ("first_name", models.CharField(max_length=255)),
-                ("last_name", models.CharField(max_length=255)),
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('title', models.CharField(max_length=255)),
+                ('description', models.TextField()),
+                ('actors', models.ManyToManyField(to='db.Actor')),
+                ('genres', models.ManyToManyField(to='db.Genre')),
             ],
         ),
         migrations.CreateModel(
-            name="Genre",
+            name='MovieSession',
             fields=[
-                (
-                    "id",
-                    models.AutoField(
-                        auto_created=True,
-                        primary_key=True,
-                        serialize=False,
-                        verbose_name="ID",
-                    ),
-                ),
-                ("name", models.CharField(max_length=255, unique=True)),
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('show_time', models.DateTimeField()),
+                ('cinema', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='db.cinemahall')),
+                ('movie', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='db.movie')),
             ],
         ),
     ]

db/migrations/0002_rename_cinema_moviesession_cinema_hall.py

@@ -0,0 +1,18 @@
+# Generated by Django 4.0.2 on 2023-10-29 17:00
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('db', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.RenameField(
+            model_name='moviesession',
+            old_name='cinema',
+            new_name='cinema_hall',
+        ),
+    ]

db/models.py

@@ -14,3 +14,35 @@ class Actor(models.Model):
 
     def __str__(self) -> str:
         return f"{self.first_name} {self.last_name}"
+
+
+class Movie(models.Model):
+    title = models.CharField(max_length=255)
+    description = models.TextField()
+    actors = models.ManyToManyField(Actor)
+    genres = models.ManyToManyField(Genre)
+
+    def __str__(self) -> str:
+        return (f"{self.title}")
+
+
+class CinemaHall(models.Model):
+    name = models.CharField(max_length=255)
+    rows = models.IntegerField()
+    seats_in_row = models.IntegerField()
+
+    @property
+    def capacity(self) -> int:
+        return self.rows * self.seats_in_row
+
+    def __str__(self) -> str:
+        return (f"{self.name}")
+
+
+class MovieSession(models.Model):
+    show_time = models.DateTimeField()
+    cinema_hall = models.ForeignKey(CinemaHall, on_delete=models.CASCADE)
+    movie = models.ForeignKey(Movie, on_delete=models.CASCADE)
+
+    def __str__(self) -> str:
+        return f"{self.movie.title} {self.show_time}"

services/cinema_hall.py

@@ -0,0 +1,18 @@
+from django.db.models import QuerySet
+
+from db.models import CinemaHall
+
+
+def get_cinema_halls() -> QuerySet[CinemaHall]:
+    return CinemaHall.objects.all()
+
+
+def create_cinema_hall(hall_name: str,
+                       hall_rows: int,
+                       hall_seats_in_row: int
+                       ) -> CinemaHall:
+    CinemaHall.objects.create(
+        name=hall_name,
+        rows=hall_rows,
+        seats_in_row=hall_seats_in_row
+    )

services/movie.py

@@ -0,0 +1,40 @@
+from django.db.models import QuerySet
+
+from db.models import Movie
+
+
+def get_movies(
+        genres_ids: list[int] = None,
+        actors_ids: list[int] = None
+) -> QuerySet[Movie]:
+    queryset = Movie.objects.all()
+    if genres_ids is not None and actors_ids is not None:
+        return queryset.filter(
+            genres__id__in=genres_ids
+        ).filter(actors__id__in=actors_ids)
+    if genres_ids is not None:
+        return queryset.filter(genres__id__in=genres_ids)
+    if actors_ids is not None:
+        return queryset.filter(actors__id__in=actors_ids)
+
+    return queryset
+
+
+def get_movie_by_id(movie_id: int) -> QuerySet[Movie]:
+    return Movie.objects.get(id=movie_id)
+
+
+def create_movie(movie_title: str,
+                 movie_description: str,
+                 genres_ids: list[int] = None,
+                 actors_ids: list[int] = None
+                 ) -> QuerySet[Movie]:
+    create_movie = Movie.objects.create(
+        title=movie_title,
+        description=movie_description
+    )
+    if genres_ids is not None:
+        create_movie.genres.set(genres_ids)
+    if actors_ids is not None:
+        create_movie.actors.set(actors_ids)
+    return create_movie

services/movie_session.py

@@ -0,0 +1,47 @@
+from datetime import datetime
+
+from db.models import MovieSession
+
+
+def create_movie_session(
+        movie_show_time: datetime,
+        movie_id: int,
+        cinema_hall_id: int
+) -> None:
+    MovieSession.objects.create(
+        show_time=movie_show_time,
+        movie_id=movie_id,
+        cinema_hall_id=cinema_hall_id
+    )
+
+
+def get_movies_sessions(session_date: datetime = None) -> MovieSession:
+    movie_sessions = MovieSession.objects.all()
+    if session_date:
+        return movie_sessions.filter(show_time__date=session_date)
+    return movie_sessions
+
+
+def get_movie_session_by_id(movie_session_id: int) -> MovieSession:
+    return MovieSession.objects.get(id=movie_session_id)
+
+
+def update_movie_session(
+        session_id: int,
+        show_time: datetime = None,
+        movie_id: int = None,
+        cinema_hall_id: int = None
+) -> None:
+    movie_session = get_movie_session_by_id(session_id)
+    if show_time:
+        movie_session.show_time = show_time
+    if movie_id:
+        movie_session.movie_id = movie_id
+    if cinema_hall_id:
+        movie_session.cinema_hall_id = cinema_hall_id
+
+    movie_session.save()
+
+
+def delete_movie_session_by_id(session_id: int) -> None:
+    get_movie_session_by_id(session_id).delete()

settings.py

@@ -21,6 +21,6 @@
 
 USE_I18N = True
 
-USE_TZ = False
+USE_TZ = True
 
 INSTALLED_APPS = ("db",)