Develop

cinema/permissions.py

@@ -0,0 +1,21 @@
+from rest_framework.permissions import BasePermission, SAFE_METHODS
+
+
+class IsAdminOrIfAuthenticatedReadOnly(BasePermission):
+    """
+      Custom permission class that grants
+      different levels of access based on user role.
+
+      - Full access is granted if the user is an admin.
+      - Read-only access is granted if the
+      user is authenticated but not an admin.
+    """
+
+    def has_permission(self, request, view):
+        return bool(
+            request.method in SAFE_METHODS
+            and request.user
+            and request.user.is_authenticated
+        ) or (
+            request.user and request.user.is_staff
+        )

cinema/views.py

@@ -2,9 +2,14 @@
 
 from django.db.models import F, Count
 from rest_framework import viewsets
+from rest_framework.authentication import TokenAuthentication
 from rest_framework.pagination import PageNumberPagination
+from rest_framework.permissions import IsAdminUser, IsAuthenticated
 
 from cinema.models import Genre, Actor, CinemaHall, Movie, MovieSession, Order
+from cinema.permissions import (
+    IsAdminOrIfAuthenticatedReadOnly
+)
 
 from cinema.serializers import (
     GenreSerializer,
@@ -24,21 +29,29 @@
 class GenreViewSet(viewsets.ModelViewSet):
     queryset = Genre.objects.all()
     serializer_class = GenreSerializer
+    authentication_classes = (TokenAuthentication,)
+    permission_classes = (IsAdminOrIfAuthenticatedReadOnly, IsAuthenticated)
 
 
 class ActorViewSet(viewsets.ModelViewSet):
     queryset = Actor.objects.all()
     serializer_class = ActorSerializer
+    authentication_classes = (TokenAuthentication,)
+    permission_classes = (IsAdminOrIfAuthenticatedReadOnly,)
 
 
 class CinemaHallViewSet(viewsets.ModelViewSet):
     queryset = CinemaHall.objects.all()
     serializer_class = CinemaHallSerializer
+    authentication_classes = (TokenAuthentication,)
+    permission_classes = (IsAdminOrIfAuthenticatedReadOnly,)
 
 
 class MovieViewSet(viewsets.ModelViewSet):
     queryset = Movie.objects.prefetch_related("genres", "actors")
     serializer_class = MovieSerializer
+    authentication_classes = (TokenAuthentication,)
+    permission_classes = (IsAdminOrIfAuthenticatedReadOnly,)
 
     @staticmethod
     def _params_to_ints(qs):
@@ -87,6 +100,8 @@ class MovieSessionViewSet(viewsets.ModelViewSet):
         )
     )
     serializer_class = MovieSessionSerializer
+    authentication_classes = (TokenAuthentication,)
+    permission_classes = (IsAdminOrIfAuthenticatedReadOnly,)
 
     def get_queryset(self):
         date = self.request.query_params.get("date")
@@ -124,6 +139,8 @@ class OrderViewSet(viewsets.ModelViewSet):
     )
     serializer_class = OrderSerializer
     pagination_class = OrderPagination
+    authentication_classes = (TokenAuthentication,)
+    permission_classes = (IsAdminOrIfAuthenticatedReadOnly,)
 
     def get_queryset(self):
         return Order.objects.filter(user=self.request.user)

cinema_service/urls.py

@@ -4,5 +4,6 @@
 urlpatterns = [
     path("admin/", admin.site.urls),
     path("api/cinema/", include("cinema.urls", namespace="cinema")),
+    path("api/user/", include("user.urls", namespace="user")),
     path("__debug__/", include("debug_toolbar.urls")),
 ]

user/serializers.py

@@ -1 +1,27 @@
-# write your code here
+from django.contrib.auth import get_user_model
+from rest_framework import serializers
+
+
+class UserSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = get_user_model()
+        fields = ("id", "username", "email", "password", "is_staff")
+        read_only_fields = ("id", "is_staff")
+        extra_kwargs = {
+            "password": {"write_only": True, "min_length": 5}
+        }
+
+    def create(self, validated_data):
+        """create user with encrypted password"""
+        return get_user_model().objects.create_user(**validated_data)
+
+    def update(self, instance, validated_data):
+        """Update User with encrypted password"""
+        password = validated_data.pop("password", None)
+        user = super().update(instance, validated_data)
+
+        if password:
+            user.set_password(password)
+            user.save()
+
+        return user

user/urls.py

@@ -1 +1,14 @@
-# write your code here
+from django.urls import path
+
+
+from user.views import CreateUserView, LoginUserView, ManagerUserView
+from rest_framework.authtoken import views
+
+
+app_name = "user"
+
+urlpatterns = [
+    path("register/", CreateUserView.as_view(), name="create"),
+    path("login/", LoginUserView.as_view(), name="login"),
+    path("me/", ManagerUserView.as_view(), name="manage"),
+]

user/views.py

@@ -1 +1,24 @@
-# write your code here
+from rest_framework import generics
+from rest_framework.authentication import TokenAuthentication
+from rest_framework.authtoken.views import ObtainAuthToken
+from rest_framework.permissions import IsAuthenticated
+from rest_framework.settings import api_settings
+
+from user.serializers import UserSerializer
+
+
+class CreateUserView(generics.CreateAPIView):
+    serializer_class = UserSerializer
+
+
+class LoginUserView(ObtainAuthToken):
+    renderer_classes = api_settings.DEFAULT_RENDERER_CLASSES
+
+
+class ManagerUserView(generics.RetrieveUpdateAPIView):
+    serializer_class = UserSerializer
+    authentication_classes = (TokenAuthentication,)
+    permission_classes = (IsAuthenticated,)
+
+    def get_object(self):
+        return self.request.user