class Register(APIView):
    serializer_class = CustomUserSerializer
    permission_classes = (AllowAny,)

    def post(self, request, format=None):
        serializer = self.serializer_class(data=request.data)
        if serializer.is_valid():
            serializer.save()
            return Response(serializer.data, status=status.HTTP_201_CREATED)
        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)


class UserList(ListAPIView):
    queryset = CustomUser.objects.all()
    serializer_class = CustomUserSerializer


class UserDetail(RetrieveAPIView):
    queryset = CustomUser.objects.all()
    serializer_class = CustomUserSerializer


class PostList(ListCreateAPIView):
    queryset = Post.objects.all()
    serializer_class = PostSerializer
    permission_classes = (IsAuthenticated,)

    def perform_create(self, serializer):
        serializer.save(publisher=self.request.user)

    def get_queryset(self):
        user = self.request.user
        return Post.objects.filter(publisher=user.id)


class PostDetail(RetrieveUpdateDestroyAPIView):
    queryset = Post.objects.all()
    serializer_class = PostSerializer
    permission_classes = (IsAuthenticated,)