from django.contrib.auth import get_user_model
from django.shortcuts import get_object_or_404
from django_core.mixins import BaseViewSetMixin
from drf_spectacular.utils import extend_schema
from rest_framework import generics, filters
from rest_framework.permissions import IsAuthenticated
from rest_framework.response import Response
from rest_framework.views import APIView
from rest_framework.viewsets import ModelViewSet

from core.apps.accounts.choices.user import RoleChoice
from core.apps.accounts.models import Role
from core.apps.accounts.serializers.permission import RoleListSerializer
from core.apps.accounts.serializers.user import UserSerializer, AdminUserSerializer, UserCreateSerializer

User = get_user_model()


@extend_schema(tags=['User'])
class UserListApiView(generics.ListAPIView):
    queryset = User.objects.filter(role=RoleChoice.USER)
    serializer_class = UserSerializer
    permission_classes = [IsAuthenticated]
    filter_backends = [filters.SearchFilter]
    search_fields = ['phone', 'first_name', 'last_name']

    def serializer_context(self):
        return self.serializer_class(context={"request": self.request})


@extend_schema(tags=['User'])
class AdminUserListApiView(generics.ListAPIView):
    queryset = User.objects.exclude(role=RoleChoice.USER)
    serializer_class = UserSerializer
    permission_classes = [IsAuthenticated]
    filter_backends = [filters.SearchFilter]
    search_fields = ['phone', 'first_name', 'last_name']


@extend_schema(tags=["User"], request=AdminUserSerializer)
class AdminUserView(BaseViewSetMixin, ModelViewSet):
    queryset = User.objects.filter(role=RoleChoice.USER)
    serializer_class = AdminUserSerializer
    permission_classes = [IsAuthenticated]
    filter_backends = [filters.SearchFilter]
    search_fields = ['phone', 'first_name', 'last_name']

    def serializer_context(self):
        return self.serializer_class(context={"request": self.request})


@extend_schema(tags=['User'],
               responses={200: UserSerializer},
               request=UserCreateSerializer)
class AdminCreateAPIView(APIView):
    permission_classes = [IsAuthenticated]

    def post(self, request):
        if request.user.role not in (RoleChoice.SUPERUSER, RoleChoice.ADMIN):
            return Response({'detail': 'Forbidden'}, status=403)

        serializer = UserCreateSerializer(data=request.data)
        serializer.is_valid(raise_exception=True)
        serializer.save()

        return Response(serializer.data, status=201)


@extend_schema(tags=['User'], )
class AdminUpdateAPIView(generics.GenericAPIView):
    permission_classes = [IsAuthenticated]
    serializer_class = UserCreateSerializer

    def put(self, request, pk):
        if request.user.role not in (RoleChoice.SUPERUSER, RoleChoice.ADMIN):
            return Response({'detail': 'Forbidden'}, status=403)

        user = get_object_or_404(User, pk=pk)
        serializer = UserCreateSerializer(user, data=request.data)
        serializer.is_valid(raise_exception=True)
        serializer.save()

        return Response(serializer.data, status=200)


class DeleteAdminUserApiView(APIView):
    permission_classes = [IsAuthenticated]

    def delete(self, request, pk):
        if request.user.role != RoleChoice.SUPERUSER:
            return Response({'detail': 'Forbidden'}, status=403)

        user = get_object_or_404(User, pk=pk)
        if user.role != RoleChoice.ADMIN:
            return Response({'detail': 'This user is not an admin'}, status=400)
        user.delete()

        return Response(status=204)


class UserDetailAPIView(generics.RetrieveAPIView):
    permission_classes = [IsAuthenticated]
    serializer_class = UserSerializer
    lookup_field = 'id'


class AdminPermissionsAPIView(generics.GenericAPIView):
    permission_classes = [IsAuthenticated]
    queryset = User.objects.all()

    def get(self, request):
        if request.user.role.name != RoleChoice.ADMIN:
            return Response({'detail': 'Forbidden'}, status=403)

        admin_role = Role.objects.get(name=RoleChoice.ADMIN)

        serializer = RoleListSerializer(admin_role)
        return Response(serializer.data)