from rest_framework import viewsets, status
from rest_framework.decorators import action
from rest_framework.permissions import IsAuthenticated
from rest_framework.response import Response
from django.db.models import Q
from adventures.models import Adventure, AdventureImage
from adventures.serializers import AdventureImageSerializer
import uuid

class AdventureImageViewSet(viewsets.ModelViewSet):
    serializer_class = AdventureImageSerializer
    permission_classes = [IsAuthenticated]

    @action(detail=True, methods=['post'])
    def image_delete(self, request, *args, **kwargs):
        return self.destroy(request, *args, **kwargs)
    
    @action(detail=True, methods=['post'])
    def toggle_primary(self, request, *args, **kwargs):
        # Makes the image the primary image for the adventure, if there is already a primary image linked to the adventure, it is set to false and the new image is set to true. make sure that the permission is set to the owner of the adventure
        if not request.user.is_authenticated:
            return Response({"error": "User is not authenticated"}, status=status.HTTP_401_UNAUTHORIZED)
        
        instance = self.get_object()
        adventure = instance.adventure
        if adventure.user_id != request.user:
            return Response({"error": "User does not own this adventure"}, status=status.HTTP_403_FORBIDDEN)
        
        # Check if the image is already the primary image
        if instance.is_primary:
            return Response({"error": "Image is already the primary image"}, status=status.HTTP_400_BAD_REQUEST)
        
        # Set the current primary image to false
        AdventureImage.objects.filter(adventure=adventure, is_primary=True).update(is_primary=False)

        # Set the new image to true
        instance.is_primary = True
        instance.save()
        return Response({"success": "Image set as primary image"})

    def create(self, request, *args, **kwargs):
        if not request.user.is_authenticated:
            return Response({"error": "User is not authenticated"}, status=status.HTTP_401_UNAUTHORIZED)
        adventure_id = request.data.get('adventure')
        try:
            adventure = Adventure.objects.get(id=adventure_id)
        except Adventure.DoesNotExist:
            return Response({"error": "Adventure not found"}, status=status.HTTP_404_NOT_FOUND)
        
        if adventure.user_id != request.user:
            # Check if the adventure has a collection
            if adventure.collection:
                # Check if the user is in the collection's shared_with list
                if not adventure.collection.shared_with.filter(id=request.user.id).exists():
                    return Response({"error": "User does not have permission to access this adventure"}, status=status.HTTP_403_FORBIDDEN)
            else:
                return Response({"error": "User does not own this adventure"}, status=status.HTTP_403_FORBIDDEN)
        
        return super().create(request, *args, **kwargs)
    
    def update(self, request, *args, **kwargs):
        if not request.user.is_authenticated:
            return Response({"error": "User is not authenticated"}, status=status.HTTP_401_UNAUTHORIZED)
        
        adventure_id = request.data.get('adventure')
        try:
            adventure = Adventure.objects.get(id=adventure_id)
        except Adventure.DoesNotExist:
            return Response({"error": "Adventure not found"}, status=status.HTTP_404_NOT_FOUND)
        
        if adventure.user_id != request.user:
            return Response({"error": "User does not own this adventure"}, status=status.HTTP_403_FORBIDDEN)
        
        return super().update(request, *args, **kwargs)
    
    def perform_destroy(self, instance):
        print("perform_destroy")
        return super().perform_destroy(instance)

    def destroy(self, request, *args, **kwargs):
        print("destroy")
        if not request.user.is_authenticated:
            return Response({"error": "User is not authenticated"}, status=status.HTTP_401_UNAUTHORIZED)
        
        instance = self.get_object()
        adventure = instance.adventure
        if adventure.user_id != request.user:
            return Response({"error": "User does not own this adventure"}, status=status.HTTP_403_FORBIDDEN)
        
        return super().destroy(request, *args, **kwargs)
    
    def partial_update(self, request, *args, **kwargs):
        if not request.user.is_authenticated:
            return Response({"error": "User is not authenticated"}, status=status.HTTP_401_UNAUTHORIZED)
        
        instance = self.get_object()
        adventure = instance.adventure
        if adventure.user_id != request.user:
            return Response({"error": "User does not own this adventure"}, status=status.HTTP_403_FORBIDDEN)
        
        return super().partial_update(request, *args, **kwargs)
    
    @action(detail=False, methods=['GET'], url_path='(?P<adventure_id>[0-9a-f-]+)')
    def adventure_images(self, request, adventure_id=None, *args, **kwargs):
        if not request.user.is_authenticated:
            return Response({"error": "User is not authenticated"}, status=status.HTTP_401_UNAUTHORIZED)
        
        try:
            adventure_uuid = uuid.UUID(adventure_id)
        except ValueError:
            return Response({"error": "Invalid adventure ID"}, status=status.HTTP_400_BAD_REQUEST)
        
        queryset = AdventureImage.objects.filter(
            Q(adventure__id=adventure_uuid) & Q(user_id=request.user)
        )
        
        serializer = self.get_serializer(queryset, many=True, context={'request': request})
        return Response(serializer.data)

    def get_queryset(self):
        return AdventureImage.objects.filter(user_id=self.request.user)

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