from rest_framework import permissions
from rest_framework.parsers import MultiPartParser, FormParser
from rest_framework import permissions, status
from rest_framework import viewsets
from rest_framework.response import Response

from django.http import HttpRequest
from django.db.models import QuerySet

from .serializers import ProfileSerializer
from .models import ProfileModel

class ProfileViewSet(viewsets.ModelViewSet):
    queryset = ProfileModel.objects.order_by('-pk')
    serializer_class = ProfileSerializer
    parser_classes = (MultiPartParser, FormParser)
    permission_classes = (permissions.IsAuthenticatedOrReadOnly,)

    def retrieve(self, request: HttpRequest, pk=None):
        instance = self.get_object()
        instance.avatar_url.name = instance.avatar_url.name.replace("profiles", "", 1)
        return Response(self.serializer_class(instance).data,
                        status=status.HTTP_200_OK)

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

    def perform_update(self, serializer):
        query: QuerySet = ProfileModel.objects.filter(pk=self.request.user.pk)
        if (not query.exists()):
            return Response("profile not found", status=status.HTTP_400_BAD_REQUEST)
        profile: ProfileModel = ProfileModel.objects.get(pk=self.request.user.pk)
        avatar = self.request.data.get("file", None)
        if (avatar is not None):
            if (profile.avatar_url.name != "default.avif"):
                profile.avatar_url.storage.delete(profile.avatar_url.name)
            profile.avatar_url = avatar
        profile.save()