from rest_framework.views import APIView
from rest_framework.response import Response
from rest_framework import status
from rest_framework.permissions import IsAuthenticated
from .serializers import ChangeEmailSerializer
from drf_yasg.utils import swagger_auto_schema
from drf_yasg import openapi
from django.conf import settings
from django.shortcuts import get_object_or_404
from django.contrib.auth import get_user_model
from .serializers import CustomUserDetailsSerializer as PublicUserSerializer

User = get_user_model()

class ChangeEmailView(APIView):
    permission_classes = [IsAuthenticated]

    @swagger_auto_schema(
        request_body=ChangeEmailSerializer,
        responses={
            200: openapi.Response('Email successfully changed'),
            400: 'Bad Request'
        },
        operation_description="Change the email address for the authenticated user."
    )
    def post(self, request):
        serializer = ChangeEmailSerializer(data=request.data, context={'request': request})
        if serializer.is_valid():
            user = request.user
            new_email = serializer.validated_data['new_email']
            user.email = new_email
            # remove all other email addresses for the user
            user.emailaddress_set.exclude(email=new_email).delete()
            user.emailaddress_set.create(email=new_email, primary=True, verified=False)
            user.save()
            return Response({"detail": "Email successfully changed."}, status=status.HTTP_200_OK)
        return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)

class IsRegistrationDisabled(APIView):
    @swagger_auto_schema(
        responses={
            200: openapi.Response('Registration is disabled'),
            400: 'Bad Request'
        },
        operation_description="Check if registration is disabled."
    )
    def get(self, request):
        return Response({"is_disabled": settings.DISABLE_REGISTRATION, "message": settings.DISABLE_REGISTRATION_MESSAGE}, status=status.HTTP_200_OK)

class PublicUserListView(APIView):
    # Allow the listing of all public users
    permission_classes = []

    @swagger_auto_schema(
        responses={
            200: openapi.Response('List of public users'),
            400: 'Bad Request'
        },
        operation_description="List public users."
    )
    def get(self, request):
        users = User.objects.filter(public_profile=True).exclude(id=request.user.id)
        # remove the email addresses from the response
        for user in users:
            user.email = None
        serializer = PublicUserSerializer(users, many=True)
        return Response(serializer.data, status=status.HTTP_200_OK)

class PublicUserDetailView(APIView):
    # Allow the retrieval of a single public user
    permission_classes = []

    @swagger_auto_schema(
        responses={
            200: openapi.Response('Public user information'),
            400: 'Bad Request'
        },
        operation_description="Get public user information."
    )
    def get(self, request, user_id):
        user = get_object_or_404(User, uuid=user_id, public_profile=True)
        # remove the email address from the response
        user.email = None
        serializer = PublicUserSerializer(user)
        return Response(serializer.data, status=status.HTTP_200_OK)