from rest_framework.response import Response
from rest_framework import status
from rest_framework.exceptions import ValidationError, NotFound
from drf_yasg.utils import swagger_auto_schema
from django.shortcuts import get_object_or_404
from rest_framework.views import APIView

from company_benefits.models.service_benefits import CompanyBenefits
from company_benefits.serializers.service_benefits_serializer import CompanyBenefitsSerializer
from common.pagination.custom_pagination import CustomPageNumberPagination
from common.exceptions.exceptions import custom_exception_handler
from django.db.models import Q
from rest_framework.permissions import IsAuthenticated

class CompanyBenefitsListCreateAPIView(APIView):
    permission_classes = [IsAuthenticated]
    
    @swagger_auto_schema(request_body=CompanyBenefitsSerializer)
    def post(self, request):
        serializer = CompanyBenefitsSerializer(data=request.data, context={'request': request})
        serializer.is_valid(raise_exception=True)
        serializer.save(created_by=request.user)
        return Response({"success": "Service benefits created successfully"}, status=status.HTTP_201_CREATED)
    
    def get(self, request):
        benefits = CompanyBenefits.objects.filter(is_active=True).select_related(
            'company_id',
            'company_id__created_by',
            'created_by'
        )
        
        user = request.user
        if user.role == 'admin':
            pass
        else:
            benefits = benefits.filter(
                Q(created_by=user) |  
                Q(company_id__created_by=user)  
            )
        
        paginator = CustomPageNumberPagination()
        result_page = paginator.paginate_queryset(benefits, request)
        serializer = CompanyBenefitsSerializer(result_page, many=True, context={'request': request})
        return paginator.get_paginated_response(serializer.data)    

class CompanyBenefitsDetailAPIView(APIView):
    @swagger_auto_schema(request_body=CompanyBenefitsSerializer)
    def put(self, request, pk):
        service = get_object_or_404(CompanyBenefits, pk=pk)
        serializer = CompanyBenefitsSerializer(service, data=request.data)
        serializer.is_valid(raise_exception=True)
        serializer.save()
        return Response({"success": "Service Benefits updated successfully"}, status=status.HTTP_200_OK)
    
    def get(self, request, pk):
        service = get_object_or_404(CompanyBenefits, pk=pk)
        serializer = CompanyBenefitsSerializer(service)
        return Response(serializer.data)
    
    def delete(self, request, pk):
        service = get_object_or_404(CompanyBenefits, pk=pk)
        service.soft_delete()
        return Response({"success": "Service Benefits deleted successfully"}, status=status.HTTP_200_OK)