from rest_framework.views import APIView
from rest_framework.response import Response
from rest_framework import status
from rest_framework.pagination import PageNumberPagination
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.permissions import IsAuthenticated
from company_services.models.company import Companies
from company_services.serializers.company_serializer import CompanySerializer
from common.pagination.custom_pagination import CustomPageNumberPagination
from common.exceptions.exceptions import custom_exception_handler

from rest_framework.parsers import MultiPartParser, FormParser


class CompanyListCreateAPIView(APIView):
    parser_classes = [MultiPartParser, FormParser]
    permission_classes = [IsAuthenticated]

    @swagger_auto_schema(request_body=CompanySerializer)
    def post(self, request):
        serializer = CompanySerializer(data=request.data, context={'request': request})
        serializer.is_valid(raise_exception=True)
        serializer.save(created_by=request.user)
        return Response({"success": "Company created successfully"}, status=status.HTTP_201_CREATED)
    
    def get(self, request):
        companies = Companies.objects.filter(is_active=True).select_related('created_by')
        
        user = request.user
        if user.role == 'admin':
            pass
        else:
            companies = companies.filter(created_by=user)
        
        paginator = CustomPageNumberPagination()
        result_page = paginator.paginate_queryset(companies, request)
        serializer = CompanySerializer(result_page, many=True, context={'request': request})
        return paginator.get_paginated_response(serializer.data)
    



class CompanyDetailAPIView(APIView):
    parser_classes = [MultiPartParser, FormParser]

    @swagger_auto_schema(request_body=CompanySerializer(partial=True))
    def patch(self, request, pk):
        service = get_object_or_404(Companies, pk=pk)
        serializer = CompanySerializer(service, data=request.data, partial=True, context={'request': request})
        serializer.is_valid(raise_exception=True)
        serializer.save()
        return Response({"success": "Company updated successfully"}, status=status.HTTP_200_OK)

    def get(self, request, pk):
        service = get_object_or_404(Companies, pk=pk)
        serializer = CompanySerializer(service, context={'request': request})
        return Response(serializer.data)

    def delete(self, request, pk):
        service = get_object_or_404(Companies, pk=pk)
        service.soft_delete()
        return Response({"success": "Company deleted successfully"}, status=status.HTTP_200_OK)