import logging

from django.shortcuts import render, get_object_or_404
from django.core.mail import EmailMessage
from django.template.loader import render_to_string

# Create your views here.
from rest_framework import viewsets
from rest_framework.response import Response
from rest_framework.permissions import IsAuthenticatedOrReadOnly, IsAuthenticated
from rest_framework.decorators import api_view, permission_classes, action

from companies.models import Company
from companies.serializers import CompanySerializer

from back_latienda.permissions import IsCreator


class CompanyViewSet(viewsets.ModelViewSet):
      queryset = Company.objects.all()
      serializer_class = CompanySerializer
      permission_classes = [IsAuthenticatedOrReadOnly, IsCreator]

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

      @action(detail=True, methods=['POST', ])
      def email_manager(self, request, **kwargs):
            """
            Send email to company.creator
            """
            try:
                  queryset = self.get_custom_queryset(request)
                  instance = queryset.filter(pk=kwargs['pk']).first()
                  if instance:
                        data = json.loads(request.body)
                        if request.user.is_authenticated:
                              # send email to manager
                              company_message = render_to_string('company_contact.html', {
                                    'company': instance,
                                    'email': request.user.email,
                                    'full_name': request.user.full_name,
                                    'quantity': data['quantity'],
                                    'phone_number': data.get('phone_number'),
                                    'comments': data['comments'],
                                    'product_info': data['product_info'],
                              })
                              user_message = render_to_string('confirm_company_contact.html', {
                                    'company': instance,
                                    'username': request.user.full_name,
                                    'data': data,
                              })
                              # send email to company
                              subject = "Contacto de usuario"
                              email = EmailMessage(subject, company_message, to=[instance.creator.email])
                              email.send()
                              logging.info(f"Email sent to {instance.creator.email} as manager of {instance.name}")
                              # send confirmation email to user
                              subject = 'Confirmación de contacto'
                              email = EmailMessage(subject, message, to=[request.user.email])
                              email.send()
                              logging.info(f"Contact confirmation email sent to {request.user.email}")
                        else:
                              # for unauthenticated users
                              company_message = render_to_string('company_contact.html', {
                                    'company': instance,
                                    'email': data['email'],
                                    'full_name': data['full_name'],
                                    'quantity': data['quantity'],
                                    'phone_number': data.get('phone_number'),
                                    'comments': data['comments'],
                                    'product_info': data['product_info'],
                              })
                              user_message = render_to_string('confirm_company_contact.html', {
                                    'company': instance,
                                    'username': data['full_name'],
                              })
                              # send email to company
                              email = EmailMessage(subject, company_message, to=[instance.creator.email])
                              email.send()
                              logging.info(f"Email sent to {instance.creator.email} as manager of {instance.name}")
                              # send confirmation email to user
                              email = EmailMessage(subject, user_message, to=[data['email']])
                              email.send()
                              logging.info(f"Contact confirmation email sent to anonymous user {data['email']}")
                        # TODO: create statslog instance to rgister interaction

                        return Response(data=data)
                  else:
                        return Response({"errors":{"details": f"No instance of company with id {kwargs['pk']}",}})
            except Exception as e:
                  return Response({"errors":{"details": str(e),}}, status=500)


@api_view(['GET',])
@permission_classes([IsAuthenticated,])
def my_company(request):
      qs = Company.objects.filter(creator=request.user)
      company_serializer = CompanySerializer(qs)
      return Response(data=company_serializer.data)