"""
notifications views file
"""
# django imports
from django.db.models import Q
from rest_framework.decorators import action
from rest_framework.permissions import IsAuthenticated
from rest_framework.response import Response
from rest_framework import viewsets, status, views
# local imports
from account.utils import custom_response, custom_error_response
from base.messages import SUCCESS_CODE, ERROR_CODE
from notifications.constants import TEST_NOTIFICATION
from notifications.serializers import RegisterDevice, NotificationListSerailizer, ReadNotificationSerializer
from notifications.utils import send_notification
from notifications.models import Notification

class NotificationViewSet(viewsets.GenericViewSet):
    """ used to do the notification actions """
    serializer_class = RegisterDevice
    permission_classes = [IsAuthenticated, ]

    @action(methods=['post'], detail=False, url_path='device', url_name='device', serializer_class=RegisterDevice)
    def fcm_registration(self, request):
        """
        used to save the fcm token
        """
        serializer = self.get_serializer_class()(data=request.data,
                                                 context={'user_id': request.auth.payload['user_id']})
        serializer.is_valid(raise_exception=True)
        serializer.save()
        return custom_response(SUCCESS_CODE["3000"])

    @action(methods=['get'], detail=False, url_path='test', url_name='test')
    def send_test_notification(self, request):
        """
        to send test notification
        :return:
        """
        send_notification.delay(TEST_NOTIFICATION, None, request.auth.payload['user_id'], {})
        return custom_response(SUCCESS_CODE["3000"])

    @action(methods=['get'], detail=False, url_path='list', url_name='list',
            serializer_class=NotificationListSerailizer)
    def notification_list(self, request):
        """
        notification list
        """
        try:
            queryset = Notification.objects.filter(notification_to=request.user)
            serializer = NotificationListSerailizer(queryset, many=True)
            return custom_response(None, serializer.data, response_status=status.HTTP_200_OK)
        except Exception as e:
            return custom_error_response(str(e), response_status=status.HTTP_400_BAD_REQUEST)


class ReadNotification(views.APIView):
    """Update notification API"""
    serializer_class = ReadNotificationSerializer
    model = Notification
    permission_classes = [IsAuthenticated]

    def put(self, request, format=None):
        try:
            notification_id = str(self.request.data.get('notification_id'))
            notification_queryset = Notification.objects.filter(id=notification_id, notification_to=self.request.user).last()
            if notification_queryset:
                # use ReadNotificationSerializer serializer
                serializer = ReadNotificationSerializer(notification_queryset, data=request.data, partial=True)
                if serializer.is_valid():
                    # save serializer
                    serializer.save()
                    return custom_response(SUCCESS_CODE['3039'], response_status=status.HTTP_200_OK)
                return custom_error_response(serializer.errors, response_status=status.HTTP_400_BAD_REQUEST)
        except Exception as e:
            return custom_error_response(str(e), response_status=status.HTTP_400_BAD_REQUEST)