LilSchool/api/v1/views.py

import json
from datetime import datetime
from decimal import Decimal

from django.contrib.auth import get_user_model
from django.db.models import Q
from rest_framework import status, views, viewsets, generics, mixins
from rest_framework.decorators import detail_route, list_route, action, permission_classes, authentication_classes
from rest_framework.response import Response

from . import ExtendedModelViewSet

from .serializers.config import ConfigSerializer
from .serializers.course import (
    CategorySerializer, LikeSerializer,
    CourseSerializer, CourseCreateSerializer,
    CourseBulkChangeCategorySerializer,
    CommentSerializer, CommentCreateSerializer,
    MaterialSerializer, MaterialCreateSerializer,
    LessonSerializer, LessonCreateSerializer,
    LikeCreateSerializer, CourseCommentSerializer, LessonCommentSerializer,
    LiveLessonCommentSerializer,)
from .serializers.content import (
    BanerSerializer,
    ImageSerializer, ImageCreateSerializer,
    TextSerializer, TextCreateSerializer,
    ImageTextSerializer, ImageTextCreateSerializer,
    VideoSerializer, VideoCreateSerializer,
    GallerySerializer,
    GalleryImageSerializer, GalleryImageCreateSerializer,
    ImageObjectSerializer,
)
from .serializers.school import (
    SchoolScheduleSerializer,
    LiveLessonCreateSerializer,
    LiveLessonSerializer,
)
from .serializers.payment import (
    AuthorBalanceSerializer, AuthorBalanceCreateSerializer,
    PaymentSerializer,
    CoursePaymentCreateSerializer, SchoolPaymentCreateSerializer)
from .serializers.user import (
    AuthorRequestSerializer,
    UserSerializer, UserPhotoSerializer,
    UserGallerySerializer, UserGalleryUpdateSerializer)
from .serializers.contest import (
    ContestCreateSerializer, ContestSerializer, ContestWorkSerializer, ContestWorkCreateSerializer
)

from .permissions import (
    IsAdmin,
    IsAuthorOrAdmin, IsAuthorObjectOrAdmin,
    IsTeacherOrAdmin,
)

from apps.course.models import (
    Category, Course,
    Comment, CourseComment, LessonComment,
    Material, Lesson,
    Like,
    LiveLessonComment)
from apps.config.models import Config
from apps.content.models import (
    Baner, Image, Text, ImageText, Video,
    Gallery, GalleryImage, ImageObject,
    Contest, ContestWork)
from apps.payment.models import (
    AuthorBalance, Payment,
    CoursePayment, SchoolPayment,
)
from apps.school.models import SchoolSchedule, LiveLesson
from apps.user.models import AuthorRequest
from project.pusher import pusher
from project.sengrid import get_sendgrid_client

User = get_user_model()


class AuthorBalanceViewSet(ExtendedModelViewSet):
    queryset = AuthorBalance.objects.filter(
        Q(type=1) | Q(payment__status__in=Payment.PW_PAID_STATUSES),
        # author__role__in=[User.AUTHOR_ROLE, User.ADMIN_ROLE, User.TEACHER_ROLE],
    )
    serializer_class = AuthorBalanceCreateSerializer
    serializer_class_map = {
        'list': AuthorBalanceSerializer,
    }
    permission_classes = (IsAdmin,)
    filter_fields = ('author', 'status', 'type')
    search_fields = (
        'author__email',
        'author__first_name',
        'author__last_name',
    )

    def list(self, request, *args, **kwargs):
        queryset = self.filter_queryset(self.get_queryset())

        if request.query_params.get('page'):
            page = self.paginate_queryset(queryset)
            if page is not None:
                serializer = self.get_serializer(page, many=True)
                return self.get_paginated_response(serializer.data)

        serializer = self.get_serializer(queryset, many=True)
        return Response(serializer.data)

    @action(methods=['post'], detail=False, url_path='add-withdrawal')
    def add_withdrawal(self, request):
        author_id = request.data.get('author_id')
        amount = request.data.get('amount')
        card = request.data.get('card')
        if not all([author_id, amount,]):
            return Response(status=status.HTTP_400_BAD_REQUEST)
        AuthorBalance.objects.create(
            author_id=author_id,
            type=AuthorBalance.OUT,
            amount=Decimal(amount),
            status=AuthorBalance.ACCEPTED,
            card=card,
        )
        return Response(status=status.HTTP_200_OK)


class AuthorBalanceUsersViewSet(views.APIView):

    def get(self, request):
        users = AuthorBalance.objects.filter(amount__gt=0).values_list('author', flat=True)
        users = User.objects.filter(id__in=users, is_active=True).order_by('first_name', 'last_name')
        return Response(UserSerializer(users, many=True).data)


class BanerViewSet(ExtendedModelViewSet):
    queryset = Baner.objects.all()
    serializer_class = BanerSerializer
    permission_classes = (IsAdmin,)
    filter_fields = ('use',)
    ordering_fields = ('created_at', 'update_at',)
    search_fields = ('text',)

    def perform_create(self, serializer):
        files = dict()
        for k, v in self.request.FILES.items():
            if v:
                files[k] = v
        serializer.save(**files)

    def perform_update(self, serializer):
        files = dict()
        for k, v in self.request.FILES.items():
            if v:
                files[k] = v
        serializer.save(**files)


class ImageObjectViewSet(ExtendedModelViewSet):
    queryset = ImageObject.objects.all()
    serializer_class = ImageObjectSerializer
    # FIXME
    authentication_classes = []
    # permission_classes = (IsAuthorOrAdmin,)


class MaterialViewSet(ExtendedModelViewSet):
    queryset = Material.objects.all()
    serializer_class = MaterialCreateSerializer
    serializer_class_map = {
        'list': MaterialSerializer,
        'retrieve': MaterialSerializer,
    }
    search_fields = ('title', 'short_description',)
    ordering_fields = ('title', 'created_at', 'update_at',)
    # permission_classes = (IsAdmin,)


class LikeViewSet(ExtendedModelViewSet):
    OBJ_TYPE_CONTEST_WORK = 'contest_work'

    queryset = Like.objects.select_related('user').all()
    serializer_class = LikeCreateSerializer
    serializer_class_map = {
        'list': LikeSerializer,
        'retrieve': LikeSerializer,
    }
    search_fields = ('user__email', 'user__firstname', 'user__lastname',)
    ordering_fields = ('created_at', 'update_at',)
    # permission_classes = (IsAdmin,)
    # FIXME
    authentication_classes = []

    def create(self, request, *args, **kwargs):
        serializer = self.get_serializer(data=request.data)
        serializer.is_valid(raise_exception=True)
        obj_type = request.data.get('obj_type')
        obj_id = request.data.get('obj_id')
        user = serializer.validated_data.get('user')
        if not user.is_active: # FIXME and user.is_authenticated):
            return Response(status=status.HTTP_403_FORBIDDEN)
        if obj_type == self.OBJ_TYPE_CONTEST_WORK:
            contest_work = ContestWork.objects.get(pk=obj_id)
            if contest_work.user == user:
                return Response({'error': u'Нельзя голосовать за свою работу'}, status=status.HTTP_400_BAD_REQUEST)
            if contest_work.likes.filter(user=user).exists():
                return Response({'error': u'Вы уже голосовали за эту работу'}, status=status.HTTP_400_BAD_REQUEST)
            if contest_work.contest.finished:
                return Response({'error': u'Голосование закончено'}, status=status.HTTP_400_BAD_REQUEST)
        instance = serializer.save()
        if obj_type == self.OBJ_TYPE_CONTEST_WORK:
            contest_work.likes.add(instance)
        headers = self.get_success_headers(serializer.data)
        return Response(serializer.data, status=status.HTTP_201_CREATED, headers=headers)


class CategoryViewSet(ExtendedModelViewSet):
    queryset = Category.objects.order_by('-id')
    serializer_class = CategorySerializer
    search_fields = ('title',)
    ordering_fields = ('title',)
    # permission_classes = (IsAdmin,)


class CourseViewSet(ExtendedModelViewSet):
    queryset = Course.objects.select_related(
        'author', 'category', 'cover', 'gallery',
    ).prefetch_related(
        'likes', 'materials', 'content',
    ).all()
    serializer_class = CourseCreateSerializer
    serializer_class_map = {
        'list': CourseSerializer,
        'retrieve': CourseSerializer,
        'draft': CourseSerializer,
        'change_category_bulk': CourseBulkChangeCategorySerializer,
    }
    filter_fields = ('category', 'status', 'is_infinite', 'is_featured',)
    search_fields = ('author__email', 'title', 'category__title',)
    ordering_fields = ('id', 'title', 'created_at', 'update_at',)
    # permission_classes = (IsAuthorObjectOrAdmin,)
    # permission_map = {
    #     'create': IsAuthorOrAdmin,
    #     'delete': IsAdmin,
    # }

    def list(self, request, *args, **kwargs):
        queryset = self.filter_queryset(self.get_queryset())

        if request.query_params.get('page'):
            page = self.paginate_queryset(queryset)
            if page is not None:
                serializer = self.get_serializer(page, many=True)
                return self.get_paginated_response(serializer.data)
            else:
                return Response({'results': []})

        serializer = self.get_serializer(queryset, many=True)
        return Response(serializer.data)

    @list_route(methods=['get'])
    def draft(self, request):
        drafts = Course.objects.filter(author=request.user, status=Course.DRAFT)
        serializer = self.get_serializer_class()
        serialized_data = serializer(instance=drafts.last())
        return Response(serialized_data.data)

    @list_route(methods=['patch'], url_path='change-category-bulk')
    def change_category_bulk(self, request):
        serializer_class = self.get_serializer_class()
        serializer = serializer_class(data=request.data)
        if serializer.is_valid():
            old_category_id = serializer.validated_data['old_category']
            new_category_id = serializer.validated_data['new_category']
            try:
                old_category = Category.objects.get(id=old_category_id)
            except Category.DoesNotExist:
                return Response(
                    {'success': False, 'detail': f'Category with id {old_category_id} not found'},
                    status=status.HTTP_400_BAD_REQUEST,
                )
            try:
                new_category = Category.objects.get(id=new_category_id)
            except Category.DoesNotExist:
                return Response(
                    {'success': False, 'detail': f'Category with id {new_category_id} not found'},
                    status=status.HTTP_400_BAD_REQUEST,
                )

            c = Course.objects.filter(
                category=old_category,
            ).update(
                category=new_category
            )
            return Response({'success': True})
        else:
            return Response(
                {'success': False},
                status=status.HTTP_400_BAD_REQUEST,
            )


class LessonViewSet(ExtendedModelViewSet):
    queryset = Lesson.objects.select_related(
        'course', 'cover'
    ).prefetch_related('content').all()
    serializer_class = LessonCreateSerializer
    serializer_class_map = {
        'list': LessonSerializer,
        'retrieve': LessonSerializer,
    }
    filter_fields = ('course',)
    search_fields = ('title', 'short_description',)
    ordering_fields = ('title', 'created_at', 'update_at',)
    permission_classes = (IsAuthorObjectOrAdmin,)
    permission_map = {
        'create': IsAuthorOrAdmin,
        'delete': IsAdmin,
    }


class LiveLessonViewSet(ExtendedModelViewSet):
    queryset = LiveLesson.objects.prefetch_related('content').all()
    serializer_class = LiveLessonCreateSerializer
    serializer_class_map = {
        'list': LiveLessonSerializer,
        'retrieve': LiveLessonSerializer,
    }
    search_fields = ('title', 'short_description',)
    ordering_fields = ('title', 'created_at', 'update_at',)
    permission_classes = (IsTeacherOrAdmin,)
    permission_map = {
        'delete': IsAdmin,
    }


class ImageViewSet(ExtendedModelViewSet):
    queryset = Image.objects.select_related(
        'course', 'lesson', 'img',
    ).all()
    serializer_class = ImageCreateSerializer
    serializer_class_map = {
        'list': ImageSerializer,
        'retrieve': ImageSerializer,
    }
    search_fields = ('title',)
    ordering_fields = ('title', 'created_at', 'update_at', 'position',)
    # permission_classes = (IsAuthorOrAdmin,)
    # permission_map = {
    #     'delete': IsAdmin,
    # }


class TextViewSet(ExtendedModelViewSet):
    queryset = Text.objects.select_related(
        'course', 'lesson'
    ).all()
    serializer_class = TextCreateSerializer
    serializer_class_map = {
        'list': TextSerializer,
        'retrieve': TextSerializer,
    }
    search_fields = ('title',)
    ordering_fields = ('title', 'created_at', 'update_at', 'position',)
    # permission_classes = (IsAuthorOrAdmin,)
    # permission_map = {
    #     'delete': IsAdmin,
    # }


class ImageTextViewSet(ExtendedModelViewSet):
    queryset = ImageText.objects.select_related(
        'course', 'lesson', 'img'
    ).all()
    serializer_class = ImageTextCreateSerializer
    serializer_class_map = {
        'list': ImageTextSerializer,
        'retrieve': ImageTextSerializer,
    }
    search_fields = ('title',)
    ordering_fields = ('title', 'created_at', 'update_at', 'position',)
    # permission_classes = (IsAuthorOrAdmin,)
    # permission_map = {
    #     'delete': IsAdmin,
    # }


class VideoViewSet(ExtendedModelViewSet):
    queryset = Video.objects.select_related(
        'course', 'lesson'
    ).all()
    serializer_class = VideoCreateSerializer
    serializer_class_map = {
        'list': VideoSerializer,
        'retrieve': VideoSerializer,
    }
    search_fields = ('title',)
    ordering_fields = ('title', 'created_at', 'update_at', 'position',)
    # permission_classes = (IsAuthorOrAdmin,)
    # permission_map = {
    #     'delete': IsAdmin,
    # }


class GalleryViewSet(ExtendedModelViewSet):
    queryset = Gallery.objects.all()
    serializer_class = GallerySerializer
    search_fields = ('title',)
    ordering_fields = ('title', 'created_at', 'update_at',)
    # permission_classes = (IsAuthorOrAdmin,)
    # permission_map = {
    #     'delete': IsAdmin,
    # }


class GalleryImageViewSet(ExtendedModelViewSet):
    queryset = GalleryImage.objects.select_related(
        'gallery', 'img',
    ).all()
    serializer_class = GalleryImageCreateSerializer
    search_fields = ('gallery__title',)
    serializer_class_map = {
        'list': GalleryImageSerializer,
        'retrieve': GalleryImageSerializer,
    }
    # permission_classes = (IsAuthorOrAdmin,)
    # permission_map = {
    #     'delete': IsAdmin,
    # }


class UserViewSet(ExtendedModelViewSet):
    queryset = User.objects.all()
    serializer_class = UserSerializer
    serializer_class_map = {
        'upload_photo': UserPhotoSerializer,
    }
    filter_fields = ('is_staff', 'is_active', 'role',
                     'gender', 'is_email_proved', 'fb_id',)
    search_fields = ('email', 'first_name', 'last_name',
                     'country', 'city', 'fb_id',)
    ordering_fields = ('email', 'first_name', 'last_name',
                       'country', 'city', 'date_joined',)

    # permission_classes = (IsAdminOrIsSelf,)
    # permission_map = {
    #     'delete': IsAdmin,
    # }

    def list(self, request, *args, **kwargs):
        queryset = self.filter_queryset(self.get_queryset())

        if request.query_params.get('page'):
            page = self.paginate_queryset(queryset)
            if page is not None:
                serializer = self.get_serializer(page, many=True)
                return self.get_paginated_response(serializer.data)

        serializer = self.get_serializer(queryset, many=True)
        return Response(serializer.data)

    @list_route(methods=['get'])
    def me(self, request):
        serializer = self.get_serializer_class()
        serialized_data = serializer(instance=request.user)
        return Response(serialized_data.data)

    @detail_route(methods=['post'], url_path='upload-photo')
    def upload_photo(self, request, pk=None):
        user = self.get_object()
        serializer = self.get_serializer()
        serialized_data = serializer(data=request.data)
        if serialized_data.is_valid():
            user.photo = serialized_data['photo']
            user.save()
            return Response({'success': True})
        else:
            return Response({'success': False}, status=status.HTTP_400_BAD_REQUEST)


class UserGalleryViewSet(mixins.UpdateModelMixin, viewsets.GenericViewSet):
    queryset = User.objects.all()
    serializer_class = UserGalleryUpdateSerializer
    # FIXME
    authentication_classes = []


class SchoolScheduleViewSet(ExtendedModelViewSet):
    queryset = SchoolSchedule.objects.all()
    serializer_class = SchoolScheduleSerializer
    permission_classes = (IsTeacherOrAdmin,)


class ConfigViewSet(generics.RetrieveUpdateAPIView):
    queryset = Config.objects.all()
    serializer_class = ConfigSerializer
    permission_classes = (IsAdmin,)

    def perform_update(self, serializer):
        files = dict()
        for k, v in self.request.FILES.items():
            if v:
                files[k] = v
        serializer.save(**files)

    def get_object(self):
        return Config.load()


class CommentViewSet(ExtendedModelViewSet):
    queryset = Comment.objects.all()
    serializer_class = CommentSerializer
    permission_classes = (IsAuthorObjectOrAdmin,)

    def get_queryset(self):
        queryset = self.queryset
        is_deactivated = self.request.query_params.get('is_deactivated', '0')
        if is_deactivated == '0':
            queryset = queryset.filter(level=0)
        elif is_deactivated == '1':
            queryset = queryset.filter(deactivated_at__isnull=True)
        elif is_deactivated == '2':
            queryset = queryset.filter(deactivated_at__isnull=False)

        return queryset


class ObjectCommentsViewSet(ExtendedModelViewSet):
    queryset = Comment.objects.all()
    serializer_class = CommentCreateSerializer
    ordering_fields = ('update_at', )

    def get_queryset(self):
        queryset = self.queryset
        obj_type = self.request.query_params.get('obj_type')
        obj_id = self.request.query_params.get('obj_id')
        is_deactivated = self.request.query_params.get('is_deactivated')
        if obj_type == Comment.OBJ_TYPE_COURSE:
            queryset = CourseComment.objects.filter(course=obj_id)
        elif obj_type == Comment.OBJ_TYPE_LESSON:
            queryset = LessonComment.objects.filter(lesson=obj_id)
        elif obj_type == Comment.OBJ_TYPE_LIVE_LESSON:
            queryset = LiveLessonComment.objects.filter(live_lesson=obj_id)
        if is_deactivated == '0':
            queryset = queryset.filter(level=0)
        elif is_deactivated == '1':
            queryset = queryset.filter(deactivated_at__isnull=True)
        elif is_deactivated == '2':
            queryset = queryset.filter(deactivated_at__isnull=False)
        return queryset

    def get_serializer_class(self):
        if self.request.method == 'POST':
            return CommentCreateSerializer
        obj_type = self.request.query_params.get('obj_type')
        serializer_class = CommentSerializer
        if obj_type == Comment.OBJ_TYPE_COURSE:
            serializer_class = CourseCommentSerializer
        elif obj_type == Comment.OBJ_TYPE_LESSON:
            serializer_class = LessonCommentSerializer
        elif obj_type == Comment.OBJ_TYPE_LIVE_LESSON:
            serializer_class = LiveLessonCommentSerializer
        return serializer_class

    def perform_create(self, serializer):
        obj_type = self.request.data.get('obj_type')
        obj_id = self.request.data.get('obj_id')
        serializer.save()
        try:
            pusher().trigger(f'comments_{obj_type}_{obj_id}', 'add', serializer.data)
        except Exception as e:
            print(e)

    @permission_classes((IsAuthorObjectOrAdmin,))
    def perform_destroy(self, instance):
        obj_type = None
        obj_id = None
        if isinstance(instance, LessonComment):
            obj_type = Comment.OBJ_TYPE_LESSON
            obj_id = instance.lesson_id
        elif isinstance(instance, CourseComment):
            obj_type = Comment.OBJ_TYPE_COURSE
            obj_id = instance.course_id
        elif isinstance(instance, LiveLessonComment):
            obj_type = Comment.OBJ_TYPE_LIVE_LESSON
            obj_id = instance.live_lesson_id
        serializer = self.get_serializer(instance)
        try:
            pusher().trigger(f'comments_{obj_type}_{obj_id}', 'delete', serializer.data)
        except Exception as e:
            print(e)
        instance.delete()

    @authentication_classes([])
    def list(self, request, *args, **kwargs):
        queryset = self.filter_queryset(self.get_queryset()).filter(parent__isnull=True)
        serializer = self.get_serializer(queryset, many=True)
        return Response(serializer.data)


class AuthorRequestViewSet(ExtendedModelViewSet):
    queryset = AuthorRequest.objects.all()
    serializer_class = AuthorRequestSerializer
    permission_classes = (IsAdmin,)
    filter_fields = ('status',)


class PaymentViewSet(viewsets.ModelViewSet):
    queryset = Payment.objects.all()
    serializer_class = PaymentSerializer
    permission_classes = (IsAdmin,)
    filter_fields = ('status', 'user',)
    ordering_fields = (
        'id', 'user__email',
        'user__first_name', 'user__last_name',
        'amount', 'created_at',
    )
    search_fields = ('user__email', 'user__first_name', 'user__last_name',)

    def get_serializer(self, instance, *args, **kwargs):
        serializer_class = self.get_serializer_class()
        if 'update' in self.action:
            if isinstance(instance, CoursePayment):
                serializer_class = CoursePaymentCreateSerializer
            elif isinstance(instance, SchoolPayment):
                serializer_class = SchoolPaymentCreateSerializer
        kwargs['context'] = self.get_serializer_context()
        return serializer_class(instance, *args, **kwargs)

    def get_queryset(self):
        queryset = self.queryset
        course = self.request.query_params.get('course')
        weekdays = self.request.query_params.getlist('weekdays[]')
        if course:
            queryset = CoursePayment.objects.filter(course=course)
        if weekdays:
            queryset = SchoolPayment.objects.filter(weekdays__overlap=weekdays)

        return queryset.filter(status__isnull=False).order_by('-created_at')

    @action(methods=['get'], detail=False, url_path='calc-amount', authentication_classes=[], permission_classes=[])
    def calc_amount(self, request, pk=None):
        user = request.query_params.get('user')
        course = request.query_params.get('course')
        weekdays = request.query_params.getlist('weekdays[]')
        date_start = request.query_params.get('date_start')
        user = user and User.objects.get(pk=user)
        course = course and Course.objects.get(pk=course)
        date_start = date_start and datetime.strptime(date_start, '%Y-%m-%d')

        return Response(Payment.calc_amount(user=user, course=course, date_start=date_start, weekdays=weekdays))


class ContestViewSet(ExtendedModelViewSet):
    queryset = Contest.objects.all()
    serializer_class = ContestCreateSerializer
    serializer_class_map = {
        'list': ContestSerializer,
        'retrieve': ContestSerializer,
    }
    filter_fields = ('active',)
    search_fields = ('description', 'title', 'slug',)
    ordering_fields = ('id', 'title', 'active', 'date_start', 'date_end',)
    permission_classes = (IsAdmin,)


class ContestWorkViewSet(ExtendedModelViewSet):
    queryset = ContestWork.objects.all()
    serializer_class = ContestWorkCreateSerializer
    serializer_class_map = {
        'list': ContestWorkSerializer,
        'retrieve': ContestWorkSerializer,
    }
    filter_fields = ('contest',)
    # FIXME
    authentication_classes = []

    def create(self, request, *args, **kwargs):
        # FIXME
        user = User.objects.get(pk=request.data.get('user'))
        if ContestWork.objects.filter(user=user).exists():
            return Response(status=status.HTTP_400_BAD_REQUEST)
        return super().create(request, *args, **kwargs)


class CaptureEmail(views.APIView):
    authentication_classes = ()

    def post(self, request):
        list_id = None
        list_name = 'captured-emails'
        recipient_id = None
        email = request.data.get('email')
        sg = get_sendgrid_client()

        # берем все списки
        response = sg.client.contactdb.lists.get()
        if response.status_code != 200:
            return Response({'error': 'Cannot get list of lists'}, status=status.HTTP_400_BAD_REQUEST)
        # ищем нужный список
        for sg_list in response.to_dict.get('lists'):
            if sg_list.get('name') == list_name:
                list_id = sg_list.get('id')
                break
        # не нашли - создаем
        if not list_id:
            response = sg.client.contactdb.lists.post(request_body={'name': list_name})
            if response.status_code != 201:
                return Response({'error': 'List was not created'}, status=status.HTTP_400_BAD_REQUEST)
            list_id = response.to_dict.get('id')
        # добавляем получателя
        response = sg.client.contactdb.recipients.patch(request_body=[{
            'email': email,
        }])
        if response.status_code != 201:
            return Response({'error': 'Cannot update recipients'}, status=status.HTTP_400_BAD_REQUEST)
        recipient_id = response.to_dict.get('persisted_recipients')[0]
        # добавляем получателя в отдельный список
        response = sg.client.contactdb.lists._(list_id).recipients._(recipient_id).post()
        if response.status_code != 201:
            return Response({'error': 'Cannot add recipient to list'}, status=status.HTTP_400_BAD_REQUEST)

        return Response({'status': 'ok'})