From 086b26e6d914005ded391fff5c6976a6fd1e87fe Mon Sep 17 00:00:00 2001
From: littlewolf <nickptic@code-artel.com>
Date: Thu, 7 Nov 2019 15:35:06 +0300
Subject: [PATCH] Add endpoints to gallery

---
 apps/location/serializers/common.py | 40 +++++++++++++++++++++-
 apps/location/urls/common.py        |  2 +-
 apps/location/views/common.py       | 52 ++++++++++++++++++++++++++---
 3 files changed, 88 insertions(+), 6 deletions(-)

diff --git a/apps/location/serializers/common.py b/apps/location/serializers/common.py
index 9d48c769..4b0011d0 100644
--- a/apps/location/serializers/common.py
+++ b/apps/location/serializers/common.py
@@ -4,7 +4,7 @@ from django.utils.translation import ugettext_lazy as _
 from rest_framework import serializers
 from location import models
 from utils.serializers import TranslatedField
-from apps.gallery.models import Image
+from gallery.models import Image
 
 
 class CountrySerializer(serializers.ModelSerializer):
@@ -160,6 +160,44 @@ class CityImageSerializer(serializers.ModelSerializer):
         }
 
 
+class CityGallerySerializer(serializers.ModelSerializer):
+    """Serializer class for model NewsGallery."""
+
+    class Meta:
+        """Meta class"""
+
+        model = models.CityGallery
+        fields = [
+            'id',
+            'is_main',
+        ]
+
+    def get_request_kwargs(self):
+        """Get url kwargs from request."""
+        return self.context.get('request').parser_context.get('kwargs')
+
+    def validate(self, attrs):
+        """Override validate method."""
+        news_pk = self.get_request_kwargs().get('pk')
+        image_id = self.get_request_kwargs().get('image_id')
+
+        news_qs = models.City.objects.filter(pk=news_pk)
+        image_qs = Image.objects.filter(id=image_id)
+
+        if not news_qs.exists():
+            raise serializers.ValidationError({'detail': _('News not found')})
+        if not image_qs.exists():
+            raise serializers.ValidationError({'detail': _('Image not found')})
+
+        news = news_qs.first()
+        image = image_qs.first()
+
+        attrs['news'] = news
+        attrs['image'] = image
+
+        return attrs
+
+
 class AddressBaseSerializer(serializers.ModelSerializer):
     """Serializer for address obj in related objects."""
 
diff --git a/apps/location/urls/common.py b/apps/location/urls/common.py
index 704ff600..e2840590 100644
--- a/apps/location/urls/common.py
+++ b/apps/location/urls/common.py
@@ -14,7 +14,7 @@ urlpatterns = [
 
     path('cities/<int:pk>/gallery/', views.CityGalleryListView.as_view(),
          name='gallery-list'),
-    path('cities/<int:pk>/gallery/<int:image_id>/', views.NewsBackOfficeGalleryCreateDestroyView.as_view(),
+    path('cities/<int:pk>/gallery/<int:image_id>/', views.CityGalleryCreateDestroyView.as_view(),
          name='gallery-create-destroy'),
 
     path('countries/', views.CountryListView.as_view(), name='country-list'),
diff --git a/apps/location/views/common.py b/apps/location/views/common.py
index 2d8d6b53..5b17d31d 100644
--- a/apps/location/views/common.py
+++ b/apps/location/views/common.py
@@ -1,7 +1,10 @@
 """Location app views."""
-from rest_framework import generics
-from rest_framework import permissions
+from django.conf import settings
+from django.db.transaction import on_commit
 from django.shortcuts import get_object_or_404
+from rest_framework import generics, permissions, status
+from rest_framework.response import Response
+from gallery.tasks import delete_image
 
 from location import models, serializers
 
@@ -109,8 +112,7 @@ class CityGalleryListView(generics.ListAPIView):
     serializer_class = serializers.CityImageSerializer
 
     permission_classes = (permissions.IsAuthenticated,)
-    queryset = models.City.objects.with_base_related() \
-        .order_by('-is_highlighted', '-created')
+    queryset = models.City.objects
 
     def get_object(self):
         """Override get_object method."""
@@ -127,6 +129,48 @@ class CityGalleryListView(generics.ListAPIView):
         return self.get_object().gallery.all()
 
 
+class CityGalleryCreateDestroyView(generics.CreateAPIView,
+                                             generics.DestroyAPIView):
+
+    permission_classes = (permissions.IsAuthenticated,)
+    queryset = models.City.objects
+
+    """Resource for a create gallery for news for back-office users."""
+    serializer_class = serializers.CityGallerySerializer
+
+    def get_object(self):
+        """
+        Returns the object the view is displaying.
+        """
+        city_qs = self.filter_queryset(self.get_queryset())
+
+        city = get_object_or_404(city_qs, pk=self.kwargs['pk'])
+        gallery = get_object_or_404(city.news_gallery, image_id=self.kwargs['image_id'])
+
+        # May raise a permission denied
+        self.check_object_permissions(self.request, gallery)
+
+        return gallery
+
+    def create(self, request, *args, **kwargs):
+        """Overridden create method"""
+        super().create(request, *args, **kwargs)
+        return Response(status=status.HTTP_201_CREATED)
+
+    def destroy(self, request, *args, **kwargs):
+        """Override destroy method."""
+        gallery_obj = self.get_object()
+        if settings.USE_CELERY:
+            on_commit(lambda: delete_image.delay(image_id=gallery_obj.image.id,
+                                                 completely=False))
+        else:
+            on_commit(lambda: delete_image(image_id=gallery_obj.image.id,
+                                           completely=False))
+        # Delete an instances of NewsGallery model
+        gallery_obj.delete()
+        return Response(status=status.HTTP_204_NO_CONTENT)
+
+
 # Address
 class AddressCreateView(AddressViewMixin, generics.CreateAPIView):
     """Create view for model Address"""