From 883dfda1473c9e020966827a2e7790d5060189b0 Mon Sep 17 00:00:00 2001
From: Ivlev Denis <di-erz@yandex.ru>
Date: Tue, 6 Mar 2018 13:41:30 +0300
Subject: [PATCH] Add site dynamic configs api

---
 api/v1/serializers/config.py | 38 ++++++++++++++++++++++++++++++++++++
 api/v1/urls.py               |  7 +++++--
 api/v1/views.py              | 22 ++++++++++++++++++++-
 3 files changed, 64 insertions(+), 3 deletions(-)
 create mode 100644 api/v1/serializers/config.py

diff --git a/api/v1/serializers/config.py b/api/v1/serializers/config.py
new file mode 100644
index 00000000..92f8aa64
--- /dev/null
+++ b/api/v1/serializers/config.py
@@ -0,0 +1,38 @@
+from constance import config
+from constance.admin import get_values, ConstanceForm
+from rest_framework import serializers
+from rest_framework.fields import SkipField
+from collections import OrderedDict
+
+
+def _set_constance_value(key, value):
+    form = ConstanceForm(initial=get_values())
+    field = form.fields[key]
+    clean_value = field.clean(field.to_python(value))
+    setattr(config, key, clean_value)
+
+
+class ConfigSerializer(serializers.Serializer):
+    INSTAGRAM_CLIENT_ACCESS_TOKEN = serializers.CharField(required=False)
+    INSTAGRAM_CLIENT_SECRET = serializers.CharField(required=False)
+    INSTAGRAM_RESULTS_TAG = serializers.CharField(required=False)
+    INSTAGRAM_RESULTS_PATH = serializers.CharField(required=False)
+    SERVICE_COMMISSION = serializers.IntegerField(required=False)
+
+    def to_representation(self, instance):
+        ret = OrderedDict()
+        fields = self._readable_fields
+        for field in fields:
+            attribute = instance.get(field.field_name)
+            ret[field.field_name] = field.to_representation(attribute)
+        return ret
+
+    def to_internal_value(self, data):
+        ret = OrderedDict(get_values())
+        for k, v in data.items():
+            ret[k] = v
+        return ret
+
+    def update(self, instance, validated_data):
+        for k, v in validated_data.items():
+            _set_constance_value(k, v)
diff --git a/api/v1/urls.py b/api/v1/urls.py
index 572a90df..ab852c4d 100644
--- a/api/v1/urls.py
+++ b/api/v1/urls.py
@@ -8,7 +8,7 @@ from drf_yasg import openapi
 
 from .auth import ObtainToken
 from .views import (
-    AuthorBalanceViewSet,
+    AuthorBalanceViewSet, ConfigViewSet,
     CategoryViewSet, CourseViewSet,
     MaterialViewSet, LikeViewSet,
     ImageViewSet, TextViewSet,
@@ -38,6 +38,8 @@ router.register(r'school-schedules', SchoolScheduleViewSet, base_name='school-sc
 
 router.register(r'users', UserViewSet, base_name='users')
 
+# router.register(r'configs', ConfigViewSet, base_name='configs')
+
 
 schema_view = get_schema_view(
     openapi.Info(
@@ -51,9 +53,10 @@ schema_view = get_schema_view(
 )
 
 urlpatterns = [
+    path('api-token-auth/', ObtainToken.as_view(), name='api-token-auth'),
+    path('configs/', ConfigViewSet.as_view(), name='configs'),
     path('swagger(<str:format>.json|.yaml)', schema_view.without_ui(cache_timeout=None), name='schema-json'),
     path('swagger/', schema_view.with_ui('swagger', cache_timeout=None), name='schema-swagger-ui'),
     path('redoc/', schema_view.with_ui('redoc', cache_timeout=None), name='schema-redoc'),
-    path('api-token-auth/', ObtainToken.as_view(), name='api-token-auth'),
     path('', include((router.urls, 'api-root')), name='api-root'),
 ]
diff --git a/api/v1/views.py b/api/v1/views.py
index ad4b1402..68f0f428 100644
--- a/api/v1/views.py
+++ b/api/v1/views.py
@@ -1,12 +1,16 @@
+from constance.admin import get_values
+
 from django.contrib.auth import get_user_model
 
 from rest_framework import status
-from rest_framework import viewsets
+from rest_framework import views, viewsets
+from rest_framework import generics
 from rest_framework.decorators import detail_route, list_route
 from rest_framework.response import Response
 
 from . import ExtendedModelViewSet
 
+from .serializers.config import ConfigSerializer
 from .serializers.course import (
     CategorySerializer, LikeSerializer,
     CourseSerializer, CourseCreateSerializer,
@@ -38,6 +42,7 @@ from apps.content.models import (
 )
 from apps.payment.models import AuthorBalance
 from apps.school.models import SchoolSchedule
+
 User = get_user_model()
 
 
@@ -309,3 +314,18 @@ class SchoolScheduleViewSet(ExtendedModelViewSet):
     queryset = SchoolSchedule.objects.all()
     serializer_class = SchoolScheduleSerializer
     permission_classes = (IsAdmin,)
+
+
+class ConfigViewSet(generics.RetrieveUpdateAPIView):
+    serializer_class = ConfigSerializer
+    permission_classes = (IsAdmin,)
+
+    def retrieve(self, request, *args, **kwargs):
+        serializer = ConfigSerializer(get_values())
+        return Response(serializer.data)
+
+    def patch(self, request, *args, **kwargs):
+        serializer = ConfigSerializer(data=request.data)
+        if serializer.is_valid():
+            serializer.update(get_values(), serializer.validated_data)
+        return Response(serializer.data)