see the real client IP behind ArvanCloud, and mark all notifications read in one call

Production is ArvanCloud -> nginx -> gunicorn, but NUM_PROXIES was 1, so DRF
took ArvanCloud's edge IP as the client: every guest and every OTP request
behind one edge shared a single throttle bucket (20 guest sessions an hour for
everyone). Default is now 2, and /api/health reports clientIp so the proxy
count can be checked from outside.

PATCH /api/notifications/read-all replaces the frontend's one-PATCH-per-item
loop, which spent the shared "read" budget 75 requests at a time.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

notifications/serializers.py

@@ -24,3 +24,8 @@ class NotificationListResponseSerializer(serializers.Serializer):
 
 class MarkReadResponseSerializer(serializers.Serializer):
     success = serializers.BooleanField()
+
+
+class MarkAllReadResponseSerializer(serializers.Serializer):
+    success = serializers.BooleanField()
+    updated = serializers.IntegerField()

notifications/tests.py

@@ -146,3 +146,29 @@ class NotificationPayloadShapeTests(TestCase):
         r = self.client.get('/api/notifications', HTTP_AUTHORIZATION=f'Bearer {self.token}')
 
         self.assertEqual(r.data['items'][0]['body'], '')
+
+
+class MarkAllReadTests(TestCase):
+    """دکمه‌ی «همه خوانده شد» با یک درخواست، نه یکی برای هر اعلان."""
+
+    def setUp(self):
+        from django.core.cache import cache
+        cache.clear()
+        from accounts.authentication import issue_access_token
+        from accounts.models import User
+        self.me = User.objects.create(phone='09120000021')
+        self.other = User.objects.create(phone='09120000022')
+        self.auth = {'HTTP_AUTHORIZATION': f'Bearer {issue_access_token(self.me.id)}'}
+        for user in (self.me, self.me, self.other):
+            Notification.objects.create(user_id=user.id, type='xp_earned', title='x')
+
+    def test_marks_only_my_unread_notifications(self):
+        response = self.client.patch('/api/notifications/read-all', **self.auth)
+
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(response.json(), {'success': True, 'updated': 2})
+        self.assertFalse(Notification.objects.filter(user_id=self.me.id, is_read=False).exists())
+        self.assertTrue(Notification.objects.filter(user_id=self.other.id, is_read=False).exists())
+
+    def test_requires_sign_in(self):
+        self.assertEqual(self.client.patch('/api/notifications/read-all').status_code, 401)

notifications/urls.py

@@ -1,8 +1,9 @@
 from django.urls import path
 
-from .views import NotificationListView, NotificationMarkReadView
+from .views import NotificationListView, NotificationMarkAllReadView, NotificationMarkReadView
 
 urlpatterns = [
     path('notifications', NotificationListView.as_view(), name='notifications-list'),
+    path('notifications/read-all', NotificationMarkAllReadView.as_view(), name='notifications-mark-all-read'),
     path('notifications/<int:id>/read', NotificationMarkReadView.as_view(), name='notifications-mark-read'),
 ]

notifications/views.py

@@ -6,7 +6,9 @@ from rest_framework.throttling import ScopedRateThrottle
 from rest_framework.views import APIView
 
 from .models import Notification
-from .serializers import MarkReadResponseSerializer, NotificationListResponseSerializer
+from .serializers import (
+    MarkAllReadResponseSerializer, MarkReadResponseSerializer, NotificationListResponseSerializer,
+)
 
 # سقفِ تعدادِ اعلانِ برگشتی؛ جلوی رشدِ نامحدودِ پاسخ برای کاربرِ قدیمی رو
 # می‌گیره. صفحه‌بندیِ واقعی (cursor) وقتی فرانت infinite-scroll اضافه کنه.
@@ -60,3 +62,25 @@ class NotificationMarkReadView(APIView):
             notification.save(update_fields=['is_read'])
 
         return Response(MarkReadResponseSerializer({'success': True}).data)
+
+
+class NotificationMarkAllReadView(APIView):
+    """
+    PATCH /api/notifications/read-all — همه‌ی اعلان‌های کاربر خوانده‌شده.
+
+    دکمه‌ی «همه خوانده شد» پیش از این برای هر اعلان یک درخواستِ جدا می‌زد؛
+    حسابی با ۷۵ اعلان یعنی ۷۵ درخواستِ هم‌زمان که سهمِ throttleِ read را
+    (همان که /home و بقیه مصرف می‌کنند) یک‌جا می‌خورد.
+    """
+
+    permission_classes = [IsAuthenticated]
+    throttle_scope = 'read'
+    throttle_classes = [GuestAwareReadThrottle]
+
+    @extend_schema(request=None, responses=MarkAllReadResponseSerializer,
+                   tags=['Notifications (notifications)'])
+    def patch(self, request):
+        updated = Notification.objects.filter(
+            user_id=request.user.id, is_read=False,
+        ).update(is_read=True)
+        return Response(MarkAllReadResponseSerializer({'success': True, 'updated': updated}).data)