feat: GET /notifications and /notifications/:id

Author: devnchill

src/api/notifications/__init__.py

@@ -0,0 +1,40 @@
+from django.db.models import QuerySet
+from rest_framework.pagination import PageNumberPagination
+from rest_framework import serializers, viewsets
+from rest_framework.permissions import IsAuthenticated
+
+from webview.models import Notification
+
+
+class NotificationSerializer(serializers.ModelSerializer):
+    title = serializers.SerializerMethodField()
+
+    class Meta:
+        model = Notification
+        fields = ["id", "title", "is_read", "created_at"]
+
+    def get_title(self, obj: Notification) -> str:
+        return obj.title
+
+
+class NotificationPagination(PageNumberPagination):
+    page_size = 20
+    page_size_query_param = "per_page"
+    max_page_size = 100
+
+
+class NotificationViewSet(viewsets.ReadOnlyModelViewSet):
+    permission_classes = [IsAuthenticated]
+    serializer_class = NotificationSerializer
+
+    def get_queryset(
+        self,
+    ) -> QuerySet[Notification]:  # pyright: ignore[reportIncompatibleMethodOverride]
+        return (
+            Notification.objects.filter(user=self.request.user)
+            .select_related(
+                "suggestionnotification__suggestion__cve",
+            )
+            .select_subclasses()
+            .order_by("-created_at")
+        )

src/api/notifications/views.py

@@ -4,11 +4,13 @@
 
 from api.issues.views import NixpkgsIssueViewSet
 from api.me import CurrentUserView
+from api.notifications.views import NotificationViewSet
 from api.subscriptions.views import SubscriptionsViewSet
 from api.suggestions.views import SuggestionViewSet
 
 v1_router = routers.DefaultRouter(trailing_slash=False)
 v1_router.register(r"issues", NixpkgsIssueViewSet)
+v1_router.register(r"notifications", NotificationViewSet)
 v1_router.register("suggestions", SuggestionViewSet)
 v1_router.register("subscriptions", SubscriptionsViewSet)