feat: notifications (#1947)

* feat: notifications
* feat: watchers

* improvements

* handle page move for watchers

* make watchers non-blocking

* more

apps/client/src/features/notification/queries/notification-query.ts

@@ -0,0 +1,59 @@
+import {
+  keepPreviousData,
+  useInfiniteQuery,
+  useMutation,
+  useQuery,
+  useQueryClient,
+} from "@tanstack/react-query";
+import {
+  getNotifications,
+  getUnreadCount,
+  markNotificationsRead,
+  markAllNotificationsRead,
+} from "../services/notification-service";
+
+export const NOTIFICATION_KEY = ["notifications"];
+export const UNREAD_COUNT_KEY = ["notifications", "unread-count"];
+
+export function useNotificationsQuery() {
+  return useInfiniteQuery({
+    queryKey: NOTIFICATION_KEY,
+    queryFn: ({ pageParam }) => getNotifications({ cursor: pageParam }),
+    initialPageParam: undefined as string | undefined,
+    getNextPageParam: (lastPage) =>
+      lastPage.meta.hasNextPage ? lastPage.meta.nextCursor : undefined,
+    staleTime: 0,
+    gcTime: 0,
+    placeholderData: keepPreviousData,
+  });
+}
+
+export function useUnreadCountQuery() {
+  return useQuery({
+    queryKey: UNREAD_COUNT_KEY,
+    queryFn: getUnreadCount,
+  });
+}
+
+export function useMarkReadMutation() {
+  const queryClient = useQueryClient();
+
+  return useMutation({
+    mutationFn: (notificationIds: string[]) =>
+      markNotificationsRead(notificationIds),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: NOTIFICATION_KEY });
+    },
+  });
+}
+
+export function useMarkAllReadMutation() {
+  const queryClient = useQueryClient();
+
+  return useMutation({
+    mutationFn: markAllNotificationsRead,
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: NOTIFICATION_KEY });
+    },
+  });
+}