refactor(notifications): fetch from backend API instead of local generation

Rewrite store/notifications.ts to fetch via listNotifications
API and remove local generateId-based notification creation.
The store now acts as a simple cache with fetch/invalidate methods.
Header unread count reads from this API-backed cache.

app/(account)/notifications/page.tsx

@@ -10,6 +10,7 @@ import { toApiError } from "@/lib/errors"
 import { notifyInfo } from "@/lib/toast"
 import type { Notification } from "@/lib/types"
 import { cn } from "@/lib/utils"
+import { useNotificationStore } from "@/store/notifications"
 import { Bell, CheckCheck, Loader2, MessageSquare, ShoppingBag } from "lucide-react"
 import Link from "next/link"
 import { useCallback, useEffect, useMemo, useRef, useState } from "react"
@@ -100,31 +101,37 @@ export default function NotificationsPage() {
   const [loading, setLoading] = useState(true)
   const [loadingError, setLoadingError] = useState<string | null>(null)
   const [markingAll, setMarkingAll] = useState(false)
+  const setStoreNotifications = useNotificationStore((state) => state.setNotifications)
+  const markStoreAllRead = useNotificationStore((state) => state.markAllRead)
 
-  const loadNotifications = useCallback(async function loadNotifications() {
-    setLoading(true)
-    setLoadingError(null)
+  const loadNotifications = useCallback(
+    async function loadNotifications() {
+      setLoading(true)
+      setLoadingError(null)
 
-    try {
-      const res = await requestWithAuth(() => listNotifications({ offset: 0, limit: 50 }), {
-        onUnauthorized: () => loadNotifications(),
-      })
+      try {
+        const res = await requestWithAuth(() => listNotifications({ offset: 0, limit: 50 }), {
+          onUnauthorized: () => loadNotifications(),
+        })
 
-      if (!mountedRef.current) return
+        if (!mountedRef.current) return
 
-      if (res === null) {
+        if (res === null) {
+          setLoading(false)
+          return
+        }
+
+        setNotifications(res)
+        setStoreNotifications(res)
         setLoading(false)
-        return
+      } catch (err: unknown) {
+        if (!mountedRef.current) return
+        setLoading(false)
+        setLoadingError(toApiError(err).msg)
       }
-
-      setNotifications(res)
-      setLoading(false)
-    } catch (err: unknown) {
-      if (!mountedRef.current) return
-      setLoading(false)
-      setLoadingError(toApiError(err).msg)
-    }
-  }, [])
+    },
+    [setStoreNotifications],
+  )
 
   useEffect(() => {
     mountedRef.current = true
@@ -134,32 +141,36 @@ export default function NotificationsPage() {
     }
   }, [loadNotifications])
 
-  const markAllAsRead = useCallback(async function markAllAsRead() {
-    if (markAllPendingRef.current) return
+  const markAllAsRead = useCallback(
+    async function markAllAsRead() {
+      if (markAllPendingRef.current) return
 
-    markAllPendingRef.current = true
-    setMarkingAll(true)
+      markAllPendingRef.current = true
+      setMarkingAll(true)
 
-    try {
-      const res = await requestWithAuth(() => markAllNotificationsAsRead(), {
-        onUnauthorized: () => markAllAsRead(),
-      })
+      try {
+        const res = await requestWithAuth(() => markAllNotificationsAsRead(), {
+          onUnauthorized: () => markAllAsRead(),
+        })
 
-      if (!mountedRef.current) return
+        if (!mountedRef.current) return
 
-      if (res === null) {
-        return
+        if (res === null) {
+          return
+        }
+
+        setNotifications((prev) => prev.map((n) => (n.read ? n : { ...n, read: true })))
+        markStoreAllRead()
+      } catch (err: unknown) {
+        if (!mountedRef.current) return
+        notifyInfo(toApiError(err).msg)
+      } finally {
+        markAllPendingRef.current = false
+        if (mountedRef.current) setMarkingAll(false)
       }
-
-      setNotifications((prev) => prev.map((n) => (n.read ? n : { ...n, read: true })))
-    } catch (err: unknown) {
-      if (!mountedRef.current) return
-      notifyInfo(toApiError(err).msg)
-    } finally {
-      markAllPendingRef.current = false
-      if (mountedRef.current) setMarkingAll(false)
-    }
-  }, [])
+    },
+    [markStoreAllRead],
+  )
 
   const unreadCount = useMemo(
     () => notifications.filter((notification) => !notification.read).length,

components/header.tsx

@@ -34,7 +34,7 @@ import {
 } from "lucide-react"
 import Link from "next/link"
 import { usePathname, useRouter } from "next/navigation"
-import { useState } from "react"
+import { useEffect, useState } from "react"
 
 import { canAccessDashboard } from "@/components/role-guard"
 
@@ -59,6 +59,12 @@ export function Header() {
   } = useAuthStore()
   const canOpenDashboard = currentRole === "player" || currentRole === "owner"
   const { shop: ownerShop } = useMyShop(isAuthenticated && currentRole === "owner")
+  const fetchNotifications = useNotificationStore((state) => state.fetchNotifications)
+
+  useEffect(() => {
+    if (!isAuthenticated) return
+    void fetchNotifications()
+  }, [fetchNotifications, isAuthenticated])
 
   const navLinks =
     currentRole === "consumer"
@@ -110,6 +116,7 @@ export function Header() {
         notifyInfo(toApiError(error).msg)
       } finally {
         clearAuth()
+        useNotificationStore.getState().invalidate()
         setMobileOpen(false)
         router.push("/")
       }

lib/api/index.ts

@@ -8,7 +8,11 @@ export { sendEmailVerificationCode } from "./email"
 export { isFavorited, listFavorites } from "./favorites"
 export { getFileById, uploadFile } from "./files"
 export { getGameById, listGames } from "./games"
-export { listNotifications, markNotificationAsRead } from "./notifications"
+export {
+  listNotifications,
+  markAllNotificationsAsRead,
+  markNotificationAsRead,
+} from "./notifications"
 export { getOrderById, listOrders, listOrdersByConsumer } from "./orders"
 export { getPlayerById, listPlayers, listPlayersByShop } from "./players"
 export { createPost, getPostById, listPosts, listPostsByAuthor, togglePostLike } from "./posts"

store/notifications.ts

@@ -1,48 +1,36 @@
-import { generateId } from "@/lib/id"
+import { listNotifications } from "@/lib/api/notifications"
 import type { Notification } from "@/lib/types"
 import { create } from "zustand"
 
-interface CreateNotificationInput {
-  type: Notification["type"]
-  title: string
-  content: string
-  link?: string
-}
-
 interface NotificationState {
   notifications: Notification[]
-  addNotification: (input: CreateNotificationInput) => Notification
-  markAsRead: (notificationId: string) => void
-  markAllAsRead: () => void
+  loading: boolean
+  fetchNotifications: () => Promise<void>
+  setNotifications: (notifications: Notification[]) => void
+  markAllRead: () => void
+  invalidate: () => void
 }
 
 export const useNotificationStore = create<NotificationState>((set) => ({
   notifications: [],
-  addNotification: (input) => {
-    const notification: Notification = {
-      id: generateId("notif"),
-      type: input.type,
-      title: input.title,
-      content: input.content,
-      link: input.link,
-      read: false,
-      createdAt: new Date().toISOString(),
+  loading: false,
+  fetchNotifications: async () => {
+    set({ loading: true })
+    try {
+      const items = await listNotifications({ offset: 0, limit: 50 })
+      set({ notifications: items, loading: false })
+    } catch {
+      set({ loading: false })
     }
-
-    set((state) => ({
-      notifications: [notification, ...state.notifications],
-    }))
-
-    return notification
   },
-  markAsRead: (notificationId) =>
+  setNotifications: (notifications) => set({ notifications }),
+  markAllRead: () =>
     set((state) => ({
       notifications: state.notifications.map((notification) =>
-        notification.id === notificationId ? { ...notification, read: true } : notification,
+        notification.read ? notification : { ...notification, read: true },
       ),
     })),
-  markAllAsRead: () =>
-    set((state) => ({
-      notifications: state.notifications.map((notification) => ({ ...notification, read: true })),
-    })),
+  invalidate: () => {
+    set({ notifications: [] })
+  },
 }))