6.4.3: Фоновое обновление досок при наличии кеша

play-life-web/src/components/ShoppingList.jsx

@@ -110,10 +110,21 @@ function ShoppingList({ onNavigate, refreshTrigger = 0, isActive = false, initia
     return null
   }
 
+  const hasBoardsCache = () => {
+    try {
+      const cached = localStorage.getItem(BOARDS_CACHE_KEY)
+      if (cached) {
+        const data = JSON.parse(cached)
+        return !!(data.boards && data.boards.length >= 0)
+      }
+    } catch (err) {}
+    return false
+  }
+
   const [selectedBoardId, setSelectedBoardIdState] = useState(getInitialBoardId)
   const [items, setItems] = useState([])
   const [loading, setLoading] = useState(true)
-  const [boardsLoading, setBoardsLoading] = useState(true)
+  const [boardsLoading, setBoardsLoading] = useState(!hasBoardsCache())
   const [error, setError] = useState('')
   const [selectedItemForDetail, setSelectedItemForDetail] = useState(null)
   const [selectedItemForPostpone, setSelectedItemForPostpone] = useState(null)
@@ -142,8 +153,8 @@ function ShoppingList({ onNavigate, refreshTrigger = 0, isActive = false, initia
   }
 
   // Загрузка досок
-  const fetchBoards = async () => {
-    setBoardsLoading(true)
+  const fetchBoards = async (showLoading = true) => {
+    if (showLoading) setBoardsLoading(true)
     try {
       const res = await authFetch('/api/shopping/boards')
       if (res.ok) {
@@ -218,7 +229,8 @@ function ShoppingList({ onNavigate, refreshTrigger = 0, isActive = false, initia
 
   // Начальная загрузка
   useEffect(() => {
-    fetchBoards()
+    const hasCache = hasBoardsCache()
+    fetchBoards(!hasCache)
     initialFetchDoneRef.current = true
   }, [])
 
@@ -235,7 +247,7 @@ function ShoppingList({ onNavigate, refreshTrigger = 0, isActive = false, initia
   // Рефреш при возврате на таб
   useEffect(() => {
     if (isActive && !prevIsActiveRef.current && initialFetchDoneRef.current) {
-      fetchBoards()
+      fetchBoards(false)
       if (selectedBoardId) fetchItems(selectedBoardId)
     }
     prevIsActiveRef.current = isActive
@@ -244,7 +256,7 @@ function ShoppingList({ onNavigate, refreshTrigger = 0, isActive = false, initia
   // Рефреш по триггеру
   useEffect(() => {
     if (refreshTrigger > 0) {
-      fetchBoards()
+      fetchBoards(false)
       if (selectedBoardId) fetchItems(selectedBoardId)
     }
   }, [refreshTrigger])