x

frontend/src/hooks/useSiteStatus.ts

@@ -7,13 +7,16 @@ const POLL_MS = 5_000
 export function useSiteStatus() {
   const [row, setRow] = useState<SiteStatusRow | null>(null)
   const [ready, setReady] = useState(false)
+  const [error, setError] = useState<string | null>(null)
 
   const load = useCallback(async () => {
     try {
       const rows = await getJson<SiteStatusRow[]>('/vw_site_status')
       setRow(Array.isArray(rows) && rows.length > 0 ? rows[0]! : null)
+      setError(null)
     } catch {
       setRow(null)
+      setError('Stav lokality se nepodařilo načíst')
     } finally {
       setReady(true)
     }
@@ -35,6 +38,7 @@ export function useSiteStatus() {
   return {
     site: row,
     ready,
+    error,
     /** Máme řádek lokality a alespoň jednu telemetrickou hodnotu (jinak skeleton). */
     hasLiveData: row != null && hasTelemetry,
     reload: load,