display files with cache image

2026-07-27 23:02:09 +02:00
parent c5a959a27b
commit e8ceb99a5d
25 changed files with 814 additions and 118 deletions
@@ -0,0 +1,44 @@
+import { createMMKV } from 'react-native-mmkv';
+import { FileItem } from '../types';
+
+const storage = createMMKV({ id: 'vaultdrop-metadata' });
+
+const FILES_KEY = 'backend_files_cache';
+const UPDATED_AT_KEY = 'cache_updated_at';
+const STALE_MS = 5 * 60 * 1000;
+
+interface CachedFiles {
+  files: FileItem[];
+  page: number;
+  total: number;
+}
+
+export const metadataCache = {
+  getFiles(): CachedFiles | null {
+    const raw = storage.getString(FILES_KEY);
+    if (!raw) return null;
+    try {
+      return JSON.parse(raw) as CachedFiles;
+    } catch {
+      return null;
+    }
+  },
+
+  setFiles(files: FileItem[], page: number, total: number) {
+    const data: CachedFiles = { files, page, total };
+    storage.set(FILES_KEY, JSON.stringify(data));
+    storage.set(UPDATED_AT_KEY, Date.now());
+  },
+
+  isStale(): boolean {
+    const raw = storage.getString(UPDATED_AT_KEY);
+    if (!raw) return true;
+    const updatedAt = Number(raw);
+    return Date.now() - updatedAt > STALE_MS;
+  },
+
+  clear() {
+    storage.remove(FILES_KEY);
+    storage.remove(UPDATED_AT_KEY);
+  },
+};