add files listing

mobile/services/safDirectory.ts

@@ -0,0 +1,63 @@
+import { createMMKV } from 'react-native-mmkv';
+
+export type StoredFolder = {
+  id: string;
+  uri: string;
+  name: string;
+  visible: boolean;
+};
+
+const storage = createMMKV({ id: 'vaultdrop-saf' });
+
+const FOLDERS_KEY = 'saf_folders';
+
+function generateId(): string {
+  return `folder_${Date.now()}_${Math.random().toString(36).slice(2, 8)}`;
+}
+
+function getAllRaw(): StoredFolder[] {
+  const raw = storage.getString(FOLDERS_KEY);
+  if (!raw) return [];
+  return JSON.parse(raw) as StoredFolder[];
+}
+
+function saveAll(folders: StoredFolder[]) {
+  storage.set(FOLDERS_KEY, JSON.stringify(folders));
+}
+
+export const safDirectory = {
+  getAll(): StoredFolder[] {
+    return getAllRaw();
+  },
+
+  getVisibleFolders(): StoredFolder[] {
+    return getAllRaw().filter((f) => f.visible);
+  },
+
+  addFolder(uri: string, name: string): StoredFolder {
+    const folders = getAllRaw();
+    if (folders.some((f) => f.uri === uri)) {
+      return folders.find((f) => f.uri === uri)!;
+    }
+    const folder: StoredFolder = { id: generateId(), uri, name, visible: true };
+    folders.push(folder);
+    saveAll(folders);
+    return folder;
+  },
+
+  removeFolder(id: string) {
+    const folders = getAllRaw().filter((f) => f.id !== id);
+    saveAll(folders);
+  },
+
+  toggleVisibility(id: string) {
+    const folders = getAllRaw().map((f) =>
+      f.id === id ? { ...f, visible: !f.visible } : f
+    );
+    saveAll(folders);
+  },
+
+  clear() {
+    storage.remove(FOLDERS_KEY);
+  },
+};