feat: 开发采集、采集箱和商品编辑功能

extension-v2/src/export/idb.ts

@@ -0,0 +1,63 @@
+/**
+ * IndexedDB 封装 —— 持久化 FileSystemDirectoryHandle
+ *
+ * chrome.storage 存不了 FileSystemDirectoryHandle（它不是 JSON 可序列化类型），
+ * 必须用 IndexedDB（structured clone 支持）。存一次后跨会话免重复授权。
+ */
+
+const DB_NAME = 'ozon-seller-kit';
+const STORE = 'handles';
+const ROOT_KEY = 'SH_ROOT_DIR';
+
+function openDb(): Promise<IDBDatabase> {
+  return new Promise((resolve, reject) => {
+    const req = indexedDB.open(DB_NAME, 1);
+    req.onupgradeneeded = () => {
+      if (!req.result.objectStoreNames.contains(STORE)) {
+        req.result.createObjectStore(STORE);
+      }
+    };
+    req.onsuccess = () => resolve(req.result);
+    req.onerror = () => reject(req.error);
+  });
+}
+
+export async function idbSet(key: string, value: unknown): Promise<void> {
+  const db = await openDb();
+  return new Promise((resolve, reject) => {
+    const tx = db.transaction(STORE, 'readwrite');
+    tx.objectStore(STORE).put(value, key);
+    tx.oncomplete = () => {
+      db.close();
+      resolve();
+    };
+    tx.onerror = () => {
+      db.close();
+      reject(tx.error);
+    };
+  });
+}
+
+export async function idbGet<T>(key: string): Promise<T | null> {
+  const db = await openDb();
+  return new Promise((resolve, reject) => {
+    const tx = db.transaction(STORE, 'readonly');
+    const req = tx.objectStore(STORE).get(key);
+    req.onsuccess = () => {
+      db.close();
+      resolve((req.result as T) ?? null);
+    };
+    req.onerror = () => {
+      db.close();
+      reject(req.error);
+    };
+  });
+}
+
+export async function saveRootDir(handle: FileSystemDirectoryHandle): Promise<void> {
+  await idbSet(ROOT_KEY, handle);
+}
+
+export async function loadRootDir(): Promise<FileSystemDirectoryHandle | null> {
+  return idbGet<FileSystemDirectoryHandle>(ROOT_KEY);
+}