186 lines
5.0 KiB
HTML
186 lines
5.0 KiB
HTML
<!DOCTYPE html>
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<html lang="zh-CN">
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<head>
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<meta charset="UTF-8"/>
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<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
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<title>TypeWords 数据迁移</title>
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<style>
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body {
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font-family: sans-serif;
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padding: 20px;
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}
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button {
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padding: 10px 20px;
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font-size: 16px;
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}
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pre {
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background: #f7f7f7;
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padding: 10px;
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border-radius: 4px;
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}
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</style>
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</head>
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<body>
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<h2>TypeWords 数据迁移（旧域名）</h2>
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<p>等待新域名发送迁移指令 ...</p>
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<pre id="log"></pre>
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<script>
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function log(msg) {
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console.log(msg);
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document.getElementById('log').textContent += msg + "\n";
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}
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let dbReadyPromise = null;
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let name = 'keyval-store';
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let keys = [
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'type-words-app-version',
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'typing-word-dict',
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'typing-word-setting',
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'typing-word-files'
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]
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function openDB(dbName, keys) {
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if (dbReadyPromise) return dbReadyPromise;
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dbReadyPromise = new Promise((resolve, reject) => {
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const request = indexedDB.open(dbName, 1);
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request.onupgradeneeded = (event) => {
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const db = event.target.result;
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keys.forEach((name) => {
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if (!db.objectStoreNames.contains(name)) {
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db.createObjectStore(name);
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}
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});
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};
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request.onsuccess = () => resolve(request.result);
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request.onerror = () => reject(request.error);
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});
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return dbReadyPromise;
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}
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openDB(name, keys)
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// --- localStorage 读取 ---
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function readLocalStorageKeys(keys) {
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const out = {};
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keys.forEach(k => {
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out[k] = localStorage.getItem(k);
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});
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return out;
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}
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// --- IndexedDB（兼容 idb-keyval）读取 ---
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function readIndexedDBCompatible(dbName, keys) {
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return new Promise(async (resolve) => {
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const db = await openDB(dbName, keys);
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const stores = Array.from(db.objectStoreNames);
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if (stores.length === 0) {
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db.close();
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tryOpenKeyvalDefault();
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return;
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}
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if (stores.length === 1 && stores[0] === 'keyval') {
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readFromKeyvalDB(db).then(result => {
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db.close();
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resolve(result);
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});
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} else {
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readFromMultipleStores(db, stores).then(result => {
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db.close();
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resolve(result);
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});
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}
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function tryOpenKeyvalDefault() {
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const req = indexedDB.open('keyval');
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req.onerror = () => resolve({indexedDB: {}, reason: 'no-db'});
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req.onsuccess = function () {
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const db2 = req.result;
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readFromKeyvalDB(db2).then(result => {
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db2.close();
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resolve(result);
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});
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};
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}
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function readFromKeyvalDB(db) {
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return new Promise((res) => {
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const tx = db.transaction('keyval', 'readonly');
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const store = tx.objectStore('keyval');
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const out = {};
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let finished = 0;
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keys.forEach(k => {
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const r = store.get(k);
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r.onsuccess = () => {
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out[k] = r.result ?? null;
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if (++finished === keys.length) res({indexedDB: out});
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};
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r.onerror = () => {
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out[k] = null;
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if (++finished === keys.length) res({indexedDB: out});
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};
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});
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});
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}
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function readFromMultipleStores(db, stores) {
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return new Promise(res => {
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const result = {};
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let count = 0;
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stores.forEach(storeName => {
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try {
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const tx = db.transaction(storeName, 'readonly');
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const store = tx.objectStore(storeName);
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const req = store.getAll();
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req.onsuccess = () => {
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result[storeName] = req.result;
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if (++count === stores.length) res({indexedDB: result});
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};
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req.onerror = () => {
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result[storeName] = [];
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if (++count === stores.length) res({indexedDB: result});
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};
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} catch {
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result[storeName] = [];
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if (++count === stores.length) res({indexedDB: result});
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}
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});
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});
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}
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});
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}
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async function readAllStorageForMigration() {
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const local = readLocalStorageKeys(['PracticeSaveWord', 'PracticeSaveArticle']);
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const indexed = await readIndexedDBCompatible(name, keys);
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return {localStorage: local, indexedDB: indexed.indexedDB ?? {}};
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}
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// =====================
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// 🔥 自动监听迁移指令
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// =====================
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window.addEventListener('message', async (event) => {
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if (event.data?.type === 'REQUEST_MIGRATION_DATA') {
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log('收到迁移指令，开始读取本地数据...');
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const data = await readAllStorageForMigration();
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log('读取完成，开始发送数据到新域名');
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event.source.postMessage({type: 'MIGRATE_DATA', payload: data}, event.origin);
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log('已发送迁移数据');
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}
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});
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</script>
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</body>
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</html> |