// dump IndexedDB 结构 + Hive entry 格式
const { chromium } = require('playwright');
const BASE = 'http://127.0.0.1:8099';
(async () => {
  const browser = await chromium.launch({ headless: true });
  const page = await (await browser.newContext()).newPage();
  await page.goto(BASE + '/', { waitUntil: 'load', timeout: 60000 });
  await page.waitForTimeout(7000);

  const result = await page.evaluate(async () => {
    const out = {};
    const dbs = await indexedDB.databases();
    out.databases = dbs.map(d => d.name);
    for (const db of dbs) {
      out[db.name] = [];
      await new Promise((resolve) => {
        const req = indexedDB.open(db.name);
        req.onsuccess = () => {
          const d = req.result;
          const stores = [...d.objectStoreNames];
          out[db.name + '_stores'] = stores;
          if (stores.length === 0) { d.close(); resolve(); return; }
          const tx = d.transaction(stores[0], 'readonly');
          const store = tx.objectStore(stores[0]);
          const allReq = store.getAll();
          const keysReq = store.getAllKeys();
          allReq.onsuccess = () => {
            out[db.name] = allReq.result.map((v, i) => {
              let hex = '';
              if (v instanceof ArrayBuffer) {
                const u = new Uint8Array(v);
                hex = Array.from(u.slice(0, 40)).map(b => b.toString(16).padStart(2,'0')).join(' ');
                return { key: keysReq.result[i], valueBytes: v.byteLength, hexFirst40: hex };
              }
              return { key: keysReq.result[i], value: typeof v === 'string' ? v.slice(0,80) : v };
            });
          };
          tx.oncomplete = () => { d.close(); resolve(); };
        };
        req.onerror = () => resolve();
      });
    }
    return out;
  });
  console.log(JSON.stringify(result, null, 2));
  await browser.close();
})().catch(e => { console.error('失败:', e.message); process.exit(1); });