/* CDP runner: attach to running chrome (real time, no virtual time),
   poll the drive page status until DONE/ERROR, then report.
   usage: node tools/cdp_run.mjs [port] [timeoutSec] */
const port = process.argv[2] || '9333';
const timeoutMs = (parseInt(process.argv[3] || '120', 10)) * 1000;

const targets = await (await fetch(`http://127.0.0.1:${port}/json`)).json();
const page = targets.find(t => t.type === 'page');
if (!page) { console.log('no page'); process.exit(1); }

const ws = new WebSocket(page.webSocketDebuggerUrl);
let id = 0;
const pending = new Map();
function send(method, params = {}) {
  return new Promise((res, rej) => {
    const mid = ++id;
    pending.set(mid, { res, rej });
    ws.send(JSON.stringify({ id: mid, method, params }));
  });
}
ws.onmessage = (ev) => {
  const msg = JSON.parse(ev.data);
  if (msg.id && pending.has(msg.id)) {
    const { res, rej } = pending.get(msg.id);
    pending.delete(msg.id);
    msg.error ? rej(new Error(msg.error.message)) : res(msg.result);
  }
};
await new Promise(r => { ws.onopen = r; });

async function evalJs(expr) {
  const r = await send('Runtime.evaluate', { expression: expr, returnByValue: true });
  return r.result ? r.result.value : undefined;
}

const t0 = Date.now();
let last = '';
while (Date.now() - t0 < timeoutMs) {
  await new Promise(r => setTimeout(r, 2000));
  const s = await evalJs(`(document.getElementById('status')||{}).textContent || ''`);
  if (s !== last) { console.log('----\n' + s); last = s; }
  if (/DONE|DRIVE_ERROR/.test(s)) break;
}
console.log('\n===== FINAL =====');
console.log(await evalJs(`(document.getElementById('status')||{}).textContent || ''`));
ws.close();