// 仅连接 CDP 读取 __trae_dbg（配合手动启动的带调试端口实例）
const sleep = ms => new Promise(r => setTimeout(r, ms))
;(async () => {
  let page = null
  for (let i = 0; i < 20 && !page; i++) {
    await sleep(1000)
    try {
      const list = await (await fetch('http://127.0.0.1:9222/json')).json()
      page = (list || []).find(t => t.type === 'page' && /index\.html/.test(t.url || ''))
    } catch {}
  }
  if (!page) { console.log('no page target'); process.exit(1) }
  const ws = new WebSocket(page.webSocketDebuggerUrl)
  await new Promise((res, rej) => { ws.onopen = res; ws.onerror = rej })
  for (let i = 0; i < 10; i++) {
    await sleep(2000)
    const r = await new Promise(resolve => {
      const id = 777 + i
      const onMsg = ev => { const m = JSON.parse(ev.data); if (m.id === id) { ws.removeEventListener('message', onMsg); resolve(m.result) } }
      ws.addEventListener('message', onMsg)
      ws.send(JSON.stringify({ id, method: 'Runtime.evaluate', params: { expression: 'JSON.stringify({dbg: window.__trae_dbg || null, hasNg: !!window.angular, url: location.href})', returnByValue: true } }))
    })
    console.log(`t+${(i + 1) * 2}s`, r.result && r.result.value)
  }
  ws.close()
  process.exit(0)
})()