/** 读取当前会话消息的真实状态。用法：node scripts/probe-messages.mjs <port> */

const port = Number(process.argv[2] ?? 9335)

async function main() {
  const list = await (await fetch(`http://127.0.0.1:${port}/json/list`)).json()
  const page = list.filter((t) => t.type === 'page')[0]
  const ws = new WebSocket(page.webSocketDebuggerUrl)
  await new Promise((r) => ws.addEventListener('open', r))
  const send = (method, params = {}) =>
    new Promise((res) => {
      const id = 1
      const h = (e) => {
        const d = JSON.parse(e.data)
        if (d.id === id) {
          ws.removeEventListener('message', h)
          res(d.result)
        }
      }
      ws.addEventListener('message', h)
      ws.send(JSON.stringify({ id, method, params }))
    })

  const r = await send('Runtime.evaluate', {
    expression: `(async () => {
      const sessions = await window.ycode.session.list();
      const current = sessions[0];
      if (!current) return JSON.stringify({ err: 'no session' });
      const msgs = await window.ycode.session.messages(current.id);
      return JSON.stringify({
        sessionId: current.id,
        messages: msgs.slice(-3).map((m) => ({
          role: m.role,
          status: m.status ?? null,
          error: m.error ?? null,
          len: (m.content || '').length,
          tools: (m.tools || []).length
        }))
      });
    })()`,
    returnByValue: true,
    awaitPromise: true
  })
  console.log(JSON.parse(r.result.value))
  ws.close()
}

main().catch((e) => {
  console.error('失败：', e.message)
  process.exit(1)
})