/* cdp-verify-numalign.mjs — 验证：视频列表数字列（点赞/评论/分享/收藏/时长）右对齐（09-01） */
const CDP = 'http://127.0.0.1:9223';
async function getWs(targetId) {
  const tabs = await (await fetch(CDP + '/json')).json();
  const t = tabs.find((x) => x.id === targetId);
  if (!t) throw new Error('target not found: ' + targetId);
  return t.webSocketDebuggerUrl;
}
function cdp(ws, method, params = {}) {
  return new Promise((resolve, reject) => {
    const id = ++cdp._id;
    const w = new WebSocket(ws);
    const timer = setTimeout(() => { try { w.close(); } catch (e) {} reject(new Error('timeout: ' + method)); }, 30000);
    w.onopen = () => w.send(JSON.stringify({ id, method, params }));
    w.onmessage = (ev) => {
      const m = JSON.parse(ev.data);
      if (m.id !== id) return;
      clearTimeout(timer);
      try { w.close(); } catch (e) {}
      m.error ? reject(new Error(method + ': ' + JSON.stringify(m.error))) : resolve(m.result);
    };
    w.onerror = () => { clearTimeout(timer); reject(new Error('ws error: ' + method)); };
  });
}
cdp._id = 0;
async function evalJs(ws, expr) {
  const r = await cdp(ws, 'Runtime.evaluate', { expression: expr, awaitPromise: true, returnByValue: true });
  if (r.exceptionDetails) throw new Error('eval err: ' + JSON.stringify(r.exceptionDetails).slice(0, 300));
  return r.result && r.result.value;
}
const sleep = (ms) => new Promise((r) => setTimeout(r, ms));
const waitFor = async (ws, expr, timeout = 15000, label = '') => {
  const t0 = Date.now();
  while (Date.now() - t0 < timeout) {
    if (await evalJs(ws, expr)) return true;
    await sleep(300);
  }
  throw new Error('waitFor timeout: ' + label);
};

async function main() {
  const tabs = await (await fetch(CDP + '/json')).json();
  const tab = tabs.find((x) => x.url.includes('localhost:8900')) || tabs.find((x) => x.type === 'page');
  if (!tab) throw new Error('no 8900 tab found');
  const ws = await getWs(tab.id);
  await cdp(ws, 'Page.enable');
  await cdp(ws, 'Runtime.enable');

  let pass = 0, fail = 0;
  const check = (name, cond) => { cond ? pass++ : fail++; console.log((cond ? 'PASS' : 'FAIL') + ' | ' + name); };

  await cdp(ws, 'Page.navigate', { url: 'http://localhost:8900/?v=numalign#/account/3' });
  await waitFor(ws, `!!document.querySelector('.table tbody tr')`, 20000, '视频列表渲染');
  const r = await evalJs(ws, `(() => {
    const ths = [...document.querySelectorAll('.table thead th')];
    const nums = ['点赞', '评论', '分享', '收藏', '时长'];
    const thRes = {};
    ths.forEach((t) => { const txt = t.textContent.trim(); if (nums.includes(txt)) thRes[txt] = getComputedStyle(t).textAlign; });
    const first = document.querySelector('.table tbody tr');
    const tds = first ? [...first.children] : [];
    const tdRes = tds.slice(2, 7).map((td) => ({ txt: td.textContent.trim().slice(0, 10), align: getComputedStyle(td).textAlign }));
    const hasRenderErr = document.body.textContent.includes('渲染失败');
    return { thRes, tdRes, hasRenderErr };
  })()`);
  for (const [name, align] of Object.entries(r.thRes)) check('表头「' + name + '」右对齐（' + align + '）', align === 'right');
  for (const [i, td] of r.tdRes.entries()) check('行第' + (i + 3) + '列(' + td.txt + ')右对齐（' + td.align + '）', td.align === 'right');
  check('无渲染失败', !r.hasRenderErr);

  console.log(`\n结果: ${pass} PASS / ${fail} FAIL`);
  process.exit(fail ? 1 : 0);
}
main().catch((e) => { console.error('ERROR:', e.message); process.exit(1); });