'use strict';
/**
 * 第二步真实数据验收：走完整分析流程（用高德 Key 覆盖），
 * 检查真实候选的分组、搜索、折叠与卡片渲染是否有 undefined。
 */
const { spawn } = require('child_process');
const fs = require('fs');
const path = require('path');
const os = require('os');

const OUT = path.join(__dirname, '..', 'preview');
const BASE = process.env.BASE || 'http://127.0.0.1:8787';
const CHROME = 'C:/Program Files/Google/Chrome/Application/chrome.exe';
const PORT = 9346;

function sleep(ms) { return new Promise((r) => setTimeout(r, ms)); }

class CDP {
  constructor(ws) { this.ws = ws; this.id = 0; this.waits = new Map(); }
  static async connect(url) {
    const ws = new WebSocket(url);
    await new Promise((res, rej) => { ws.onopen = res; ws.onerror = rej; });
    const c = new CDP(ws);
    ws.onmessage = (e) => {
      const m = JSON.parse(e.data);
      if (m.id && c.waits.has(m.id)) { c.waits.get(m.id)(m); c.waits.delete(m.id); }
    };
    return c;
  }
  send(method, params = {}, sessionId) {
    const id = ++this.id;
    return new Promise((res) => {
      this.waits.set(id, res);
      this.ws.send(JSON.stringify({ id, method, params, sessionId }));
    });
  }
}

(async () => {
  const chrome = spawn(CHROME, [
    '--headless=new', '--disable-gpu', '--hide-scrollbars',
    `--remote-debugging-port=${PORT}`,
    '--user-data-dir=' + path.join(os.tmpdir(), 'tripverify2' + Date.now()),
    'about:blank',
  ], { stdio: 'ignore' });

  let wsUrl = null;
  for (let i = 0; i < 30 && !wsUrl; i += 1) {
    await sleep(500);
    try {
      const res = await fetch(`http://127.0.0.1:${PORT}/json/version`);
      wsUrl = (await res.json()).webSocketDebuggerUrl;
    } catch (e) { /* 还没起来 */ }
  }
  if (!wsUrl) { console.error('chrome 未启动'); process.exit(1); }

  const browser = await CDP.connect(wsUrl);
  const { result: { targetId } } = await browser.send('Target.createTarget', { url: 'about:blank' });
  const { result: { sessionId } } = await browser.send('Target.attachToTarget', { targetId, flatten: true });
  const S = (m, p) => browser.send(m, p, sessionId);

  await S('Page.enable');
  await S('Runtime.enable');
  await S('Emulation.setDeviceMetricsOverride', { width: 1280, height: 1400, deviceScaleFactor: 1, mobile: false });
  await S('Page.navigate', { url: BASE });
  await sleep(2500);

  const evalJs = async (expr) => {
    const r = await S('Runtime.evaluate', { expression: expr, awaitPromise: true, returnByValue: true });
    if (r.result?.exceptionDetails) throw new Error(JSON.stringify(r.result.exceptionDetails).slice(0, 400));
    return r.result?.result?.value;
  };

  // 直接调服务端分析接口拿真实候选（避开页面的表单流程）
  const real = await evalJs(`(async () => {
    const res = await fetch('/api/analyze', {
      method: 'POST',
      headers: { 'content-type': 'application/json' },
      body: JSON.stringify({
        origin: { name: '河池市金城江区', lat: 24.69562, lon: 108.08091 },
        startDate: '2026-11-06', endDate: '2026-11-08',
        radiusKm: 150, maxOneWayHours: 2.5, excludeLocal: true,
        transportPrefs: ['不限'], interests: [],
      }),
    });
    const txt = await res.text();
    for (const line of txt.split('\\n')) {
      if (!line.startsWith('data:')) continue;
      const j = JSON.parse(line.slice(5).trim());
      if (j.type === 'result') return j.data;
      if (j.type === 'error') return { error: j.message };
    }
    return { error: 'no result' };
  })()`);
  if (real.error) { console.error('分析失败:', real.error); process.exit(1); }
  console.log('真实候选数 =', real.candidates.length);

  await evalJs(`(() => {
    state.analysis = ${JSON.stringify(real)};
    gotoStep(2); renderStep2(); renderCards();
    return true;
  })()`);
  await sleep(1500);

  const groups = await evalJs(`(() => [...document.querySelectorAll('#cards .place-group')].map(g => ({
    key: g.dataset.place,
    head: g.querySelector('.place-head').innerText.replace(/\\n/g, ' | '),
    items: [...g.querySelectorAll('.dest-card .card-title h4')].map(x => x.textContent),
  })))()`);
  console.log('=== 真实分组 ===');
  for (const g of groups) console.log(' ', g.key, '→', g.items.join(', '), '||', g.head);

  // 检查 undefined
  const undef = await evalJs(`(() => {
    const t = document.querySelector('#cards').innerText;
    const hits = (t.match(/undefined/g) || []).length;
    return { hits, sample: hits ? t.split('\\n').filter(x => x.includes('undefined')).slice(0, 5) : [] };
  })()`);
  console.log('卡片内 undefined 出现次数 =', undef.hits, undef.sample);

  // 搜索
  const kw = groups[0]?.items[0]?.slice(0, 2) || '柳州';
  await evalJs(`(() => { const i = document.querySelector('#candSearch'); i.value='${kw}'; i.dispatchEvent(new Event('input',{bubbles:true})); return true; })()`);
  await sleep(500);
  console.log(`搜索「${kw}」→ 卡片`, await evalJs(`document.querySelectorAll('#cards .dest-card').length`), '/ 提示条:', await evalJs(`document.querySelector('#filterNote')?.innerText`));

  await evalJs(`document.querySelector('#candSearchClear').click()`);
  await sleep(500);

  const box = await evalJs(`(() => { const r = document.querySelector('#panel2').getBoundingClientRect(); return { x: r.x + scrollX, y: r.y + scrollY, width: r.width, height: Math.min(r.height, 2400) }; })()`);
  const shot = await S('Page.captureScreenshot', { format: 'png', captureBeyondViewport: true, clip: { ...box, scale: 1 } });
  fs.writeFileSync(path.join(OUT, 'preview-step2-real.png'), Buffer.from(shot.result.data, 'base64'));
  console.log('截图已保存 preview/preview-step2-real.png');

  browser.ws.close();
  chrome.kill();
  process.exit(0);
})().catch((e) => { console.error('FAIL', e.message); process.exit(1); });