'use strict';
/**
 * 端到端验收：AI 追加轮之后「行程路线示意」不能只剩一个点。
 *
 * 用真实无头 Chrome 打开站点，注入一份 mock 分析结果与两版方案正文，
 * 直接调用页面里的 refreshRouteFromText / drawRouteMap，读真实 DOM：
 *   - 初版：多点点
 *   - 复现修复前（nearby 清空、不继承）：只剩 1 个
 *   - 修复后（nearby 沿用 + 继承上一版坐标）：恢复多点
 *   - 切换回第 1 版：路线图跟着版本重绘
 *
 * 用法：node tools/verify-route-map-followup.cjs
 */
const { spawn } = require('child_process');
const fs = require('fs');
const path = require('path');
const os = require('os');

const OUT = path.join(__dirname, '..', 'preview');
const CDP_PORT = 9361;
const CHROME = 'C:/Program Files/Google/Chrome/Application/chrome.exe';

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 }));
    });
  }
}

const LAT = 24.32;
const LON = 109.42;
const pt = (name, i) => ({
  name,
  lat: +(LAT + (i % 5) * 0.004).toFixed(4),
  lon: +(LON + Math.floor(i / 5) * 0.004).toFixed(4),
  type: '地点',
});
const SIGHT_NAMES = ['龙潭公园', '马鞍山公园', '窑埠古镇', '柳侯公园', '程阳八寨景区'];
const FOOD_NAMES = ['螺蛳粉老店', '青云菜市', '五星步行街', '水上公交码头', '龙潭公园餐厅'];
const NEARBY = {
  area: '柳州市',
  radiusKm: 8,
  sights: SIGHT_NAMES.map((n, i) => pt(n, i)),
  food: FOOD_NAMES.map((n, i) => pt(n, i + 5)),
};
const ANALYSIS = {
  origin: { name: '河池市金城江区', lat: 24.69562, lon: 108.08091 },
  candidates: [{ id: 'd1', name: '柳州市', lat: LAT, lon: LON, score: 9.1 }],
  timeRange: { start: '2026-11-20', end: '2026-11-21', days: 2 },
  dataNotes: [],
};

const V1 = `# 柳州两日行程

## 方案总览
两天都在柳州市区与近郊，节奏适中。

## 逐日安排
### 第 1 天
上午去 **龙潭公园**、**马鞍山公园**，中午在 **螺蛳粉老店** 吃饭；
下午逛 **窑埠古镇**、**柳侯公园**，傍晚到 **五星步行街** 与 **青云菜市**。
### 第 2 天
去 **程阳八寨景区**、**水上公交码头**，晚上在 **龙潭公园餐厅** 收尾。
`;

const V2 = `# 柳州两日行程（第 2 版：少走路）

## 方案总览
按「少走路」重排：第 1 天压缩成市区一圈，第 2 天只留一个远点。

## 逐日安排
### 第 1 天
上午去龙潭公园、马鞍山公园，中午在螺蛳粉老店吃饭；
下午逛窑埠古镇与柳侯公园，傍晚到五星步行街。
### 第 2 天
只保留程阳八寨景区，删掉水上公交码头与青云菜市（走路太多）。
`;

let server = null;
let chrome = null;

(async () => {
  if (!fs.existsSync(CHROME)) { console.error('找不到 Chrome：' + CHROME); process.exit(1); }
  fs.mkdirSync(OUT, { recursive: true });

  // ---- 服务端（端口可能被占用自动顺延，从启动日志里读真实端口）
  server = spawn(process.execPath, ['server.js'], {
    cwd: path.join(__dirname, '..'),
    stdio: ['ignore', 'pipe', 'pipe'],
  });
  let banner = '';
  server.stdout.on('data', (d) => { banner += d.toString(); });
  server.stderr.on('data', (d) => { banner += d.toString(); });
  await sleep(2800);
  const m = banner.match(/http:\/\/127\.0\.0\.1:(\d+)/);
  if (!m) { console.error('服务端未打印监听地址：' + banner); process.exit(1); }
  const base = `http://127.0.0.1:${m[1]}`;
  console.log('服务端 =', base);

  // ---- 无头 Chrome + CDP
  chrome = spawn(CHROME, [
    '--headless=new', '--disable-gpu', '--hide-scrollbars',
    `--remote-debugging-port=${CDP_PORT}`,
    '--user-data-dir=' + path.join(os.tmpdir(), 'tripverifyroute' + 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:${CDP_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 = (method, params) => browser.send(method, params, 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, 500));
    return r.result?.result?.value;
  };

  // 初始化 mock 状态；强制走「方位示意」分支，保证 SVG 里能数到编号点
  await evalJs(`(() => {
    state.analysis = ${JSON.stringify(ANALYSIS)};
    state.selected = new Set(['d1']);
    state.nearby = ${JSON.stringify(NEARBY)};
    state.ai.amapKey = '';
    if (!state.config) state.config = {};
    state.config.features = { ...(state.config.features || {}), amapRoad: false };
    if (typeof gotoStep === 'function') gotoStep(3);
    window.__V1 = ${JSON.stringify(V1)};
    window.__V2 = ${JSON.stringify(V2)};
    window.__ver1 = { n: 1, text: window.__V1, routePoints: null, routeMissing: [] };
    window.__ver2 = { n: 2, text: window.__V2, routePoints: null, routeMissing: [] };
    return true;
  })()`);

  const readMap = `(() => ({
    points: (state.routePoints || []).length,
    dots: document.querySelectorAll('#routeMap .rm-idx').length,
    note: document.querySelector('#routeNote')?.textContent || '',
    hasSvg: !!document.querySelector('#routeMap .route-svg'),
  }))()`;

  // 1) 初版
  const first = await evalJs(`(async () => {
    await refreshRouteFromText(window.__V1, null, window.__ver1);
    await drawRouteMap();
    return ${readMap};
  })()`);
  console.log('初版        →', first);

  // 2) 复现修复前：追加轮把 nearby 清空、不继承上一版坐标
  const broken = await evalJs(`(async () => {
    state.nearby = null;
    await refreshRouteFromText(window.__V2, null, null);
    await drawRouteMap();
    return ${readMap};
  })()`);
  console.log('修复前追加轮 →', broken);

  // 3) 修复后：nearby 沿用 + 继承上一版坐标
  const fixed = await evalJs(`(async () => {
    state.nearby = ${JSON.stringify(NEARBY)};
    await refreshRouteFromText(window.__V2, window.__ver1.routePoints, window.__ver2);
    await drawRouteMap();
    return ${readMap};
  })()`);
  console.log('修复后追加轮 →', fixed);

  // 4) 通过真实下拉事件切回第 1 版，路线图应跟着重绘
  await evalJs(`(() => {
    state.planVersions = [window.__ver1, window.__ver2];
    state.viewing = 1;
    renderVersionBar();
    const sel = document.querySelector('#versionSelect');
    sel.value = 'v0';
    sel.dispatchEvent(new Event('change', { bubbles: true }));
    return true;
  })()`);
  await sleep(400);
  const switched = await evalJs(readMap);
  console.log('切回第 1 版  →', switched);

  // 截图：路线图区域
  const box = await evalJs(`(() => {
    const r = document.querySelector('#routeMap').getBoundingClientRect();
    return { x: r.x + scrollX, y: r.y + scrollY, width: Math.max(r.width, 640), height: Math.max(r.height, 380) };
  })()`);
  const shot = await S('Page.captureScreenshot', {
    format: 'png', captureBeyondViewport: true,
    clip: { ...box, scale: 1 },
  });
  const shotPath = path.join(OUT, 'preview-route-followup.png');
  fs.writeFileSync(shotPath, Buffer.from(shot.result.data, 'base64'));
  console.log('截图已保存 preview/preview-route-followup.png');

  const fails = [];
  if (first.dots < 2) fails.push('初版路线图点数不足');
  if (broken.dots !== 1) fails.push('未能复现「只剩一个点」（期望 1，实际 ' + broken.dots + '）');
  if (fixed.dots < 2) fails.push('修复后追加轮仍只有一个点');
  if (fixed.points <= broken.points) fails.push('修复后路线点数没有增加');
  if (switched.dots < 2) fails.push('切换版本后路线图未重绘');

  if (fails.length) {
    console.error('\n失败：' + fails.join('；'));
    process.exitCode = 1;
  } else {
    console.log('\n✅ 端到端验收通过：追加轮仍有多个点，版本切换会重绘');
  }
})().catch((e) => {
  console.error(e.stack || e.message);
  process.exitCode = 1;
}).finally(() => {
  if (chrome) { try { chrome.kill(); } catch (e) { /* ignore */ } }
  if (server) { try { server.kill(); } catch (e) { /* ignore */ } }
});