'use strict';
/* 验收脚本：真实场景（南宁青秀区出发 → 柳州为目的地）→ 选柳州 → 生成方案 → 检查路线图 */
const { spawn } = require('child_process');
const fs = require('fs');
const path = require('path');

const OUT = path.join(__dirname, '..', 'preview');
const BASE = process.env.BASE || 'http://127.0.0.1:8791';
const CHROME = 'C:/Program Files/Google/Chrome/Application/chrome.exe';

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

async function getWsUrl() {
  const res = await fetch('http://127.0.0.1:9333/json/version');
  return (await res.json()).webSocketDebuggerUrl;
}

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 browser = await CDP.connect(await getWsUrl());
  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: 1400, height: 1700, 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;
  };

  // 1) 直接注入出发地坐标（河池市金城江区），绕过联想
  await evalJs(`(() => {
    state.origin = { name:'河池市金城江区', label:'广西壮族自治区 · 河池市 · 金城江区', lat:24.69562, lon:108.08091, admin1:'广西壮族自治区', country:'中国' };
    document.querySelector('#originInput').value = '河池市金城江区';
    const r = document.querySelector('#radius');
    if (r) { r.value = '250'; r.dispatchEvent(new Event('change',{bubbles:true})); }
    return true;
  })()`);
  await evalJs(`document.querySelector('#analyzeBtn')?.click()`);
  // 分析要跑 20~60s（高德检索 + 天气）
  for (let i = 0; i < 60; i += 1) {
    await sleep(2000);
    const n = await evalJs(`document.querySelectorAll('.dest-card').length`);
    if (n > 0) { console.log('candidates =', n, 'after', (i + 1) * 2, 's'); break; }
  }

  // 2) 找到「柳州市」并勾选它（真实场景：目的地是柳州）
  const picked = await evalJs(`(() => {
    const cards = [...document.querySelectorAll('.dest-card')];
    const hit = cards.find(c => (c.innerText||'').includes('柳州市'));
    if (!hit) return 'NO-LIUZHOU';
    const btn = hit.querySelector('.pick-btn');
    btn.click();
    return 'clicked';
  })()`);
  console.log('pick 柳州市 =', picked);
  await sleep(1500);
  console.log('selected =', await evalJs(`document.querySelector('#selectedCount')?.textContent`));

  // 3) 生成方案
  await evalJs(`document.querySelector('#planBtn')?.click()`);
  for (let i = 0; i < 60; i += 1) {
    await sleep(2000);
    const t = await evalJs(`(document.querySelector('#planOutput')?.innerText||'').length`);
    if (t > 200) { console.log('plan chars =', t, 'after', (i + 1) * 2, 's'); break; }
  }
  await sleep(4000);

  // 4) 检查路线图状态
  const route = await evalJs(`(() => ({
    note: document.querySelector('#routeNote')?.textContent || '',
    legend: document.querySelector('#routeMap .map-legend')?.textContent || '',
    hasImg: !!document.querySelector('#routeMap img'),
    circles: document.querySelectorAll('#routeMap .map-overlay circle').length,
    polyline: !!document.querySelector('#routeMap .map-overlay polyline'),
    names: [...document.querySelectorAll('#routeMap .map-overlay .map-name')].map(t=>t.textContent),
    hints: [...document.querySelectorAll('#routeMap .map-hint')].map(t=>t.textContent.slice(0,90)),
    routePoints: (state.routePoints||[]).map(p=>p.name+'@'+p.lat+','+p.lon),
    missing: state.routeMissing || [],
  }))()`);
  console.log('ROUTE =', JSON.stringify(route, null, 1));

  await evalJs(`gotoStep(3)`);
  await sleep(1200);
  await evalJs(`document.querySelector('#routeMap')?.scrollIntoView({block:'center'})`);
  await sleep(1200);
  const shot = await S('Page.captureScreenshot', { format: 'png' });
  fs.writeFileSync(path.join(OUT, 'route-plan.png'), Buffer.from(shot.result.data, 'base64'));
  console.log('screenshot -> preview/route-plan.png');

  // 单独截路线图区域（clip 按元素文档坐标截，不依赖滚动位置）
  const box = await evalJs(`(() => {
    const el = document.querySelector('#routeMap');
    if (!el) return null;
    const r = el.getBoundingClientRect();
    return { x: r.left + window.scrollX, y: r.top + window.scrollY, width: Math.round(r.width), height: Math.round(r.height) };
  })()`);
  console.log('clip box =', JSON.stringify(box));
  if (box && box.height > 20) {
    const shot2 = await S('Page.captureScreenshot', {
      format: 'png',
      captureBeyondViewport: true,
      clip: { x: Math.max(0, box.x - 8), y: Math.max(0, box.y - 8), width: box.width + 16, height: box.height + 16, scale: 1 },
    });
    fs.writeFileSync(path.join(OUT, 'route-map.png'), Buffer.from(shot2.result.data, 'base64'));
    console.log('screenshot -> preview/route-map.png');
  }

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