/**
 * Dogfood UI 审计报告生成器
 *
 * 把 ui-audit.mjs 的多主题探针数据 + hardcoded-color-audit.mjs 的静态扫描结果，
 * 汇总成一份可阅读的 HTML 报告（含截图画廊与逐路由明细），供人工判定与排期。
 *
 * 用法：
 *   node scripts/audit/ui-audit-report.mjs
 *   node scripts/audit/ui-audit-report.mjs --light <dir> --dark <dir> --color <json> --out <dir>
 *   node scripts/audit/ui-audit-report.mjs --notes <html片段文件>   # 注入「根因与修复建议」章节
 *
 * 默认行为：在 dogfood-ui-audit/ 下自动取最新一轮浅色与深色目录，
 * 颜色数据取 dogfood-color-audit/color-audit.json，报告输出到 dogfood-ui-audit/report/index.html
 */

import fs from 'node:fs';
import path from 'node:path';
import { fileURLToPath } from 'node:url';

const __dirname = path.dirname(fileURLToPath(import.meta.url));
const ROOT = path.resolve(__dirname, '../..');
const AUDIT_ROOT = path.join(ROOT, 'dogfood-ui-audit');

// ---------------------------------------------------------------- 参数
function parseArgs(argv) {
  const a = { light: null, dark: null, color: null, out: null, notes: null };
  for (let i = 2; i < argv.length; i++) {
    if (argv[i] === '--notes') a.notes = argv[++i];
    else if (argv[i] === '--light') a.light = argv[++i];
    else if (argv[i] === '--dark') a.dark = argv[++i];
    else if (argv[i] === '--color') a.color = argv[++i];
    else if (argv[i] === '--out') a.out = argv[++i];
  }
  return a;
}

/**
 * 取 AUDIT_ROOT 下最新一轮审计产物目录。
 * 只认 `<ISO时间戳>[-dark]` 命名（目录名字典序 = 时间序），
 * 避免被 logo-compare 一类混入的手工目录顶掉。
 */
function latestDir(predicate) {
  if (!fs.existsSync(AUDIT_ROOT)) return null;
  const dirs = fs.readdirSync(AUDIT_ROOT)
    .filter(n => /^\d{4}-\d{2}-\d{2}T\d{2}-\d{2}-\d{2}(-dark)?$/.test(n))
    .filter(n => fs.statSync(path.join(AUDIT_ROOT, n)).isDirectory())
    .filter(predicate)
    .sort();
  return dirs.length ? path.join(AUDIT_ROOT, dirs[dirs.length - 1]) : null;
}

function loadProbes(dir) {
  if (!dir) return null;
  const f = path.join(dir, 'probes.json');
  if (!fs.existsSync(f)) return null;
  return { dir: path.relative(ROOT, dir), data: JSON.parse(fs.readFileSync(f, 'utf8')) };
}

const esc = s => String(s ?? '')
  .replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;');

// ---------------------------------------------------------------- 聚合
function summarize(run) {
  if (!run) return null;
  const bySev = { P1: 0, P2: 0, P3: 0, INFO: 0 };
  const byCat = {};
  const routes = new Map();
  let contrastTotal = 0, pageErrors = 0, consoleErrors = 0, failedReq = 0;
  let touchTotal = 0, altTotal = 0, labelTotal = 0, noFocusTotal = 0, clipTotal = 0;
  const lcpList = [], clsList = [], loadList = [];
  const worst = { contrast: null, overflow: null, cls: null };

  for (const r of run.data) {
    const counts = { P1: 0, P2: 0, P3: 0 };
    for (const i of (r.issues || [])) {
      counts[i.sev] = (counts[i.sev] || 0) + 1;
      bySev[i.sev] = (bySev[i.sev] || 0) + 1;
      byCat[i.cat] = (byCat[i.cat] || 0) + 1;
    }
    routes.set(r.route, counts);

    for (const vpName of Object.keys(r.viewports || {})) {
      const v = r.viewports[vpName] || {};
      const p = v.probe || {};
      const nC = (p.contrast || []).length;
      contrastTotal += nC;
      for (const c of (p.contrast || [])) {
        if (!worst.contrast || c.ratio < worst.contrast.ratio) worst.contrast = { ...c, route: r.route, vp: vpName };
      }
      if (p.overflow?.doc) {
        const delta = p.overflow.doc.delta;
        if (!worst.overflow || delta > worst.overflow.delta)
          worst.overflow = { ...p.overflow.doc, route: r.route, vp: vpName };
      }
      pageErrors += (v.pageErrors || []).length;
      consoleErrors += (v.consoleErrors || []).length;
      failedReq += (v.failedRequests || []).length;
      touchTotal += (p.touch || []).filter(t => t.w < 24 || t.h < 24).length;
      altTotal += (p.images || []).length;
      labelTotal += (p.labels || []).length;
      noFocusTotal += ((v.focus || []).filter(f => f.outlineStyle === 'none' && !f.boxShadow)).length;
      clipTotal += (p.clipped || []).length;
      if (v.perf) {
        if (v.perf.lcp) lcpList.push({ route: r.route, vp: vpName, v: v.perf.lcp });
        if (typeof v.perf.cls === 'number') {
          clsList.push({ route: r.route, vp: vpName, v: v.perf.cls });
          if (!worst.cls || v.perf.cls > worst.cls.v) worst.cls = { v: v.perf.cls, route: r.route, vp: vpName };
        }
      }
      if (v.loadMs) loadList.push(v.loadMs);
    }
  }
  const avg = a => (a.length ? Math.round(a.reduce((x, y) => x + y, 0) / a.length) : null);
  const max = a => (a.length ? a.reduce((x, y) => (y.v > x.v ? y : x)) : null);
  return {
    dir: run.dir, bySev, byCat, routes,
    routeCount: run.data.length,
    metrics: {
      contrastTotal, pageErrors, consoleErrors, failedReq, touchTotal,
      altTotal, labelTotal, noFocusTotal, clipTotal,
      lcpAvg: avg(lcpList.map(x => x.v)), lcpMax: max(lcpList),
      clsMax: worst.cls, loadAvg: avg(loadList),
      navErrors: run.data.filter(r => Object.values(r.viewports || {}).some(v => v.navError)).length,
    },
    worst,
  };
}

// ---------------------------------------------------------------- HTML
const SEV_ORDER = ['P1', 'P2', 'P3', 'INFO'];
const SEV_LABEL = {
  P1: 'P1 · 阻断/高危',
  P2: 'P2 · 应修',
  P3: 'P3 · 优化',
  INFO: 'INFO · 环境噪音（不计缺陷）',
};

function issuesBySev(run) {
  const map = { P1: [], P2: [], P3: [], INFO: [] };
  for (const r of run.data) for (const i of (r.issues || [])) (map[i.sev] || (map[i.sev] = [])).push({ route: r.route, ...i });
  return map;
}

/** 把同 message 前缀的问题聚成"共性问题"，避免逐路由刷屏 */
function groupCommon(list) {
  const g = new Map();
  for (const it of list) {
    const key = it.cat + '|' + it.msg.replace(/\d+/g, 'N').replace(/（最低.*?）/g, '');
    if (!g.has(key)) g.set(key, { cat: it.cat, tpl: it.msg.replace(/\d+/g, 'N'), routes: [], samples: [], count: 0 });
    const e = g.get(key);
    e.count++;
    if (e.routes.length < 12) e.routes.push(it.route);
    if (e.samples.length < 3) for (const d of (it.detail || [])) if (e.samples.length < 6) e.samples.push(d);
  }
  return [...g.values()].sort((a, b) => b.count - a.count);
}

function renderScreenshots(run, label) {
  if (!run) return '';
  const shots = [];
  for (const r of run.data) {
    const d = r.viewports?.desktop, m = r.viewports?.mobile;
    if (d?.screenshot) shots.push({ route: r.route, vp: 'desktop', src: d.screenshot });
    if (m?.screenshot) shots.push({ route: r.route, vp: 'mobile', src: m.screenshot });
  }
  if (!shots.length) return '';
  const rel = p => '../' + p.split(path.sep).join('/');
  return `
  <details class="gallery" ${label === '浅色' ? 'open' : ''}>
    <summary>${esc(label)}主题截图（${shots.length} 张）</summary>
    <div class="shot-grid">
      ${shots.map(s => `
      <figure>
        <img loading="lazy" src="${esc(rel(s.src))}" alt="${esc(s.route)} ${esc(s.vp)}">
        <figcaption>${esc(s.route)} <span class="vp">${esc(s.vp)}</span></figcaption>
      </figure>`).join('')}
    </div>
  </details>`;
}

function buildHtml({ light, dark, color, notes }) {
  const L = summarize(light), D = summarize(dark);
  const generatedAt = new Date().toLocaleString('zh-CN', { hour12: false });

  // 深色相对浅色新增的问题面（按路由）
  const newInDark = [];
  if (L && D) {
    for (const [route, dc] of D.routes) {
      const lc = L.routes.get(route) || { P1: 0, P2: 0, P3: 0 };
      const delta = SEV_ORDER.reduce((s, k) => s + ((dc[k] || 0) - (lc[k] || 0)), 0);
      if (delta > 0) newInDark.push({ route, delta, light: lc, dark: dc });
    }
    newInDark.sort((a, b) => b.delta - a.delta);
  }

  const colorRows = (color?.allViolations || []).filter(v => v.sev === 'P0' || v.sev === 'P1');

  // 逐路由对比表
  const allRoutes = new Set([...(L ? L.routes.keys() : []), ...(D ? D.routes.keys() : [])]);
  const routeRows = [...allRoutes].sort().map(route => {
    const lc = L?.routes.get(route) || { P1: 0, P2: 0, P3: 0 };
    const dc = D?.routes.get(route) || { P1: 0, P2: 0, P3: 0 };
    const tot = o => (o.P1 || 0) + (o.P2 || 0) + (o.P3 || 0);
    const detail = (run, route) => (run?.data.find(r => r.route === route)?.issues || [])
      .map(i => `[${i.sev}] ${i.cat} — ${i.msg}`);
    return { route, lc, dc, lt: tot(lc), dt: tot(dc), lIssues: detail(light, route), dIssues: detail(dark, route) };
  });

  const worstContrast = [L, D].filter(Boolean).map(s => s?.worst?.contrast).filter(Boolean)
    .sort((a, b) => a.ratio - b.ratio)[0];

  return `<!DOCTYPE html>
<html lang="zh-CN" data-theme="dark">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Novalon 官网 · Dogfood UI 审计报告</title>
<style>
  :root {
    --bg: #0d1117; --panel: #161b22; --panel-2: #1c2128; --line: #30363d;
    --fg: #e6edf3; --fg-dim: #9198a1; --fg-mute: #6e7681;
    --p1: #f85149; --p2: #d29922; --p3: #58a6ff; --ok: #3fb950; --accent: #c41e3a;
  }
  * { box-sizing: border-box; }
  body { margin:0; background:var(--bg); color:var(--fg);
    font: 15px/1.65 -apple-system, "PingFang SC", "Helvetica Neue", "Microsoft YaHei", sans-serif; }
  .wrap { max-width: 1180px; margin: 0 auto; padding: 40px 24px 96px; }
  h1 { font-size: 28px; margin: 0 0 6px; letter-spacing: .5px; }
  h2 { font-size: 20px; margin: 44px 0 14px; padding-bottom: 8px; border-bottom: 1px solid var(--line); }
  h3 { font-size: 16px; margin: 26px 0 10px; }
  .sub { color: var(--fg-mute); font-size: 13px; }
  .cards { display:grid; grid-template-columns: repeat(auto-fit,minmax(160px,1fr)); gap:12px; margin: 22px 0 8px; }
  .card { background: var(--panel); border:1px solid var(--line); border-radius:10px; padding:14px 16px; }
  .card .n { font-size: 26px; font-weight: 650; line-height:1.2; }
  .card .l { color: var(--fg-dim); font-size: 12.5px; margin-top:2px; }
  .card.p1 .n { color: var(--p1); } .card.p2 .n { color: var(--p2); }
  .card.p3 .n { color: var(--p3); } .card.ok .n { color: var(--ok); }
  table { width:100%; border-collapse: collapse; margin: 10px 0 4px; font-size: 13.5px; }
  th, td { text-align:left; padding: 7px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
  th { color: var(--fg-dim); font-weight: 600; background: var(--panel-2); position: sticky; top: 0; }
  td code, .mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12.5px; }
  .tag { display:inline-block; padding: 1px 7px; border-radius: 20px; font-size: 11.5px; font-weight: 600; }
  .t-P1 { background: rgba(248,81,73,.15); color: var(--p1); border:1px solid rgba(248,81,73,.35); }
  .t-P2 { background: rgba(210,153,34,.15); color: var(--p2); border:1px solid rgba(210,153,34,.35); }
  .t-P3 { background: rgba(88,166,255,.15); color: var(--p3); border:1px solid rgba(88,166,255,.35); }
  .t-INFO { background: rgba(139,148,158,.15); color: #8b949e; border:1px solid rgba(139,148,158,.35); }
  .muted { color: var(--fg-mute); }
  .panel { background: var(--panel); border:1px solid var(--line); border-radius:10px; padding: 16px 18px; margin: 14px 0; }
  ul.tight { margin: 6px 0; padding-left: 20px; }
  ul.tight li { margin: 3px 0; }
  details.gallery { margin: 12px 0; border:1px solid var(--line); border-radius:10px; background: var(--panel); }
  details.gallery > summary { padding: 12px 16px; cursor: pointer; font-weight: 600; }
  .shot-grid { display:grid; grid-template-columns: repeat(auto-fill,minmax(210px,1fr)); gap:12px; padding: 4px 16px 16px; }
  .shot-grid figure { margin:0; }
  .shot-grid img { width:100%; border:1px solid var(--line); border-radius:6px; background:#fff; display:block; }
  .shot-grid figcaption { font-size: 12px; color: var(--fg-dim); margin-top:5px; }
  .vp { color: var(--fg-mute); }
  .split { display:grid; grid-template-columns: 1fr 1fr; gap: 16px; }
  @media (max-width: 820px) { .split { grid-template-columns: 1fr; } }
  .kv { color: var(--fg-dim); }
  .warn { border-left: 3px solid var(--p2); background: rgba(210,153,34,.08); padding: 10px 14px; border-radius: 0 8px 8px 0; margin: 12px 0; }
  .good { border-left: 3px solid var(--ok); background: rgba(63,185,80,.08); padding: 10px 14px; border-radius: 0 8px 8px 0; margin: 12px 0; }
  a { color: var(--p3); }
  details.route { margin: 4px 0; }
  details.route > summary { cursor:pointer; padding: 4px 0; }
  details.route ul { margin: 4px 0 10px; }
</style>
</head>
<body>
<div class="wrap">

<h1>Novalon 官网 · Dogfood UI 审计报告</h1>
<div class="sub">生成时间 ${esc(generatedAt)} · 数据源：Playwright 真实浏览器探针（多路由 × 多视口 × 浅深双主题）+ 静态硬编码色扫描</div>

<h2>1. 审计范围与结论</h2>
<div class="panel">
  <table>
    <tr><th style="width:24%">项目</th><th>浅色主题</th><th>深色主题</th></tr>
    <tr><td class="kv">数据目录</td><td class="mono">${esc(L?.dir || '-')}</td><td class="mono">${esc(D?.dir || '-')}</td></tr>
    <tr><td class="kv">路由数</td><td>${L?.routeCount ?? '-'}</td><td>${D?.routeCount ?? '-'}</td></tr>
    <tr><td class="kv">视口</td><td colspan="2">desktop 1440×900 · tablet 768×1024（核心页） · mobile 390×844</td></tr>
    <tr><td class="kv">探针维度</td><td colspan="2">对比度 · 横向溢出 · 触控目标 · 图片 alt · 标题层级 · 表单 label · 文本裁剪 · 键盘焦点 · console/网络异常 · LCP/CLS</td></tr>
  </table>
</div>

<div class="cards">
  <div class="card p1"><div class="n">${(L?.bySev.P1 || 0) + (D?.bySev.P1 || 0)}</div><div class="l">P1 高危问题（浅+深）</div></div>
  <div class="card p2"><div class="n">${(L?.bySev.P2 || 0) + (D?.bySev.P2 || 0)}</div><div class="l">P2 应修问题</div></div>
  <div class="card p3"><div class="n">${(L?.bySev.P3 || 0) + (D?.bySev.P3 || 0)}</div><div class="l">P3 优化项</div></div>
  <div class="card"><div class="n" style="color:#8b949e">${(L?.bySev.INFO || 0) + (D?.bySev.INFO || 0)}</div><div class="l">环境噪音（INFO，不计缺陷）</div></div>
  <div class="card ok"><div class="n">${(L?.metrics.navErrors ?? 0) + (D?.metrics.navErrors ?? 0)}</div><div class="l">路由加载失败</div></div>
  <div class="card ok"><div class="n">${(L?.metrics.pageErrors ?? 0) + (D?.metrics.pageErrors ?? 0)}</div><div class="l">未捕获 JS 异常</div></div>
</div>

${((L?.bySev.P1 || 0) + (D?.bySev.P1 || 0)) === 0
    ? '<div class="good"><strong>无 P1 阻断问题。</strong>本次探针未发现加载失败、未捕获异常或致命可用性缺陷；剩余均为分级优化项。</div>'
    : '<div class="warn"><strong>存在 P1 问题，优先处理。</strong>详见第 3 节共性清单。</div>'}

<h2>2. 关键指标</h2>
<div class="split">
  <div class="panel">
    <h3 style="margin-top:0">浅色主题</h3>
    ${L ? metricTable(L) : '<p class="muted">无数据</p>'}
  </div>
  <div class="panel">
    <h3 style="margin-top:0">深色主题</h3>
    ${D ? metricTable(D) : '<p class="muted">无数据</p>'}
  </div>
</div>
${worstContrast ? `<div class="warn"><strong>全局最低对比度</strong>：${esc(worstContrast.ratio)}:1（需 ${esc(worstContrast.need)}:1）
  — <code>${esc(worstContrast.route)}</code> ${esc(worstContrast.vp)} · 元素 <code>${esc(worstContrast.sel)}</code> · 文案「${esc(worstContrast.text)}」</div>` : ''}

<h2>3. 共性问题清单（按影响面排序）</h2>
${[L, D].map((s, i) => s ? `
  <h3>${i === 0 ? '浅色' : '深色'}主题</h3>
  ${SEV_ORDER.map(sev => {
    const list = issuesBySev(i === 0 ? light : dark)[sev];
    if (!list.length) return '';
    const groups = groupCommon(list);
    return `<div class="panel">
      <div style="margin-bottom:6px"><span class="tag t-${sev}">${esc(SEV_LABEL[sev])}</span>
        <span class="muted" style="margin-left:8px">${list.length} 条 · 归为 ${groups.length} 类</span></div>
      <table><tr><th style="width:20%">维度</th><th style="width:52%">问题</th><th>涉及路由</th></tr>
      ${groups.map(g => `<tr><td>${esc(g.cat)}</td><td>${esc(g.tpl)}
          ${g.samples.length ? `<details class="route"><summary class="muted" style="font-size:12px">样本</summary><ul class="tight">${g.samples.slice(0, 4).map(s => `<li class="mono">${esc(s)}</li>`).join('')}</ul></details>` : ''}
        </td><td class="mono muted">${esc(g.routes.join('<br>'))}</td></tr>`).join('')}
      </table></div>`;
  }).join('')}` : '').join('')}

<h2>4. 深色主题专项（暗黑模式成熟度）</h2>
<div class="panel">
  <p style="margin-top:0">深色主题由 Playwright <code>colorScheme: 'dark'</code> 驱动，走项目三态偏好的 system 解析链路，
  与 e2e 视觉回归口径一致；不使用事后 <code>setAttribute('data-theme')</code>（会被挂载效果覆盖）。</p>
  ${newInDark.length ? `
  <table>
    <tr><th>路由</th><th style="width:110px">浅色问题数</th><th style="width:110px">深色问题数</th><th style="width:90px">增量</th></tr>
    ${newInDark.slice(0, 20).map(x => `<tr><td class="mono">${esc(x.route)}</td>
      <td>${(x.light.P1 || 0)}+${(x.light.P2 || 0)}+${(x.light.P3 || 0)}</td>
      <td>${(x.dark.P1 || 0)}+${(x.dark.P2 || 0)}+${(x.dark.P3 || 0)}</td>
      <td style="color:var(--p2)">+${x.delta}</td></tr>`).join('')}
  </table>
  <p class="muted" style="font-size:12.5px">计数格式：P1+P2+P3。增量 &gt; 0 表示该路由在深色下暴露了额外问题（典型为对比度不足、硬编码白底不翻转）。</p>`
    : '<div class="good">深色与浅色问题面一致，未发现深色专属回归。</div>'}
</div>

${notes ? `<h2>5. 根因与修复建议（人工判定）</h2><div class="panel">${notes}</div>` : ''}

<h2>6. 静态硬编码色扫描（暗黑 Phase 2 剩余）</h2>
<div class="panel">
  <p style="margin-top:0">Tailwind 原生 <code>bg-white</code> / <code>bg-gray-*</code> 是硬编码值，深色下不翻转 → 整页恒白。
  扫描 ${esc(color?.scannedFiles ?? '-')} 个文件，命中 <code>P0 ${esc(color?.counts?.P0 ?? '-')}</code> /
  <code>P1 ${esc(color?.counts?.P1 ?? '-')}</code> / <code>INFO ${esc(color?.counts?.INFO ?? '-')}</code>
  <span class="muted">（INFO 多为 <code>bg-white/10</code> 一类半透明叠加，属正确用法，非缺陷）</span></p>
  ${colorRows.length ? `
  <table>
    <tr><th style="width:60px">级别</th><th style="width:44%">文件</th><th style="width:70px">行</th><th style="width:130px">类名</th><th>原因</th></tr>
    ${colorRows.map(v => `<tr>
      <td><span class="tag t-${v.sev}">${esc(v.sev)}</span></td>
      <td class="mono">${esc(v.file)}</td>
      <td class="mono">${esc(v.ln)}</td>
      <td class="mono">${esc(v.cls)}</td>
      <td class="muted">${esc(v.why)}</td></tr>`).join('')}
  </table>
  <p class="muted" style="font-size:12.5px">修复映射约定：<code>bg-bg-primary</code> → 页面/大块骨架；<code>bg-bg-elevated</code> → 带边框的卡片/表单/图标盒。
  浅色下 <code>bg-white</code> 与两者同值 → 改动在浅色主题零像素差异，只修深色。</p>`
    : '<div class="good">无 P0/P1 硬编码色残留。</div>'}
</div>

<h2>7. 逐路由明细</h2>
<div class="panel" style="padding:0;overflow-x:auto">
<table>
  <tr><th style="width:30%">路由</th><th style="width:90px">浅色 P1/P2/P3</th><th style="width:90px">深色 P1/P2/P3</th><th>问题摘要（深色）</th></tr>
  ${routeRows.map(r => `<tr>
    <td class="mono">${esc(r.route)}</td>
    <td>${badge(r.lc)}</td>
    <td>${badge(r.dc)}</td>
    <td class="muted">${r.dIssues.length
      ? `<details class="route"><summary>${esc(r.dIssues.length)} 条</summary><ul class="tight">${r.dIssues.map(x => `<li>${esc(x)}</li>`).join('')}</ul></details>`
      : '<span style="color:var(--ok)">—</span>'}</td>
  </tr>`).join('')}
</table>
</div>

<h2>8. 截图</h2>
${renderScreenshots(light, '浅色')}
${renderScreenshots(dark, '深色')}

<h2>9. 复现方式</h2>
<div class="panel">
<pre class="mono" style="margin:0;white-space:pre-wrap"># 1) 起本地站点（URL 必须是 localhost，127.0.0.1 会被 allowedDevOrigins 拒绝 → chunk 403 → hydration 失败）
npm run dev

# 2) 浅色全站审计
node scripts/audit/ui-audit.mjs

# 3) 深色全站审计（核心页含整页长图）
node scripts/audit/ui-audit.mjs --theme dark --full-page

# 4) 静态硬编码色盘点
node scripts/audit/hardcoded-color-audit.mjs

# 5) 生成本报告
node scripts/audit/ui-audit-report.mjs</pre>
</div>

</div>
</body>
</html>`;
}

function badge(c) {
  const t = (c.P1 || 0) + (c.P2 || 0) + (c.P3 || 0);
  if (!t) return '<span style="color:var(--ok)">0</span>';
  return `<span class="tag t-P1">${c.P1 || 0}</span> <span class="tag t-P2">${c.P2 || 0}</span> <span class="tag t-P3">${c.P3 || 0}</span>`;
}

function metricTable(s) {
  const m = s.metrics;
  return `<table>
    <tr><td class="kv">对比度违规</td><td>${m.contrastTotal}</td></tr>
    <tr><td class="kv">未捕获 JS 异常</td><td>${m.pageErrors}</td></tr>
    <tr><td class="kv">console 错误</td><td>${m.consoleErrors}</td></tr>
    <tr><td class="kv">请求失败</td><td>${m.failedReq}</td></tr>
    <tr><td class="kv">触控目标 &lt;24px</td><td>${m.touchTotal}</td></tr>
    <tr><td class="kv">图片 alt 问题</td><td>${m.altTotal}</td></tr>
    <tr><td class="kv">表单缺 label</td><td>${m.labelTotal}</td></tr>
    <tr><td class="kv">键盘聚焦无指示</td><td>${m.noFocusTotal}</td></tr>
    <tr><td class="kv">文本被裁剪</td><td>${m.clipTotal}</td></tr>
    <tr><td class="kv">LCP 均值 / 最大</td><td>${m.lcpAvg ?? '-'} ms / ${m.lcpMax ? m.lcpMax.v + ' ms（' + m.lcpMax.route + ' ' + m.lcpMax.vp + '）' : '-'}</td></tr>
    <tr><td class="kv">CLS 最大</td><td>${m.clsMax ? m.clsMax.v + '（' + m.clsMax.route + '）' : '0'}</td></tr>
    <tr><td class="kv">页面平均加载</td><td>${m.loadAvg ?? '-'} ms</td></tr>
  </table>`;
}

// ---------------------------------------------------------------- main
const args = parseArgs(process.argv);
const lightDir = args.light || latestDir(n => !n.endsWith('-dark'));
const darkDir = args.dark || latestDir(n => n.endsWith('-dark'));
if (process.env.REPORT_DEBUG) {
  console.error('[debug] ROOT =', ROOT);
  console.error('[debug] AUDIT_ROOT =', AUDIT_ROOT, fs.existsSync(AUDIT_ROOT));
  console.error('[debug] lightDir =', lightDir, 'darkDir =', darkDir);
}
const colorFile = args.color || path.join(ROOT, 'dogfood-color-audit', 'color-audit.json');

const light = loadProbes(lightDir);
const dark = loadProbes(darkDir);
const color = fs.existsSync(colorFile) ? JSON.parse(fs.readFileSync(colorFile, 'utf8')) : null;

if (!light && !dark) {
  console.error('未找到任何探针数据（dogfood-ui-audit/ 下无 probes.json）。请先运行 ui-audit.mjs。');
  process.exit(1);
}

const outDir = args.out || path.join(AUDIT_ROOT, 'report');
fs.mkdirSync(outDir, { recursive: true });
const notes = args.notes && fs.existsSync(args.notes) ? fs.readFileSync(args.notes, 'utf8') : null;
const outFile = path.join(outDir, 'index.html');
fs.writeFileSync(outFile, buildHtml({ light, dark, color, notes }));
console.log(`✓ 报告已生成：${path.relative(ROOT, outFile)}`);
console.log(`  浅色数据：${light ? light.dir : '无'}`);
console.log(`  深色数据：${dark ? dark.dir : '无'}`);
console.log(`  颜色数据：${color ? path.relative(ROOT, colorFile) : '无'}`);