#!/usr/bin/env node
/* 三态主题专项验证：日间 / 夜间 / 自动 + iframe 同步。 */
import { readFileSync } from 'fs';
import { join } from 'path';

const ROOT = process.cwd();
const BASE = process.env.REG_BASE || 'http://127.0.0.1:3311';
let fail = 0;
const ok = (condition, message) => {
  console.log((condition ? 'PASS' : 'FAIL') + ' ' + message);
  if (!condition) fail++;
};

const app = readFileSync(join(ROOT, 'site/app.js'), 'utf8');
const index = readFileSync(join(ROOT, 'site/index.html'), 'utf8');
const css = readFileSync(join(ROOT, '.design_library/kole-ui/colors_and_type.css'), 'utf8');
ok(/prefers-color-scheme/.test(app), '静态：支持 prefers-color-scheme');
ok(/localStorage\.setItem\(['"]kole-mode/.test(app), '静态：持久化 kole-mode');
ok(/data-mode="auto"/.test(index), '静态：站点包含自动模式选项');
ok(/id="topbar-mode"/.test(index), '静态：顶栏含主题模式入口');
/* 顶栏菜单块内三态齐全：块内容取到悬浮菜单 id 之前（两个菜单之间只隔 fab-theme / fab-top 两个按钮），
   不设长度窗口 —— 选项之间隔着内联 SVG，窗口大小会随图标改动失真 */
const topbarMenuBlock = index.slice(index.indexOf('id="topbar-mode-menu"'), index.indexOf('id="mode-menu"'));
ok(['light', 'dark', 'auto'].every((m) => topbarMenuBlock.includes(`data-mode="${m}"`)), '静态：顶栏菜单三态齐全');
ok(/html\.kole-dark/.test(css), '静态：暗色令牌入口存在');
/* 默认自动：kole-mode 缺省值必须是 auto —— 静态卡住回退成 light 的回归 */
ok(/var MODE_DEFAULT = 'auto'/.test(app), '静态：模式默认值是 auto');
ok(/'kole-mode'\) \|\| 'auto'/.test(index), '静态：解析期 bootstrap 默认 auto');
ok(index.indexOf("|| 'auto'") < index.indexOf("data.js"), '静态：bootstrap 在 data.js 之前执行（无主题闪烁）');
ok(/<meta name="color-scheme" content="light dark">/.test(index), '静态：声明 color-scheme（原生控件跟随）');

import { probeContrast } from './lib/contrast-probe.mjs';
let chromium;
try {
  ({ chromium } = await import('playwright'));
} catch {
  console.error('[FATAL] 未安装 playwright');
  process.exit(2);
}

const browser = await chromium.launch();
try {
  async function siteCase(colorScheme, storedMode, expectedDark, label) {
    const page = await browser.newPage({ colorScheme });
    await page.addInitScript((mode) => localStorage.setItem('kole-mode', mode), storedMode);
    await page.goto(BASE + '/site/index.html', { waitUntil: 'load', timeout: 15000 });
    await page.waitForTimeout(150);
    const result = await page.evaluate(() => ({
      dark: document.documentElement.classList.contains('kole-dark'),
      stored: localStorage.getItem('kole-mode'),
      menu: document.querySelectorAll('#mode-menu [role="radio"]').length,
      auto: document.querySelector('#mode-menu [data-mode="auto"]')?.getAttribute('aria-checked'),
      iframe: Array.from(document.querySelectorAll('iframe')).every((f) => {
        try { return f.contentDocument?.documentElement.classList.contains('kole-dark') === document.documentElement.classList.contains('kole-dark'); } catch { return true; }
      })
    }));
    ok(result.dark === expectedDark, `${label}：kole-dark=${result.dark}`);
    ok(result.stored === storedMode, `${label}：kole-mode=${result.stored}`);
    ok(result.menu === 3 && result.auto === (storedMode === 'auto' ? 'true' : 'false'), `${label}：模式菜单 ARIA`);
    ok(result.iframe, `${label}：iframe 主题同步`);
    await page.close();
  }

  await siteCase('light', 'auto', false, '自动 + 系统日间');
  await siteCase('dark', 'auto', true, '自动 + 系统夜间');
  await siteCase('dark', 'light', false, '手动日间覆盖系统夜间');
  await siteCase('light', 'dark', true, '手动夜间覆盖系统日间');

  for (const mode of ['light', 'dark']) {
    await chromeContrastCase(mode, '/site/guide', mode + ' · /site/guide');
    await chromeContrastCase(mode, '/site/component/table', mode + ' · /site/component/table');
    await chromeContrastCase(mode, '/site/component/button', mode + ' · /site/component/button');
  }

  /* 站点 chrome 的对比度（亮/暗双模式）：徽章、警告 callout、代码块、侧栏选中态等
     在两种模式下都要过 AA。判据与暗色那份共用 tools/lib/contrast-probe.mjs。 */
  async function chromeContrastCase(mode, route, label) {
    const page = await browser.newPage({ viewport: { width: 1440, height: 1000 } });
    await page.addInitScript((m) => localStorage.setItem('kole-mode', m), mode);
    const resp = await page.goto(BASE + route, { waitUntil: 'networkidle', timeout: 20000 }).catch(() => null);
    const status = resp ? resp.status() : 0;
    ok(status === 200, `${label}：可访问（HTTP ${status}）`);
    if (status !== 200) { await page.close(); return; }
    const isDark = await page.evaluate(() => document.documentElement.classList.contains('kole-dark'));
    ok(isDark === (mode === 'dark'), `${label}：kole-dark=${isDark}`);
    const res = await probeContrast(page);
    ok(res.bad.length === 0, `${label}：chrome 对比度抽查 ${res.checked} 节点` + (res.bad.length ? ' 不足：' + res.bad.join('；') : ''));
    await page.close();
  }


  /* 首次访问（无 kole-mode）：默认 auto，且跟随系统实时生效 */
  const firstRun = await browser.newPage({ colorScheme: 'dark' });
  await firstRun.goto(BASE + '/site/index.html', { waitUntil: 'load', timeout: 15000 });
  await firstRun.waitForTimeout(150);
  const first = await firstRun.evaluate(() => {
    const cur = document.getElementById('mode-current');
    return {
      stored: localStorage.getItem('kole-mode'),
      dark: document.documentElement.classList.contains('kole-dark'),
      auto: document.querySelector('#mode-menu [data-mode="auto"]')?.getAttribute('aria-checked'),
      current: (cur || {}).textContent || '',
      currentLines: cur ? cur.children.length : 0,
      currentEm: cur && cur.querySelector('em') ? cur.querySelector('em').textContent : ''
    };
  });
  ok(first.stored === 'auto', `首访默认：kole-mode=${first.stored}（落盘默认 auto）`);
  ok(first.dark === true, '首访默认：系统夜间时生效夜间');
  ok(first.auto === 'true', '首访默认：菜单选中自动');
  ok(first.currentLines === 2 && first.current.indexOf('自动模式') > -1, `首访默认：菜单头两行（"${first.current.trim().replace(/\s+/g, ' ')}"）`);
  ok(first.currentEm.indexOf('夜间') > -1, `首访默认：第二行标出生效主题（"${first.currentEm}"）`);
  await firstRun.emulateMedia({ colorScheme: 'light' });
  await firstRun.waitForTimeout(120);
  ok(!(await firstRun.locator('html').evaluate((el) => el.classList.contains('kole-dark'))), '首访默认：系统切日间后即时反色');
  await firstRun.close();

  const changing = await browser.newPage({ colorScheme: 'light' });
  await changing.addInitScript(() => localStorage.setItem('kole-mode', 'auto'));
  await changing.goto(BASE + '/site/index.html', { waitUntil: 'load', timeout: 15000 });
  await changing.waitForTimeout(100);
  await changing.emulateMedia({ colorScheme: 'dark' });
  await changing.waitForTimeout(100);
  ok(await changing.locator('html').evaluate((el) => el.classList.contains('kole-dark')), '自动模式：系统切换到夜间即时生效');
  await changing.emulateMedia({ colorScheme: 'light' });
  await changing.waitForTimeout(100);
  ok(!(await changing.locator('html').evaluate((el) => el.classList.contains('kole-dark'))), '自动模式：系统切换到日间即时生效');
  await changing.close();

  const menuPage = await browser.newPage({ colorScheme: 'light' });
  await menuPage.addInitScript(() => localStorage.removeItem('kole-mode'));
  await menuPage.goto(BASE + '/site/index.html', { waitUntil: 'load', timeout: 15000 });
  await menuPage.locator('#fab-mode').click();
  await menuPage.locator('#mode-menu [data-mode="dark"]').click();
  ok(await menuPage.evaluate(() => localStorage.getItem('kole-mode') === 'dark' && document.documentElement.classList.contains('kole-dark')), '菜单选择夜间模式');
  await menuPage.close();

  /* 顶栏选择器：可见、可选、与悬浮菜单互斥、窄屏收成图标 */
  const topbar = await browser.newPage({ colorScheme: 'light', viewport: { width: 1280, height: 800 } });
  await topbar.addInitScript(() => localStorage.removeItem('kole-mode'));
  await topbar.goto(BASE + '/site/index.html', { waitUntil: 'load', timeout: 15000 });
  await topbar.waitForTimeout(150);
  ok(await topbar.locator('#topbar-mode').isVisible(), '顶栏入口：默认可⻅');
  const topbarLabel = (await topbar.locator('#topbar-mode-label').textContent()).trim();
  ok(topbarLabel === '自动模式', `顶栏入口：显示当前模式（"${topbarLabel}"）`);
  await topbar.locator('#topbar-mode').click();
  ok(await topbar.locator('#topbar-mode-menu').isVisible(), '顶栏入口：点开三态菜单');
  ok(await topbar.locator('#topbar-mode-menu [data-mode="auto"]').getAttribute('aria-checked') === 'true', '顶栏菜单：默认选中自动');
  await topbar.locator('#topbar-mode-menu [data-mode="dark"]').click();
  ok(await topbar.evaluate(() => document.documentElement.classList.contains('kole-dark') && localStorage.getItem('kole-mode') === 'dark'), '顶栏菜单：选夜间即生效并落盘');
  ok((await topbar.locator('#topbar-mode-label').textContent()).trim() === '夜间模式', '顶栏入口：模式名同步更新');
  /* 两个入口互斥：顶栏开着时点悬浮按钮，顶栏那份必须收起 */
  await topbar.locator('#topbar-mode').click();
  await topbar.locator('#fab-mode').click();
  ok(await topbar.evaluate(() => document.getElementById('topbar-mode-menu').classList.contains('hidden')
    && !document.getElementById('mode-menu').classList.contains('hidden')), '两个入口互斥：悬浮菜单打开时顶栏菜单收起');
  await topbar.keyboard.press('Escape');
  ok(await topbar.evaluate(() => document.getElementById('mode-menu').classList.contains('hidden')), 'Esc 关闭菜单');
  await topbar.setViewportSize({ width: 900, height: 800 });
  await topbar.waitForTimeout(120);
  const narrow = await topbar.evaluate(() => {
    const label = document.getElementById('topbar-mode-label');
    const trigger = document.getElementById('topbar-mode');
    const navToggle = document.getElementById('nav-toggle');
    return {
      labelHidden: getComputedStyle(label).display === 'none',
      triggerVisible: trigger.getBoundingClientRect().width > 0 && trigger.getBoundingClientRect().right <= window.innerWidth,
      navToggleVisible: getComputedStyle(navToggle).display !== 'none'
    };
  });
  ok(narrow.labelHidden, '窄屏：顶栏模式名收起（仅留图标 + 箭头）');
  ok(narrow.triggerVisible, '窄屏：入口仍在顶栏内可见（未被挤出屏幕）');
  ok(narrow.navToggleVisible, '窄屏：汉堡按钮未被挤掉');
  /* 超窄屏（320px）：顶栏只留品牌标记 / 搜索 / 主题 / 汉堡，语言与框架选择器让位。
     只量顶栏自身：320px 下首页内容（.stat 统计卡）另有 15px 溢出，与本改动无关，
     量整页会把既有问题算到顶栏头上（既有问题已另行记录，不在此处放宽或掩盖）。 */
  await topbar.setViewportSize({ width: 375, height: 700 });
  await topbar.waitForTimeout(120);
  const phone = await topbar.evaluate(() => {
    const shown = (sel) => getComputedStyle(document.querySelector(sel)).display !== 'none';
    const r = document.getElementById('topbar-mode').getBoundingClientRect();
    return {
      themeVisible: shown('#theme-select') && r.right <= window.innerWidth,
      langVisible: shown('#lang-select')
    };
  });
  ok(phone.themeVisible, '375px：主题入口在顶栏可见');
  ok(phone.langVisible, '375px：语言选择器未被牵连隐藏（常见手机宽度仍可切语言）');
  await topbar.setViewportSize({ width: 320, height: 700 });
  await topbar.waitForTimeout(120);
  const tiny = await topbar.evaluate(() => {
    const inner = document.querySelector('.topbar-inner');
    const cs = getComputedStyle(inner);
    const visible = [...inner.children].filter((el) => {
      const s = getComputedStyle(el);
      if (s.display === 'none' || s.position === 'fixed' || s.visibility === 'hidden') return false;
      return el.getBoundingClientRect().width > 0;
    });
    const need = visible.reduce((a, el) => a + el.getBoundingClientRect().width, 0)
      + Math.max(0, visible.length - 1) * parseFloat(cs.gap)
      + parseFloat(cs.paddingLeft) + parseFloat(cs.paddingRight);
    const box = (sel) => document.querySelector(sel).getBoundingClientRect();
    const shown = (sel) => getComputedStyle(document.querySelector(sel)).display !== 'none';
    return {
      topbarOverflow: Math.max(0, Math.ceil(need - document.documentElement.clientWidth)),
      themeVisible: shown('#theme-select') && box('#topbar-mode').right <= window.innerWidth,
      langHidden: !shown('#lang-select'),
      fwHidden: !shown('.fw-select-wrap'),
      navToggleVisible: shown('#nav-toggle')
    };
  });
  ok(tiny.topbarOverflow <= 0, `超窄屏 320px：顶栏自身无横向溢出（溢出 ${tiny.topbarOverflow}px）`);
  ok(tiny.themeVisible, '超窄屏 320px：主题入口仍在顶栏可见');
  ok(tiny.langHidden && tiny.fwHidden, '超窄屏 320px：语言与框架选择器让位（保主题入口）');
  ok(tiny.navToggleVisible, '超窄屏 320px：汉堡按钮保留');
  await topbar.close();

  const switcher = await browser.newPage({ colorScheme: 'light' });
  await switcher.addInitScript(() => localStorage.removeItem('kole-mode'));
  await switcher.goto(BASE + '/frameworks/ThemeSwitcher.html', { waitUntil: 'load', timeout: 15000 });
  const modes = await switcher.locator('.kole-themesw-opt').count();
  ok(modes === 3, 'ThemeSwitcher H5：三种模式');
  ok(await switcher.locator('[data-mode="auto"]').getAttribute('aria-checked') === 'true', 'ThemeSwitcher H5：默认自动');
  await switcher.locator('[data-mode="dark"]').click();
  ok(await switcher.locator('html').evaluate((el) => el.classList.contains('kole-dark')), 'ThemeSwitcher H5：夜间模式生效');
  await switcher.locator('[data-mode="auto"]').click();
  ok(await switcher.locator('[data-mode="auto"]').getAttribute('aria-checked') === 'true', 'ThemeSwitcher H5：自动模式 ARIA');
  await switcher.close();

  const pg = await browser.newPage({ colorScheme: 'dark' });
  await pg.addInitScript(() => localStorage.removeItem('kole-mode'));
  await pg.goto(BASE + '/site/playground.html', { waitUntil: 'load', timeout: 15000 });
  await pg.waitForTimeout(150);
  ok(await pg.locator('html').evaluate((el) => el.classList.contains('kole-dark')), 'playground：默认自动 + 系统夜间生效');
  await pg.close();
} finally {
  await browser.close();
}

console.log(fail ? `THEME VERIFY FAIL (${fail})` : 'THEME VERIFY OK');
process.exit(fail ? 1 : 0);