import { chromium } from 'playwright';
import { mkdirSync, writeFileSync } from 'fs';

const BASE = process.env.BASE || 'http://localhost:3000';
const OUT = process.env.OUT || '/tmp/iphone-se-evidence';
mkdirSync(OUT, { recursive: true });

const PAGES = [
  ['home', '/'],
  ['news-detail', '/news/company-founded'],
  ['news-list', '/news'],
  ['contact', '/contact'],
  // 边界页：404 的 h1 由 opacity-20 改为 text-brand-ink/80，需在 375px 窄屏（`text-8xl` 档）复核
  ['not-found', '/no-such-route-404-check'],
];

const MEASURE = () => {
  const footer = document.querySelector('footer, [data-testid="footer"]');
  let lastTextBottom = 0;
  let label = '';
  if (footer) {
    footer.querySelectorAll('*').forEach((el) => {
      if (el.children.length || !el.textContent.trim()) return;
      const b = el.getBoundingClientRect();
      if (b.height > 0 && b.bottom > lastTextBottom) {
        lastTextBottom = b.bottom;
        label = el.textContent.trim().slice(0, 24);
      }
    });
  }
  const fr = footer ? footer.getBoundingClientRect() : null;
  const banner = document.querySelector('[data-testid="cookie-consent-banner"]');
  const br = banner ? banner.getBoundingClientRect() : null;
  return {
    theme: document.documentElement.getAttribute('data-theme'),
    footerBottomGap: fr && lastTextBottom ? Math.round(fr.bottom - lastTextBottom) : null,
    lastText: label,
    footerBottomVsViewport: fr ? Math.round(fr.bottom - innerHeight) : null,
    bannerTop: br ? Math.round(br.top) : null,
    bannerOverlapsFooter: br && fr ? br.top < fr.bottom : false,
    docScrollW: document.documentElement.scrollWidth,
    clientW: document.documentElement.clientWidth,
  };
};

const browser = await chromium.launch();
const rows = [];
for (const theme of ['dark', 'light']) {
  for (const consent of ['dismissed', 'pending']) {
    const ctx = await browser.newContext({
      viewport: { width: 375, height: 667 },
      deviceScaleFactor: 2,
      isMobile: true,
      hasTouch: true,
      colorScheme: theme,
      ...(consent === 'dismissed'
        ? {
            storageState: {
              cookies: [],
              origins: [
                {
                  origin: BASE,
                  localStorage: [
                    {
                      name: 'novalon-cookie-preferences',
                      value: JSON.stringify({
                        necessary: true,
                        analytics: false,
                        marketing: false,
                        functionality: true,
                        timestamp: 1784284000000,
                      }),
                    },
                  ],
                },
              ],
            },
          }
        : {}),
    });
    const page = await ctx.newPage();
    for (const [name, path] of PAGES) {
      await page.goto(BASE + path, { waitUntil: 'load', timeout: 45000 });
      if (consent === 'pending') await page.waitForTimeout(2600);
      else await page.waitForTimeout(900);
      const tag = `${theme}-${consent}-${name}`;
      await page.screenshot({ path: `${OUT}/se-${tag}.png` });
      // 逐帧滚到底：首页有入场分级动画，内容高度在滚动后才增长，
      // 单次 scrollTo(scrollHeight) 会停在半页，测出的 footer 位置无效。
      await page.evaluate(async () => {
        let last = -1;
        for (let i = 0; i < 12; i += 1) {
          window.scrollTo(0, document.body.scrollHeight);
          await new Promise((r) => setTimeout(r, 220));
          if (Math.round(window.scrollY) === last) break;
          last = Math.round(window.scrollY);
        }
      });
      await page.waitForTimeout(700);
      await page.screenshot({ path: `${OUT}/se-${tag}-footer.png` });
      const m = await page.evaluate(MEASURE);
      rows.push({ tag, ...m });
      console.log(tag.padEnd(28), JSON.stringify(m));
    }
    await ctx.close();
  }
}
await browser.close();

writeFileSync(
  `${OUT}/measurements.json`,
  JSON.stringify(
    {
      generatedAt: new Date().toISOString(),
      target: BASE,
      device: 'iPhone SE 口径仿真：viewport 375x667 / deviceScaleFactor 2 / isMobile+hasTouch / colorScheme 由 CDP 强制',
      caveat: 'Playwright 仿真，非真机；用于复现 R-1/R-3 的布局与叠层判定，不能替代实机验收',
      thresholds: { noHorizontalOverflow: 'docScrollW <= clientW', consentClearsFooter: 'bannerOverlapsFooter === false' },
      rows,
    },
    null,
    2,
  ),
);
console.log(`WROTE ${OUT}/measurements.json (${rows.length} rows)`);