const { chromium } = require('playwright');
const path = require('path');
const fs   = require('fs');

const BASE  = 'http://localhost:3000';
const OUT   = path.join(__dirname, 'frontend/public/screenshots');
if (!fs.existsSync(OUT)) fs.mkdirSync(OUT, { recursive: true });

const PAGES = [
  { name: '01_home',          url: '/',                   label: '홈' },
  { name: '02_guardia',       url: '/solution/guardia',   label: 'GUARDiA 소개' },
  { name: '03_company',       url: '/company/greeting',   label: '회사소개' },
  { name: '04_contact',       url: '/support/contact',    label: '문의하기' },
  { name: '05_news',          url: '/news/press',         label: '뉴스' },
];

const RESULTS = [];

(async () => {
  const browser = await chromium.launch({ headless: true });
  const context = await browser.newContext({
    viewport: { width: 1440, height: 900 },
    locale: 'ko-KR',
  });

  for (const pg of PAGES) {
    const page = await context.newPage();
    const errors = [];
    page.on('console', msg => { if (msg.type() === 'error') errors.push(msg.text()); });
    page.on('pageerror', err => errors.push(err.message));

    const t0 = Date.now();
    let status = 'OK';

    try {
      const resp = await page.goto(BASE + pg.url, { waitUntil: 'networkidle', timeout: 15000 });
      const loadTime = Date.now() - t0;

      // 메인 컨텐츠 대기
      await page.waitForSelector('#root > *', { timeout: 5000 }).catch(() => {});

      // 풀페이지 스크린샷
      const ssPath = path.join(OUT, pg.name + '.png');
      await page.screenshot({ path: ssPath, fullPage: true });

      // 뷰포트 스크린샷 (Above-the-fold)
      const vpPath = path.join(OUT, pg.name + '_viewport.png');
      await page.screenshot({ path: vpPath, fullPage: false });

      // 타이틀, 링크 수 확인
      const title    = await page.title();
      const links    = await page.$$eval('a[href]', els => els.length);
      const images   = await page.$$eval('img', els => els.length);
      const h1Count  = await page.$$eval('h1', els => els.length);

      RESULTS.push({
        page:     pg.label,
        url:      pg.url,
        status:   resp ? resp.status() : 'err',
        loadMs:   loadTime,
        title,
        links,
        images,
        h1:       h1Count,
        errors:   errors.length,
        errorMsgs: errors.slice(0, 3),
        screenshot: ssPath,
      });
      console.log(`[OK] ${pg.label} (${loadTime}ms) — title: "${title}" links:${links} imgs:${images}`);
    } catch (e) {
      status = 'FAIL';
      RESULTS.push({ page: pg.label, url: pg.url, status: 'FAIL', error: e.message });
      console.error(`[FAIL] ${pg.label}: ${e.message}`);
    }

    await page.close();
  }

  // 모바일 홈 스크린샷
  const mobilePage = await context.newPage();
  await mobilePage.setViewportSize({ width: 390, height: 844 });
  await mobilePage.goto(BASE + '/', { waitUntil: 'networkidle', timeout: 15000 }).catch(() => {});
  await mobilePage.screenshot({ path: path.join(OUT, '06_mobile_home.png'), fullPage: false });
  await mobilePage.close();
  console.log('[OK] 모바일 홈 스크린샷 완료');

  await browser.close();

  // 결과 출력
  console.log('\n=== 테스트 결과 요약 ===');
  const passed = RESULTS.filter(r => r.status !== 'FAIL').length;
  console.log(`통과: ${passed}/${RESULTS.length}`);
  RESULTS.forEach(r => {
    if (r.status === 'FAIL') {
      console.log(`  FAIL  ${r.page}: ${r.error}`);
    } else {
      const warn = r.errors > 0 ? ` [콘솔오류 ${r.errors}개]` : '';
      console.log(`  PASS  ${r.page} HTTP${r.status} ${r.loadMs}ms${warn}`);
    }
  });

  // JSON 저장
  fs.writeFileSync(path.join(OUT, 'test-result.json'), JSON.stringify(RESULTS, null, 2));
  console.log(`\n스크린샷 저장 위치: ${OUT}`);
  process.exit(passed === RESULTS.length ? 0 : 1);
})();