/**
 * 用真实保存的 Ozon 页面验证采集逻辑（不依赖浏览器）
 * 用法：先 esbuild 打包再 node 运行（见 README / 命令注释）
 */
import { readFileSync } from 'node:fs';
import { join } from 'node:path';
import { extractOzonState } from '../src/collector/ozon-state';
import { extractJsonLd } from '../src/collector/jsonld';
import { toOriginalUrl, toThumbUrl, pickBestFromSrcset } from '../src/collector/url';

class FakeEl {
  id: string;
  attrs: Record<string, string>;
  constructor(id: string, attrs: Record<string, string>) {
    this.id = id;
    this.attrs = attrs;
  }
  getAttribute(name: string): string | null {
    return this.attrs[name] ?? null;
  }
  get textContent(): string {
    return this.attrs['text'] ?? '';
  }
}

function buildFakeDoc(html: string) {
  const stateEls: FakeEl[] = [];
  const re = /<div\s+id="state-([^"]+)"\s+data-state='(.*?)'\s*>/gs;
  let m: RegExpExecArray | null;
  while ((m = re.exec(html))) {
    stateEls.push(new FakeEl('state-' + m[1], { 'data-state': m[2] }));
  }
  const ldEls: FakeEl[] = [];
  const re2 = /<script[^>]*type="application\/ld\+json"[^>]*>(.*?)<\/script>/gs;
  while ((m = re2.exec(html))) {
    ldEls.push(new FakeEl('', { text: m[1] }));
  }
  return {
    querySelectorAll(sel: string): FakeEl[] {
      if (sel === 'div[id^="state-"]') return stateEls;
      if (sel === 'script[type="application/ld+json"]') return ldEls;
      return [];
    },
  };
}

function check(name: string, actual: unknown, expected: unknown): void {
  const a = JSON.stringify(actual);
  const e = JSON.stringify(expected);
  const ok = a === e;
  console.log(`${ok ? '✅' : '❌'} ${name}`);
  if (!ok) {
    console.log('   expected:', e);
    console.log('   actual  :', a);
  }
}

for (const fn of ['../reference/ozon1.html', '../reference/ozon2.html']) {
  console.log(`\n========== ${fn} ==========`);
  const html = readFileSync(join(process.cwd(), fn), 'utf8');
  (globalThis as any).document = buildFakeDoc(html);

  const state = extractOzonState();
  console.log('state:', JSON.stringify({
    title: state.title,
    price: state.price,
    originalPrice: state.originalPrice,
    rating: state.rating,
    reviewCount: state.reviewCount,
    gallery: state.galleryImages.length,
    videos: state.videos,
    variants: state.skuVariants,
    characteristics: state.characteristics,
  }, null, 1));

  const ld = extractJsonLd();
  console.log('jsonld:', JSON.stringify(ld));
}

// ── URL 工具验证 ──
console.log('\n========== url tools ==========');
const rules = [
  { match: /\/wc\d+\//, replace: '/' },
  { match: /\/c\d+\//, replace: '/' },
  { match: /(?<!:)\/{2,}/g, replace: '/' },
  { match: /[?&](width|height|size|quality|w|h)=[^&]+/g, replace: '' },
];
check('wc1000 → 原图', toOriginalUrl('https://ir.ozone.ru/s3/multimedia-1-5/wc1000/9290076089.jpg', rules), 'https://ir.ozone.ru/s3/multimedia-1-5/9290076089.jpg');
check('wc140 → 原图', toOriginalUrl('https://ir.ozone.ru/s3/multimedia-1-q/wc140/9290076002.jpg', rules), 'https://ir.ozone.ru/s3/multimedia-1-q/9290076002.jpg');
check('c50 → 原图', toOriginalUrl('https://ir.ozone.ru/s3/multimedia-1-5/c50/9290076089.jpg', rules), 'https://ir.ozone.ru/s3/multimedia-1-5/9290076089.jpg');
check('原图不变', toOriginalUrl('https://ir.ozone.ru/s3/multimedia-1-5/9290076089.jpg', rules), 'https://ir.ozone.ru/s3/multimedia-1-5/9290076089.jpg');
check('带 query 尺寸', toOriginalUrl('https://cdn.x.com/a.jpg?width=200&h=300', rules), 'https://cdn.x.com/a.jpg');
check('缩略图', toThumbUrl('https://ir.ozone.ru/s3/multimedia-1-5/9290076089.jpg'), 'https://ir.ozone.ru/s3/multimedia-1-5/wc200/9290076089.jpg');
check('已带标记不再缩略', toThumbUrl('https://ir.ozone.ru/s3/multimedia-1-5/wc50/9290076089.jpg'), 'https://ir.ozone.ru/s3/multimedia-1-5/wc50/9290076089.jpg');
check('srcset 取最大', pickBestFromSrcset('https://ir.ozone.ru/s3/a/wc50/1.jpg 1x, https://ir.ozone.ru/s3/a/wc100/1.jpg 2x'), 'https://ir.ozone.ru/s3/a/wc100/1.jpg');

console.log('\n全部验证结束');