/**
 * Full crawl: Visit each brand page and aggregate all products
 */

import puppeteer, { Page } from 'puppeteer';

const STORE_ID = 'best';

async function sleep(ms: number): Promise<void> {
  return new Promise(resolve => setTimeout(resolve, ms));
}

async function bypassAgeGate(page: Page): Promise<void> {
  const ageGate = await page.$('[data-testid="age-gate-modal"]');
  if (ageGate) {
    const btn = await page.$('[data-testid="age-gate-submit-button"]');
    if (btn) await btn.click();
    await sleep(2000);
  }
}

async function scrollToLoadAll(page: Page): Promise<void> {
  let previousHeight = 0;
  let sameCount = 0;

  for (let i = 0; i < 30; i++) {
    const currentHeight = await page.evaluate(() => document.body.scrollHeight);
    if (currentHeight === previousHeight) {
      sameCount++;
      if (sameCount >= 3) break;
    } else {
      sameCount = 0;
    }
    await page.evaluate(() => window.scrollTo(0, document.body.scrollHeight));
    await sleep(1000);
    previousHeight = currentHeight;
  }
}

async function extractProducts(page: Page): Promise<{ name: string; brand: string; price: string; href: string }[]> {
  return page.evaluate(() => {
    const products: { name: string; brand: string; price: string; href: string }[] = [];
    const seen = new Set<string>();

    document.querySelectorAll('a[href*="/product/"]').forEach(a => {
      const href = a.getAttribute('href') || '';
      const img = a.querySelector('img');
      const h5 = a.querySelector('h5');
      const name = img?.getAttribute('alt') || h5?.textContent?.trim() || '';

      if (!name || seen.has(href)) return;
      seen.add(href);

      // Extract brand from href pattern: /product/{brand}-{product}
      const brandMatch = href.match(/\/product\/([^\/]+)/);
      const productSlug = brandMatch ? brandMatch[1] : '';

      const priceEl = a.querySelector('[class*="price"]');
      const priceMatch = priceEl?.textContent?.match(/\$(\d+(?:\.\d{2})?)/);
      const price = priceMatch ? priceMatch[1] : '';

      products.push({ name, brand: productSlug.split('-')[0] || '', price, href });
    });

    return products;
  });
}

async function main() {
  console.log('='.repeat(60));
  console.log('Full Treez Crawl - All Brands');
  console.log('='.repeat(60));

  const browser = await puppeteer.launch({
    headless: true,
    args: ['--no-sandbox', '--disable-setuid-sandbox'],
  });

  const page = await browser.newPage();
  await page.setViewport({ width: 1920, height: 1080 });

  await page.setRequestInterception(true);
  page.on('request', (req) => {
    if (['image', 'font', 'media'].includes(req.resourceType())) {
      req.abort();
    } else {
      req.continue();
    }
  });

  // Step 1: Go to brands page and extract all brand links
  const brandsUrl = `https://${STORE_ID}.treez.io/onlinemenu/brands?customerType=ADULT`;
  console.log(`\n[1] Getting brand list...`);

  await page.goto(brandsUrl, { waitUntil: 'networkidle2', timeout: 60000 });
  await sleep(3000);
  await bypassAgeGate(page);
  await sleep(2000);

  // Get all brand links from the page
  const brandLinks = await page.evaluate(() => {
    const links: string[] = [];
    const seen = new Set<string>();

    // Get all /brand/ links
    document.querySelectorAll('a[href*="/brand/"]').forEach(a => {
      const href = a.getAttribute('href') || '';
      if (href && !seen.has(href)) {
        seen.add(href);
        links.push(href);
      }
    });

    return links;
  });

  console.log(`Found ${brandLinks.length} brand links: ${brandLinks.join(', ')}`);

  // Step 2: Also extract unique brands from product URLs
  const productBrands = await page.evaluate(() => {
    const brands = new Set<string>();

    document.querySelectorAll('a[href*="/product/"]').forEach(a => {
      const href = a.getAttribute('href') || '';
      // Pattern: /product/{brand}-{product}-...
      // Extract first part before first hyphen that looks like brand
      const match = href.match(/\/product\/([a-z0-9]+(?:-[a-z0-9]+)?)-/i);
      if (match) {
        brands.add(match[1].toLowerCase());
      }
    });

    return Array.from(brands);
  });

  console.log(`Found ${productBrands.length} brands from product URLs`);

  // Step 3: Build full brand URL list
  const allBrandUrls = new Set<string>();

  // Add direct brand links
  brandLinks.forEach(link => {
    if (link.startsWith('/')) {
      allBrandUrls.add(`https://${STORE_ID}.treez.io${link}`);
    } else {
      allBrandUrls.add(link);
    }
  });

  // Add brand URLs from product slugs
  productBrands.forEach(brand => {
    allBrandUrls.add(`https://${STORE_ID}.treez.io/brand/${encodeURIComponent(brand)}`);
  });

  console.log(`Total brand URLs to visit: ${allBrandUrls.size}`);

  // Step 4: Visit each brand page and collect products
  const allProducts = new Map<string, { name: string; brand: string; price: string; href: string }>();
  let visitedBrands = 0;

  for (const brandUrl of allBrandUrls) {
    try {
      const fullUrl = brandUrl.includes('customerType') ? brandUrl : `${brandUrl}?customerType=ADULT`;
      console.log(`\n[${++visitedBrands}/${allBrandUrls.size}] Visiting: ${fullUrl}`);

      await page.goto(fullUrl, { waitUntil: 'networkidle2', timeout: 30000 });
      await sleep(1500);

      // Scroll to load all
      await scrollToLoadAll(page);

      const products = await extractProducts(page);
      console.log(`  Found ${products.length} products`);

      products.forEach(p => {
        if (!allProducts.has(p.href)) {
          allProducts.set(p.href, p);
        }
      });

      console.log(`  Total unique so far: ${allProducts.size}`);

    } catch (error: any) {
      console.log(`  Error: ${error.message.slice(0, 50)}`);
    }

    // Small delay between requests
    await sleep(500);
  }

  // Summary
  console.log('\n' + '='.repeat(60));
  console.log('SUMMARY');
  console.log('='.repeat(60));
  console.log(`Brands visited: ${visitedBrands}`);
  console.log(`Total unique products: ${allProducts.size}`);

  // Count by brand
  const brandCounts: Record<string, number> = {};
  allProducts.forEach(p => {
    brandCounts[p.brand] = (brandCounts[p.brand] || 0) + 1;
  });

  console.log('\nProducts by brand:');
  Object.entries(brandCounts)
    .sort((a, b) => b[1] - a[1])
    .slice(0, 20)
    .forEach(([brand, count]) => {
      console.log(`  ${brand}: ${count}`);
    });

  // Sample products
  console.log('\nSample products:');
  Array.from(allProducts.values()).slice(0, 10).forEach(p => {
    console.log(`  - ${p.name} | ${p.brand} | $${p.price || 'N/A'}`);
  });

  await browser.close();
}

main().catch(console.error);