const path = require('path');
const fs = require('fs');
const puppeteer = require('puppeteer-extra');
var StealthPlugin = require('puppeteer-extra-plugin-stealth');
puppeteer.use(StealthPlugin());

// Load all site configs from src/sites/  
var sitesDir = path.join(__dirname, 'src', 'sites');
var jsonFiles = fs.readdirSync(sitesDir).filter(f => f.endsWith('.json'));
var allSites = jsonFiles.map(function(fp) {
  try { 
    var data = JSON.parse(fs.readFileSync(path.join(sitesDir, fp), 'utf8'));
    return data;
  } catch(e) { 
    console.warn('Failed to parse:', fp); 
    return null; 
  }
}).filter(Boolean);

// Find the matching filename for each site config
function findFilenameForSite(url) {
  for (const f of jsonFiles) {
    try {
      var c = JSON.parse(fs.readFileSync(path.join(sitesDir, f), 'utf8'));
      if (c.url === url) return f;
    } catch(e) {}
  }
  return null;
}

console.log('Loaded', allSites.length, 'site configs to validate\n');

(async function() {
  var browser = await puppeteer.launch({
    headless: 'new',
    executablePath: '/Applications/Google Chrome.app/Contents/MacOS/Google Chrome',
    args: ['--no-sandbox', '--disable-setuid-sandbox']
  });

  const CasinoCrawlerClass = require('./src/services/crawler.js');
  var crawler = new CasinoCrawlerClass();

  var goodSites = [];
  var badFilenames = [];  

  for (var i = 0; i < allSites.length; i++) {
    const siteConfig = allSites[i];
    const filename = findFilenameForSite(siteConfig.url);
    
    if (!filename) {
      console.log('[i]' + (i).padEnd(5), '| Missing file for:', siteConfig.name, '| SKIP'); 
      continue;
    }

    let page = null;
    
    try {
      page = await browser.newPage();
      await page.setUserAgent(
        'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36'
      );

      // Navigate — quick timeout to skip slow/bad sites  
      await page.goto(siteConfig.url, { waitUntil: 'domcontentloaded', timeout: 8000 });
      await new Promise(r => setTimeout(r, 2000));
      
      // Get title + body text for checks
      const title = await page.title();
      var sampleText = await page.evaluate(
        () => document.body.innerText.substring(0, 800)
      ).catch(() => '');

      // Rule out non-casino sites / parked domains  
      if (sampleText.toLowerCase().includes('this domain is for sale') ||
          sampleText.toLowerCase().includes('godaddy parking')) {
        console.log('🚫 PARKED    |', filename.padEnd(35), '| ' + title.substring(0, 60));
        badFilenames.push(filename);
        
      } else if (!isCasinoRelated(title, sampleText)) {
        // Not actually a casino review / affiliate site
        console.log('🚫 NOT CASINO|', filename.padEnd(35), '| ' + title.substring(0, 60));  
        badFilenames.push(filename);

      } else if (title.includes('Cloudflare') || 
                 sampleText.toLowerCase().includes('checking your browser')) {
        // Blocked by anti-bot — keep for now but skip extraction  
        console.log('⛔ BLOCKED   |', filename.padEnd(35), '| ' + title.substring(0, 60));
        
      } else {
        var extracted = await crawler.extractCasinoData(page);
        
        if (extracted.length >= 5) {
          console.log('✅ OK           |', filename.padEnd(35), '| Found:', extracted.length, 'casinos');  
          goodSites.push(filename); 
          
        } else if (extracted.length > 0) {
          // Few casinos found — keep but note it
          var names = [];
          for (var j = 0; j < extracted.length; j++) {
            names.push(extracted[j].name || '?');
          }
          console.log('⚠️ FEW          |', filename.padEnd(35), '| Found:', extracted.length, '| First3:', names.join(', ').substring(0, 40));  
          goodSites.push(filename);
          
        } else {
          // Casino-related site but couldn't extract anything — needs different extraction
          console.log('❌ NO DATA   |', filename.padEnd(35), '| ' + title.substring(0, 60));
          badFilenames.push(filename);
        }
      }

    } catch (e) {
      // Timeout or nav failure — delete since this is likely a dead/bad URL  
      console.log('⏱️ TIMEOUT-DEL|', filename.padEnd(35), '| ' + e.message.split('\n')[0].substring(0, 60));
      badFilenames.push(filename);

    } finally {
      if (page) await page.close().catch(() => {});
    }
  }
  
  // Clean up dead JSON files from src/sites/  
  var deletedCount = 0;
  for (var dIdx = 0; dIdx < badFilenames.length; dIdx++) {
    try { fs.unlinkSync(path.join(sitesDir, badFilenames[dIdx])); deletedCount++; 
    } catch(e) { console.warn('Failed to delete', badFilenames[dIdx]); }
  }
  
  console.log('\n========== VALIDATION SUMMARY ==========');
  console.log('✅ Kept:', goodSites.length, 'valid casino review/affiliate sites');
  console.log('🚫 Deleted:', deletedCount, 'junk/parked/timeout files from src/sites/');

  await browser.close();
})();

function isCasinoRelated(title, sample) {
  var check = (title + ' ' + sample).toLowerCase();  
  var keywords = ['casino', 'gambl', 'poker', 'bonus', 'review', 
                  'real money', 'free spin', 'bookie'];
  for (var i = 0; i < keywords.length; i++) {
    if (check.includes(keywords[i])) return true;
  }
  return false;
}