const fs = require('fs');
const { execSync } = require('child_process');

console.log("Running Lighthouse...");
try {
  execSync('npx lighthouse "https://e-tib.com/de/standorte?v=2" --chrome-flags="--headless --no-sandbox" --output json --output-path ./lh-report.json', { stdio: 'inherit' });
} catch(e) {
  console.log("Lighthouse run failed", e.message);
}

const data = JSON.parse(fs.readFileSync('./lh-report.json', 'utf8'));
const score = data.categories.performance.score * 100;
console.log("\n==================================");
console.log(`PERFORMANCE SCORE: ${score}`);
console.log("==================================\n");

console.log("FAILING METRICS (Score < 1.0):");
Object.values(data.audits).filter(a => a.score !== null && a.score < 1).forEach(a => {
  console.log(`- ${a.id}: ${a.score} (${a.displayValue || 'No display value'})`);
  if (a.details && a.details.items && a.details.items.length > 0) {
    if (a.id === 'image-delivery-insight' || a.id === 'unused-javascript' || a.id === 'modern-image-formats' || a.id === 'uses-responsive-images') {
        console.log("  Items:");
        a.details.items.forEach(item => {
            console.log(`    URL: ${item.url || item.node?.nodeLabel || 'unknown'}`);
            if (item.wastedBytes) console.log(`    Wasted KB: ${item.wastedBytes / 1024}`);
            if (item.wastedMs) console.log(`    Wasted Ms: ${item.wastedMs}`);
        });
    }
  }
});

console.log("\nLCP BREAKDOWN:");
const lcpElement = data.audits['largest-contentful-paint-element'];
if (lcpElement && lcpElement.details && lcpElement.details.items) {
    console.log("LCP Element:", lcpElement.details.items[0].node.snippet);
}