import fs from 'fs';
import path from 'path';

const CONTENT_DIR = path.join(process.cwd(), 'content');
const deDir = path.join(CONTENT_DIR, 'de');
const enDir = path.join(CONTENT_DIR, 'en');

function extractComponents(filePath: string): string[] {
  const content = fs.readFileSync(filePath, 'utf8');
  // Match any tag starting with uppercase letter, e.g. <HomeHero or <InteractiveGermanyMap
  const matches = content.match(/<[A-Z][a-zA-Z0-9]*/g) || [];
  return matches.map(m => m.substring(1));
}

function checkParity() {
  const deFiles = fs.readdirSync(deDir).filter(f => f.endsWith('.mdx'));
  let hasErrors = false;

  console.log('🔍 Checking MDX Component Parity between DE and EN...');

  deFiles.forEach(file => {
    const dePath = path.join(deDir, file);
    const enPath = path.join(enDir, file);

    if (!fs.existsSync(enPath)) {
      console.log(`❌ Missing English file: ${file}`);
      hasErrors = true;
      return;
    }

    const deComponents = extractComponents(dePath);
    const enComponents = extractComponents(enPath);

    const deStr = deComponents.join(', ');
    const enStr = enComponents.join(', ');

    if (deStr !== enStr) {
      console.log(`❌ Mismatch in ${file}:`);
      console.log(`   DE components: [${deStr}]`);
      console.log(`   EN components: [${enStr}]`);
      hasErrors = true;
    } else {
      console.log(`✅ ${file} is in perfect parity.`);
    }
  });

  if (!hasErrors) {
    console.log('🎉 PERFECT PARITY DETECTED! All MDX components are identical.');
  }
}

checkParity();