const fs = require('fs');
const path = require('path');

const srcDir = path.join(__dirname, 'out');
const destDir = path.join(__dirname, '..', 'frontend');

function copyDirSync(src, dest) {
  fs.mkdirSync(dest, { recursive: true });
  const entries = fs.readdirSync(src, { withFileTypes: true });

  for (let entry of entries) {
    const srcPath = path.join(src, entry.name);
    const destPath = path.join(dest, entry.name);

    if (entry.isDirectory()) {
      copyDirSync(srcPath, destPath);
    } else {
      fs.copyFileSync(srcPath, destPath);
    }
  }
}

function cleanDirSync(dir) {
  if (!fs.existsSync(dir)) return;
  const entries = fs.readdirSync(dir, { withFileTypes: true });
  for (let entry of entries) {
    if (entry.name === '.git' || entry.name === '.antigravitycli') continue;
    const fullPath = path.join(dir, entry.name);
    if (entry.isDirectory()) {
      fs.rmSync(fullPath, { recursive: true, force: true });
    } else {
      fs.unlinkSync(fullPath);
    }
  }
}

try {
  console.log('Wiping old static files in frontend/ ...');
  cleanDirSync(destDir);

  console.log('Copying static Next.js assets to frontend/ ...');
  if (fs.existsSync(srcDir)) {
    copyDirSync(srcDir, destDir);
    console.log('Build output synchronization successful!');
  } else {
    console.error('Error: "out/" directory not found. Compile the Next.js build first.');
  }
} catch (err) {
  console.error('Synchronization failed:', err);
}