const fs = require('fs');
const path = require('path');
const env = process.argv[2] || 'development';
const src = path.join(__dirname, '..', `.env.${env}`);
const dest = path.join(__dirname, '..', '.env');
if (fs.existsSync(src)) {
  fs.copyFileSync(src, dest);
  console.log(`Switched to .env.${env}`);
} else {
  console.error(`Missing .env.${env}`);
  process.exit(1);
}