express-api-kit/src/generateProject.js

🚀 Production-Ready Express API Generator - Create enterprise-grade APIs with authentication, file uploads, cron jobs, database pooling, and advanced security features. Supports MongoDB, MySQL, and PostgreSQL.

const fs = require('fs-extra');
const path = require('path');
const { exec } = require('child_process');

const templatesDir = path.join(__dirname, 'templates');

async function generateProject(projectName, database) {
  const targetDir = path.join(process.cwd(), projectName);
  const template = database === 'MongoDB' ? 'express-mongo-template' : 'express-sql-template';
  const templateDir = path.join(templatesDir, template);

  try {
    if (fs.existsSync(targetDir)) {
      console.error(`❌ Error: Directory '${projectName}' already exists! Choose a different name.`);
      process.exit(1);
    }

    await fs.copy(templateDir, targetDir);
    console.log(`\n✅ Successfully created ${projectName} with ${database} support!\n`);

    const envContent =
      database === 'MongoDB'
        ? `PORT=5000
MONGO_URI=mongodb://localhost:27017/${projectName}
JWT_SECRET=your_jwt_secret_here_minimum_32_characters
EMAIL_USER=your_email@gmail.com
EMAIL_PASS=your_app_password
APP_URL=http://localhost:5000

# MongoDB Connection Pool Settings
MONGO_MAX_POOL_SIZE=10
MONGO_MIN_POOL_SIZE=5
MONGO_MAX_IDLE_TIME=30000
MONGO_SERVER_SELECTION_TIMEOUT=5000
MONGO_SOCKET_TIMEOUT=45000
MONGO_CONNECT_TIMEOUT=10000
MONGO_HEARTBEAT_FREQUENCY=10000
MONGO_READ_PREFERENCE=primary
MONGO_WRITE_CONCERN=majority
MONGO_READ_CONCERN=majority
MONGO_WRITE_TIMEOUT=5000

# Cron Jobs
ENABLE_CRON_JOBS=true

# Node Environment
NODE_ENV=development`
        : `PORT=5000
DB_HOST=localhost
DB_USER=root
DB_PASS=password
DB_NAME=${projectName}
DB_DIALECT=mysql
JWT_SECRET=your_jwt_secret_here_minimum_32_characters
EMAIL_USER=your_email@gmail.com
EMAIL_PASS=your_app_password
APP_URL=http://localhost:5000

# Database Connection Pool Settings
DB_POOL_MAX=5
DB_POOL_MIN=0
DB_POOL_ACQUIRE=30000
DB_POOL_IDLE=10000

# Cron Jobs
ENABLE_CRON_JOBS=true

# Node Environment
NODE_ENV=development`;

    await fs.writeFile(path.join(targetDir, '.env'), envContent);
    console.log('✅ .env file created successfully!');

    console.log('📦 Installing dependencies...');
    exec(`cd ${targetDir} && npm install`, (error, stdout, stderr) => {
      if (error) {
        console.error(`❌ Error installing dependencies: ${error.message}`);
        return;
      }
      console.log(stdout);
      console.error(stderr);
      console.log('✅ Installation complete! You can now run your project.');

      // Display feature information
      console.log('\n🚀 Your project includes these features:');
      console.log('   ✅ Authentication with JWT & Role-based access');
      console.log('   ✅ File upload middleware with validation');
      console.log('   ✅ Database connection pooling');
      console.log('   ✅ Cron job scheduler system');
      console.log('   ✅ Email service integration');
      console.log('   ✅ Request logging & response handler');
      console.log('   ✅ Security & validation middlewares');

      console.log('\n📝 Next steps:');
      console.log('   1. cd ' + projectName);
      console.log('   2. Update .env file with your database credentials');
      console.log('   3. npm run dev');

      // Display the creator message
      console.log(`\n🎉 Project successfully generated by Express API Kit!\n`);
      console.log(`👨‍💻 Developed by: Muhammad Ahmad`);
      console.log(`📢 Support: If you like this tool, give it a star ⭐ on GitHub!\n`);
    });
  } catch (error) {
    console.error('❌ Error creating project:', error);
  }
}

module.exports = generateProject;