server.js

import 'dotenv/config';
import mongoose from 'mongoose';
import app from './src/app.js';
const PORT = process.env.PORT || 5000;

/**
 * Connect to MongoDB and start the Express server
 */
const startServer = async () => {
  try {
    // Check if MONGODB_URI is provided
    if (!process.env.MONGODB_URI) {
      console.error('❌ MONGODB_URI is not defined in environment variables');
      process.exit(1);
    }

    // Connect to MongoDB
    console.log('🔄 Connecting to MongoDB...');
    await mongoose.connect(process.env.MONGODB_URI);
    console.log(`✅ Connected to MongoDB: ${mongoose.connection.name}`);

    // Start Express server
    app.listen(PORT, () => {
      console.log(`🚀 Server is running on port ${PORT}`);
      console.log(`📊 Database: ${mongoose.connection.name}`);
    });

  } catch (error) {
    console.error('❌ Failed to start server:', error.message);
    process.exit(1);
  }
};


// Handle MongoDB connection events
mongoose.connection.on('error', (err) => {
  console.error('❌ MongoDB connection error:', err);
});

mongoose.connection.on('disconnected', () => {
  console.warn('⚠️  MongoDB disconnected');
});

// Graceful shutdown
process.on('SIGINT', async () => {
  console.log('\n🛑 Shutting down server...');
  await mongoose.connection.close();
  console.log('✅ MongoDB connection closed');
  process.exit(0);
});

// Start the server
startServer();