index.js

import express from 'express';
import dotenv from 'dotenv';

// Load environment variables from .env file
dotenv.config();

const app = express();
const PORT = process.env.PORT || 3000;

// Middleware for parsing JSON requests
app.use(express.json());

// Basic route
app.get('/', (req, res) => {
  res.json({
    message: 'App is working! 🚀',
    status: 'success',
    timestamp: new Date().toISOString(),
    environment: process.env.NODE_ENV || 'development',
    port: PORT
  });
});

// Health check endpoint
app.get('/health', (req, res) => {
  res.json({
    status: 'healthy',
    uptime: process.uptime(),
    timestamp: new Date().toISOString()
  });
});

// 404 handler
app.use('*', (req, res) => {
  res.status(404).json({
    message: 'Route not found',
    status: 'error',
    path: req.originalUrl
  });
});

// Global error handler
app.use((err, req, res, next) => {
  console.error('Error:', err.message);
  console.error('Stack:', err.stack);
  
  res.status(err.status || 500).json({
    message: 'Internal server error',
    status: 'error',
    ...(process.env.NODE_ENV === 'development' && { error: err.message })
  });
});

// Start the server
app.listen(PORT, () => {
  console.log(`🚀 Server is running on port ${PORT}`);
  console.log(`📍 Environment: ${process.env.NODE_ENV || 'development'}`);
  console.log(`🌐 Access the app at: http://localhost:${PORT}`);
});

// Graceful shutdown
process.on('SIGTERM', () => {
  console.log('👋 SIGTERM received, shutting down gracefully');
  process.exit(0);
});

process.on('SIGINT', () => {
  console.log('👋 SIGINT received, shutting down gracefully');
  process.exit(0);
});