server.js

require('dotenv').config();
const express = require('express');
const cors = require('cors');
const cookieParser = require('cookie-parser');

// Import routes
const authRoutes = require('./routes/authRoutes');
const adminRoutes = require('./routes/adminRoutes');
const teamRoutes = require('./routes/teamRoutes');
const judgeRoutes = require('./routes/judgeRoutes');

const app = express();
const PORT = process.env.PORT || 5000;

// Middleware
app.use(cors({
  origin: process.env.FRONTEND_URL || 'http://localhost:3000',
  credentials: true
}));
app.use(express.json());
app.use(express.urlencoded({ extended: true }));
app.use(cookieParser());

// Request logging (development)
if (process.env.NODE_ENV === 'development') {
  app.use((req, res, next) => {
    console.log(`${req.method} ${req.path}`);
    next();
  });
}

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

// API Routes
app.use('/api/auth', authRoutes);
app.use('/api/admin', adminRoutes);
app.use('/api/teams', teamRoutes);
app.use('/api/judge', judgeRoutes);

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

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

// Start server
app.listen(PORT, () => {
  console.log(`🚀 HackDay Backend running on port ${PORT}`);
  console.log(`📍 Environment: ${process.env.NODE_ENV || 'development'}`);
  console.log(`🌐 CORS enabled for: ${process.env.FRONTEND_URL || 'http://localhost:3000'}`);
});

// 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);
});