require('dotenv').config();
// import uploadRoutes from "./routes/upload.routes"; 
const uploadRoutes = require("./routes/upload.routes");

const express = require('express');
const cors = require('cors');
const helmet = require('helmet');
const morgan = require('morgan');
const cookieParser = require('cookie-parser');

const {
  initializeDatabases,
  closeDatabaseConnections,
} = require('./config/database');
const { errorHandler, notFound } = require('./middleware/errorHandler');

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

// Security middleware
app.use(
  helmet({
    contentSecurityPolicy: false, // Disable for API
    crossOriginEmbedderPolicy: false,
  })
);

// CORS configuration
const corsOptions = {
  origin: process.env.CORS_ORIGIN?.split(',') || [
    'http://localhost:3000',
    'http://localhost:3001',
    'http://localhost:5173',
    'http://localhost:5174',
  ],
  credentials: true,
  methods: ['GET', 'POST', 'PUT', 'DELETE', 'PATCH', 'OPTIONS'],
  allowedHeaders: ['Content-Type', 'Authorization', 'X-Requested-With'],
};

app.use(cors(corsOptions));

// Body parsing middleware
app.use(express.json({ limit: '10mb' }));
app.use(express.urlencoded({ extended: true, limit: '10mb' }));
app.use(cookieParser());

// Logging middleware
if (process.env.NODE_ENV !== 'test') {
  app.use(morgan('combined'));
}

// Health check endpoint
app.get('/health', (req, res) => {
  res.status(200).json({
    status: 'OK',
    timestamp: new Date().toISOString(),
    uptime: process.uptime(),
    environment: process.env.NODE_ENV,
  });
});

// API Routes
app.use('/api/auth', require('./routes/auth'));
app.use('/api/users', require('./routes/users'));
app.use('/api/products', require('./routes/products'));
app.use('/api/orders', require('./routes/orders'));
app.use('/api/wardrobe', require('./routes/wardrobe'));
app.use('/api/delivery',  require('./routes/deliveryRoutes'));
app.use('/api/coupons', require('./routes/couponRoutes'));
app.use('/api/admin', require('./routes/admin'));

app.use('/api/admin/reports', require('./routes/reports'));
app.use('/api/payments', require('./routes/paymentRoutes'));
// Upload route
app.use("/api", uploadRoutes);


// Root endpoint
app.get('/', (req, res) => {
  res.json({
    message: 'Vaishnavi Creation API',
    version: '1.0.0',
    documentation: '/api/docs',
    health: '/health',
  });
});

// Error handling middleware (must be last)
app.use(notFound);
app.use(errorHandler);

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

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

// Start server
const startServer = async () => {
  try {
    // Initialize database connections
    await initializeDatabases();

    // Start the server
    app.listen(PORT, () => {
      console.log(`🚀 Server running on port ${PORT}`);
      console.log(`📚 API Documentation: http://localhost:${PORT}/api/docs`);
      console.log(`🏥 Health Check: http://localhost:${PORT}/health`);
      console.log(`🌍 Environment: ${process.env.NODE_ENV}`);
    });
  } catch (error) {
    console.error('❌ Failed to start server:', error);
    process.exit(1);
  }
};

// Only start server if this file is run directly
if (require.main === module) {
  startServer();
}

module.exports = app;