import 'dotenv/config';
import express from 'express';
import cors from 'cors';
import path from 'path';
import { initDatabase } from './config/database';

// Import routes
import authRoutes from './routes/auth';
import invoiceRoutes from './routes/invoices';
import supplierRoutes from './routes/suppliers';
import purchaseOrderRoutes from './routes/purchaseOrders';
import exportRoutes from './routes/exports';
import dashboardRoutes from './routes/dashboard';
import notificationRoutes from './routes/notifications';

const app = express();
const PORT = parseInt(process.env.PORT || '3001', 10);

// Middleware
app.use(cors({
  origin: process.env.FRONTEND_URL || '*',
  credentials: true,
}));
app.use(express.json({ limit: '50mb' }));
app.use(express.urlencoded({ extended: true, limit: '50mb' }));

// Serve uploaded files
const uploadDir = process.env.UPLOAD_DIR || './uploads';
app.use('/uploads', express.static(path.resolve(uploadDir)));

// API Routes
app.use('/api/auth', authRoutes);
app.use('/api/invoices', invoiceRoutes);
app.use('/api/suppliers', supplierRoutes);
app.use('/api/purchase-orders', purchaseOrderRoutes);
app.use('/api/exports', exportRoutes);
app.use('/api/dashboard', dashboardRoutes);
app.use('/api/notifications', notificationRoutes);

// Health check
app.get('/api/health', (req, res) => {
  res.json({ status: 'ok', timestamp: new Date().toISOString(), version: '1.0.0' });
});

// Serve frontend in production
if (process.env.NODE_ENV === 'production') {
  const frontendPath = path.join(__dirname, '../../frontend/dist');
  app.use(express.static(frontendPath));
  app.get('*', (req, res) => {
    if (!req.path.startsWith('/api')) {
      res.sendFile(path.join(frontendPath, 'index.html'));
    }
  });
}

// Error handling middleware
app.use((err: any, req: express.Request, res: express.Response, next: express.NextFunction) => {
  console.error('Erreur non gérée:', err);
  res.status(500).json({ error: 'Erreur interne du serveur' });
});

// Start server
async function start() {
  try {
    await initDatabase();
    
    app.listen(PORT, '0.0.0.0', () => {
      console.log(`🚀 Serveur Facturation SANTINOVA démarré sur le port ${PORT}`);
      console.log(`📊 API disponible sur http://localhost:${PORT}/api`);
    });
  } catch (error) {
    console.error('❌ Erreur au démarrage:', error);
    process.exit(1);
  }
}

start();