/**
 * ERP Vidrio Templado - Backend
 *
 * Sistema de gestión para plantas de vidrio templado
 *
 * Módulos planificados:
 * - VT-001: Fundamentos (Auth, Users, Tenants)
 * - VT-002: Cotizaciones (Cotizador por m²)
 * - VT-003: Producción (Órdenes de producción)
 * - VT-004: Inventario (Stock vidrio/MP)
 * - VT-005: Corte (Optimización nesting)
 * - VT-006: Templado (Control de hornos)
 * - VT-007: Calidad (QC y certificaciones)
 * - VT-008: Despacho (Logística entregas)
 */

import 'reflect-metadata';
import express from 'express';
import cors from 'cors';
import helmet from 'helmet';
import dotenv from 'dotenv';
import { DataSource } from 'typeorm';

// Payment Terminals Module
import { PaymentTerminalsModule } from './modules/payment-terminals';
import { TenantTerminalConfig } from './modules/payment-terminals/entities/tenant-terminal-config.entity';
import { TerminalPayment } from './modules/payment-terminals/entities/terminal-payment.entity';
import { TerminalWebhookEvent } from './modules/payment-terminals/entities/terminal-webhook-event.entity';

dotenv.config();

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

// Database configuration
const AppDataSource = new DataSource({
  type: 'postgres',
  host: process.env.DB_HOST || 'localhost',
  port: parseInt(process.env.DB_PORT || '5432', 10),
  username: process.env.DB_USER || 'erp_user',
  password: process.env.DB_PASSWORD || 'erp_dev_2026',
  database: process.env.DB_NAME || 'erp_vidrio_templado',
  schema: process.env.DB_SCHEMA || 'public',
  entities: [
    // Payment Terminals
    TenantTerminalConfig,
    TerminalPayment,
    TerminalWebhookEvent,
  ],
  synchronize: process.env.NODE_ENV === 'development',
  logging: process.env.NODE_ENV === 'development',
});

// Middleware
app.use(helmet());
app.use(cors());
app.use(express.json());

// Health check endpoint
app.get('/health', (req, res) => {
  res.json({
    status: 'ok',
    service: 'erp-vidrio-templado-backend',
    version: '0.1.0',
    timestamp: new Date().toISOString(),
    database: AppDataSource.isInitialized ? 'connected' : 'disconnected',
  });
});

// API info endpoint
app.get('/api', (req, res) => {
  res.json({
    name: 'ERP Vidrio Templado API',
    version: '0.1.0',
    description: 'Sistema de gestión para plantas de vidrio templado',
    modules: [
      'VT-001: Fundamentos',
      'VT-002: Cotizaciones',
      'VT-003: Producción',
      'VT-004: Inventario',
      'VT-005: Corte',
      'VT-006: Templado',
      'VT-007: Calidad',
      'VT-008: Despacho',
      'Payment Terminals (MercadoPago, Clip)',
    ],
    endpoints: {
      health: '/health',
      paymentTerminals: '/api/payment-terminals',
      mercadopago: '/api/mercadopago',
      clip: '/api/clip',
    },
    status: 'scaffold - en desarrollo',
  });
});

// Bootstrap function
async function bootstrap() {
  try {
    // Initialize database
    await AppDataSource.initialize();
    console.log('📦 Database connection established');

    // Initialize Payment Terminals Module
    const paymentTerminals = new PaymentTerminalsModule({ dataSource: AppDataSource });
    app.use('/api', paymentTerminals.router);
    app.use('/webhooks', paymentTerminals.webhookRouter);
    console.log('💳 Payment Terminals module initialized');

    // 404 handler
    app.use((req, res) => {
      res.status(404).json({ error: 'Not Found' });
    });

    // Error handler
    app.use((err: Error, _req: express.Request, res: express.Response, _next: express.NextFunction) => {
      console.error(err.stack);
      res.status(500).json({
        error: 'Internal Server Error',
        message: process.env.NODE_ENV === 'development' ? err.message : undefined,
      });
    });

    // Start server
    app.listen(PORT, () => {
      console.log(`🔷 ERP Vidrio Templado backend running on port ${PORT}`);
      console.log(`📊 Environment: ${process.env.NODE_ENV || 'development'}`);
      console.log(`🏥 Health check: http://localhost:${PORT}/health`);
      console.log(`📚 API Root: http://localhost:${PORT}/api`);
    });
  } catch (error) {
    console.error('Failed to start server:', error);
    process.exit(1);
  }
}

// Start application
if (require.main === module) {
  bootstrap();
}

export { app, AppDataSource };