#!/usr/bin/env node

/**
 * API Antivirus ClamAV
 *
 * Cette API permet de scanner des documents pour détecter les virus
 * en utilisant ClamAV.
 *
 * Port: 3023
 * Domaine: antivir.certificator.4nkweb.com
 */

import express from 'express';
import cors from 'cors';
import dotenv from 'dotenv';
import { scanRouter } from './routes/scan.js';
import { healthRouter } from './routes/health.js';
import { logger } from './logger.js';
import { fileURLToPath } from 'url';
import { dirname, join } from 'path';

// Get the directory of the current module
const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);

// Charger les variables d'environnement
const envPath = join(__dirname, '../.env');
dotenv.config({ path: envPath });

const app = express();
// Port fixe : 3023
const PORT = 3023;
const HOST = process.env.CLAMAV_API_HOST || '0.0.0.0';

// Middleware
app.use(cors());
app.use(express.json({ limit: '100mb' }));
app.use(express.urlencoded({ extended: true, limit: '100mb' }));

// Middleware de logging
app.use((req, res, next) => {
  logger.info(`${req.method} ${req.path}`, {
    ip: req.ip,
    userAgent: req.get('user-agent'),
  });
  next();
});

// Routes
app.use('/', healthRouter);
app.use('/health', healthRouter);
app.use('/api/scan', scanRouter);

// Route racine
app.get('/', (req, res) => {
  res.json({
    service: 'clamav-api',
    version: '1.0.0',
    status: 'running',
    endpoints: {
      health: '/health',
      scan: '/api/scan/buffer',
    },
  });
});

// Gestion des erreurs
app.use((err, req, res, next) => {
  logger.error('Unhandled error', { error: err.message, stack: err.stack });
  res.status(500).json({
    error: 'Internal Server Error',
    message: process.env.NODE_ENV === 'development' ? err.message : 'An error occurred',
  });
});

// Démarrer le serveur
const server = app.listen(PORT, HOST, () => {
  logger.info('ClamAV API server started', {
    host: HOST,
    port: PORT,
    env: process.env.NODE_ENV || 'production',
  });
});

// Gestion de l'arrêt gracieux
process.on('SIGTERM', () => {
  logger.info('SIGTERM received, shutting down gracefully');
  server.close(() => {
    logger.info('Server closed');
    process.exit(0);
  });
});

process.on('SIGINT', () => {
  logger.info('SIGINT received, shutting down gracefully');
  server.close(() => {
    logger.info('Server closed');
    process.exit(0);
  });
});