const express = require('express');
const router = express.Router();

/**
 * @swagger
 * /api/health:
 *   get:
 *     summary: Health check endpoint
 *     description: |
 *       Check the health and status of the API server.
 *       Returns server information including uptime, memory usage, and version.
 *     tags: [Status & Monitoring]
 *     responses:
 *       200:
 *         description: Server is healthy
 *         content:
 *           application/json:
 *             schema:
 *               $ref: '#/components/schemas/HealthResponse'
 *       500:
 *         $ref: '#/components/responses/InternalServerError'
 */
router.get('/health', async (req, res) => {
  try {
    const packageJson = require('../package.json');
    
    res.json({
      status: 'ok',
      timestamp: new Date().toISOString(),
      uptime: process.uptime(),
      memory: process.memoryUsage(),
      version: packageJson.version
    });
  } catch (error) {
    console.error('Health check error:', error);
    res.status(500).json({
      status: 'error',
      timestamp: new Date().toISOString(),
      error: 'Health check failed'
    });
  }
});

module.exports = router;