const express = require('express');

function createSystemRouter({ SettingsDB, healthService }) {
  const router = express.Router();

  router.get('/health', (req, res) => {
    const result = healthService.check();
    res.status(result.healthy ? 200 : 503).json({
      success: result.healthy,
      status: result.status,
      uptimeSeconds: Math.floor(process.uptime()),
      timestamp: new Date().toISOString(),
      requestId: req.id,
      checks: result.checks
    });
  });

  router.get('/config', (req, res) => {
    const maxUploadSize = parseInt(SettingsDB.get('max_upload_size') || '10737418240', 10);
    res.json({ success: true, config: { max_upload_size: maxUploadSize } });
  });

  router.get('/public/theme', (req, res) => {
    try {
      const globalTheme = SettingsDB.get('global_theme') || 'dark';
      res.json({ success: true, theme: globalTheme });
    } catch {
      res.json({ success: true, theme: 'dark' });
    }
  });

  return router;
}

module.exports = { createSystemRouter };