const express = require('express');
const router = express.Router();
const path = require('path');
const { checkUpdates } = require('../Middlewares/checkUpdate');
const { applyUpdate, restartCDN } = require('../models/updateManager');
const { logger, ErrorLogger, logRequestInfo } = require('../config/logs');
const util = require('util');
const exec = util.promisify(require('child_process').exec);
const authMiddleware = require('../Middlewares/authMiddleware');
const fs = require('fs');

router.use(express.json());

router.get('/', (req, res) => {
  res.render('acces-denied');
});

router.get('/attachments', (req, res) => {
  res.render('acces-denied');
});

router.get('/checkupdate',authMiddleware, checkUpdates);

router.get('/applyupdate',authMiddleware, async (req, res) => {
  const updateUrl = 'https://apollon.dinawo.fr/api/download/all';
  const updateFolder = path.join(__dirname, '..'); 

  try {
    logger.info('------Before applying the update------');
    await applyUpdate(updateUrl, updateFolder);

    logger.info('------After applying the update------');
    res.json({ 
      success: true, 
      message: 'Mise à jour appliquée avec succès. Pensé à redémarrer le serveur pour que la MàJ soit prise en compte. (systemctl restart cdn).' 
    });
  } catch (error) {
    ErrorLogger.error('Error applying update:', error);

    return res.status(500).json({ success: false, message: 'Erreur lors de l\'application de la mise à jour.' });
  }
});

router.get('/translateAll', async (req, res) => {
  const targetLanguage = req.query.lang || 'en';
  const viewsFolder = path.join(__dirname, '../views');

  try {
    const translatedFiles = [];
    
    const files = fs.readdirSync(viewsFolder);
    for (const file of files) {
      if (file.endsWith('.ejs')) {
        const filePath = path.join(viewsFolder, file);
        const translatedContent = await translateEJSFile(filePath, targetLanguage);

        if (translatedContent !== null) {
          translatedFiles.push({
            fileName: file,
            translatedContent,
          });
        }
      }
    }

    res.json(translatedFiles);
  } catch (error) {
    console.error('Error translating all EJS files :', error.message);
    res.status(500).json({ error: 'Translation mistake' });
  }
});

router.get('/setup', (req, res) => {
  fs.readFile(path.join(__dirname, '../setup.json'), 'utf8', (err, data) => {
    if (err) {
      ErrorLogger.error('Error reading setup.json:', err);
      return res.status(500).json({ success: false, message: 'Error reading setup.json.' });
    }

    const setup = JSON.parse(data);

    if (Object.keys(setup).length === 0 && setup.constructor === Object) {
      res.render('setup', { setup });
    } else {
      res.status(200).json({message: 'The CDN configuration is already done.' });
    }
  });
});

router.post('/setup/save', (req, res) => {
  const setupData = {
    domain: req.body.domain ?? '',
    uptime: req.body.uptime ?? ''
  };

  if (!areAllFieldsEmpty(req.body.ldap)) {
    setupData.ldap = req.body.ldap;
  }

  if (!areAllFieldsEmpty(req.body.discord)) {
    setupData.discord = req.body.discord;
  }

  fs.writeFile(path.join(__dirname, '../setup.json'), JSON.stringify(setupData, null, 2), (err) => {
    if (err) {
      ErrorLogger.error('Error writing to setup.json:', err);
      return res.status(500).json({ success: false, message: 'Error writing to setup.json.' });
    }

    res.json({ success: true, message: 'The configuration data has been saved successfully.' });
  });
});

function areAllFieldsEmpty(obj) {
  return Object.values(obj).every(val => !val);
}

module.exports = router;