const express = require('express');
const fs = require('fs-extra');
const path = require('path');

const router = express.Router();
const SERVER_DIR = process.env.SERVER_DIR || '/mc-server';

function isAuthenticated(req, res, next) {
  if (req.session.user) {
    next();
  } else {
    res.status(401).json({ error: 'Non authentifié' });
  }
}

router.get('/', isAuthenticated, async (req, res) => {
  try {
    const serverPropsFile = path.join(SERVER_DIR, 'server.properties');
    
    if (!await fs.pathExists(serverPropsFile)) {
      return res.status(404).json({ error: 'server.properties non trouvé' });
    }

    const content = await fs.readFile(serverPropsFile, 'utf-8');
    const lines = content.split('\n');
    const properties = {};

    lines.forEach(line => {
      if (line && !line.startsWith('#')) {
        const [key, ...valueParts] = line.split('=');
        properties[key.trim()] = valueParts.join('=').trim();
      }
    });

    res.json({ properties });

  } catch (error) {
    console.error('Erreur serveur:', error);
    res.status(500).json({ error: 'Erreur serveur' });
  }
});

router.post('/update', isAuthenticated, async (req, res) => {
  try {
    const { property, value } = req.body;

    if (!property || value === undefined) {
      return res.status(400).json({ error: 'Données manquantes' });
    }

    const serverPropsFile = path.join(SERVER_DIR, 'server.properties');
    let content = await fs.readFile(serverPropsFile, 'utf-8');
    const lines = content.split('\n');

    let found = false;
    const newContent = lines.map(line => {
      if (line.startsWith(property + '=')) {
        found = true;
        return `${property}=${value}`;
      }
      return line;
    }).join('\n');

    if (!found) {
      content = newContent + '\n' + property + '=' + value;
    } else {
      content = newContent;
    }

    await fs.writeFile(serverPropsFile, content, 'utf-8');
    res.json({ message: 'Propriété mise à jour' });

  } catch (error) {
    console.error('Erreur mise à jour:', error);
    res.status(500).json({ error: 'Erreur serveur' });
  }
});

router.post('/settings', isAuthenticated, async (req, res) => {
  try {
    const { key, value } = req.body;

    if (!key || value === undefined) {
      return res.status(400).json({ error: 'Données manquantes' });
    }

    const serverPropsFile = path.join(SERVER_DIR, 'server.properties');
    let content = await fs.readFile(serverPropsFile, 'utf-8');
    const lines = content.split('\n');

    let found = false;
    const newContent = lines.map(line => {
      if (line.trim() && !line.startsWith('#')) {
        const [lineKey] = line.split('=');
        if (lineKey.trim() === key) {
          found = true;
          return `${key}=${value}`;
        }
      }
      return line;
    }).join('\n');

    if (!found) {
      content = newContent + '\n' + key + '=' + value;
    } else {
      content = newContent;
    }

    await fs.writeFile(serverPropsFile, content, 'utf-8');
    res.json({ message: 'Paramètre mis à jour' });

  } catch (error) {
    console.error('Erreur modification paramètre:', error);
    res.status(500).json({ error: 'Erreur serveur' });
  }
});

module.exports = router;