const express = require('express');
const fs = require('fs');
const path = require('path');
const router = express.Router();
const fileUpload = require('express-fileupload');
const authMiddleware = require('../../../Middlewares/authMiddleware');
const { loggers } = require('winston');
const ncp = require('ncp');
const util = require('util');
const ncpAsync = util.promisify(ncp.ncp);
const configFile = fs.readFileSync(path.join(__dirname, '../../../data', 'setup.json'), 'utf-8')
const config = JSON.parse(configFile);
const bodyParser = require('body-parser');
const crypto = require('crypto');
const os = require('os');
const { getUserData, getSetupData } = require('../../../Middlewares/watcherMiddleware');
const { logger, logRequestInfo, ErrorLogger, authLogger } = require('../../../config/logs');

let setupData = getSetupData();
let userData = getUserData();
router.use(bodyParser.json());

const User = require('../../../data/user.json');
const setup = JSON.parse(fs.readFileSync(path.join(__dirname, '../../../data', 'setup.json'), 'utf-8'));

router.get('/', authMiddleware, async (req, res) => {
    try {
        const data = fs.readFileSync(path.join(__dirname, '../../../data', 'user.json'), 'utf8');
        const users = JSON.parse(data);

        const user = users.find(user => user.name === req.user.name);

        if (!user || user.role !== 'admin') {
            console.log('Access denied');
            return res.status(403).json({ message: "You do not have the necessary rights to access this resource." });
        }

        // Calculer les stats pour le dashboard admin
        let foldersCount = 0;
        let totalSize = 0;

        try {
            const fileInfoData = fs.readFileSync(path.join(__dirname, '../../../data', 'file_info.json'), 'utf8');
            const fileInfo = JSON.parse(fileInfoData);

            // Compter les dossiers
            users.forEach(u => {
                const userFolderPath = path.join(__dirname, '../../../cdn-files', u.name);
                if (fs.existsSync(userFolderPath)) {
                    const folders = fs.readdirSync(userFolderPath, { withFileTypes: true })
                        .filter(dirent => dirent.isDirectory());
                    foldersCount += folders.length;
                }
            });

            // Calculer l'espace total utilisé
            totalSize = fileInfo.reduce((sum, item) => sum + (item.size || 0), 0);
        } catch (err) {
            console.warn('Could not read file_info.json:', err.message);
        }

        // Stats système
        const uptime = process.uptime();
        const memoryUsage = process.memoryUsage();
        const cpuUsage = process.cpuUsage();

        res.render('paramAdmin', {
            user: user,
            users: User,
            setup: setup,
            stats: {
                foldersCount,
                totalSize,
                uptime,
                memoryUsage: Math.round(memoryUsage.heapUsed / 1024 / 1024), // MB
                cpuUsage: Math.round((cpuUsage.user + cpuUsage.system) / 1000) // ms
            }
        });
    } catch (err) {
        console.error(err);
        res.status(500).send('Server Error');
    }
});

module.exports = router;