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 osUtils = require('os-utils');
const Convert = require('ansi-to-html');
const convert = new Convert()
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." });
        }

        const uptime = os.uptime();
        const memoryUsage = process.memoryUsage().heapUsed / 1024 / 1024;

        osUtils.cpuUsage(function(cpuUsage) {
            fs.readdir('./logs', (err, files) => {
                if (err) {
                    console.error(err);
                    res.status(500).send('Error reading logs');
                    return;
                }

                const logs = files.map(file => {
                    return fs.promises.readFile(path.join('./logs', file), 'utf8')
                        .then(content => {
                            content = convert.toHtml(content);
                            return { name: file, content: content };
                        })
                        .catch(err => {
                            console.error(err);
                        });
                });

                Promise.all(logs).then(completed => {
                    res.render('paramAdminStats&Logs', { users: User, setup: setup, uptime, memoryUsage, cpuUsage, logs: completed });
                });
            });
        });
    } catch (err) {
        console.error(err);
        res.status(500).send('Server Error');
    }
});

module.exports = router;