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());

router.get('/', (req, res) => {
    res.status(400).json({ error: 'Bad Request. The request cannot be fulfilled due to bad syntax or missing parameters.' });
});

router.post('/', authMiddleware, async (req, res) => {
    const fileName = req.body.fileName;
    const folderName = req.body.folderName;

    const data = await fs.readFileSync(path.join(__dirname, '../../../data', 'user.json'), 'utf-8')
    const users = JSON.parse(data);
    const user = users.find(user => user.id === req.user.id);

    if (!user) {
        console.error('User not found in user.json');
        return res.status(500).send('Erreur lors du déplacement du fichier.');
    }

    const userId = user.name;

    if (!fileName || !userId) {
        console.error('fileName or userId is undefined');
        return res.status(500).send('Erreur lors du déplacement du fichier.');
    }

    const sourcePath = path.join('cdn-files', userId, fileName);

    let destinationDir;
    if (folderName && folderName.trim() !== '') {
        destinationDir = path.join('cdn-files', userId, folderName);
    } else {
        destinationDir = path.join('cdn-files', userId);
    }

    const destinationPath = path.join(destinationDir, fileName);

    try {
        const normalizedSourcePath = path.normalize(sourcePath);
        console.log('Full Source Path:', normalizedSourcePath);
        
        if (fs.existsSync(normalizedSourcePath)) {
            await fs.promises.access(destinationDir);
            
            await ncpAsync(normalizedSourcePath, destinationPath);
            
            await fs.promises.unlink(normalizedSourcePath);
        } else {
            console.log('File does not exist');
        }

        res.redirect('/dpanel/dashboard');
    } catch (err) {
        console.error(err);
        return res.status(500).send('Erreur lors du déplacement du fichier.');
    }
});

router.post('/:folderName', authMiddleware, async (req, res) => {
    const fileName = req.body.fileName;
    const newFolderName = req.body.folderName;
    const oldFolderName = req.params.folderName; 
    const userId = req.user && req.user._json ? req.userData.name : undefined;

    if (!fileName || !userId || !oldFolderName || !newFolderName) {
        console.error('fileName, userId, oldFolderName, or newFolderName is undefined');
        return res.status(500).send('Erreur lors du déplacement du fichier.');
    }

    const userDir = path.join(process.cwd(), 'cdn-files', userId);
    const sourcePath = path.join(userDir, oldFolderName, fileName);
    const destinationDir = path.join(userDir, newFolderName);
    const destinationPath = path.join(destinationDir, fileName);

    if (!sourcePath.startsWith(userDir) || !destinationPath.startsWith(userDir)) {
        ErrorLogger.error('Unauthorized directory access attempt');
        return res.status(403).send('Unauthorized directory access attempt');
    }

    try {
        const normalizedSourcePath = path.normalize(sourcePath);
        console.log('Full Source Path:', normalizedSourcePath);
        
        if (fs.existsSync(normalizedSourcePath)) {
            await fs.promises.access(destinationDir, fs.constants.W_OK);
            
            await fs.promises.rename(normalizedSourcePath, destinationPath);
        } else {
            console.log('File does not exist');
        }

        res.redirect('/dpanel/dashboard');
    } catch (err) {
        console.error(err);
        return res.status(500).send('Erreur lors du déplacement du fichier.');
    }
});

module.exports = router;