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());

/**
 * @swagger
 * /dashboard/movefile?token={token}:
 *   post:
 *     security:
 *       - bearerAuth: []
 *     tags:
 *       - File
 *     summary: Move file to a different folder
 *     description: This route allows you to move a file to a different folder. It requires a valid JWT token in the Authorization header.
 *     requestBody:
 *       required: true
 *       content:
 *         application/json:
 *           schema:
 *             type: object
 *             properties:
 *               fileName:
 *                 type: string
 *                 description: The name of the file to be moved
 *               folderName:
 *                 type: string
 *                 description: The name of the destination folder
 *     parameters:
 *       - in: header
 *         name: Authorization
 *         required: true
 *         schema:
 *           type: string
 *         description: The JWT token of your account to have access
 *     responses:
 *       200:
 *         description: Success
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *               properties:
 *                 message:
 *                   type: string
 *       400:
 *         description: Bad Request
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *               properties:
 *                 error:
 *                   type: string
 *       401:
 *         description: Unauthorized
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *               properties:
 *                 message:
 *                   type: string
 *       403:
 *         description: Unauthorized directory access attempt
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *               properties:
 *                 error:
 *                   type: string
 *       500:
 *         description: Error moving the file
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *               properties:
 *                 error:
 *                   type: string
 */

function authenticateToken(req, res, next) {
    let token = null;
    const authHeader = req.headers['authorization'];
  
    if (authHeader) {
      token = authHeader.split(' ')[1];
    } else if (req.query.token) {
      token = req.query.token;
    }
  
    if (token == null) {
      if (req.user) {
        return next();
      } else {
        return res.status(401).json({ message: 'Unauthorized' });
      }
    }
  
    fs.readFile(path.join(__dirname, '../../../data', 'user.json'), 'utf8', (err, data) => {
      if (err) {
        console.error('Error reading user.js:', err);
        return res.status(401).json({ message: 'Unauthorized' });
      }
  
      const users = JSON.parse(data);
  
      const user = users.find(u => u.token === token);
  
      if (user) {
        req.user = user;
        req.userData = user;
        next();
      } else {
        return res.status(401).json({ message: 'Unauthorized' });
      }
    });
}
  
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('/', authenticateToken, async (req, res) => {
    console.log('MoveFile API - Raw request body:', req.body);
    console.log('MoveFile API - Request body keys:', Object.keys(req.body));
    
    const fileName = req.body.fileName;
    const folderName = req.body.folderName;

    console.log('MoveFile API - Received data:', {
        fileName: fileName,
        folderName: folderName,
        typeOfFileName: typeof fileName,
        typeOfFolderName: typeof folderName,
        fileNameStringified: JSON.stringify(fileName),
        folderNameStringified: JSON.stringify(folderName),
        fullBody: req.body
    });

    // Forcer la conversion en string si ce sont des objets
    let finalFileName = fileName;
    let finalFolderName = folderName;
    
    if (typeof fileName === 'object' && fileName !== null) {
        console.log('fileName is an object, attempting conversion:', fileName);
        finalFileName = String(fileName);
        console.log('Converted fileName to:', finalFileName, typeof finalFileName);
    }
    
    if (typeof folderName === 'object' && folderName !== null) {
        console.log('folderName is an object, attempting conversion:', folderName);
        finalFolderName = String(folderName);
        console.log('Converted folderName to:', finalFolderName, typeof finalFolderName);
    }

    if (!finalFileName || (typeof finalFileName === 'string' && finalFileName.trim() === '')) {
        return res.status(400).json({ error: 'No file selected for moving.' });
    }

    // Vérifier que folderName est une chaîne de caractères
    if (finalFolderName && typeof finalFolderName !== 'string') {
        console.error('folderName is not a string after conversion:', finalFolderName, typeof finalFolderName);
        return res.status(400).json({ error: 'Invalid folder name format.' });
    }

    try {
        const data = await fs.promises.readFile(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).json({ error: 'Error moving the file.' });
        }

        const userId = user.name;

        if (!finalFileName || !userId) {
            console.error('finalFileName or userId is undefined');
            return res.status(500).json({ error: 'Error moving the file.' });
        }

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

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

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

        if (!destinationPath.startsWith(path.join('cdn-files', userId))) {
            return res.status(403).json({ error: 'Unauthorized: Cannot move file outside of user directory.' });
        }

        const normalizedSourcePath = path.normalize(sourcePath);

        if (fs.existsSync(normalizedSourcePath)) {
            await fs.promises.access(destinationDir);
            await ncpAsync(normalizedSourcePath, destinationPath);
            await fs.promises.unlink(normalizedSourcePath);
        } else {
            return res.status(404).json({ error: 'File not found.' });
        }

        res.status(200).json({ message: 'File moved successfully' });
    } catch (err) {
        console.error(err);
        return res.status(500).json({ error: 'Error moving the file.' });
    }
});

router.post('/:folderName', authenticateToken, async (req, res) => {
    const fileName = req.body.fileName;
    let newFolderName = req.body.newFolderName;
    const oldFolderName = req.params.folderName;
    const userName = req.body.userName;

    if (newFolderName === 'root') {
        newFolderName = '';
    }

    if (fileName === undefined || userName === undefined || oldFolderName === undefined || newFolderName === undefined) {
        console.error('fileName, userName, oldFolderName, or newFolderName is undefined');
        return res.status(500).json({ error: 'Error moving the file.' });
    }

    if (userName !== req.user.name) {
        return res.status(403).json({ error: 'Unauthorized: Cannot move files for other users.' });
    }

    const userDir = path.join(process.cwd(), 'cdn-files', userName);
    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).json({ error: 'Unauthorized directory access attempt' });
    }

    try {
        const normalizedSourcePath = path.normalize(sourcePath);

        if (fs.existsSync(normalizedSourcePath)) {
            await fs.promises.access(destinationDir, fs.constants.W_OK);
            await fs.promises.rename(normalizedSourcePath, destinationPath);
        } else {
            return res.status(404).json({ error: 'File not found.' });
        }

        res.status(200).json({ message: 'File moved successfully', redirectTo: '/dpanel/dashboard' });
    } catch (err) {
        console.error(err);
        return res.status(500).json({ error: 'Error moving the file.' });
    }
});

module.exports = router;