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').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/deletefolder/{folderName}?token={token}:
 *   post:
 *     security:
 *       - bearerAuth: []
 *     tags:
 *       - Folder
 *     summary: Delete a specific file in folder for a user
 *     description: This route allows you to delete a specific file for a user. 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 delete
 *     parameters:
 *       - in: path
 *         name: folderName
 *         required: true
 *         schema:
 *           type: string
 *         description: The name of the folder
 *       - in: header
 *         name: Authorization
 *         required: true
 *         schema:
 *           type: string
 *         description: The JWT token of your account to have access
 *     responses:
 *       200:
 *         description: Folder successfully deleted.
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *               properties:
 *                 deleted:
 *                   type: boolean
 *                 success:
 *                   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: You do not have permission to delete this folder.
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *               properties:
 *                 error:
 *                   type: string
 *       404:
 *         description: The specified folder does not exist.
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *               properties:
 *                 error:
 *                   type: string
 *       500:
 *         description: Error deleting the folder.
 *         content:
 *           application/json:
 *             schema:
 *               type: object
 *               properties:
 *                 error:
 *                   type: string
 */

function authenticateToken(req, res, next) {
    authMiddleware(req, res, function(err) {
        if (!err) {
            return 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) {
            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.json:', 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.delete('/:folderName', authenticateToken, (req, res) => {

  const userId = req.userData ? req.userData.name : null;
  if (!userId) {
      return res.status(401).json({ error: 'Unauthorized' });
  }
  const folderName = req.params.folderName;
  const userFolderPath = path.join('cdn-files', userId);
  const folderPath = path.join(userFolderPath, folderName);

  if (!fs.existsSync(folderPath)) {
      return res.status(404).json({ error: 'The specified folder does not exist.' });
  }

  if (!folderPath.startsWith(userFolderPath)) {
      return res.status(403).json({ error: 'You do not have permission to delete this folder.' });
  }

  fs.rmdir(folderPath, { recursive: true }, (err) => {
      if (err) {
          return res.status(500).json({ error: 'Error deleting the folder.' });
      }
      res.json({ deleted: true, success: 'Folder successfully deleted.' });
  });
});

module.exports = router;