Change multer destination folder based on the request - express

Question

I am using express Multer middleware to save images in my application, I am using the same middleware to save the users, posts, and products images, the problem is all the images saved to the same directory "./public/uploads/", and what I want is to save each request to a specific folder,
For example:
The posts images to "./public/uploads/posts"
The products images to "./public/uploads/products"
I couldn't find a way to pass a variable from the routes to the middleware to change the destination dynamically
Could you please assist with this?
thanks in advance.
Here is my code:
Multer middleware file (multer.js)
const multer = require("multer");
const fs = require("fs");
let configDIR = "`./public/uploads/";
let storage = multer.diskStorage({
destination: (req, file, cb) => {
console.log('req.query.name', req.query.name)
let DIR = configDIR;
if (!fs.existsSync(DIR)) {
fs.mkdirSync(DIR, { recursive: true });
}
cb(null, DIR);
},
filename: (req, file, cb) => {
const fileName = "overDress" + Date.now() + "" +
file.originalname.toLowerCase().split(' ').join('-');
cb(null, fileName)
},
});
const upload =
multer({
storage: storage,
limits: {
fileSize: 1024 * 1024 //up to 1 megabytes per file.
},
}).single("image");
module.exports = {
upload,
};
One of my routes, the post route:
const controller = require('../controllers/post.controller');
import { Router } from 'express';
const router = Router();
import {upload} from '../middleware/multer'
let ImageFolder = 'posts'
router
.post('/',
(req, res, next) => {
upload(req, res, (err) => {
if (err)
return res.send({status:false, message: 'Invalid Image', error: err })
console.log('File Saved with no errors')
next()
}
)
export default router;