Handle destination per route in nodejs with multer package - node.js

Question

I use multer package and make it dynamic and its work. Now it try to make it dynamic per route and stuck with this.
This is my fileupload service:
const path = require("path");
const multer = require("multer");
const crypto = require("crypto");
const fs = require("fs-extra");
const today = new Date();
const date = today.getFullYear() + "-" + (today.getMonth() + 1) + "-" + today.getDate();
const storage = multer.diskStorage({
destination: (req, file, callback) => {
const { companyID, flowID } = req.body;
let path = `./uploads/${companyID}/${flowID}`;
fs.mkdirsSync(path);
callback(null, path);
},
filename: (req, file, cb) => {
crypto.pseudoRandomBytes(8, (err, raw) => {
if (err) return cb(err);
cb(
null,
date + "_" + raw.toString("hex") + "_" + path.extname(file.originalname)
);
});
}
});
//Must be under storage
const upload = multer({ storage: storage }).single("upload");
const deleteFileFromServer = (companyID, flowID, filePath) => {
return new Promise((resolve,reject)=>{
fs.unlink(`./uploads/${companyID}/${flowID}/${filePath}`).then(()=>{
resolve("File Deleted");
}).catch((err)=> {
reject(err);
})
})
};
module.exports = {
upload: upload,
deleteFileFromServer: deleteFileFromServer
};
my route: Here i want handle destination in every route set diffrent destination
router.post("/uploadfile", upload, (req, res, next) => {
const file = req.file;
const flowID = req.body.flowID;
if (!file) {
const error = new Error("Please upload a file");
error.httpStatusCode = 400;
return next(error);
} else {
createFileInDB(file.originalname, flowID, file.filename)
.then(() => {
console.log("File Created");
res.json(file);
})
.catch(err => {
res.status(500).send(err);
});
}
});
What i want it to be? i want that every route i can choose different destination.
router.post("/uploadfile", upload, (req, res, next) => {
upload.destination = "my path/"
});
Thanks!!