trying to get uploads saving in MongoDB - mongodb

Question

I currently have the following code, which saves the temp file to public/files I have tried to understand the MongoDB GridFS documentation but with no success.
I am wondering how do I get the files to save inside MongoDB GridFS instead of my public/file directory
I am aware I am missing the part where I need to send the uploaded file to mongodb - this is the part I don't know how to do.
In mongodb example they say to do something like:
fs.createReadStream('./myFile').pipe(
bucket.openUploadStream('myFile', {
chunkSizeBytes: 1048576,
metadata: { field: 'myField', value: 'myValue' },
})
);
however I am not using FS or do I need to upload the file to the temp and then do the fs
import formidable from 'formidable';
import { MongoClient, ObjectId } from 'mongodb';
var Grid = require('gridfs-stream');
export const config = {
api: {
bodyParser: false,
},
};
export default async (req, res) => {
const uri = process.env.MONGODB_URI;
let client;
let clientPromise;
const options = {};
client = new MongoClient(uri, options);
clientPromise = client.connect();
const clients = await clientPromise;
const database = clients.db('AdStitchr');
var gfs = Grid(database, client);
gfs.collection('uploads');
const form = new formidable.IncomingForm();
form.uploadDir = 'public/files';
form.keepExtensions = true;
form.parse(req, (err, fields, files) => {
var file = files.file;
console.log(JSON.stringify(file));
try {
const newFile = File.create({
name: `files\${file.newFilename}.mp3`,
});
res.status(200).json({ status: 'success' });
} catch (error) {
res.send(error);
}
});
};