Upload file in folder in Firebase storage with node.js

Question

I'm new with uploading files, I want to upload images of different products into Firebase storage and another file that required in the app, one product can have many images, so I want to create a folder for every product, the name of the folder will be the id of the product.

In code: I use @google-cloud/storage library to upload the file into firebase storage, but I search in documentation, no way that I can be able to create a folder then upload it to folder.

here my code :

I create middleware of multer to pass it in an endpoint, with check type of file.

const express = require("express");
const Multer = require("multer");
const { Storage } = require("@google-cloud/storage")


const storage = new Storage({
    projectId: process.env.PROJECT_FIREBASE_ID,
    keyFilename: "hawat-service.json",
});
const bucket = storage.bucket(process.env.BUCKET_NAME);

const multer = Multer({
    storage: Multer.memoryStorage(),
    fileFilter: (req, file, cb) => {
        checkFileType(req, file, cb);
    }
})


const checkFileType = (req ,file, cb) => {
    if (file.fieldname == 'cover' || file.fieldname == 'images') {
        if (!file.originalname.match(/\.(jpg|JPG|jpeg|JPEG|png|PNG|gif|GIF)$/)) {
              req.error = new Error( "Only images are allowed")
            return  cb(null, false);
        }
    } else if (file.fieldname == 'card' || file.fieldname == 'licence') {
        if (!file.originalname.match(/\.(pdf|jpg|JPG|jpeg|JPEG|png|PNG|gif|GIF)$/)) {
           req.error = new Error("Only images and pdf are allowed")
            return  cb(null, false);

        }
    }
    return cb(null, true)
}


module.exports = (req, res, next) => {


    return multer.fields([{ name: 'cover', maxCount: 1 },
    { name: 'images', maxCount: 5 }, { name: 'card', maxCount: 1 },
    { name: 'licence', maxCount: 1 }
])
        (req, res, () => {
            if (req.error) return res.status(400).send( {message : req.error.message })
            next()
        })
       
}

the function to upload file is

const express = require("express");
const Multer = require("multer");
const { Storage } = require("@google-cloud/storage");


const storage = new Storage({
  projectId: process.env.PROJECT_FIREBASE_ID,
  keyFilename: "hawat-service.json",
});

const bucket = storage.bucket(process.env.BUCKET_NAME);

module.exports = {
  upload: async ( file) => {
    return new Promise((resolve, reject) => {
      let newFileName = `${file.originalname}_${Date.now()}`;
  
      let fileUpload = bucket.file(newFileName);

      const createStream = fileUpload.createWriteStream({
          metadata: {
              contentType: file.mimetype
          }
      });

      createStream.on('error', (error) => {
        console.log("error in uploading is" , error)
          reject('Something is wrong! Unable to upload at the moment.');
      });

      createStream.on('finish', () => {
          // The public URL can be used to directly access the file via HTTP.
          const url = `https://storage.googleapis.com/${bucket.name}/${fileUpload.name}`;
       
      //   storage.bucket(process.env.BUCKET_NAME).file(fileUpload.name).makePublic();
     

             resolve(url);
      });

      createStream.end(file.buffer);
  });
  

the endpoint is

  router.post('/add-product' , auth, multer , seller.onAddProduct)

the function onAddProduct is a function that can receive multiple files from the user.

So How can I create a folder for every product, then upload files in the folder?

also, How can I delete the folder after created it?

Answer 1

I am not using the same method you are using but you could use my solution as a case study

  await storage.bucket(bucketName).upload(filename, {
        destination:"{Foldername}/{Filename}",
})