Creates a file in Azure Blob Storage using multiplarty and azure-storage packages.

uploadFileToAzureBlobStorage.js

import express from 'express';
import multiparty from 'multiparty';
import mongoose from 'mongoose';
var router = express.Router();
router.post('/uploadCourseImage', uploadFileToBlob);

function uploadFileToBlob(req, res) {
 var accessKey = '';
 var storageAccount = 'afiliadosricos';
 var blobService = azure.createBlobService(storageAccount, accessKey);
 var container = 'cdn';
 let filename = '';
 var form = new multiparty.Form();
 form.on('part',  (part) => {
    if (part.filename) {
         
         var size = part.byteCount - part.byteOffset;
         //to get pseudo unique value in filename
         var name = mongoose.Types.ObjectId().toString()+ '.' + part.filename.split('.').pop();
         
         blobService.createBlockBlobFromStream(container, name, part, size,{},  (error, result) => {
             if (error) {
                 res.send(' Blob create: error ');
             }
             this.filename = result;
         });
     } else {
         form.handlePart(part);
     }
 });
 form.parse(req);
 res.status(200).json({success: true, filename});
};