uploading files to aws s3 bucket using nodejs

imageUploader.js

const express = require('express');
const router = express.Router();

const upload = require('../services/uploder_service');

const singleUpload = upload.single('image');


router.post('/image-upload', function(req, res) {
  singleUpload(req, res, function(err) {
    if (err) {
      return res.status(401).send(
        {
          message: 'Image Upload Error',
          detail: err.message
        });
    }

    return res.status(200).send({
      imageUrl: `${req.file.location}`
    });
  });
});


module.exports = router;

uploder_service.js

const aws = require('aws-sdk');
const multer = require('multer');
const multerS3 = require('multer-s3');
const env = process.env.NODE_ENV || 'aws_credentials';
const config = require('../../config/config.json')[env];

aws.config.update({
  secretAccessKey: config.secretAccessKey,
  accessKeyId: config.accessKeyId,
  region: config.region
});

const s3 = new aws.S3();



const upload = multer({
  storage: multerS3({
    acl: 'public-read',
    s3,
      bucket: config.bucket,
    contentType: multerS3.AUTO_CONTENT_TYPE,
    metadata: function (req, file, cb) {
      cb(null, Object.assign({}, req.body));
    },
    key: function (req, file, cb) {
      cb(null, `${Date.now()}-${file.originalname}`)
    }
  })
});
module.exports = upload;