amazone/server/middlewares/upload-photo.js

const aws = require('aws-sdk')
const multer = require('multer')
const multerS3 = require('multer-s3')

aws.config.update({
  secretAccessKey: process.env.AWSSecretKey,
  accessKeyId: process.env.AWSAccessKeyId
})

const s3 = new aws.S3()
const upload = multer({
  storage: multerS3({
    s3: s3,
    bucket: 'ddowa-amazon-clone-v1',
    acl: 'public-read',
    metadata: (req, file, cb) => {
      cb(null, { fieldname: file.fieldname })
    },
    key: (req, file, cb) => {
      cb(null, Date.now().toString())
    }
  })
})

module.exports = upload