Report the size of a folder in cloudinary (below upload)

folder-size-cloudinary.js

// npm install cloudinary

const cloudinary = require('cloudinary');
const folder_in_upload = process.env.FOLDER

cloudinary.config({
  cloud_name: process.env.CLOUD_NAME,
  api_key: process.env.API_KEY,
  api_secret: process.env.API_SECRET
});

cloudinary.api.resources(result => {
  const bytes = getBytesOfAllPictures(result.resources)
  retrivePage(result.resources.next_cursor, bytes)
  .then(totaleBytes => console.log(`bytes is: ${totaleBytes}`))
})

page = 0

function retrivePage(next_cursor_id, aggBytes) {
  return new Promise((resolve, reject) => {
    cloudinary.api.resources(result => {
       currentBytes = getBytesOfAllPictures(result.resources) + aggBytes;
       const { next_cursor, rate_limit_remaining } = result;
       if(rate_limit_remaining > 0 && next_cursor) {
         console.log(`Still ${rate_limit_remaining} requests left`)
         console.log(`Cursor is ${next_cursor}`)
         console.log(`currentBytes is ${currentBytes}`);
         console.log(`KB is ${currentBytes / 1024 }`);
         console.log(`MB is ${currentBytes / 1024 / 1024 }`);
         console.log(`GB is ${currentBytes / 1024 / 1024 / 1024}`);
         console.log(`Processed images is ${++page * 500}`);
         resolve(retrivePage(next_cursor, currentBytes))
       } else {
         console.log('Existing')
         console.log('rate_limit_remaining:', rate_limit_remaining)
         console.log('next_cursor:', next_cursor)
         //if no cursor or rate_limit_remaining is 0, return bytes
         resolve(currentBytes)
       }
    }, {next_cursor: next_cursor_id, max_results: 500, type: 'upload', prefix: folder_in_upload})
  })
}

function getBytesOfAllPictures(pictures) {
  return pictures.reduce((size, picture) => {
    return size + picture.bytes
  }, 0)
}