import { helper } from '@ember/component/helper';

export default helper(function(fileSizeInBytes/*, options*/) {
  if (fileSizeInBytes < 1024) {
    return `${fileSizeInBytes} bytes`;
  }

  var i = -1;
  var byteUnits = ['KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];
  do {
      fileSizeInBytes = fileSizeInBytes / 1024;
      i++;
  } while (fileSizeInBytes > 1024);

  return String(Math.max(fileSizeInBytes, 0.1).toFixed(1) + ' ' +byteUnits[i]);
});