Generating ImageBoss URLs with JavaScript

imageboss-url.js

function mountImageBossUrl(src, { source, operation, cover_mode, width, height, options }) {
  var serviceUrl = 'https://img.imageboss.me';
  var template = '/:source/:operation/:options/';

  if (operation === 'cover') {
    template = '/:source/:operation::cover_mode/:widthx:height/:options/';
  } else if (operation === 'width') {
    template = '/:source/:operation/:width/:options/';
  } else if (operation === 'height') {
    template = '/:source/:operation/:height/:options/';
  }

  var finalUrl = template
    .replace(':source', source || '')
    .replace(':operation', operation || 'cdn')
    .replace(':cover_mode', cover_mode || '')
    .replace(':width', width || '')
    .replace(':height', height || '')
    .replace(':options', options || '')
    .replace(/\/\//g, '/')

  return serviceUrl + finalUrl + src;
}

var image = '/img.jpg';

console.log(mountImageBossUrl(image, {source: 'my-images', operation: 'cdn'}));
console.log(mountImageBossUrl(image, {source: 'my-images', operation: 'cover', width: 500, height: 500 }));
console.log(mountImageBossUrl(image, {source: 'my-images', operation: 'cover', cover_mode: 'face', width: 500, height: 500 }));
console.log(mountImageBossUrl(image, {source: 'my-images', operation: 'cover', cover_mode: 'face', width: 500, height: 500, options: 'grayscale:true' }));
console.log(mountImageBossUrl(image, {source: 'my-images', operation: 'width', width: 500 }));
console.log(mountImageBossUrl(image, {source: 'my-images', operation: 'height', height: 500 }));