mozu-node-sdk/src/plugins/expand-uritemplate-from-context.js

Mozu JavaScript SDK for Node.js and Arc.js environments

'use strict';
const getUrlTemplate = require('../utils/get-url-template');
const extend = require('../utils/tiny-extend');

function ensureTrailingSlash(url) {
  return (url.charAt(url.length-1) === '/') ? url : (url + '/');
}

/**
 * Creates, evaluates based on context, and returns a string URL for a Mozu API request.
 * @param  {Object} context The context of a client. Should have a `baseUrl` property at minimum.
 * @param  {string} tpt     A string to be compiled into a UriTemplate. Should be a valid UriTemplate.
 * @param  {Object} body      An object consisting of the JSON body of the request, to be used to interpolate URL paramters.
 * @return {string}         A fully qualified URL.
 */
module.exports = function() {
  return function (client, tpt, body) {
    let context = client.context;
    let template = getUrlTemplate(tpt);
    let fullTptEvalCtx = extend(
      // aliases for pod URLs and IDs first
      {
        homePod: context.baseUrl,
        pciPod: context.basePciUrl,
        tenantId: context.tenant,
        siteId: context.site,
        catalogId: context.catalog,
        masterCatalogId: context['master-catalog']
      },
      // all context values override those base values if provided
      context,
      // any matching values in the body override last.
      body
    );

    // ensure all base URLs have trailing slashes.
    ['homePod','pciPod','tenantPod'].forEach(x => {
      if (fullTptEvalCtx[x])
        fullTptEvalCtx[x] = ensureTrailingSlash(fullTptEvalCtx[x]);
    });

    // don't pass the API version!
    if (!body || !Object.prototype.hasOwnProperty.call(body, "version"))
      delete fullTptEvalCtx.version;

    return template.render(fullTptEvalCtx);
  };
};