mozu-node-sdk/utils/make-method.js

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

'use strict';

var extend = require('./tiny-extend');
var request = require('./request');

module.exports = function (config) {

  function doRequest(body, options) {
    options = options || {};
    var finalRequestConfig = extend({}, config, this.defaultRequestOptions, {
      url: this.urlResolver(this, config.url, body),
      context: this.context,
      body: body
    }, options);
    var finalMethod = finalRequestConfig.method && finalRequestConfig.method.toUpperCase();

    // this is magic and was never a good idea.
    // the way the SDK was designed, the first argument to a method will get
    // used both as the request payload and as an object to expand the URI
    // template. this resulted in collisions, and in unexpected behavior with
    // services that didn't expect strongly typed payloads. the below code
    // tried to fix it magically, but under certain circumstances it would be
    // very hard to debug.
    //
    // remove any properties from the body that were used to expand the url
    // if (body && 
    //     typeof body === "object" &&
    //     !Array.isArray(body) &&
    //     !options.body && 
    //     !options.includeUrlVariablesInPostBody && 
    //     (finalMethod === "POST" || finalMethod === "PUT")) {
    //   finalRequestConfig.body = Object.keys(body).reduce(function(m, k) {
    //     if (!urlSpec.keysUsed[k]) {
    //       m[k] = body[k];
    //     }
    //     return m;
    //   }, {});
    //   if (Object.keys(finalRequestConfig.body).length === 0) {
    //     delete finalRequestConfig.body;
    //   }
    // }


    if (finalMethod === "GET" || finalMethod === "DELETE" && !options.body) {
      delete finalRequestConfig.body;
      // it's outlived its usefulness, we've already made a url with it
    }
    return request(finalRequestConfig, this.requestTransform);
  }

  return function (body, options) {
    var doThisRequest = doRequest.bind(this, body, options);
    if (process.env.mozuHosted) {
      return doThisRequest();
    } else if (!this.prerequisiteTasks || !Array.isArray(this.prerequisiteTasks)) {
      return Promise.reject(new Error('Could not place request. No `prerequisiteTasks` array found on ' + 'the client object. To require no auth or URL prerequisites, set ' + '`this.prerequisiteTasks = [];` on the client object.'));
    } else {
      return this.prerequisiteTasks.reduce(function (p, t) {
        return p.then(t);
      }, Promise.resolve({
        client: this,
        options: options,
        requestConfig: config
      })).then(doThisRequest);
    }
  };
};