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

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

'use strict';

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

module.exports = function(config) {

  function doRequest(body, options) {
    options = options || {};
    let finalRequestConfig = extend({}, config, this.defaultRequestOptions, {
      url: this.urlResolver(this, config.url, body),
      context: this.context,
      body: body
    }, options);
    let 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) {
    let 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(
        (p, t) => p.then(t),
        Promise.resolve({
          client: this,
          options: options,
          requestConfig: config
        })
      ).then(doThisRequest);
    }
  };

};