omniacare/lib/api.js

CHR OmniaCare API SDK for NodeJS

"use strict";

var _ = require('lodash'),
    http = require('http'),
    querystring = require('querystring'),
    parseXMLString = require('xml2js').parseString;

var configuration = require('../configure');

/**
* Set up configuration by merging user provided configurations with the
* default settings
* @param {Object} options Configuration parameters passed as an object
* @return {undefined}
*/
var configure = exports.configure = function configure(options) {
  if (options !== undefined && typeof options === 'object') {
    configuration.defaultOptions = _.merge({}, configuration.defaultOptions, options);
  }
};

/**
 * Makes an OmniaCare API Call
 * @param  {Object} options http configuration object
 * @param  {Object} data    post data object
 * @return {function}       Promise
 */
var executeHTTP = exports.executeHTTP = function(method, data) {
  var post_data = querystring.stringify({'sXML': data});
  var options = _.merge({}, configuration.defaultOptions, {
    path: configuration.defaultOptions.path + method,
    headers: {'Content-Length': Buffer.byteLength(post_data)}
  });

  return new Promise(function(resolve, reject) {
// var nock = require('nock');
// nock.recorder.rec();
    var request = http.request(options, function(res) {
      res.setEncoding('utf8');
      var data = '';
      res.on('data', function(chunk) {
        data += chunk;
      });
      res.on('end', function() {
        parseXMLString(data, function(err, result) {
          if (err) {
            return reject(err);
          }
          var xml = result.string._
            .replace(/[\n\r]/g, '\\n')
            .replace(/&/g,"&")
            .replace(/-/g,"-");
          parseXMLString(xml, function(err, result) {
            if (err) {
              return reject(err);
            }
            return resolve(result);
          });
        });
      });
      res.on('error', function(e) {
        return reject(e.message);
      });
    });
    request.write(post_data);
    request.end();

// var nockCalls = nock.recorder.play();
// console.log(nockCalls);
  });
};