eirenerx-sdk/lib/eprescribe.js

EireneRx JavaScript SDK

// eprescribe api
//
// Required Options
//
// * key - vendor key for authorization
// * secret - vendor secret for authorization
// * sponsor - eirenerx sponsor id (ie customer number)
// * center - eirenerx center id (ie office/location number)?
// * identifier - EHR Unique Patient Identifier
// * email - user email
// if identifier is set, then this module will find
// the patient and return a patient object
// if the indentifier is not set, then this module will
// create an empty instance of a patient object that
// can be filled and pushed to EireneRx
// * api url
// eirenerx api url, https://io.eirenerx.com https://io-staging.eirenerx.com
// passes err, url in callback
var request = require('request');
var PATIENTS = 'api/vendor/v1/patients';
var USERS = 'api/vendor/v1/users';

module.exports = function(opts) {
  var params = {
    auth: {
      user: opts.key,
      pass: opts.secret
    },
    headers: {
      'X-Sponsor-Id': opts.sponsor,
      'X-Center-Id': opts.center
    },
    json: true,
  };
  var tokenUrl = [opts.api, USERS, opts.email, 'authentication_token'].join('/');
  var patientUrl = [opts.api, PATIENTS, opts.identifier].join('/');
  var urls = [tokenUrl, patientUrl];
  //get token by e-mail
  //get eRx id by identifier
  var getUrl = function(callback) {
    var token = null;
    var patientId = null;
    var errors = [];

    var done = function(e, r, b) {
      if(e) { errors.push(e); }
      // if two errors or one error and one success, then return callback
      if (errors.length === 2 || (errors.length === 1 && (token || patientId))) {
        return callback(errors);
      }
      if (b.authentication_token) { token = b.authentication_token; }
      if (b.demographics) { patientId = b.demographics.id; }
      // got both token and patientId build url
      if (token && patientId) {
        var url = [opts.baseUrl, patientId, 'new_rx_requests', 'new?auth_token=' + token].join('/');
        callback(null, url);
      }
    };
  
    urls.forEach(function(url) {
      request.get(url, params, done);
    });
  };
  return Object.freeze({
    getUrl: getUrl
  });
};