/**
 * Copyright 2012-2017 Red Hat, Inc.
 *
 * Thermostat is distributed under the GNU General Public License,
 * version 2 or any later version (with a special exception described
 * below, commonly known as the "Classpath Exception").
 *
 * A copy of GNU General Public License (GPL) is included in this
 * distribution, in the file COPYING.
 *
 * Linking Thermostat code with other modules is making a combined work
 * based on Thermostat.  Thus, the terms and conditions of the GPL
 * cover the whole combination.
 *
 * As a special exception, the copyright holders of Thermostat give you
 * permission to link this code with independent modules to produce an
 * executable, regardless of the license terms of these independent
 * modules, and to copy and distribute the resulting executable under
 * terms of your choice, provided that you also meet, for each linked
 * independent module, the terms and conditions of the license of that
 * module.  An independent module is a module which is not derived from
 * or based on Thermostat code.  If you modify Thermostat, you may
 * extend this exception to your version of the software, but you are
 * not obligated to do so.  If you do not wish to do so, delete this
 * exception statement from your version.
 */

import * as url from 'url';

export function cmdChanUrl (gatewayUrl = window.tmsGatewayUrl) {
  if (!gatewayUrl) {
    throw new Error('gatewayUrl could not be determined');
  }
  let parsed = url.parse(gatewayUrl);
  let protocol = parsed.protocol;
  if (protocol === 'http:') {
    parsed.protocol = 'ws:';
  } else if (protocol === 'https:') {
    parsed.protocol = 'wss:';
  } else {
    throw new Error('gatewayUrl protocol unknown');
  }
  return url.format(parsed);
};

let modName = 'configModule';
let mod = angular.module(modName, []);
export default modName;

/* istanbul ignore next */
export function init () {
  mod
    .constant('environment', process.env.NODE_ENV)
    .constant('debug', process.env.DEBUG)
    .value('gatewayUrl', window.tmsGatewayUrl)
    .factory('commandChannelUrl', cmdChanUrl);
}