(function() {
  'use strict';

  angular
    .module('dialoga')
    .factory('GUID', GUID);

  /** @ngInject */
  function GUID(){
    var service = {};

    service.generate = function (){
      function s4() {
        return Math.floor((1 + Math.random()) * 0x10000)
          .toString(16)
          .substring(1);
      }
      return s4() + s4() + '-' + s4() + '-' + s4() + '-' +
        s4() + '-' + s4() + s4() + s4();
    };

    return service;
  }
})();