angularjs service to handle login/logout/status

gistfile1.txt

define(function(require, exports, module) {

  var angular = require('angular');

  require('angular-cookies');

  var usersModule = module.exports = angular.module('users', ['ngCookies'])
  .factory('UserService', ['$http', '$cookieStore', function($http, $cookieStore) {
    var currentUser = $cookieStore.get('user') || null;

    $cookieStore.remove('user');

    function changeUser(user) {
      currentUser = user;
    }

    return {
      /*
      determines if current user is logged in, checking cookies
       */
      isLoggedIn: function(user) {
        if (user === undefined) {
          user = currentUser;
        }
        return user ? true : false;
      },

      login: function(user, success, error) {
        $http.post('/login', user).success(function(user){
          changeUser(user);
          success(user);
        }).error(error);
      },

      logout: function(success, error) {
        $http.post('/logout').success(function(){
          changeUser(null);
          success();
        }).error(error);
      }

    };
  }]);

});