Angular AUTH example

authentication.js

angular.module('app')
.factory('authentication', [
  'user',
  function(user){
    return {
      authentication: function(){
        return user.identify();
      }
    };
  }
]);

route.js

angular.module('app')
.config([
  '$stateProvider',
  function($stateProvider){
    $stateProvider
    .state('home', {
      url: '/',
      resolve: {
        isLoggedIn: {
          [
          'authentication',
          function(authentication){
            return authentication.authenticate();
          }
        ]
      }  
    }
  }
])

user.js

angular.module('app')