AngularJS - FacebookAuth

app.js

var app = angular.module('myApp', ['ngRoute', 'ngCookies']);

window.fbAsyncInit = function() {
    FB.init({
      appId      : 'the id of your application',
      xfbml      : true,
      version    : 'v2.5'
    });
  };

  (function(d, s, id){
     var js, fjs = d.getElementsByTagName(s)[0];
     if (d.getElementById(id)) {return;}
     js = d.createElement(s); js.id = id;
     js.src = "https://connect.facebook.net/en_US/sdk.js";
     fjs.parentNode.insertBefore(js, fjs);
   }(document, 'script', 'facebook-jssdk'));

AuthToken.js

app.factory('authToken',['$cookieStore', '$location', function($cookieStore, $location){
	var token = {};
    token.start = null;

	token.setAccessToken = function(accessToken) {
		$cookieStore.put('accessToken', accessToken);
	}

	token.getAccessToken = function() {
		token.authToken = $cookieStore.get('accessToken');
		return token.authToken;
	}
	token.getUserinfo = function() {
		token.userInfo = $cookieStore.get('facebookUser');

		if(token.userInfo)
		 return token.userInfo;	
	}

	token.logout = function(){
		$cookieStore.remove("accessToken");
		$cookieStore.remove('facebookUser');
		$location.path('/');
	}

	return token;
}]);

LoginController.js

app.controller('LoginController', ['$scope','$http', '$rootScope','$location', '$cookieStore', 'authToken', 
 function($scope, $http, $rootScope, $location, $cookieStore, authToken) {
  //send an req to server side
    $scope.checkFacebookUser = function(facebook){
        $http.post('/checkFacebookUser', facebook).success(function(response){
            $location.path('/dashboard');
        }).error(function(response){
                console.log('Application unavailable... Try later.');
        });
    }

	$scope.facebookLogin = function() {
     FB.login(function(response){
                if (response.authResponse) {
                    FB.api('/me', function(response) {
                        $cookieStore.put('facebookUser', response);    
                        var accessToken = FB.getAuthResponse().accessToken;
                        authToken.setAccessToken(accessToken);
                        $scope.checkFacebookUser(response);
                        $scope.$applyAsync();
                    });
                } else {
                    $location.path('/');
                }
            });
	};
}]);

Routes.js

app.config(['$routeProvider', '$locationProvider', 
function($routeProvider, $locationProvider) {
 $routeProvider
	.when("/", {
		templateUrl : '/views/login.html',
		controller : 'LoginController'
	})
	.when("/dashboard", {
		templateUrl : '/views/dashboard.html',
		controller : 'DashboardController',
		authenticated: true
	})
	.otherwise('/', {
		templateUrl : '/views/login.html',
		controller : 'LoginController'
	});

	$locationProvider.html5Mode({
	  enabled: true,
	  requireBase: false
	});
}]);





app.run(['$rootScope', '$location', 'authToken', 
	function($rootScope, $location, authToken){
	 $rootScope.$on('$routeChangeStart', function(event, next, cur) {
	 	/*Check if user are authenticated*/
	    var userAuth = authToken.getAccessToken();
	 	var facebookUser = authToken.getUserinfo();
		authToken.start = true;
	 	if(!userAuth) {	 		 
	 	   	$location.path('/');
		}else {
		 	$location.path('/dashboard');
		}
	

	 });
}]);