Using facebook with AngularJS

facebook.js

services.factory('Facebook', function ($rootScope) {
    return {
        getLoginStatus:function () {
            FB.getLoginStatus(function (response) {
                $rootScope.$broadcast("fb_statusChange", {
                    'status': response.status
                });
            }, true);
        },
        login:function () {
            FB.getLoginStatus(function (response) {
                switch (response.status) {
                    case 'connected':
                        $rootScope.$broadcast('fb_connected', {
                            facebook_id: response.authResponse.userID
                        });
                        break;
                    case 'not_authorized' || 'unknown':
                        // 'not_authorized' || 'unknown': doesn't seem to work
                        FB.login(function (response) {
                            if (response.authResponse) {
                                $rootScope.$broadcast('fb_connected', {
                                    facebook_id: response.authResponse.userID,
                                    userNotAuthorized: true
                                });
                            } else {
                                $rootScope.$broadcast('fb_login_failed');
                            }
                        }, {
                            scope:'email'
                        });
                        break;
                    default:
                        FB.login(function (response) {
                            if (response.authResponse) {
                                $rootScope.$broadcast('fb_connected', {facebook_id:response.authResponse.userID
                                });
                                $rootScope.$broadcast('fb_get_login_status');
                            } else {
                                $rootScope.$broadcast('fb_login_failed');
                            }
                        });
                        break;
                }
            }, true);
        },
        logout:function () {
            FB.logout(function (response) {
                if (response) {
                    $rootScope.$broadcast('fb_logout_succeded');
                } else {
                    $rootScope.$broadcast('fb_logout_failed');
                }
            });
        },
        unsubscribe:function () {
            FB.api("/me/permissions", "DELETE", function (response) {
                $rootScope.$broadcast('fb_get_login_status');
            });
        }
    };
});

facebook.php

<?php

class Api_V1_Facebook_Controller extends Base_Controller
{
  public function post_auth()
	{
		try {
			$s = extend(array(
				'facebook_id' => 0,
				'first_name' => '',
				'last_name' => '',
				'email' => '',
				'picture' => '',
				'serie_id' => 0,
			), sr());

			if ($s['facebook_id'] == 0)
				throw new Exception("No Facebook data found.");

			$user = User::where_facebook_id($s['facebook_id'])
				->first();

			if (! $user) {
				$user = User::create(array(
					'name' => "{$s['first_name']} {$s['last_name']}",
					'type' => 'account',
					'facebook_id' => $s['facebook_id'],
					'facebook_image' => $s['picture'],
					'perm_contacts' => 0,
				));

				$user->account_user_id = $user->id;
				$user->save();
			}

			Auth::login($user->id, 1);

			$email_check = User::where_email($s['email'])
				->where_deleted(0)
				->first();

			if (! $email_check)
				$user->email = $s['email'];

			if (empty($user->name))
				$user->name = "{$s['first_name']} {$s['last_name']}";

			$user->facebook_id = $s['facebook_id'];
			$user->save();

			Cookie::forever('facebook', serialize($s));

			$serie = Serie::find($s['serie_id']);
			if (! $serie)
				throw new Exception("Could not find product.");

			if (! $serie->is_member($user->id) && ! $serie->is_expert($user->id)) {
				DB::table('serie_user')
					->insert(array(
						'user_id' => $user->id,
						'account_user_id' => $user->account_user_id,
						'serie_id' => $serie->id,
						'type' => 'member',
					));
			}

			$data = array(
				'facebook' => $s,
			);

			return json($data);
		} catch(Exception $e) {
			return Report::log($e->getMessage());
		}
	}

	public function get_session()
	{
		try {
			$facebook = Cookie::get('facebook');

			return json(unserialize($facebook));
		} catch(Exception $e) {
			return Report::log($e->getMessage());
		}
	}

	public function get_logout()
	{
		try {
			session_destroy();
			unset($_COOKIE);
		} catch(Exception $e) {
			return Report::log($e->getMessage());
		}
	}
}

MainCtrl.js

controllers.controller('MainCtrl', function($scope, $location, Facebook, $rootScope, $http, $location, Upload, Auth, User, Question, Category, Serie, Record, Location, Popup, Process, Card, Question) {
  $scope.main = {
		facebookAppId: '',
		user: {},
		serie: {},
		cloudUrl: $('[data-cloud-url]').data('cloud-url'),
		serieId: $('[data-serie-id]').data('serie-id'),
		active: {
			categoryId: 0,
			category: {},
			page: 'locations',
			locationgroupId: 0,
			location: {},
			newAnswer: {},
			newEvent: {},
			newLocation: {},
			newQuestion: {},
			newRsvp: {},
		},
		invite: {},
		values: {},
	};

/**
	 * Facebook
	 * https://github.com/Terumi/AngularJS-Facebook-Login
	 */
	$scope.info = {};

	$rootScope.$on("fb_statusChange", function (event, args) {
		$rootScope.fb_status = args.status;
		$rootScope.$apply();
	});
	$rootScope.$on("fb_get_login_status", function () {
		Facebook.getLoginStatus();
	});
	$rootScope.$on("fb_login_failed", function () {
		console.log("fb_login_failed");
	});
	$rootScope.$on("fb_logout_succeded", function () {
		console.log("fb_logout_succeded");
		$rootScope.id = "";
	});
	$rootScope.$on("fb_logout_failed", function () {
		console.log("fb_logout_failed!");
	});

	$rootScope.$on("fb_connected", function (event, args) {
		var params = {};

		function authenticateViaFacebook(parameters) {
			//posts some user data to a page that will check them against some db
			$http.post('/api/v1/facebook/auth', parameters).success(function () {
				$scope.updateSession();
				$scope.loadAuth();
			});
		}

		if (args.userNotAuthorized === true) {
			//if the user has not authorized the app, we must write his credentials in our database
			console.log("user is connected to facebook but has not authorized our app");
			FB.api({
				method:'fql.multiquery',
				queries:{
					'q1':'SELECT uid, first_name, last_name, email FROM user WHERE uid = ' + args.facebook_id,
					'q2':'SELECT url FROM profile_pic WHERE width=800 AND height=800 AND id = ' + args.facebook_id
				}
			}, function (data) {
				//let's built the data to send to php in order to create our new user
				l(data);
				params = {
					serie_id: $scope.main.serieId,
					facebook_id: data[0]['fql_result_set'][0].uid,
					first_name: data[0]['fql_result_set'][0].first_name,
					last_name: data[0]['fql_result_set'][0].last_name,
					email: data[0]['fql_result_set'][0].email,
					picture: data[1]['fql_result_set'][0].url
				}
				authenticateViaFacebook(params);
			});
		} else {
			console.log("user is connected to facebook and has authorized our app");
			//the parameter needed in that case is just the users facebook id
			params = {'facebook_id':args.facebook_id};
			authenticateViaFacebook(params);
		}

	});


	$rootScope.updateSession = function () {
		//reads the session variables if exist from php
		$http.get('/api/v1/facebook/session').success(function (data) {
			//and transfers them to angular
			$rootScope.session = data;
		});
	};

	$rootScope.updateSession();

	$scope.loginFacebook = function () {
		Facebook.login();
	};

	$scope.loadAuth();
	$scope.loadSerie();
});