App

gistfile1.txt

'use strict';

// Declare app level module which depends on filters, and services

var alApp = angular.module('alApp',
	[
         ...
		, 'login'
         ...
	]
)
    .constant('loginRedirectPath', '/signin')
    ...
    .constant('DEFAULTPICTURE', 'anonym.png')

    .service('initApp',['$rootScope', 'loginService', 'FBURL', 'AWAY', 'IDLE', 'DEFAULTPICTURE',
        function($rootScope, loginService, FBURL, AWAY, IDLE, DEFAULTPICTURE) {

            var runInit = function() {
                $rootScope.FBURL = FBURL;
                $rootScope.IDLE  = IDLE;
                $rootScope.AWAY  = AWAY;
                $rootScope.DEFAULTPICTURE = DEFAULTPICTURE;

	        $rootScope.auth = loginService.init();
            };

            return {
                run: runInit
            }
        }
    ])

    .run(['initApp',
        function(initApp) {
            initApp.run();
    }])


AND THIS IS A INIT FUNCTION IN loginService from login module

            init: function() {
               return auth = $firebaseSimpleLogin(firebaseRef());
            },