how to get AuthService called before ?

gistfile1.txt

App.factory('AuthService', function($http) {
    return $http({
            method: 'POST',
            url: AUTHEN_BASE_URL, 
            data: AUTHEN_PARAMS,
            headers: {'Content-Type': 'application/x-www-form-urlencoded'}
        })
        .then(
            function success(response) {
                $http.defaults.headers.common['X-EZ-USER'] = 'jcpraud@ezakus.com';
                $http.defaults.headers.common['X-EZ-TOKEN'] = response.data.body;
                auth = true;
                console.log('token success get ' + response.data.body);
            },  
            function error(reason) {
                console.error('error while loading token');
            }
        );
})

App.factory('Profile', function($http, AuthService) {
    $http.get(BASE_URL + bid);
});