Hello, a little help for a newbie with a Umbraco plugin development. I hope some one out there can help me,

I'm developing plugin frontend with angularjs. My application logic depends on backend user. If user loged in I must show one form, if user loged out I must show other form.

I can get current user this way:

Asp.Net MVC controller action:

[HttpGet]
public IHttpActionResult GetCurrentUser()
{
    var userTicket = new HttpContextWrapper(HttpContext.Current).GetUmbracoAuthTicket();
    if (userTicket != null)
    {
        IUser currentUser = ApplicationContext.Services.UserService.GetByUsername(userTicket.Name);
        return Ok(new UserViewModel(currentUser));
    }

    return Ok();
}

In angular service can take user:

function getCurrentUser() {
    var url = '/umbraco/api/UserApi/GetCurrentUser';
    return $http.get(url).then(handleSuccess, handleError('Error getting current user'));
}

Ok, I can get information about user, but I can't get an event when this user log out. I doesn't want to use polling in this case. Maybe there is a better soliution?