package usecase.auth;
   
   import javax.annotation.Priority;
   import javax.inject.Inject;
   import javax.interceptor.AroundInvoke;
   import javax.interceptor.Interceptor;
   import javax.interceptor.InvocationContext;
   
   /**
   * Classe interceptor per negare un'operazione ad un utente bannato.
   */
  @Interceptor
  @DenyBannedUsers
  @Priority(Interceptor.Priority.APPLICATION+2)
  public class DenyBannedUsersInterceptor {
      @Inject private CurrentUser currentUser;
  
      @AroundInvoke
      public Object checkAdmin(InvocationContext invocationContext) throws Exception{
          if(currentUser.isLoggedIn() && currentUser.getBanDuration() != null){
              throw new BannedUserException(currentUser.getBanDuration());
          }
          return invocationContext.proceed();
      }
  }