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 confermare l'autenticazione
   */
  @Interceptor
  @AuthenticationRequired
  @Priority(Interceptor.Priority.APPLICATION+1)
  public class AuthenticationRequiredInterceptor {
      @Inject private CurrentUser currentUser;
  
      /**
       * Verifica l'autenticazione
       * @param invocationContext
       * @return Oggetto che conferma la possibilità di procedere.
       * @throws AuthenticationRequiredException
       */
      @AroundInvoke
      public Object checkAdmin(InvocationContext invocationContext) throws Exception{
          if(!currentUser.isLoggedIn()){
              throw new AuthenticationRequiredException();
          }
          return invocationContext.proceed();
      }
  }