LoginSuccessfulAction.java

import com.groupon.grox.Action;

public class LoginSuccessfulAction implements Action<LoginStateModel> {
  
  private User user
  
  public LoginSuccessfulAction(User user){
      this.user = user;  
  }

  @Override
  public State newState(LoginStateModel oldState) {
    return oldState.toBuilder()
                   .setLoginState(LOGIN_SUCCESS)
                   .setLoggedInUser(user)
                   .build());
  }
}