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/*
 *
 * TeleStax, Open Source Cloud Communications
 * Copyright 2011-2017, Telestax Inc and individual contributors
 * by the @authors tag.
 *
 * This program is free software: you can redistribute it and/or modify
 * under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation; either version 3 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see 
 *
 */

package org.jdiameter.server.impl.app.slh;

import org.jdiameter.api.InternalException;
import org.jdiameter.api.app.AppEvent;
import org.jdiameter.api.app.StateEvent;

/**
 * @author  Fernando Mendioroz 
 *
 */

public class Event implements StateEvent {
  enum Type {
    SEND_MESSAGE, TIMEOUT_EXPIRES, RECEIVE_RIR;
  }

  AppEvent request;
  AppEvent answer;
  Type type;

  Event(Type type, AppEvent request, AppEvent answer) {
    this.type = type;
    this.answer = answer;
    this.request = request;
  }

  @SuppressWarnings("unchecked")
  public  E encodeType(Class eClass) {
    return eClass == Type.class ? (E) type : null;
  }

  @SuppressWarnings("rawtypes")
  public Enum getType() {
    return type;
  }

  public AppEvent getRequest() {
    return request;
  }

  public AppEvent getAnswer() {
    return answer;
  }

  public int compareTo(Object o) {
    return 0;
  }

  public Object getData() {
    return request != null ? request : answer;
  }

  public void setData(Object data) {
    try {
      if (((AppEvent) data).getMessage().isRequest()) {
        request = (AppEvent) data;
      } else {
        answer = (AppEvent) data;
      }
    } catch (InternalException e) {
      throw new IllegalArgumentException(e);
    }
  }

}