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package net.dreamlu.event;

import net.dreamlu.event.core.ApplicationEvent;
import net.dreamlu.utils.ArrayListMultimap;

import java.util.Collection;
import java.util.concurrent.ExecutorService;


/**
 * 事件工具类
 * @author L.cm
 * email: [email protected]
 * site:http://www.dreamlu.net
 * date 2015年4月26日下午9:58:53
 */
public class EventKit {
	private static ArrayListMultimap map;
	private static ExecutorService pool;

	static void init(ArrayListMultimap map, ExecutorService pool) {
		EventKit.map = map;
		EventKit.pool = pool;
	}
	
	/**
	 * 发布事件
	 * @param event ApplicationEvent
	 * @since 1.4.0
	 */
	public static void post(final ApplicationEvent event) {
		post(EventType.DEFAULT_TAG, event);
	}
	
	/**
	 * 发布事件
	 * @param tag 标记
	 * @param event 事件
	 * @since 1.4.0
	 */
	public static void post(final String tag, final ApplicationEvent event) {
		Class eventClazz = event.getClass();
		EventType eventType = new EventType(tag, eventClazz);
		post(eventType, event);
	}
	
	/**
	 * 发布事件
	 * @param eventType 事件封装
	 */
	@SuppressWarnings("unchecked")
	private static void post(final EventType eventType, final ApplicationEvent event) {
		Collection listenerList = map.get(eventType);
		for (final ListenerHelper helper : listenerList) {
			if (null != pool && helper.enableAsync) {
				pool.execute(new Runnable() {

					@Override
					public void run() {
						helper.listener.onApplicationEvent(event);
					}
				});
			} else {
				helper.listener.onApplicationEvent(event);
			}
		}
	}
	
	/**
	 * 发布事件
	 * 执行发送消息
	 * @param event ApplicationEvent
	 */
	@Deprecated
	public static void postEvent(final ApplicationEvent event) {
		post(event);
	}

}