/*
 *      Copyright (c) 2018-2028, DreamLu All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are met:
 *
 *  Redistributions of source code must retain the above copyright notice,
 *  this list of conditions and the following disclaimer.
 *  Redistributions in binary form must reproduce the above copyright
 *  notice, this list of conditions and the following disclaimer in the
 *  documentation and/or other materials provided with the distribution.
 *  Neither the name of the dreamlu.net developer nor the names of its
 *  contributors may be used to endorse or promote products derived from
 *  this software without specific prior written permission.
 *  Author: DreamLu 卢春梦 (596392912@qq.com)
 */
package org.springblade.core.tool.utils;

import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.ApplicationEvent;
import org.springframework.lang.Nullable;

/**
 * spring 工具类
 *
 * @author Chill
 */
@Slf4j
public class SpringUtil implements ApplicationContextAware {

	private static ApplicationContext context;

	@Override
	public void setApplicationContext(@Nullable ApplicationContext context) throws BeansException {
		SpringUtil.context = context;
	}

	/**
	 * 获取bean
	 *
	 * @param clazz class类
	 * @param <T>   泛型
	 * @return T
	 */
	public static <T> T getBean(Class<T> clazz) {
		if (clazz == null) {
			return null;
		}
		return context.getBean(clazz);
	}

	/**
	 * 获取bean
	 *
	 * @param beanId beanId
	 * @param <T>    泛型
	 * @return T
	 */
	public static <T> T getBean(String beanId) {
		if (beanId == null) {
			return null;
		}
		return (T) context.getBean(beanId);
	}

	/**
	 * 获取bean
	 *
	 * @param beanName bean名称
	 * @param clazz    class类
	 * @param <T>      泛型
	 * @return T
	 */
	public static <T> T getBean(String beanName, Class<T> clazz) {
		if (null == beanName || "".equals(beanName.trim())) {
			return null;
		}
		if (clazz == null) {
			return null;
		}
		return (T) context.getBean(beanName, clazz);
	}

	/**
	 * 获取 ApplicationContext
	 *
	 * @return ApplicationContext
	 */
	public static ApplicationContext getContext() {
		if (context == null) {
			return null;
		}
		return context;
	}

	/**
	 * 发布事件
	 *
	 * @param event 事件
	 */
	public static void publishEvent(ApplicationEvent event) {
		if (context == null) {
			return;
		}
		try {
			context.publishEvent(event);
		} catch (Exception ex) {
			log.error(ex.getMessage());
		}
	}

}