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/**
 * Copyright (c) 2014-2015, biezhi 王爵 ([email protected])
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * 	http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.unique.support;

import java.util.List;
import java.util.Map;

import org.unique.commons.utils.CollectionUtil;


/**
 * 增强管理器
 * @author biezhi
 * @since 1.0
 */
public final class SupportManager {
	
	private static final Map supportMap = CollectionUtil.newHashMap();
	
	/**
	 * 获取所有增强器
	 * @return 增强器map
	 */
	public static Map getSupportMap(){
		return supportMap;
	}
	
	/**
	 * 获取所有增强器
	 * @return 增强器列表
	 */
	public static List getSupportList(){
		return (List) supportMap.values();
	}
	
	/**
	 * 获取一个增强器
	 * @param key 增强器的名称（类完整名称）
	 * @return 增强器
	 */
	public static Support getSupport(final String key){
		return supportMap.get(key);
	}
	
	/**
	 * 添加一个增强器
	 * @param key 增强器全名称
	 * @param support 增强器实例
	 */
	public static void put(final String key, final Support support){
		supportMap.put(key, support);
	}
	
	/**
	 * 添加一个增强器
	 * @param key 增强器class
	 * @param support 增强器实例
	 */
	public static void put(final Class key, final Support support){
		supportMap.put(key.getName(), support);
	}
	
	/**
	 * 移除一个增强
	 * @param key 要移除的增强器的名称
	 */
	public static void remove(final String key){
		Support support = getSupport(key);
		if(null != support){
			support.shutdown();
			supportMap.remove(key);
		}
	}
	
	/**
	 * 移除一个增强
	 * @param key 要移除的增强器的class
	 */
	public static void remove(final Class key){
		Support support = getSupport(key.getName());
		if(null != support){
			support.shutdown();
			supportMap.remove(key.getName());
		}
	}
	
	/**
	 * 禁用增强器
	 * @param key
	 */
	public static void shutdown(final String key){
		Support support = getSupport(key);
		if(null != support){
			support.shutdown();
		}
	}
	
	/**
	 * 禁用增强器
	 * @param supportClass 增强器class对象
	 */
	public static void shutdown(final Class supportClass){
		Support support = getSupport(supportClass.getName());
		if(null != support){
			support.shutdown();
		}
	}
	
	/**
	 * 启动增强器
	 * @param key
	 */
	public static void start(final String key){
		Support support = getSupport(key);
		if(null != support){
			if(support.status == 0){
				support.startup();
			}
		}
	}
	
	/**
	 * 启动增强器
	 * @param supportClass 增强器class对象
	 */
	public static void start(final Class supportClass){
		Support support = getSupport(supportClass.getName());
		if(null != support){
			if(support.status == 0){
				support.startup();
			}
		}
	}
	
	/**
	 * 重新启用增强器
	 * @param key
	 */
	public static void restart(final String key){
		Support support = getSupport(key);
		if(null != support){
			if(support.status == 0){
				support.startup();
			}
			if(support.status == 1){
				support.shutdown();
				support.startup();
			}
		}
	}
	
	/**
	 * 重新启用增强器
	 * @param supportClass 增强器class对象
	 */
	public static void restart(final Class supportClass){
		Support support = getSupport(supportClass.getName());
		if(null != support){
			if(support.status == 0){
				support.startup();
			}
			if(support.status == 1){
				support.shutdown();
				support.startup();
			}
		}
	}
}