/*
 * Copyright (c) 2008-2016 Computer Network Information Center (CNIC), Chinese Academy of Sciences.
 * 
 * This file is part of Duckling project.
 *
 * 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 cn.vlabs.duckling.umt.spi.thirdparty.auth;

import java.util.HashMap;
import java.util.Map;

public final class ThirdPartyAuthFactory {
	private boolean init = false;
	private static final ThirdPartyAuthFactory instance = new ThirdPartyAuthFactory();
	private static final Map<String,IThirdPartAuth> thirdPartyAuths = new HashMap<String,IThirdPartAuth>();
	private ThirdPartyAuthFactory() {
	}
	public synchronized void init(String configFile) {
		if (!init) {
			new ThirdPartAuthProviderNotifier(configFile).notifyProvider();
			init = true;
		}
	}
	public static ThirdPartyAuthFactory getInstance()
    {
    	return instance;
    }
	public static synchronized void register(String authBy, IThirdPartAuth thirdPartyAuth)
    {
		if(authBy!=null)
		{
			thirdPartyAuths.put(authBy, thirdPartyAuth);
		}
    }
	public IThirdPartAuth getAuthBy(String authBy)
	{
		return thirdPartyAuths.get(authBy);
	}
	
}