package chat.server.call;

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

import chat.handler.ChannelHandler;
import chat.handler.ChatRoomHandler;
import chat.handler.ClientHandler;
import chat.handler.GroupHandler;
import chat.handler.FriendshipHandler;
import chat.handler.MessageHandler;
import chat.handler.RobotHandler;
import chat.handler.SensitiveHandler;
import chat.handler.SystemHandler;
import chat.handler.FriendCircleHandler;


public class CallObjectMap {
	
	private static Map<String, Class<? extends CallObject>> objectMap;
	
	static {
		init();
	}

	public static CallObject get(Operator operator) {
		try {
			String key = operator.getObject();
			key = key.toLowerCase();
			
			Class<? extends CallObject> clazz = objectMap.get(key);
			
			if (clazz == null) {
				return null;
			}
			
			CallObject object = clazz.newInstance();
			return object;
		}
		catch (Exception e) {
			return null;
		}
	}

	private static void init() {
		//1.
		objectMap = new HashMap<String, Class<? extends CallObject>>();
		
		addOneCallObject("client", ClientHandler.class);
		addOneCallObject("chatroom", ChatRoomHandler.class);
		addOneCallObject("sensitive", SensitiveHandler.class);
		addOneCallObject("friend", FriendshipHandler.class);	
		addOneCallObject("message", MessageHandler.class);
		addOneCallObject("group", GroupHandler.class);
		addOneCallObject("channel", ChannelHandler.class);
		addOneCallObject("robot", RobotHandler.class);	
		addOneCallObject("system", SystemHandler.class);
		addOneCallObject("friendcircle", FriendCircleHandler.class);
	}

	private static void addOneCallObject(String key, Class<? extends CallObject> clazz) {
		key = key.toLowerCase();
		objectMap.put(key, clazz);
	}

}