package com.sckj.common.socketio;

import com.corundumstudio.socketio.SocketIOServer;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.ObjectUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;

/**
 * @Author: sckj
 * @Description: 客户端自动连接和断开、服务端关闭
 */
@Component
@Slf4j
public class SocketHandler {

    @Autowired
    private SocketIOServer socketIoServer;

    private static final String USERID = "userId";

    /**
     *  容器销毁前，自动调用此方法，关闭 socketIo 服务端
     *
     * @Param []
     * @return
     **/
    @PreDestroy
    private void destroy(){
        try {
            log.debug("关闭 socket 服务端");
            if(null != socketIoServer){
                socketIoServer.stop();
            }
        }catch (Exception e){
            e.printStackTrace();
        }
    }

    @PostConstruct
    public void init() {
        log.debug("SocketEventListener initialized");

        //添加监听，客户端自动连接到 socket 服务端
        socketIoServer.addConnectListener(client -> {
            String userId = client.getHandshakeData().getSingleUrlParam(USERID);
            log.info("客户端userId: {},已连接，客户端ID为：{}",userId,client.getSessionId());

            if(ObjectUtils.isNotEmpty(userId)){
                SocketUtil.connectMap.put(userId, client);
                SocketUtil.clientUserIds.put(client,userId);
            }
        });

        //添加监听，客户端跟 socket 服务端自动断开
        socketIoServer.addDisconnectListener(client -> {
            String userId = client.getHandshakeData().getSingleUrlParam(USERID);
            log.info("客户端userId: {},断开连接，客户端ID为：{}",userId,client.getSessionId());
            if(ObjectUtils.isNotEmpty(userId)){
                SocketUtil.connectMap.remove(userId, client);
                SocketUtil.clientUserIds.remove(client,userId);
            }
        });

    }


}