package com.lxzn.websocket;

import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;

import javax.websocket.*;
import javax.websocket.server.ServerEndpoint;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.CopyOnWriteArraySet;

/**
 * @Description:
 * @Author: zhangherong
 * @Date: Created in 2021/6/22 10:21
 * @Version: 1.0
 * @Modified By:
 */
@Component
@Slf4j
@ServerEndpoint("/websocket/license") //此注解相当于设置访问URL
public class LicenseWebSocket {
    private Session session;

    private static CopyOnWriteArraySet<LicenseWebSocket> webSockets =new CopyOnWriteArraySet<>();
    private static Map<String,Session> sessionPool = new ConcurrentHashMap<String,Session>();

    @OnOpen
    public void onOpen(Session session) {
        try {
            this.session = session;
            webSockets.add(this);
            sessionPool.put(session.getId(), session);
            log.info("【LicenseWebSocket消息】有新的连接，总数为:"+webSockets.size());
        } catch (Exception e) {
        }
    }

    @OnClose
    public void onClose() {
        try {
            webSockets.remove(this);
            sessionPool.remove(this.session.getId());
            log.info("【LicenseWebSocket消息】连接断开，总数为:"+webSockets.size());
        } catch (Exception e) {
        }
    }

    @OnMessage
    public void onMessage(String message) {
        log.debug("【LicenseWebSocket消息】收到客户端消息:"+message);
    }

    @OnError
    public void onError(Session session, Throwable error) {
        log.error("【LicenseWebSocket消息】发生错误:"+error);
    }

    // 此为群发消息
    public void sendMessage(String message) {
        Set<String> set = sessionPool.keySet();
        log.info("【LicenseWebSocket消息】 群发消息:"+message);
        for(String id : set){
            Session session = sessionPool.get(id);
            if (session != null && session.isOpen()) {
                try {
                    session.getAsyncRemote().sendText(message);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
    }
}