package com.casic.missiles.common;

import com.alibaba.fastjson.JSON;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;

import javax.websocket.OnClose;
import javax.websocket.OnMessage;
import javax.websocket.OnOpen;
import javax.websocket.Session;
import javax.websocket.server.PathParam;
import javax.websocket.server.ServerEndpoint;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CopyOnWriteArraySet;

/**
 * 此注解相当于设置访问URL
 */
@Component
@ServerEndpoint("/websocket/{userId}")
@Slf4j
public class WebSocket {
    private Session session;

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

    @OnOpen
    public void onOpen(Session session, @PathParam(value = "userId") String userId) {
        this.session = session;
        webSockets.add(this);
        sessionPool.put(userId, session);
        log.info(userId + "【websocket消息】有新的连接，总数为:" + webSockets.size());
    }

    @OnClose
    public void onClose() {
        webSockets.remove(this);
        log.info("【websocket消息】连接断开，总数为:" + webSockets.size());
    }

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

    // 此为广播消息
    public void sendAllMessage(String message) {
        for (WebSocket webSocket : webSockets) {
//            System.out.println("【websocket消息】广播消息:"+message);
            try {
                synchronized (webSocket.session) {
                    webSocket.session.getBasicRemote().sendText(message);
//                    webSocket.session.getAsyncRemote().sendText(message);
                }

            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }


    /**
     * 发送列表消息
     *
     * @param userIds 用户集合
     * @param message 消息体
     */
    public void sendListMessage(List<String> userIds, String message) {
        log.info("【websocket消息】列表消息:" + message);
        for (String userId : userIds) {
            Session session = sessionPool.get(userId);
            if (session != null) {
                try {
                    session.getAsyncRemote().sendText(message);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
    }


    /**
     * 单点消息
     *
     * @param userId  用户信息
     * @param message 消息体
     */
    public void sendOneMessage(String userId, String message) {
        log.info("【websocket消息】单点消息:" + message);
        Session session = sessionPool.get(userId);
        if (session != null) {
            try {
//                session.getAsyncRemote().sendObject(JSON.parseObject(message));
                session.getAsyncRemote().sendText(message);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * 单点消息
     *
     * @param userId 用户信息
     * @param obj    消息体
     */
    public void sendOneObjMessage(String userId, Object obj) {
        log.info("【websocket消息】单点消息:" + obj);
        Session session = sessionPool.get(userId);
        if (session != null) {
            try {
                session.getAsyncRemote().sendObject(obj);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

}