package com.casic.missiles.util;

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}")
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);
        System.out.println(userId + "【websocket消息】有新的连接，总数为:" + webSockets.size());
    }

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

    @OnMessage
    public void onMessage(String message) {
        System.out.println("【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 {
                webSocket.session.getAsyncRemote().sendText(message);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

    // 发送列表消息
    public void sendListMessage(List<String> userIds, String message) {
        System.out.println("【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();
                }
            }
        }
    }

    // 发送列表消息

//    public void sendListMessage(List<String> userIds, Object data){
//        System.out.println("【websocket消息】列表消息:"+data);
//        for (String userId : userIds) {
//            Session session = sessionPool.get(userId);
//            if (session != null) {
//                try {
////                    session.getAsyncRemote().sendText(message);
//                    session.getAsyncRemote().sendObject(data);
//                } catch (Exception e) {
//                    e.printStackTrace();
//                }
//            }
//        }
//    }

    // 此为单点消息
    public void sendOneMessage(String userId, String message) {
        System.out.println("【websocket消息】单点消息:" + message);
        Session session = sessionPool.get(userId);
        if (session != null) {
            try {
                session.getAsyncRemote().sendText(message);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

}