package com.whyc.webSocket;

import com.whyc.config.WebSocketConfig;
import com.whyc.service.BattalarmDataService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import javax.servlet.http.HttpSession;
import javax.websocket.*;
import javax.websocket.server.ServerEndpoint;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

@Component
@ServerEndpoint(value = "/battAlarmFoot", encoders = WebSocketEncoder.class, configurator = WebSocketConfig.class)
public class BattAlarmFootSocket {
    private volatile Thread thread;

    private static final int executeTime = 5000;

    private volatile boolean runFlag = true;

    private volatile Map<String, Thread> threadMap = new HashMap<>();

    private volatile Map<Long, Boolean> threadFlagMap = new HashMap<>();

    private static BattalarmDataService service;

    private Session session;

    private HttpSession httpSession;

    @Autowired
    public void setService(BattalarmDataService service) {
        BattAlarmFootSocket.service = service;
    }

    @OnOpen
    public void onOpen(Session session, EndpointConfig config) {
        this.session = session;
        this.httpSession = (HttpSession) config.getUserProperties().get("httpSession");
    }

    @OnMessage
    public synchronized void onMessage(Session session, String uId){
        String lang = (String) this.httpSession.getAttribute("lang");
        //String lang = "zh_CN";
        thread = new Thread("Thread_battAlarmFoot") {
            @Override
            public void run() {
                while (runFlag && !isInterrupted()) {
                    Thread thread = currentThread();
                    threadFlagMap.put(thread.getId(), true);
                    try {
                        if (session.isOpen()) {
                            //推送信息
                            synchronized (session) {
                                session.getBasicRemote().sendObject(service.getRealAlarm(Integer.parseInt(uId), lang));
                            }
                            threadFlagMap.put(thread.getId(),false);
                        }
                        sleep(executeTime);
                    } catch (IOException | InterruptedException | EncodeException e) {
                        interrupt();
                    }
                }
            }
        };
        thread.start();
        threadFlagMap.put(thread.getId(),true);
        //停止老的socket线程
        Thread threadBefore = threadMap.get(session.getId());
        if(threadBefore !=null && threadBefore.isAlive()){
            while (threadFlagMap.get(threadBefore.getId())){
            }
            threadBefore.interrupt();
        }
        //将线程存储,便于调用定位
        threadMap.put(session.getId(), this.thread);
    }

    @OnClose
    public void onClose(CloseReason closeReason){
        System.err.println("closeReason = " + closeReason);
        runFlag = false;
        if (thread != null && thread.isAlive()) {
            thread.interrupt();
        }
        threadMap.remove(session.getId());
    }

    @OnError
    public void onError(Throwable error) {
        error.printStackTrace();
        if (thread != null && thread.isAlive()) {
            thread.interrupt();
        }
        threadMap.remove(session.getId());
    }
}