package com.whyc.webSocket;

import com.github.pagehelper.PageInfo;
import com.whyc.config.WebSocketConfig;
import com.whyc.dto.Response;
import com.whyc.service.DevDfuStateService;
import com.whyc.util.ActionUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import javax.websocket.*;
import javax.websocket.server.ServerEndpoint;
import java.util.HashMap;
import java.util.Map;

/**
 * 设备信息推送
 */
@Component
@ServerEndpoint(value = "/devState",encoders = WebSocketEncoder.class,configurator = WebSocketConfig.class)
public class DevStateSocket {
    private Session session;

    private static final int executeTime = 2000;

    private Thread thread;

    private volatile boolean runFlag=true;

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

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

    private static DevDfuStateService service;

    @Autowired
    public void setService(DevDfuStateService service) {
        DevStateSocket.service = service;
    }
    @OnOpen
    public void onOpen(Session session){
        this.session=session;
    }

    @OnMessage
    public void onMessage(Session session, String message){
        this.session=session;
        PageInfo pageInfo = ActionUtil.getGson().fromJson(message, PageInfo.class);
        thread = new Thread("Thread_DevStateSocket") {
            @Override
            public void run() {
                while (runFlag && !isInterrupted()) {
                    Thread thread = currentThread();
                    threadFlagMap.put(thread.getId(), true);
                    try {
                        Response res = service.getPage(pageInfo.getPageNum(), pageInfo.getPageSize());
                        if (session.isOpen()) {
                            //推送信息
                            synchronized (session) {
                                session.getBasicRemote().sendObject(res);
                            }
                            threadFlagMap.put(thread.getId(), false);
                        }

                        sleep(executeTime);
                        //} catch (IOException | InterruptedException | EncodeException e) {
                    } catch (Exception 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());
    }
}