package org.jeecg.modules.message.websocket;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.CopyOnWriteArraySet;

import javax.annotation.Resource;
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 org.jeecg.common.base.BaseMap;
import org.jeecg.common.constant.WebsocketConst;
import org.jeecg.common.modules.redis.client.JeecgRedisClient;
import org.springframework.stereotype.Component;

import com.alibaba.fastjson.JSONObject;

import lombok.extern.slf4j.Slf4j;

/**
 * @Author scott
 * @Date 2019/11/29 9:41
 * @Description: 此注解相当于设置访问URL
 */
@Component
@Slf4j
@ServerEndpoint("/websocket/{userId}") //此注解相当于设置访问URL
public class WebSocket {
    /**
     * Redis触发监听名字
     */
    public static final String REDIS_TOPIC_NAME = "socketHandler";
    private Session session;

    private static CopyOnWriteArraySet<WebSocket> webSockets =new CopyOnWriteArraySet<>();
    private static Map<String,Session> sessionPool = new HashMap<String,Session>();
    @Resource
    private JeecgRedisClient jeecgRedisClient;
    @OnOpen
    public void onOpen(Session session, @PathParam(value="userId")String userId) {
        try {
            this.session = session;
            webSockets.add(this);
            sessionPool.put(userId, session);
            log.info("【websocket消息】有新的连接，总数为:"+webSockets.size());
        } catch (Exception e) {
        }
    }

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

    @OnMessage
    public void onMessage(String message) {
        //todo 现在有个定时任务刷，应该去掉
        log.debug("【websocket消息】收到客户端消息:"+message);
        JSONObject obj = new JSONObject();
        obj.put(WebsocketConst.MSG_CMD, WebsocketConst.CMD_CHECK);//业务类型
        obj.put(WebsocketConst.MSG_TXT, "心跳响应");//消息内容
        session.getAsyncRemote().sendText(obj.toJSONString());
    }

    /**
     * ws推送消息
     *
     * @param userId
     * @param message
     */
    public void pushMessage(String userId, String message) {
        for (Map.Entry<String, Session> item : sessionPool.entrySet()) {
            //userId key值= {用户id + "_"+ 登录token的md5串}
            //TODO vue2未改key新规则，暂时不影响逻辑
            if (item.getKey().contains(userId)) {
                Session session = item.getValue();
                try {
                    //update-begin-author:taoyan date:20211012 for: websocket报错 https://gitee.com/jeecg/jeecg-boot/issues/I4C0MU
                    synchronized (session){
                        log.info("【系统 WebSocket】推送单人消息:" + message);
                        session.getBasicRemote().sendText(message);
                    }
                    //update-end-author:taoyan date:20211012 for: websocket报错 https://gitee.com/jeecg/jeecg-boot/issues/I4C0MU
                } catch (Exception e) {
                    log.error(e.getMessage(),e);
                }
            }
        }
    }

    // 此为广播消息
    public void sendAllMessage(String message) {
//    	log.info("【websocket消息】广播消息:"+message);
        for(WebSocket webSocket : webSockets) {
            try {
                if(webSocket.session.isOpen()) {
                    webSocket.session.getAsyncRemote().sendText(message);
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

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

    // 此为单点消息(多人)
    public void sendMoreMessage(String[] userIds, String message) {
        for(String userId:userIds) {
            Session session = sessionPool.get(userId);
            if (session != null&&session.isOpen()) {
                try {
                    log.info("【websocket消息】 单点消息:"+message);
                    session.getAsyncRemote().sendText(message);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }

    }
    //==========【采用redis发布订阅模式——推送消息】========================================================================================
    /**
     * 后台发送消息到redis
     *
     * @param message
     */
    public void sendMessage(String message) {
        //log.info("【系统 WebSocket】广播消息:" + message);
        BaseMap baseMap = new BaseMap();
        baseMap.put("userId", "");
        baseMap.put("message", message);
        jeecgRedisClient.sendMessage(REDIS_TOPIC_NAME, baseMap);
    }
    /**
     * 此为单点消息 redis
     *
     * @param userId
     * @param message
     */
    public void sendMessage(String userId, String message) {
        BaseMap baseMap = new BaseMap();
        baseMap.put("userId", userId);
        baseMap.put("message", message);
        jeecgRedisClient.sendMessage(REDIS_TOPIC_NAME, baseMap);
    }
    /**
     * 此为单点消息(多人) redis
     *
     * @param userIds
     * @param message
     */
    public void sendMessage(String[] userIds, String message) {
        for (String userId : userIds) {
            sendMessage(userId, message);
        }
    }
}