package com.skua.modules.websocket;

import com.alibaba.fastjson.JSONObject;
import com.skua.modules.system.enums.SysUserLoginStateEnums;
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;

@Component
@Slf4j
@ServerEndpoint("/websocket/{userId}")
//此注解相当于设置访问URL
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) {
        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) {
        //log.info("【websocket消息】收到客户端消息:"+message);
        JSONObject obj = new JSONObject();
        obj.put("cmd", "heartcheck");//业务类型
        obj.put("msgTxt", "心跳响应");//消息内容
        session.getAsyncRemote().sendText(obj.toJSONString());
    }

    // 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(多人)
    public void sendAllMessageByDepartIds(List<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();
                }
            }
        }

    }

    // 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();
                }
            }
        }

    }

    /**
     * 获取用户状态(在线？离线）
     * @param userId
     * @return
     */
    public SysUserLoginStateEnums getLoginState(String userId){
        return sessionPool.containsKey(userId) && sessionPool.get(userId).isOpen()? SysUserLoginStateEnums.ON_LINE : SysUserLoginStateEnums.OFF_LINE;
    }

}