package com.ycl.jxkg.server;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.ycl.jxkg.domain.query.WebSocketQuery;
import com.ycl.jxkg.domain.vo.WebsocketDataVO;
import com.ycl.jxkg.enums.WebsocketCommendEnum;
import com.ycl.jxkg.service.EducationResourceService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.ApplicationContext;
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.Objects;
import java.util.concurrent.CopyOnWriteArraySet;

/**
 * @author：xp
 * @date：2024/6/26 15:51
 */
@Component
@Slf4j
@ServerEndpoint("/websocket/{userId}")
public class WebsocketServer {

    private static ApplicationContext applicationContext;

    public static void setApplicationContext(ApplicationContext context) {
        applicationContext = context;
    }

    /**
     * 线程安全的无序的集合
     */
    private static final CopyOnWriteArraySet<Session> SESSIONS = new CopyOnWriteArraySet<>();

    /**
     * 存储在线连接数
     */
    private static final Map<Integer, Session> SESSION_POOL = new HashMap<>();

    @OnOpen
    public void onOpen(Session session, @PathParam(value = "userId") Integer userId) {
        try {
            SESSIONS.add(session);
            SESSION_POOL.put(userId, session);
            log.info("【WebSocket消息】有新的连接，总数为：" + SESSIONS.size());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @OnClose
    public void onClose(Session session) {
        try {
            SESSIONS.remove(session);
            log.info("【WebSocket消息】连接断开，总数为：" + SESSIONS.size());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @OnMessage
    public void onMessage(String message) {
        WebSocketQuery webSocketQuery = JSONObject.parseObject(message, WebSocketQuery.class);
        String command = webSocketQuery.getCommand();
        Integer userId = webSocketQuery.getId();
        if(WebsocketCommendEnum.RECORD_STUDY_TIME.getCommand().equals(command)){
            log.info("存消息");
            EducationResourceService educationResourceService = applicationContext.getBean(EducationResourceService.class);
            educationResourceService.recordTime(userId);
        }
        // 会议操作
        if (WebsocketCommendEnum.MUTE.getCommand().equals(command) || WebsocketCommendEnum.OPEN_CAMERA.getCommand().equals(command) || WebsocketCommendEnum.KICK_OUT.getCommand().equals(command)) {
            WebsocketDataVO websocketDataVO = new WebsocketDataVO();
            websocketDataVO.setCommend(command);
            sendOneMessage(userId, JSON.toJSONString(websocketDataVO));
        }
        log.info("【WebSocket消息】收到客户端消息：" + message);
    }

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

    /**
     * 此为单点消息
     *
     * @param userId  用户编号
     * @param message 消息
     */
    public void sendOneMessage(Integer userId, String message) {
        Session session = SESSION_POOL.get(userId);
        if (session != null && session.isOpen()) {
            try {
                synchronized (session) {
                    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)
     *
     * @param userIds 用户编号列表
     * @param message 消息
     */
    public void sendMoreMessage(List<Integer> userIds, String message) {
        for (Integer userId : userIds) {
            Session session = SESSION_POOL.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();
                }
            }
        }
    }

    /**
     * 校验用户是否在线
     *
     * @param userId
     * @return
     */
    public Boolean checkUserOnline(Integer userId) {
        Session session = SESSION_POOL.get(userId);
        return Objects.nonNull(session);
    }

}