package com.ruoyi.system.websocket;

import com.ruoyi.common.core.utils.JwtUtils;
import java.util.concurrent.Semaphore;
import javax.websocket.OnClose;
import javax.websocket.OnError;
import javax.websocket.OnMessage;
import javax.websocket.OnOpen;
import javax.websocket.Session;
import javax.websocket.server.PathParam;
import javax.websocket.server.ServerEndpoint;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;

/**
 * websocket 消息处理
 *
 * @作者 ruoyi
 */
@Component
@ServerEndpoint("/websocket/message/{clientType}/{accessToken}")
public class WebSocketServer {

    private static final Logger LOGGER = LoggerFactory.getLogger(WebSocketServer.class);
    public static int socketMaxOnlineCount = 1000;
    private static Semaphore socketSemaphore = new Semaphore(socketMaxOnlineCount);

    @OnOpen
    public void onOpen(Session session, @PathParam("clientType") Integer clientType,
            @PathParam("accessToken") String accessToken)
            throws Exception {
        boolean semaphoreFlag = false;
        semaphoreFlag = SemaphoreUtils.tryAcquire(socketSemaphore);
        if (!semaphoreFlag) {
            LOGGER.error("\n 当前在线人数超过限制数- {}", socketMaxOnlineCount);
            WebSocketUsers.sendMessageToUserByText(session,
                    "当前在线人数超过限制数：" + socketMaxOnlineCount);
            session.close();
        } else {
            String userId = JwtUtils.getUserId(accessToken);
            WebSocketUsers.put(session.getId(), session, clientType, Long.parseLong(userId));

            if (clientType == 1) {
                LOGGER.info("\n 用户端建立连接 - {}", session);
                WebSocketUsers.sendMessageToUserByText(session, "用户端连接成功");
            } else if (clientType == 2) {
                LOGGER.info("\n 拍卖师端建立连接 - {}", session);
                WebSocketUsers.sendMessageToUserByText(session, "拍卖师端连接成功");
            }
            LOGGER.info("\n 当前人数 - {}", WebSocketUsers.getUsers().size());
        }
    }

    @OnClose
    public void onClose(Session session) {
        LOGGER.info("\n 关闭连接 - {}", session);
        WebSocketUsers.remove(session.getId());
        SemaphoreUtils.release(socketSemaphore);
    }

    @OnError
    public void onError(Session session, Throwable exception) throws Exception {
        if (session.isOpen()) {
            session.close();
        }
        String sessionId = session.getId();
        LOGGER.info("\n 连接异常 - {}", sessionId);
        LOGGER.info("\n 异常信息 - {}", exception);
        WebSocketUsers.remove(sessionId);
        SemaphoreUtils.release(socketSemaphore);
    }

    @OnMessage
    public void onMessage(String message, Session session) {
        String msg = message.replace("你", "我").replace("吗", "").replace("PING", "PONG")
                .replace("ping", "pong");
        WebSocketUsers.sendMessageToUserByText(session, msg);
    }
}