package org.example.websocket.server;

import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;
import lombok.NonNull;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;

import javax.websocket.*;
import javax.websocket.server.ServerEndpoint;
import java.io.IOException;
import java.lang.reflect.Type;
import java.util.Map;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.atomic.AtomicInteger;

/**
 * @ClassDescription: websocket服务端
 * @JdkVersion: 1.8
 * @Created: 2023/8/31 14:59
 */
@Slf4j
@Component
@ServerEndpoint("/websocket-server")
public class WsServer {

    private Session session;
    private static AtomicInteger onlineCount = new AtomicInteger(0);
    private static CopyOnWriteArrayList<WsServer> wsServers = new CopyOnWriteArrayList<>();

    @OnOpen
    public void onOpen(Session session) {
        this.session = session;
        int count = onlineCount.incrementAndGet();
        wsServers.add(this);
        log.info("与客户端连接成功，当前连接的客户端数量为：{}", count);
    }

    @OnError
    public void onError(Session session, @NonNull Throwable throwable) {
        log.error("连接发生报错");
        throwable.printStackTrace();
    }

    @OnClose
    public void onClose() {
        int count = onlineCount.decrementAndGet();
        wsServers.remove(this);
        log.info("服务端断开连接，当前连接的客户端数量为：{}", count);
    }

    @OnMessage
    public void sendMessage(String message) throws IOException {
        Map<String, Object> map = jsonToMap(message);
        if(map.get("pid").equals("00000001")){
            System.out.println(message);
        }
        try {
            if (session.isOpen()) {
                this.session.getBasicRemote().sendText(message);
            }
        } catch (IOException e) {
            throw new IOException("消息发送失败", e);
        }
    }

    public void sendMessageToAll(String message) throws IOException {
        for (WsServer wsServer : wsServers) {
            wsServer.sendMessage(message);
        }
    }


    @PostMapping("/send2AllC")
    public void sendMessageToAll1(@RequestBody String message) throws  IOException {
        CopyOnWriteArrayList<WsServer> ws = wsServers;
        for (WsServer wsServer : ws){
            wsServer.sendMessage(message);
        }
    }

    public static Map<String, Object> jsonToMap(String json) {
        Gson gson = new Gson();
        Type type = new TypeToken<Map<String, Object>>(){}.getType();
        return gson.fromJson(json, type);
    }

}