package com.nq.ws;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;
import com.nq.enums.EStockType;
import com.nq.pojo.StockRealTimeBean;
import com.nq.utils.redis.RedisKeyUtil;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.java_websocket.client.WebSocketClient;
import org.java_websocket.handshake.ServerHandshake;

import java.io.IOException;
import java.lang.reflect.Type;
import java.net.URI;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Timer;
import java.util.TimerTask;

@Slf4j
public class WebsocketRunClient extends WebSocketClient {

    private static final int HTTP_CONNECT_TIMEOUT_MS = 2000;
    private static final int HTTP_SOCKET_TIMEOUT_MS = 3000;

    private static final CloseableHttpClient HTTP_CLIENT = HttpClients.custom()
            .setDefaultRequestConfig(RequestConfig.custom()
                    .setConnectTimeout(HTTP_CONNECT_TIMEOUT_MS)
                    .setConnectionRequestTimeout(HTTP_CONNECT_TIMEOUT_MS)
                    .setSocketTimeout(HTTP_SOCKET_TIMEOUT_MS)
                    .build())
            .setMaxConnTotal(20)
            .setMaxConnPerRoute(10)
            .build();

    private final EStockType eStockType;
    private Timer heartbeatTimer;
    private volatile boolean localNotifyEnabled = true;

    public WebsocketRunClient(URI serverUri, EStockType eStockType) {
        super(serverUri);
        this.eStockType = eStockType;
    }

    private void startHeartbeat() {
        stopHeartbeat();
        heartbeatTimer = new Timer("ws-heartbeat-" + eStockType.getCode(), true);
        heartbeatTimer.schedule(new TimerTask() {
            @Override
            public void run() {
                if (!isOpen()) {
                    return;
                }
                try {
                    sendAuthKey();
                } catch (Exception e) {
                    log.warn("websocket {} 心跳失败: {}", eStockType.getCode(), e.getMessage());
                }
            }
        }, 0, 3000);
    }

    private void stopHeartbeat() {
        if (heartbeatTimer != null) {
            heartbeatTimer.cancel();
            heartbeatTimer = null;
        }
    }

    private void sendAuthKey() {
        send(("key:" + eStockType.getStockKey() + ":" + eStockType.getContryId()).getBytes());
    }

    @Override
    public void onOpen(ServerHandshake serverHandshake) {
        sendAuthKey();
        startHeartbeat();
    }

    @Override
    public void onMessage(String s) {
        if ("pong".equals(s) || "身份验证成功".equals(s)) {
            log.debug("websocket {} 握手/心跳: {}", eStockType.getCode(), s);
            return;
        }
        try {
            Map<String, String> stringObjectMap = jsonToMap(s);
            StockRealTimeBean stockRealTimeBean = new StockRealTimeBean();
            stockRealTimeBean.setPid(stringObjectMap.get("Id"));
            stockRealTimeBean.setLast(stringObjectMap.get("Last"));
            stockRealTimeBean.setBid(stringObjectMap.get("Bid"));
            stockRealTimeBean.setAsk(stringObjectMap.get("Ask"));
            stockRealTimeBean.setHigh(stringObjectMap.get("High"));
            stockRealTimeBean.setLow(stringObjectMap.get("Low"));
            stockRealTimeBean.setPc(stringObjectMap.get("Chg"));
            stockRealTimeBean.setPcp(stringObjectMap.get("ChgPct") + "%");
            stockRealTimeBean.setTime(stringObjectMap.get("Time"));
            RedisKeyUtil.setCacheRealTimeStock(EStockType.IN, stockRealTimeBean);

            if (!stockRealTimeBean.getPcp().contains("-")) {
                stockRealTimeBean.setPcp("+" + stringObjectMap.get("ChgPct") + "%");
            }
            if (localNotifyEnabled) {
                ObjectMapper objectMapper = new ObjectMapper();
                sendLocal(objectMapper.writeValueAsString(stockRealTimeBean));
            }
            StockRealTimeBean stockDetailBean = new Gson().fromJson(s, StockRealTimeBean.class);
            RedisKeyUtil.setCacheRealTimeStock(EStockType.IN, stockDetailBean);
        } catch (Exception e) {
            log.warn("websocket {} 消息处理失败: {}", eStockType.getCode(), e.getMessage());
        }
    }

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

    @Override
    public void onClose(int i, String s, boolean b) {
        stopHeartbeat();
        log.info("websocket {} 连接关闭 code={} reason={} remote={}", eStockType.getCode(), i, s, b);
    }

    @Override
    public void onError(Exception e) {
        log.warn("websocket {} 错误: {}", eStockType.getCode(), e.getMessage());
    }

    /**
     * 推送本地通知服务；必须 consume 响应体，否则 HttpClient 连接池会泄漏。
     */
    public void sendLocal(String message) {
        HttpPost httpPost = new HttpPost("http://127.0.0.1:8001/api/sendNotification");
        CloseableHttpResponse response = null;
        try {
            List<BasicNameValuePair> params = new ArrayList<>();
            params.add(new BasicNameValuePair("message", message));
            httpPost.setEntity(new UrlEncodedFormEntity(params, StandardCharsets.UTF_8));
            response = HTTP_CLIENT.execute(httpPost);
            EntityUtils.consume(response.getEntity());
        } catch (IOException e) {
            localNotifyEnabled = false;
            log.warn("本地通知服务不可用，已暂停推送(127.0.0.1:8001): {}", e.getMessage());
        } finally {
            if (response != null) {
                try {
                    response.close();
                } catch (IOException ignored) {
                }
            }
        }
    }
}