package com.xcong.excoin.modules.gateApi.wsHandler.handler;
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import com.alibaba.fastjson.JSONArray;
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import com.alibaba.fastjson.JSONObject;
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import com.xcong.excoin.modules.blackchain.service.DateUtil;
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import com.xcong.excoin.modules.gateApi.GateGridTradeService;
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import com.xcong.excoin.modules.gateApi.wsHandler.GateChannelHandler;
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import lombok.extern.slf4j.Slf4j;
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import org.java_websocket.client.WebSocketClient;
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import java.math.BigDecimal;
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/**
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* K 线（Candlestick）频道处理器。
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*
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* <h3>特点</h3>
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* 公开频道，无需 HMAC-SHA512 认证签名。订阅 1m 周期的 K 线数据。
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*
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* <h3>数据流</h3>
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* <pre>
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* WebSocket 推送 update event
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* → handleMessage() → 解析 OHLCV → log 打印 → gridTradeService.onKline(closePx)
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* → WAITING_KLINE: 首次 K 线触发基底双开
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* → ACTIVE: 驱动 processShortGrid + processLongGrid 网格触发
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* </pre>
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*
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* <h3>订阅格式</h3>
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* payload: {@code ["1m", contract]}
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*
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* @author Administrator
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*/
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@Slf4j
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public class CandlestickChannelHandler implements GateChannelHandler {
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private static final String CHANNEL_NAME = "futures.candlesticks";
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/** K 线周期，固定 1 分钟 */
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private static final String INTERVAL = "1m";
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/** 合约名称 */
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private final String contract;
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/** 网格交易服务，接收 K 线回调 */
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private final GateGridTradeService gridTradeService;
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/**
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* @param contract 合约名称（如 ETH_USDT）
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* @param gridTradeService 网格交易策略服务实例
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*/
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public CandlestickChannelHandler(String contract, GateGridTradeService gridTradeService) {
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this.contract = contract;
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this.gridTradeService = gridTradeService;
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}
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/** @return 频道名称 "futures.candlesticks" */
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@Override
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public String getChannelName() { return CHANNEL_NAME; }
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/**
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* 发送 K 线频道订阅请求（公开频道，无需签名）。
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*
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* <h3>订阅格式</h3>
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* <pre>
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* {
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* "time": <unix时间戳(秒)>,
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* "channel": "futures.candlesticks",
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* "event": "subscribe",
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* "payload": ["1m", "{contract}"]
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* }
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* </pre>
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*/
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@Override
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public void subscribe(WebSocketClient ws) {
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JSONObject msg = new JSONObject();
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msg.put("time", System.currentTimeMillis() / 1000);
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msg.put("channel", CHANNEL_NAME);
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msg.put("event", "subscribe");
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JSONArray payload = new JSONArray();
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payload.add(INTERVAL);
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payload.add(contract);
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msg.put("payload", payload);
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ws.send(msg.toJSONString());
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log.info("[{}] 订阅成功, 合约:{}, 周期:{}", CHANNEL_NAME, contract, INTERVAL);
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}
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/**
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* 发送 K 线频道取消订阅请求。
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*/
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@Override
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public void unsubscribe(WebSocketClient ws) {
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JSONObject msg = new JSONObject();
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msg.put("time", System.currentTimeMillis() / 1000);
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msg.put("channel", CHANNEL_NAME);
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msg.put("event", "unsubscribe");
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JSONArray payload = new JSONArray();
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payload.add(INTERVAL);
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payload.add(contract);
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msg.put("payload", payload);
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ws.send(msg.toJSONString());
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log.info("[{}] 取消订阅成功", CHANNEL_NAME);
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}
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/**
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* 处理 K 线推送消息。
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*
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* <h3>数据提取</h3>
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* result[0] 中提取：
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* <ul>
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* <li>c（close）：收盘价 → 传给 gridTradeService.onKline()</li>
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* <li>n（name）：烛线名称（如 "1m_ETH_USDT"）</li>
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* <li>t（time）：烛线起始时间戳</li>
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* <li>w（window_close）：烛线是否完结（仅日志输出，不做门控）</li>
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* </ul>
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*
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* <h3>注意</h3>
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* 不判断 w（已完结）——策略需要 tick 级实时响应价格变动，
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* 而非等 1 分钟烛线完结后才行动。
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*
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* @param response WebSocket 推送的完整 JSON
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* @return true 表示已处理（匹配成功）
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*/
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@Override
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public boolean handleMessage(JSONObject response) {
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if (!CHANNEL_NAME.equals(response.getString("channel"))) {
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return false;
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}
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try {
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JSONArray resultArray = response.getJSONArray("result");
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if (resultArray == null || resultArray.isEmpty()) { log.warn("[{}] 数据为空", CHANNEL_NAME); return true; }
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JSONObject data = resultArray.getJSONObject(0);
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BigDecimal closePx = new BigDecimal(data.getString("c"));
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log.info("========== Gate K线数据 ==========");
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log.info("名称: {} 时间: {}", data.getString("n"), DateUtil.TimeStampToDateTime(data.getLong("t")));
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log.info("收盘: {} 已完结: {}",data.getString("c"),data.getBooleanValue("w"));
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log.info("==================================");
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if (gridTradeService != null) {
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gridTradeService.onKline(closePx);
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}
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} catch (Exception e) { log.error("[{}] 处理数据失败", CHANNEL_NAME, e); }
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return true;
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}
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}
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