package com.xcong.excoin.modules.gateApi;

import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.util.StrUtil;
import com.xcong.excoin.utils.dingtalk.DingTalkUtils;
import io.gate.gateapi.ApiClient;
import io.gate.gateapi.ApiException;
import io.gate.gateapi.GateApiException;
import io.gate.gateapi.api.AccountApi;
import io.gate.gateapi.api.FuturesApi;
import io.gate.gateapi.models.*;
import lombok.extern.slf4j.Slf4j;

import java.io.IOException;
import java.math.BigDecimal;
import java.math.RoundingMode;
import java.util.ArrayList;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

import com.xcong.excoin.modules.gateApi.wsHandler.handler.CandlestickChannelHandler;
import com.xcong.excoin.modules.gateApi.wsHandler.handler.PositionClosesChannelHandler;
import com.xcong.excoin.modules.gateApi.wsHandler.handler.PositionsChannelHandler;

/**
 * 网格交易策略引擎 — 多空对冲网格。
 *
 * <h3>策略原理</h3>
 * 以空仓基底入场价（shortBaseEntryPrice）为价格基准，向上/向下各生成一个价格网格队列。
 * 价格触发网格层级时挂条件单，成交后自动挂止盈单。每笔止盈盈利 = step - minTick。
 *
 * <h3>完整生命周期</h3>
 * <pre>
 *   init() → startGrid() → WAITING_KLINE
 *     ↓
 *   onKline(首根K线) → OPENING → 异步市价双开基底（开多+开空）
 *     ↓
 *   onPositionUpdate() → 基底成交 → baseLongOpened && baseShortOpened
 *     ↓
 *   tryGenerateQueues()
 *     ├── generateShortQueue()   ← 空仓价格队列（降序，从 shortBaseEntryPrice-step 向下）
 *     ├── generateLongQueue()    ← 多仓价格队列（升序，从 shortBaseEntryPrice+step 向上）
 *     ├── updateGridElements()   ← 构建 GridElement 列表 + TraderParam + 全局索引
 *     ├── 挂基座止盈单（ID=0 的 long/short takeProfit）
 *     └── 挂初始条件单（up=-1 多单, down=1 空单）
 *     ↓
 *   state = ACTIVE（每根K线反复执行以下循环）
 *     ↓
 *   onKline() → processLongGrid() + processShortGrid()
 *     ├── 匹配队列元素 → 队列补偿 → 保证金检查
 *     ├── 首元素方向：挂条件开仓单 → 订单ID + GridElement状态同步
 *     └── 反向守卫：在 downGrid 位置挂对向单（价格区间+trigger方向校验）
 *     ↓
 *   onOrderUpdate()  ← futures.orders / futures.autoorders 推送
 *     ├── 匹配止盈单ID → 清空止盈状态（已成交）
 *     └── 匹配挂单ID → 挂止盈条件单 → 止盈ID + GridElement状态同步
 *     ↓
 *   onPositionClose() → cumulativePnl 累加
 *     ├──  ≥ overallTp → STOPPED
 *     └──  ≤ -maxLoss → STOPPED
 * </pre>
 *
 * <h3>仓位线动态调整</h3>
 * <pre>
 *   onPositionUpdate() 中仓位均价变化后：
 *     longEntryPrice ↑ → 取消 高于 longEntryPrice 的空仓挂单（避免逆势空单）
 *     shortEntryPrice ↓ → 取消 低于 shortEntryPrice 的多仓挂单（避免逆势多单）
 * </pre>
 *
 * <h3>关键公式</h3>
 * <pre>
 *   step  = shortBaseEntryPrice × gridRate                      ← 网格绝对步长
 *   minTick = 10^(-priceScale)                                  ← 交易所最小价格单位
 *   多止盈 = gridPrice + (step - minTick)                       ← 多仓止盈价
 *   空止盈 = gridPrice - (step - minTick)                       ← 空仓止盈价
 *   单笔盈利 = (step - minTick) × contractMultiplier × quantity  ← USDT
 * </pre>
 *
 * <h3>线程模型</h3>
 * 所有 WS 回调（onKline/onPositionUpdate/onOrderUpdate 等）在 WS 回调线程中串行执行。
 * 下单/撤单操作提交到 GateTradeExecutor 的单线程池异步执行，避免阻塞 WS 线程。
 * stopGrid() 会将 state 设为 STOPPED，后续所有 WS 回调直接返回不再处理。
 *
 * @author Administrator
 */
@Slf4j
public class GateGridTradeService {

    public enum StrategyState {
        WAITING_KLINE, OPENING, ACTIVE, STOPPED
    }

    /**
     * 止盈条件单 order_type：仓位计划止盈止损 — 平多仓（支持部分平仓，size&lt;0）。
     * 注意：不能用 close-long-position（仅支持全平且双仓需 auto_size），
     * 必须用 plan-close-long-position 以支持指定张数部分平仓。
     */
    private static final String ORDER_TYPE_CLOSE_LONG = "plan-close-long-position";
    /**
     * 止盈条件单 order_type：仓位计划止盈止损 — 平空仓（支持部分平仓，size&gt;0）。
     * 注意：不能用 close-short-position（仅支持全平且双仓需 auto_size），
     * 必须用 plan-close-short-position 以支持指定张数部分平仓。
     */
    private static final String ORDER_TYPE_CLOSE_SHORT = "plan-close-short-position";

    private final GateConfig config;
    private final GateTradeExecutor executor;
    private final FuturesApi futuresApi;
    private static final String SETTLE = "usdt";

    private volatile StrategyState state = StrategyState.WAITING_KLINE;

    /** 空仓价格队列，降序排列（大→小），容量 gridQueueSize */
    private final List<BigDecimal> shortPriceQueue = Collections.synchronizedList(new ArrayList<>());
    /** 多仓价格队列，升序排列（小→大），容量 gridQueueSize */
    private final List<BigDecimal> longPriceQueue = Collections.synchronizedList(new ArrayList<>());

    /** 当前多仓条件单映射：订单ID → 止盈价格，订单成交后通过订单订阅推送匹配止盈 */
    private final Map<String, BigDecimal> currentLongOrderIds = Collections.synchronizedMap(new LinkedHashMap<>());
    /** 当前空仓条件单映射：订单ID → 止盈价格，订单成交后通过订单订阅推送匹配止盈 */
    private final Map<String, BigDecimal> currentShortOrderIds = Collections.synchronizedMap(new LinkedHashMap<>());

    /** 基底空头入场价 */
    private BigDecimal shortBaseEntryPrice;
    /** 基底多头入场价（仅记录，当前未被业务逻辑消费，保留以备后续使用） */
    private BigDecimal longBaseEntryPrice;
    /** 基底多头是否已开 */
    private volatile boolean baseLongOpened = false;
    /** 基底空头是否已开 */
    private volatile boolean baseShortOpened = false;

    /** 空头是否活跃（有仓位） */
    private volatile boolean shortActive = false;
    /** 多头是否活跃（有仓位） */
    private volatile boolean longActive = false;

    /** 价格驱动 空头是否挂单 */
    private volatile boolean shortEntryActive = false;
    /** 价格驱动 多头是否挂单 */
    private volatile boolean longEntryActive = false;

    private volatile BigDecimal lastKlinePrice;
    private volatile BigDecimal markPrice = BigDecimal.ZERO;
    private volatile BigDecimal cumulativePnl = BigDecimal.ZERO;
    private volatile BigDecimal unrealizedPnl = BigDecimal.ZERO;
    private volatile BigDecimal longEntryPrice = BigDecimal.ZERO;
    private volatile BigDecimal shortEntryPrice = BigDecimal.ZERO;
    private volatile BigDecimal longPositionSize = BigDecimal.ZERO;
    private volatile BigDecimal shortPositionSize = BigDecimal.ZERO;
    private Long userId;
    private volatile BigDecimal initialPrincipal = BigDecimal.ZERO;
    private volatile GateKlineWebSocketClient wsClient;

    /** 多仓挂单张数计数器：止损触发时用当前值挂单，随后+1；挂单成交后重置为1 */
    private volatile int longEntryQty = 1;
    /** 空仓挂单张数计数器：止损触发时用当前值挂单，随后+1；挂单成交后重置为1 */
    private volatile int shortEntryQty = 1;

    public GateGridTradeService(GateConfig config) {
        this.config = config;
        ApiClient apiClient = new ApiClient();
        apiClient.setBasePath(config.getRestBasePath());
        apiClient.setApiKeySecret(config.getApiKey(), config.getApiSecret());
        this.futuresApi = new FuturesApi(apiClient);
        this.executor = new GateTradeExecutor(apiClient, config.getContract());
    }

    // ---- 初始化 ----

    /**
     * 初始化策略环境。
     *
     * <h3>执行顺序</h3>
     * <ol>
     *   <li>获取用户 ID（用于私有频道订阅 payload）</li>
     *   <li>获取账户信息 → 记录初始本金</li>
     *   <li>如需要，切换为双向持仓模式</li>
     *   <li>如需要，调整持仓模式（single/dual）</li>
     *   <li>清除旧的止盈止损条件单</li>
     *   <li>平掉所有已有仓位</li>
     *   <li>设置杠杆倍数</li>
     * </ol>
     */
    public void init() {
        try {
            ApiClient detailClient = new ApiClient();
            detailClient.setBasePath(config.getRestBasePath());
            detailClient.setApiKeySecret(config.getApiKey(), config.getApiSecret());
            AccountDetail detail = new AccountApi(detailClient).getAccountDetail();
            this.userId = detail.getUserId();
            log.info("[Gate] 用户ID: {}", userId);

            FuturesAccount account = futuresApi.listFuturesAccounts(SETTLE);
            this.initialPrincipal = new BigDecimal(account.getTotal());
            log.info("[Gate] 初始本金: {} USDT", initialPrincipal);

            futuresApi.cancelPriceTriggeredOrderList(SETTLE, config.getContract());
            log.info("[Gate] 旧条件单已清除");
            closeExistingPositions();

            //设置持仓模式为双向持仓
            Boolean inDualMode = account.getInDualMode();
            if (!inDualMode) {
                try {
                    futuresApi.setDualModeCall(SETTLE,true,null).execute();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }

            try {
                futuresApi.updateDualModePositionLeverageCall(
                        SETTLE, config.getContract(), config.getLeverage(),
                        null, null).execute();
            } catch (IOException e) {
                e.printStackTrace();
            }

            if (!config.getMarginMode().equals(account.getMarginMode())) {

                UpdateDualCompPositionCrossModeRequest updateDualCompPositionCrossModeRequest = new UpdateDualCompPositionCrossModeRequest();
                updateDualCompPositionCrossModeRequest.setMode(config.getMarginMode());
                updateDualCompPositionCrossModeRequest.setContract(config.getContract());
                try {
                    futuresApi.updateDualCompPositionCrossModeCall(SETTLE, updateDualCompPositionCrossModeRequest, null).execute();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            log.info("[Gate] 持仓模式: {} 余额: {}", config.getPositionMode(), account.getAvailable());
            log.info("[Gate] 杠杆: {}x {}", config.getLeverage(), config.getMarginMode());
        } catch (GateApiException e) {
            log.error("[Gate] 初始化失败, label:{}, msg:{}", e.getErrorLabel(), e.getMessage());
        } catch (ApiException e) {
            log.error("[Gate] 初始化失败, code:{}", e.getCode());
        }
    }

    /**
     * 平掉当前合约的所有已有仓位。
     *
     * <h3>平仓策略</h3>
     * <ul>
     *   <li>单向持仓：size=相反数，reduceOnly=true，市价 IOC 平仓</li>
     *   <li>双向持仓：size=0，close=false，autoSize=LONG/SHORT，reduceOnly=true，市价 IOC 全平</li>
     * </ul>
     *
     * <h3>注意事项</h3>
     * 双向持仓模式下必须使用 autoSize 参数，不能直接传负数 size，
     * 否则 Gate API 会拒绝（双向模式下空头 size 为负是正常的持仓方向）。
     */
    private void closeExistingPositions() {
        try {
            List<Position> positions = futuresApi.listPositions(SETTLE).execute();
            if (positions == null || positions.isEmpty()) { log.info("[Gate] 无已有仓位"); return; }
            for (Position pos : positions) {
                if (!config.getContract().equals(pos.getContract())) {
                    continue;
                }
                String sizeStr = pos.getSize();
                long size = Long.parseLong(sizeStr);
                if (size == 0) {
                    continue;
                }
                String closeSize = size > 0 ? String.valueOf(-size) : String.valueOf(Math.abs(size));
                Position.ModeEnum mode = pos.getMode();
                FuturesOrder closeOrder = new FuturesOrder();
                closeOrder.setContract(config.getContract());
                closeOrder.setPrice("0");
                closeOrder.setTif(FuturesOrder.TifEnum.IOC);
                closeOrder.setReduceOnly(true);
                if (mode != null && mode.getValue() != null && mode.getValue().contains("dual")) {
                    closeOrder.setSize("0");
                    closeOrder.setClose(false);
                    closeOrder.setAutoSize(size > 0 ? FuturesOrder.AutoSizeEnum.LONG : FuturesOrder.AutoSizeEnum.SHORT);
                } else {
                    closeOrder.setSize(closeSize);
                }
                closeOrder.setText("t-grid-init-close");
                futuresApi.createFuturesOrder(SETTLE, closeOrder, null);
                log.info("[Gate] 平已有仓位, 方向:{}, size:{}, mode:{}", size > 0 ? "多" : "空", sizeStr, mode);
            }
        } catch (GateApiException e) {
            log.warn("[Gate] 平仓位失败, label:{}, msg:{}", e.getErrorLabel(), e.getMessage());
        } catch (Exception e) {
            log.warn("[Gate] 平仓位异常", e);
        }
    }

    // ---- 启动/停止 ----

    /**
     * 启动网格策略。重置所有状态变量和队列，进入 WAITING_KLINE 等待首根 K 线。
     * 仅当当前状态为 WAITING_KLINE 或 STOPPED 时才允许启动。
     */
    public void startGrid() {
        if (state != StrategyState.WAITING_KLINE && state != StrategyState.STOPPED) {
            log.warn("[Gate] 策略已在运行中, state:{}", state);
            return;
        }
        state = StrategyState.WAITING_KLINE;
        cumulativePnl = BigDecimal.ZERO;
        unrealizedPnl = BigDecimal.ZERO;
        markPrice = BigDecimal.ZERO;
        longEntryPrice = BigDecimal.ZERO;
        shortEntryPrice = BigDecimal.ZERO;
        longPositionSize = BigDecimal.ZERO;
        shortPositionSize = BigDecimal.ZERO;
        baseLongOpened = false;
        baseShortOpened = false;
        longActive = false;
        shortActive = false;
        shortPriceQueue.clear();
        longPriceQueue.clear();
        currentLongOrderIds.clear();
        currentShortOrderIds.clear();
        longEntryQty = 1;
        shortEntryQty = 1;

        // 每次重启重新获取当前本金
        refreshInitialPrincipal();

        log.info("[Gate] 网格策略已启动, 当前本金: {} USDT", initialPrincipal);
    }

    /**
     * 重新获取当前账户权益作为初始本金。
     */
    private void refreshInitialPrincipal() {
        try {
            FuturesAccount account = futuresApi.listFuturesAccounts(SETTLE);
            this.initialPrincipal = new BigDecimal(account.getTotal());
        } catch (Exception e) {
            log.warn("[Gate] 获取初始化本金失败，使用旧值: {}", initialPrincipal);
        }
    }

    /**
     * 停止网格策略。取消所有条件单 → 关闭交易线程池。
     * 状态设为 STOPPED，K 线回调将直接返回不再处理。
     */
    public void stopGrid() {
        state = StrategyState.STOPPED;
        executor.cancelAllPriceTriggeredOrders();
        executor.shutdown();
        log.info("[Gate] 策略已停止, 累计盈亏: {}", cumulativePnl);
    }

    // ---- K线回调 ----

    /**
     * K 线回调入口。由 {@link CandlestickChannelHandler} 在收到 WebSocket K 线推送时调用。
     *
     * <h3>处理流程</h3>
     * <ol>
     *   <li>更新 lastKlinePrice → 计算 unrealizedPnl（浮动盈亏）</li>
     *   <li>STOPPED → 直接返回（仅保留盈亏更新）</li>
     *   <li>WAITING_KLINE → 切换为 OPENING → 异步提交基底双开（开多+开空）</li>
     *   <li>OPENING → 等待仓位推送回调生成队列，此处返回</li>
     *   <li>ACTIVE → 执行 processShortGrid + processLongGrid</li>
     * </ol>
     *
     * <h3>注意</h3>
     * 基底双开下单提交到 GateTradeExecutor 的独立线程池中异步执行，
     * 成交状态由 onPositionUpdate 回调驱动，不阻塞 WS 回调线程。
     *
     * @param closePrice K 线收盘价（即当前最新成交价）
     */
    public void onKline(BigDecimal closePrice) {
        lastKlinePrice = closePrice;
        updateUnrealizedPnl();
        if (state == StrategyState.STOPPED) {
            try {
                futuresApi.cancelPriceTriggeredOrderList(SETTLE, config.getContract());
            } catch (ApiException e) {
                e.printStackTrace();
            }
            closeExistingPositions();

            BigDecimal totalPnl = cumulativePnl.add(unrealizedPnl);
            log.info("[Gate] 已实现:{}, 未实现:{}, 合计:{}",
                    cumulativePnl, unrealizedPnl, totalPnl);

            startGrid();
            return;
        }

        //初始化0位置的开仓，并且用空的开仓价格，作为价格基准来划分网格
        if (state == StrategyState.WAITING_KLINE) {
            if (wsClient == null || !wsClient.areAllSubscribed()) {
                return;
            }
            state = StrategyState.OPENING;
            log.info("[Gate] 首根K线到达，开基底仓位 多空各{}张...", config.getBaseQuantity());
            executor.openLong(config.getBaseQuantity(), (orderId) -> {
                TraderParam baseLongTp = TraderParam.builder()
                        .entryOrderId(orderId)
                        .build();
                config.setBaseLongTraderParam(baseLongTp);
            }, null);
            executor.openShort(negate(config.getBaseQuantity()), (orderId) -> {
                TraderParam baseShortTp = TraderParam.builder()
                        .entryOrderId(orderId)
                        .build();
                config.setBaseShortTraderParam(baseShortTp);
            }, null);

            return;
        }

        if (state != StrategyState.ACTIVE) {
            return;
        }
        checkProfitAndReset();


        if (state == StrategyState.ACTIVE &&
                longActive == false &&
                    longPositionSize.compareTo(BigDecimal.ZERO) == 0 &&
                        longEntryActive){
            processShortGrid(closePrice);
        }


        if (state == StrategyState.ACTIVE &&
                shortActive == false &&
                        shortPositionSize.compareTo(BigDecimal.ZERO) == 0 &&
                             shortEntryActive){
            processLongGrid(closePrice);
        }
    }

    // ---- 仓位推送回调 ----

    /**
     * 仓位推送回调。由 {@link PositionsChannelHandler} 在收到 WebSocket 仓位更新时调用。
     *
     * <h3>处理逻辑</h3>
     * <ul>
     *   <li><b>有仓位 (size ≠ 0)</b>：
     *     <ul>
     *       <li>首次开仓（基底）：标记 baseOpened=true，记录基底入场价，双基底都成交后生成网格队列</li>
     *       <li>仓位净减少（size.abs() < 之前记录值）：止盈平仓后 → 检查反向条件单条件 →
     *           满足时以 entryPrice ± step 为止盈价挂反向市价单（订单ID + 止盈价存入 Map）</li>
     *       <li>仓位净增加或不变：仅更新 positionSize，止盈由 {@link #onOrderUpdate} 通过订单订阅匹配处理</li>
     *     </ul>
     *   </li>
     *   <li><b>无仓位 (size = 0)</b>：清空活跃标记和持仓量</li>
     *   <li><b>Map 截断</b>：currentLongOrderIds / currentShortOrderIds 超过 5 个时，
     *       从 LinkedHashMap 头部删除最旧条目，保留最新 5 个</li>
     * </ul>
     *
     * @param contract   合约名称
     * @param mode       持仓模式（DUAL_LONG / DUAL_SHORT）
     * @param size       持仓张数（多头为正、空头为负）
     * @param entryPrice 当前持仓加权均价（交易所计算）
     */
    public void onPositionUpdate(String contract, Position.ModeEnum mode, BigDecimal size,
                                  BigDecimal entryPrice) {
        if (state == StrategyState.STOPPED || state == StrategyState.WAITING_KLINE) {
            return;
        }

        boolean hasPosition = size.abs().compareTo(BigDecimal.ZERO) > 0;

        if (Position.ModeEnum.DUAL_LONG == mode) {
            if (hasPosition) {
                longActive = true;
                longEntryPrice = entryPrice;
                if (!baseLongOpened) {
                    longPositionSize = size;
                    longBaseEntryPrice = entryPrice;
                    baseLongOpened = true;
                    log.info("[Gate] 基底多成交价: {}", longBaseEntryPrice);
                    tryGenerateQueues();
                }else {
                    longPositionSize = size;
//                    checkShortEntryOrderToCancel();
//                    checkLongEntryOrderToCancel();
                }
            } else {
                if (longActive && state == StrategyState.ACTIVE) {
//                    log.info("[Gate] 多仓持仓归零，重置策略");
//                    handlePositionZeroAndReset("多仓");
                }
                longEntryActive = true;
                longActive = false;
                longPositionSize = BigDecimal.ZERO;
            }
        } else if (Position.ModeEnum.DUAL_SHORT == mode) {
            if (hasPosition) {
                shortActive = true;
                shortEntryPrice = entryPrice;
                if (!baseShortOpened) {
                    shortPositionSize = size.abs();
                    shortBaseEntryPrice = entryPrice;
                    baseShortOpened = true;
                    log.info("[Gate] 基底空成交价: {}", shortBaseEntryPrice);
                    tryGenerateQueues();
                }else {
                    shortPositionSize = size.abs();
//                    checkShortEntryOrderToCancel();
//                    checkLongEntryOrderToCancel();
                }
            } else {
                if (shortActive && state == StrategyState.ACTIVE) {
//                    log.info("[Gate] 空仓持仓归零，重置策略");
//                    handlePositionZeroAndReset("空仓");
                }
                shortEntryActive = true;
                shortActive = false;
                shortPositionSize = BigDecimal.ZERO;
            }
        }
    }

    private void checkShortEntryOrderToCancel() {
        List<GridElement> allLongOrders = GridElement.findAllShortOrders(shortEntryPrice);
        if (CollUtil.isNotEmpty(allLongOrders)){
            GridElement keep = allLongOrders.stream()
                    .min((a, b) -> a.getGridPrice().compareTo(b.getGridPrice()))
                    .orElse(null);
            for (GridElement e : allLongOrders) {
                if (e == keep) {
                    continue;
                }
                executor.cancelConditionalOrder(
                        e.getShortOrderId(),
                        orderId -> {
                            shortEntryTraderIdParam(
                                    e,
                                    null,
                                    false
                            );
                        }
                );
                if (e.getShortTakeProfitOrderId() != null){
                    executor.cancelConditionalOrder(
                            e.getShortTakeProfitOrderId(),
                            orderId -> {
                                shortTakeProfitTraderIdParam(
                                        e,
                                        null,
                                        false
                                );
                            }
                    );
                }
            }
        }
    }

    private void checkLongEntryOrderToCancel() {
        List<GridElement> allShortOrders = GridElement.findAllLongOrders(longEntryPrice);
        if (CollUtil.isNotEmpty(allShortOrders)){
            GridElement keep = allShortOrders.stream()
                    .max((a, b) -> a.getGridPrice().compareTo(b.getGridPrice()))
                    .orElse(null);
            for (GridElement e : allShortOrders) {
                if (e == keep) {
                    continue;
                }
                executor.cancelConditionalOrder(
                        e.getLongOrderId(),
                        orderId -> {
                            longEntryTraderIdParam(
                                    e,
                                    null,
                                    false
                            );
                        }
                );

                if (e.getLongTakeProfitOrderId() != null){
                    executor.cancelConditionalOrder(
                            e.getLongTakeProfitOrderId(),
                            orderId -> {
                                longTakeProfitTraderIdParam(
                                        e,
                                        null,
                                        false
                                );
                            }
                    );
                }
            }
        }
    }

    // ---- 平仓推送回调 ----

    /**
     * 平仓推送回调。由 {@link PositionClosesChannelHandler} 在收到平仓推送时调用。
     *
     * <h3>累加规则</h3>
     * cumulativePnl += pnl。止盈平仓时 pnl > 0，止损平仓时 pnl < 0。
     * 累加后检查停止条件：≥ overallTp 或 ≤ -maxLoss。
     *
     * @param contract 合约名称
     * @param side     平仓方向（"long" / "short"）
     * @param pnl      本次平仓的盈亏金额
     */
    public void onPositionClose(String contract, String side, BigDecimal pnl) {
        if (state == StrategyState.STOPPED) {
            return;
        }
        cumulativePnl = cumulativePnl.add(pnl);
        updateUnrealizedPnl();
        BigDecimal totalPnl = cumulativePnl.add(unrealizedPnl);
        log.info("[Gate] 已实现:{}, 未实现:{}, 合计:{}",
                cumulativePnl, unrealizedPnl, totalPnl);
        if(totalPnl.compareTo(config.getMaxLoss().negate()) <= 0) {
            String logMessage = StrUtil.format("[Gate] 已达亏损风险值(合计{}), 已实现:{}, 未实现:{}",
                    totalPnl, cumulativePnl, unrealizedPnl);
            log.info(logMessage);

            DingTalkUtils.getDefault().sendActionCard("风险提醒", logMessage, config.getApiKey(), "");
        }
    }

    // ---- 订单推送回调 ----

    /**
     * 订单推送回调。由 OrdersChannelHandler 在收到订单更新推送时调用。
     *
     * <h3>处理逻辑</h3>
     * 当订单状态为 finished 且 finish_as 为 filled 时，
     * 从 {@link #currentLongOrderIds} / {@link #currentShortOrderIds} 中匹配订单ID，
     * 取出止盈价格并挂止盈单。匹配成功后从 Map 中移除该条目，防止重复挂单。
     *
     * @param orderId  订单 ID
     * @param status   订单状态（open / finished）
     * @param finishAs 订单结束方式（filled / cancelled / ioc 等）
     */
    public void onOrderUpdate(String orderId, String status, String finishAs) {
        if (!"finished".equals(status) || !"filled".equals(finishAs)) {
            return;
        }

        /**
         * 匹配止盈单止盈
         */
        GridElement byLongTakeProfitOrderId = GridElement.findByLongTakeProfitOrderId(orderId);
        if (byLongTakeProfitOrderId != null){
            longTakeProfitTraderIdParam(
                    byLongTakeProfitOrderId,
                    null,
                    false
            );
//            longEntryTraderIdParam(
//                    byLongTakeProfitOrderId,
//                    null,
//                    false
//            );
        }
        GridElement byShortTakeProfitOrderId = GridElement.findByShortTakeProfitOrderId(orderId);
        if (byShortTakeProfitOrderId != null){
            shortTakeProfitTraderIdParam(
                    byShortTakeProfitOrderId,
                    null,
                    false
            );
//            shortEntryTraderIdParam(
//                    byShortTakeProfitOrderId,
//                    null,
//                    false
//            );
        }

        /**
         * 匹配挂单
         */
        GridElement longGridElement = GridElement.findByLongOrderId(orderId);
        if (longGridElement != null) {
            if (longGridElement.isHasLongOrder()){
                longEntryTraderIdParam(
                        longGridElement,
                        null,
                        false
                );
                if (longGridElement.getLongTakeProfitOrderId() == null){
                    BigDecimal longTp = longGridElement.getLongTraderParam().getTakeProfitPrice();
                    if (longTp != null) {
                        executor.placeTakeProfit(longTp,
                                FuturesPriceTrigger.RuleEnum.NUMBER_1,
                                ORDER_TYPE_CLOSE_LONG,
                                negate(config.getQuantity()),
                                (profitId) -> {
                                    longTakeProfitTraderIdParam(
                                            longGridElement,
                                            profitId,
                                            true
                                    );
                                });
                        log.info("[Gate] 多单成交匹配止盈, orderId:{}, 止盈价:{}, size:{}", orderId, longTp, negate(config.getQuantity()));
                        return;
                    }
                }
            }
        }
        GridElement shortGridElement = GridElement.findByShortOrderId(orderId);
        if (shortGridElement != null) {
            if (shortGridElement.isHasShortOrder()){
                shortEntryTraderIdParam(
                        shortGridElement,
                        null,
                        false
                );
                if (shortGridElement.getShortTakeProfitOrderId() == null){
                    BigDecimal shortTp = shortGridElement.getShortTraderParam().getTakeProfitPrice();
                    if (shortTp != null) {
                        executor.placeTakeProfit(shortTp,
                                FuturesPriceTrigger.RuleEnum.NUMBER_2,
                                ORDER_TYPE_CLOSE_SHORT,
                                config.getQuantity(),
                                (profitId) -> {
                                    shortTakeProfitTraderIdParam(
                                            shortGridElement,
                                            profitId,
                                            true
                                    );
                                });
                        log.info("[Gate] 空单成交匹配止盈, orderId:{}, 止盈价:{}, size:{}", orderId, shortTp, config.getQuantity());
                    }
                }
            }
        }
    }

    /**
     * 用户私有成交回调。由 {@link com.xcong.excoin.modules.gateApi.wsHandler.handler.UserTradesChannelHandler}
     * 在收到 {@code futures.usertrades} 推送时调用。
     *
     * @param contract 合约名称
     * @param orderId  订单 ID
     * @param price    成交价格
     * @param size     成交数量
     * @param role     用户角色（maker / taker）
     * @param fee      手续费
     */
    public void onUserTrade(String contract, String orderId, BigDecimal price, String size, String role, BigDecimal fee) {
        if (state == StrategyState.STOPPED) {
            return;
        }
        log.info("[Gate] 成交明细, 合约:{}, 订单ID:{}, 价格:{}, 数量:{}, 角色:{}, 手续费:{}",
                contract, orderId, price, size, role, fee);
    }

    /**
     * 自动订单（条件单）状态变更回调。
     * 由 {@link com.xcong.excoin.modules.gateApi.wsHandler.handler.AutoOrdersChannelHandler}
     * 在收到 {@code futures.autoorders} 推送时调用。
     *
     * @param orderId   条件单 ID
     * @param status    订单状态（open / finished / cancelled）
     * @param reason    变更原因
     * @param orderType 订单类型（plan-close-long-position 等）
     */
    public void onAutoOrder(String orderId, String status, String reason, String orderType, String tradeId) {
        if (state == StrategyState.STOPPED) {
            return;
        }
        log.info("[Gate] 条件单状态变更, id:{}, status:{}, reason:{}, order_type:{}",
                orderId, status, reason, orderType);
        if (!"finished".equals(status)) {
            return;
        }

        GridElement longStopLossElem = GridElement.findByLongStopLossOrderId(orderId);
        if (longStopLossElem != null) {
            handleLongStopLossTriggered(longStopLossElem);
            return;
        }
        GridElement shortStopLossElem = GridElement.findByShortStopLossOrderId(orderId);
        if (shortStopLossElem != null) {
            handleShortStopLossTriggered(shortStopLossElem);
            return;
        }

//        GridElement byShortTakeProfitOrderId = GridElement.findByShortTakeProfitOrderId(orderId);
//        if (byShortTakeProfitOrderId != null){
//            shortTakeProfitTraderIdParam(
//                    byShortTakeProfitOrderId,
//                    null,
//                    false
//            );
//            shortEntryTraderIdParam(
//                    byShortTakeProfitOrderId,
//                    null,
//                    false
//            );
//            TPonUserTradeShortEntry(byShortTakeProfitOrderId);
//        }
//        GridElement byLongTakeProfitOrderId = GridElement.findByLongTakeProfitOrderId(orderId);
//        if (byLongTakeProfitOrderId != null){
//            longTakeProfitTraderIdParam(
//                    byLongTakeProfitOrderId,
//                    null,
//                    false
//            );
//            longEntryTraderIdParam(
//                    byLongTakeProfitOrderId,
//                    null,
//                    false
//            );
//            TPonUserTradeLongEntry(byLongTakeProfitOrderId);
//        }

        GridElement shortGridElement = GridElement.findByShortOrderId(orderId);
        if (shortGridElement != null) {
            if (shortGridElement.isHasShortOrder() && !tradeId.equals("0")){
                int filledQty = Integer.parseInt(shortGridElement.getShortTraderParam().getQuantity());
                shortEntryTraderIdParam(shortGridElement, null, false);
                shortEntryQty = 1;
                extendShortStopLoss(filledQty);
                log.info("[Gate] 空单成交 gridId:{}, qty:{}, 追挂止损", shortGridElement.getId(), filledQty);
//                checkMaxPositionAndPlaceTakeProfit(false, shortGridElement.getId());
            }
        }
        GridElement longGridElement = GridElement.findByLongOrderId(orderId);
        if (longGridElement != null) {
            if (longGridElement.isHasLongOrder() && !tradeId.equals("0")){
                int filledQty = Integer.parseInt(longGridElement.getLongTraderParam().getQuantity());
                longEntryTraderIdParam(longGridElement, null, false);
                longEntryQty = 1;
                extendLongStopLoss(filledQty);
                log.info("[Gate] 多单成交 gridId:{}, qty:{}, 追挂止损", longGridElement.getId(), filledQty);
//                checkMaxPositionAndPlaceTakeProfit(true, longGridElement.getId());
            }
        }
    }

    private void TPonUserTradeShortEntry(GridElement gridElement) {
        if (!isMarginSafe()) {
            log.warn("[Gate] 保证金超限，跳过挂条件单");
        } else {
            // 判断网格是否能开多仓，如果不能则跳过
            GridElement upGridElement = GridElement.findById(gridElement.getUpId());
            if (upGridElement != null){
                BigDecimal upGridPrice = upGridElement.getGridPrice();
                TraderParam upLongTraderParam = upGridElement.getLongTraderParam();
                if (
                        !upGridElement.isHasLongOrder() &&
                                upGridPrice.compareTo(longEntryPrice) <= 0
                ){
                    placeEntryOrderWithPreFlag(upGridElement, true,
                            upLongTraderParam.getEntryPrice(),
                            FuturesPriceTrigger.RuleEnum.NUMBER_1,
                            upLongTraderParam.getQuantity());
                }
            }
        }
    }

    private void TPonUserTradeLongEntry(GridElement gridElement) {
        if (!isMarginSafe()) {
            log.warn("[Gate] 保证金超限，跳过挂条件单");
        } else {
            // 判断网格是否能开空仓，如果不能则跳过
            GridElement downGridElement = GridElement.findById(gridElement.getDownId());
            if (downGridElement != null){

                BigDecimal downGridPrice = downGridElement.getGridPrice();

                TraderParam shortTraderParam = downGridElement.getShortTraderParam();
                if (
                        !downGridElement.isHasShortOrder() &&
                                downGridPrice.compareTo(shortEntryPrice) >= 0
                ){
                    placeEntryOrderWithPreFlag(downGridElement, false,
                            shortTraderParam.getEntryPrice(),
                            FuturesPriceTrigger.RuleEnum.NUMBER_2,
                            negate(config.getQuantity()));
                }
            }
        }
    }

    private void onUserTradeShortEntry(GridElement gridElement) {
        if (!isMarginSafe()) {
            log.warn("[Gate] 保证金超限，跳过挂条件单");
        } else {
            //下一个开仓位置
            GridElement UpGridElement = GridElement.findById(gridElement.getDownId());
            BigDecimal newLongFirst = UpGridElement.getGridPrice();

            // 判断网格是否能开空仓，如果不能则跳过
            if (UpGridElement != null) {

                if (!UpGridElement.isHasShortOrder() && shortEntryPrice.compareTo(newLongFirst) > 0) {

                    TraderParam upShortTraderParam = UpGridElement.getShortTraderParam();
                    placeEntryOrderWithPreFlag(UpGridElement, false,
                            upShortTraderParam.getEntryPrice(),
                            FuturesPriceTrigger.RuleEnum.NUMBER_2,
                            negate(upShortTraderParam.getQuantity()));
                }
            }
        }
    }

    private void onUserTradeLongEntry(GridElement gridElement) {
        if (!isMarginSafe()) {
            log.warn("[Gate] 保证金超限，跳过挂条件单");
        } else {
            //下一个开仓位置
            GridElement UpGridElement = GridElement.findById(gridElement.getUpId());
            BigDecimal newLongFirst = UpGridElement.getGridPrice() ;

            // 判断网格是否能开多仓，如果不能则跳过
            if (UpGridElement != null) {

                if (!UpGridElement.isHasLongOrder() && longEntryPrice.compareTo(newLongFirst) < 0) {
                    TraderParam upLongTraderParam = UpGridElement.getLongTraderParam();
                    placeEntryOrderWithPreFlag(UpGridElement, true,
                            upLongTraderParam.getEntryPrice(),
                            FuturesPriceTrigger.RuleEnum.NUMBER_1,
                            config.getQuantity());
                }
            }
        }
    }

    // ---- 网格队列处理 ----

    /**
     * 尝试生成网格队列。双基底（多+空）都成交后才触发：
     * <ol>
     *   <li>生成空仓价格队列（降序）和多仓价格队列（升序）</li>
     *   <li>挂初始多仓条件单（触发价 = 多仓队列首元素，rule=NUMBER_1 ≥触发价时开多），
     *       止盈价 = 触发价 + step，通过 onSuccess 回调将 orderId → 止盈价存入 currentLongOrderIds</li>
     *   <li>挂初始空仓条件单（触发价 = 空仓队列首元素，rule=NUMBER_2 ≤触发价时开空），
     *       止盈价 = 触发价 − step，通过 onSuccess 回调将 orderId → 止盈价存入 currentShortOrderIds</li>
     *   <li>状态切换为 ACTIVE</li>
     * </ol>
     * 条件单成交后由 {@link #onOrderUpdate} 匹配止盈价并挂止盈条件单。
     */
    private void tryGenerateQueues() {
        if (baseLongOpened && baseShortOpened) {
            generateShortQueue();
            generateLongQueue();
            updateGridElements();

            GridElement baseGridElement = GridElement.findById(0);
            TraderParam baseLongTraderParam = config.getBaseLongTraderParam();
            baseGridElement.setLongOrderId(baseLongTraderParam.getEntryOrderId());
            baseGridElement.setHasLongOrder(true);
            TraderParam baseShortTraderParam = config.getBaseShortTraderParam();
            baseGridElement.setShortOrderId(baseShortTraderParam.getEntryOrderId());
            baseGridElement.setHasShortOrder(true);

            int shortTime = Integer.parseInt(config.getBaseQuantity()) + 1;
            for (int id = 2; id <= shortTime; id++) {
                GridElement elem = GridElement.findById(id);
                if (elem == null) {
                    continue;
                }
                BigDecimal triggerPrice = elem.getGridPrice();
                int finalId = id;
                executor.placeTakeProfit(
                        triggerPrice,
                        FuturesPriceTrigger.RuleEnum.NUMBER_1,
                        ORDER_TYPE_CLOSE_SHORT,
                        config.getQuantity(),
                        profitId -> {
                            elem.setShortStopLossOrderId(profitId);
                            GridElement.refreshIndices();
                            log.info("[Gate] 空仓止损已挂, gridId:{}, 触发价:{}, stopLossId:{}", finalId, triggerPrice, profitId);
                        }
                );
            }


            int longTime = Integer.parseInt(config.getBaseQuantity()) + 1;
            for (int id = -2; id >= -longTime; id--) {
                GridElement elem = GridElement.findById(id);
                if (elem == null) {
                    continue;
                }
                BigDecimal triggerPrice = elem.getGridPrice();
                int finalId = id;
                executor.placeTakeProfit(
                        triggerPrice,
                        FuturesPriceTrigger.RuleEnum.NUMBER_2,
                        ORDER_TYPE_CLOSE_LONG,
                        negate(config.getQuantity()),
                        profitId -> {
                            elem.setLongStopLossOrderId(profitId);
                            GridElement.refreshIndices();
                            log.info("[Gate] 多仓止损已挂, gridId:{}, 触发价:{}, stopLossId:{}", finalId, triggerPrice, profitId);
                        }
                );
            }

            log.info("[Gate] 止损单已全部挂完, 空仓止损: 2~{}, 多仓止损: -2~-{}", shortTime, longTime);
            state = StrategyState.ACTIVE;
        }
    }

    /**
     * 更新基座止盈信息，将止盈价、订单ID等写入 TraderParam 并回填到 ID=0 的网格元素中。
     */
    private void longTakeProfitTraderIdParam(
            GridElement baseElement,String profitId, boolean flag
    ) {
        TraderParam tp = baseElement.getLongTraderParam();
        tp.setTakeProfitOrderId(profitId);
        tp.setTakeProfitPlaced(flag);
        baseElement.setLongTakeProfitOrderId(profitId);
        GridElement.refreshIndices();
    }
    private void shortTakeProfitTraderIdParam(
            GridElement baseElement,String profitId, boolean flag
    ) {
        TraderParam tp = baseElement.getShortTraderParam();
        tp.setTakeProfitOrderId(profitId);
        tp.setTakeProfitPlaced(flag);
        baseElement.setShortTakeProfitOrderId(profitId);
        GridElement.refreshIndices();
    }

    private void longEntryTraderIdParam(
            GridElement baseElement,String entryId,boolean flag
    ) {
        TraderParam tp = baseElement.getLongTraderParam();
        tp.setEntryOrderId(entryId);
        tp.setEntryOrderPlaced(flag);
        baseElement.setHasLongOrder(flag);
        baseElement.setLongOrderId(entryId);
        GridElement.refreshIndices();
    }

    private void shortEntryTraderIdParam(
            GridElement baseElement, String entryId, boolean flag
    ) {
        TraderParam tp = baseElement.getShortTraderParam();
        tp.setEntryOrderId(entryId);
        tp.setEntryOrderPlaced(flag);
        baseElement.setHasShortOrder(flag);
        baseElement.setShortOrderId(entryId);
        GridElement.refreshIndices();
    }

    /**
     * 生成空仓价格队列。
     * 以 shortBaseEntryPrice × gridRate 作为绝对步长 step，存到 config。
     * 第1个元素 = shortBaseEntryPrice − step，后续依次递减 step，共 gridQueueSize 个。
     * 队列降序排列（大→小），方便 processShortGrid 中从头遍历。
     */
    private void generateShortQueue() {
        shortPriceQueue.clear();
        int prec = config.getPriceScale();
        BigDecimal step = shortBaseEntryPrice.multiply(config.getGridRate()).setScale(prec, RoundingMode.HALF_UP);
        config.setStep(step);
        BigDecimal elem = shortBaseEntryPrice.subtract(step).setScale(prec, RoundingMode.HALF_UP);
            for (int i = 0; i < config.getGridQueueSize(); i++) {
                shortPriceQueue.add(elem);
                elem = elem.subtract(step).setScale(prec, RoundingMode.HALF_UP);
                if (elem.compareTo(BigDecimal.ZERO) <= 0) {
                    break;
                }
            }
        shortPriceQueue.sort((a, b) -> b.compareTo(a));
        log.info("[Gate] 空队列:{}", shortPriceQueue);
    }

    /**
     * 生成多仓价格队列。
     * 以 shortBaseEntryPrice + step 为首元素，后续依次递增 step，共 gridQueueSize 个。
     * 队列升序排列（小→大），方便 processLongGrid 中从头遍历。
     */
    private void generateLongQueue() {
        longPriceQueue.clear();
        int prec = config.getPriceScale();
        BigDecimal step = config.getStep();
        BigDecimal elem = shortBaseEntryPrice.add(step).setScale(prec, RoundingMode.HALF_UP);
        for (int i = 0; i < config.getGridQueueSize(); i++) {
            longPriceQueue.add(elem);
            elem = elem.add(step).setScale(prec, RoundingMode.HALF_UP);
        }
        longPriceQueue.sort(BigDecimal::compareTo);
        log.info("[Gate] 多队列:{}", longPriceQueue);
    }

    /**
     * 根据当前多空价格队列同步构建网格元素列表，写入 config。
     *
     * <h3>ID 分配规则</h3>
     * <ul>
     *   <li>空仓队列：id 从 -1 自减（-1, -2, -3...），第一个元素 upId=0，最后一个 downId=null</li>
     *   <li>位置 0：gridPrice=shortBaseEntryPrice，upId=-1，downId=1，其数据在基座开仓时更新</li>
     *   <li>多仓队列：id 从 1 自增（1, 2, 3...），第一个元素 upId=0，最后一个 downId=null</li>
     * </ul>
     *
     * <h3>链表关系</h3>
     * 所有元素通过 upId/downId 串成一条双向链表：
     * ... → -3 → -2 → -1 → 0 → 1 → 2 → 3 → ...
     */
    private void updateGridElements() {
        List<GridElement> elements = new ArrayList<>();
        int shortSize = shortPriceQueue.size();
        int longSize = longPriceQueue.size();
        //根据精度转换成小数
        int prec = config.getPriceScale();
//        BigDecimal minTick = BigDecimal.ONE.scaleByPowerOfTen(-prec);
//        BigDecimal step = config.getStep().subtract(minTick);
        BigDecimal step = config.getStep();
        String qty = config.getQuantity();

        // 空仓队列：id 从 -1 自减, shortPriceQueue[i] → id=-(i+1)
        for (int i = 0; i < shortSize; i++) {
            int id = -(i + 1);
            Integer upId = (i == 0) ? 0 : id + 1;
            Integer downId = (i == shortSize - 1) ? null : id - 1;
            BigDecimal price = shortPriceQueue.get(i);
            TraderParam longParam = TraderParam.builder()
                    .direction(TraderParam.Direction.LONG)
                    .entryPrice(price)
                    .takeProfitPrice(price.add(step).setScale(prec, RoundingMode.HALF_UP))
                    .quantity(qty)
                    .build();
            TraderParam shortParam = TraderParam.builder()
                    .direction(TraderParam.Direction.SHORT)
                    .entryPrice(price)
                    .takeProfitPrice(price.subtract(step).setScale(prec, RoundingMode.HALF_UP))
                    .quantity(qty)
                    .build();
            elements.add(GridElement.builder()
                    .id(id)
                    .gridPrice(price)
                    .upId(upId)
                    .downId(downId)
                    .longTraderParam(longParam)
                    .shortTraderParam(shortParam)
                    .build());
        }

        // 位置 0：基底价格，数据在基座开仓时更新
        {
            BigDecimal price = shortBaseEntryPrice;
            TraderParam longParam = TraderParam.builder()
                    .direction(TraderParam.Direction.LONG)
                    .entryPrice(price)
                    .takeProfitPrice(price.add(step).setScale(prec, RoundingMode.HALF_UP))
                    .quantity(qty)
                    .build();
            TraderParam shortParam = TraderParam.builder()
                    .direction(TraderParam.Direction.SHORT)
                    .entryPrice(price)
                    .takeProfitPrice(price.subtract(step).setScale(prec, RoundingMode.HALF_UP))
                    .quantity(qty)
                    .build();
            elements.add(GridElement.builder()
                    .id(0)
                    .gridPrice(price)
                    .upId(shortSize > 0 ? 1 : null)
                    .downId(longSize > 0 ? -1 : null)
                    .longTraderParam(longParam)
                    .shortTraderParam(shortParam)
                    .build());
        }

        // 多仓队列：id 从 1 自增, longPriceQueue[i] → id=i+1
        for (int i = 0; i < longSize; i++) {
            int id = i + 1;
            Integer downId = (i == 0) ? 0 : id - 1;
            Integer upId = (i == longSize - 1) ? null : id + 1;
            BigDecimal price = longPriceQueue.get(i);
            TraderParam longParam = TraderParam.builder()
                    .direction(TraderParam.Direction.LONG)
                    .entryPrice(price)
                    .takeProfitPrice(price.add(step).setScale(prec, RoundingMode.HALF_UP))
                    .quantity(qty)
                    .build();
            TraderParam shortParam = TraderParam.builder()
                    .direction(TraderParam.Direction.SHORT)
                    .entryPrice(price)
                    .takeProfitPrice(price.subtract(step).setScale(prec, RoundingMode.HALF_UP))
                    .quantity(qty)
                    .build();
            elements.add(GridElement.builder()
                    .id(id)
                    .gridPrice(price)
                    .upId(upId)
                    .downId(downId)
                    .longTraderParam(longParam)
                    .shortTraderParam(shortParam)
                    .build());
        }

        config.setGridElements(elements);
        log.info("[Gate] 网格元素列表已构建, 共{}个元素 (空仓:{} 位置:0 多仓:{})", elements.size(), shortSize, longSize);
    }

    private void processShortGrid(BigDecimal currentPrice) {
        BigDecimal matched = BigDecimal.ZERO;
        synchronized (shortPriceQueue) {
            for (BigDecimal p : shortPriceQueue) {
                if (p.compareTo(currentPrice) >= 0) {
                    matched =  p;
                } else {
                    break;
                }
            }
        }
        if (BigDecimal.ZERO.compareTo( matched) == 0) {
            return;
        }
        log.info("[Gate] 多仓仓位归零 空仓队列触发, 匹配：{}，当前价：{}", matched, currentPrice);

        GridElement matchedUpGridElement = GridElement.findByPrice(matched);

        Integer upId = matchedUpGridElement.getUpId();
        GridElement newEntryGrid = GridElement.findById(upId);

        if (newEntryGrid != null) {
            GridElement cancelGridElement = GridElement.findById(newEntryGrid.getUpId());

            if (cancelGridElement != null) {
                BigDecimal triggerPrice = newEntryGrid.getGridPrice();
                String size = cancelGridElement.getLongTraderParam().getQuantity();
                log.info("[Gate] 多仓仓位归零 gridId:{}, 挂{}基础张多单",
                        newEntryGrid.getId(),  size);
                newEntryGrid.getLongTraderParam().setQuantity(size);
                placeEntryOrderWithPreFlag(newEntryGrid, true, triggerPrice,
                        FuturesPriceTrigger.RuleEnum.NUMBER_1, size);

                longEntryActive = false;

                /**
                 * 看是否有多仓挂单，有就取消
                 */
                if (cancelGridElement != null && cancelGridElement.isHasLongOrder()) {
                    executor.cancelConditionalOrder(cancelGridElement.getLongOrderId(), oid -> {
                        longEntryTraderIdParam(cancelGridElement, null, false);
                        log.info("[Gate] 多仓仓位归零, 取消gridId:{}的多单", cancelGridElement);
                    });
                }
            }
        }
    }

    private void processLongGrid(BigDecimal currentPrice) {
        BigDecimal matched = BigDecimal.ZERO;
        synchronized (longPriceQueue) {
            for (BigDecimal p : longPriceQueue) {
                if (p.compareTo(currentPrice) <= 0) {
                    matched = p;
                } else {
                    break;
                }
            }
        }
        if (BigDecimal.ZERO.compareTo( matched) == 0) {
            return;
        }

        log.info("[Gate] 空仓仓位归零 多仓队列触发, 匹配：{}，当前价：{}", matched, currentPrice);

        GridElement matchedUpGridElement = GridElement.findByPrice(matched);

        Integer downId = matchedUpGridElement.getDownId();
        GridElement newEntryGrid = GridElement.findById(downId);

        if (newEntryGrid != null) {
            GridElement cancelGridElement = GridElement.findById(newEntryGrid.getDownId());

            if (cancelGridElement != null) {
                BigDecimal triggerPrice = newEntryGrid.getGridPrice();
                String size = cancelGridElement.getShortTraderParam().getQuantity();
                log.info("[Gate] 空仓仓位归零 gridId:{}, 挂{}基础张多单",
                        newEntryGrid.getId(),  size);
                newEntryGrid.getShortTraderParam().setQuantity(size);
                placeEntryOrderWithPreFlag(newEntryGrid, false, triggerPrice,
                        FuturesPriceTrigger.RuleEnum.NUMBER_2, negate(size));

                shortEntryActive = false;

                /**
                 * 看是否有空仓挂单，有就取消
                 */
                if (cancelGridElement != null && cancelGridElement.isHasShortOrder()) {
                    executor.cancelConditionalOrder(cancelGridElement.getShortOrderId(), oid -> {
                        shortEntryTraderIdParam(cancelGridElement, null, false);
                        log.info("[Gate] 空仓仓位归零, 取消gridId:{}的多单", cancelGridElement);
                    });
                }
            }

        }
    }

    private void handleLongStopLossTriggered(GridElement gridElement) {
        int gridId = gridElement.getId();
        int N = Math.abs(gridId);
        gridElement.setLongStopLossOrderId(null);
        log.info("[Gate] 多仓止损触发 gridId:{}, 开始追单", gridId);

        int newEntryGridId = -(N - 1);

        GridElement newEntryGrid = GridElement.findById(newEntryGridId);
        if (newEntryGrid == null) {
            log.warn("[Gate] 多仓止损触发 but gridId:{} 不存在", newEntryGridId);
            GridElement.refreshIndices();
            return;
        }

        if (N > 2) {
            int cancelGridId = -(N - 2);
            GridElement cancelGrid = GridElement.findById(cancelGridId);
            if (cancelGrid != null && cancelGrid.isHasLongOrder()) {
                executor.cancelConditionalOrder(cancelGrid.getLongOrderId(), oid -> {
                    longEntryTraderIdParam(cancelGrid, null, false);
                    log.info("[Gate] 多仓止损触发, 取消gridId:{}的多单", cancelGridId);
                });
            }
        }

        BigDecimal triggerPrice = newEntryGrid.getGridPrice();
        longEntryQty++;
        int entryQty = longEntryQty;

        // 最大持仓限制：已持仓+本次挂单 ≤ maxPositionSize
        int maxPos = config.getMaxPositionSize();
        if (maxPos > 0) {
            int currentPos = longPositionSize.intValue();
            int maxAllowed = maxPos - currentPos;
            if (maxAllowed <= 0) {
                log.warn("[Gate] 多仓止损触发 gridId:{}, 已达最大持仓{}，跳过挂单", gridId, maxPos);
                longEntryQty = 1;
                return;
            }
            if (entryQty > maxAllowed) {
                log.info("[Gate] 多仓止损触发 gridId:{}, 挂单{}张超限, 截断为{}张", gridId, entryQty, maxAllowed);
                entryQty = maxAllowed;
                longEntryQty = 1;
            }
        }

        String size = new BigDecimal(String.valueOf(entryQty)).multiply(new BigDecimal(config.getQuantity())).toString();
        log.info("[Gate] 多仓止损触发 gridId:{}, 在gridId:{}挂{}基础张多单(计数器:{}, size:{})",
                gridId, newEntryGridId, entryQty, longEntryQty, size);
        newEntryGrid.getLongTraderParam().setQuantity(size);
        placeEntryOrderWithPreFlag(newEntryGrid, true, triggerPrice,
                FuturesPriceTrigger.RuleEnum.NUMBER_1, size);
    }

    private void handleShortStopLossTriggered(GridElement gridElement) {
        int gridId = gridElement.getId();
        int N = gridId;
        gridElement.setShortStopLossOrderId(null);
        log.info("[Gate] 空仓止损触发 gridId:{}, 开始追单", gridId);

        int newEntryGridId = N - 1;

        GridElement newEntryGrid = GridElement.findById(newEntryGridId);
        if (newEntryGrid == null) {
            log.warn("[Gate] 空仓止损触发 but gridId:{} 不存在", newEntryGridId);
            GridElement.refreshIndices();
            return;
        }

        if (N > 2) {
            int cancelGridId = N - 2;
            GridElement cancelGrid = GridElement.findById(cancelGridId);
            if (cancelGrid != null && cancelGrid.isHasShortOrder()) {
                executor.cancelConditionalOrder(cancelGrid.getShortOrderId(), oid -> {
                    shortEntryTraderIdParam(cancelGrid, null, false);
                    log.info("[Gate] 空仓止损触发, 取消gridId:{}的空单", cancelGridId);
                });
            }
        }



        BigDecimal triggerPrice = newEntryGrid.getGridPrice();
        shortEntryQty++;
        int entryQty = shortEntryQty;

        // 最大持仓限制：已持仓+本次挂单 ≤ maxPositionSize
        int maxPos = config.getMaxPositionSize();
        if (maxPos > 0) {
            int currentPos = shortPositionSize.intValue();
            int maxAllowed = maxPos - currentPos;
            if (maxAllowed <= 0) {
                log.warn("[Gate] 空仓止损触发 gridId:{}, 已达最大持仓{}，跳过挂单", gridId, maxPos);
                shortEntryQty = 1;
                return;
            }
            if (entryQty > maxAllowed) {
                log.info("[Gate] 空仓止损触发 gridId:{}, 挂单{}张超限, 截断为{}张", gridId, entryQty, maxAllowed);
                entryQty = maxAllowed;
                shortEntryQty = 1;
            }
        }

        String size = new BigDecimal(String.valueOf(entryQty)).multiply(new BigDecimal(config.getQuantity())).toString();
        log.info("[Gate] 空仓止损触发 gridId:{}, 在gridId:{}挂{}基础张空单(计数器:{}, size:{})",
                gridId, newEntryGridId, entryQty, shortEntryQty, size);
        newEntryGrid.getShortTraderParam().setQuantity(size);
        placeEntryOrderWithPreFlag(newEntryGrid, false, triggerPrice,
                FuturesPriceTrigger.RuleEnum.NUMBER_2, negate(size));
    }

    private void extendLongStopLoss(int filledQty) {
        int furthestSlId = 0;
        for (GridElement e : config.getGridElements()) {
            if (e.getLongStopLossOrderId() != null && e.getId() < furthestSlId) {
                furthestSlId = e.getId();
            }
        }
        if (furthestSlId == 0) {
            furthestSlId = -11;
        }
        log.info("[Gate] 多仓追挂止损, 当前最远止损gridId:{}, 追加{}张", furthestSlId, filledQty);
        for (int i = 0; i < filledQty; i++) {
            int newSlId = furthestSlId - i - 1;
            GridElement elem = GridElement.findById(newSlId);
            if (elem == null) {
                continue;
            }
            BigDecimal triggerPrice = elem.getGridPrice();
            int finalSlId = newSlId;
            executor.placeTakeProfit(
                    triggerPrice,
                    FuturesPriceTrigger.RuleEnum.NUMBER_2,
                    ORDER_TYPE_CLOSE_LONG,
                    negate(config.getQuantity()),
                    profitId -> {
                        elem.setLongStopLossOrderId(profitId);
                        GridElement.refreshIndices();
                        log.info("[Gate] 多仓止损追加, gridId:{}, 触发价:{}, stopLossId:{}", finalSlId, triggerPrice, profitId);
                    }
            );
        }
    }

    private void extendShortStopLoss(int filledQty) {
        int furthestSlId = 0;
        for (GridElement e : config.getGridElements()) {
            if (e.getShortStopLossOrderId() != null && e.getId() > furthestSlId) {
                furthestSlId = e.getId();
            }
        }
        if (furthestSlId == 0) {
            furthestSlId = 11;
        }
        log.info("[Gate] 空仓追挂止损, 当前最远止损gridId:{}, 追加{}张", furthestSlId, filledQty);
        for (int i = 0; i < filledQty; i++) {
            int newSlId = furthestSlId + i + 1;
            GridElement elem = GridElement.findById(newSlId);
            if (elem == null) {
                continue;
            }
            BigDecimal triggerPrice = elem.getGridPrice();
            int finalSlId = newSlId;
            executor.placeTakeProfit(
                    triggerPrice,
                    FuturesPriceTrigger.RuleEnum.NUMBER_1,
                    ORDER_TYPE_CLOSE_SHORT,
                    config.getQuantity(),
                    profitId -> {
                        elem.setShortStopLossOrderId(profitId);
                        GridElement.refreshIndices();
                        log.info("[Gate] 空仓止损追加, gridId:{}, 触发价:{}, stopLossId:{}", finalSlId, triggerPrice, profitId);
                    }
            );
        }
    }

    /**
     * 通过 REST API 查询实时持仓，超限则在下一网格挂止盈单。
     * 使用异步执行避免阻塞 WS 回调线程。
     *
     * @param isLong 是否为多仓方向
     * @param gridId 当前挂单成交的网格 ID
     */
    private void checkMaxPositionAndPlaceTakeProfit(boolean isLong, int gridId) {
        int maxPos = config.getMaxPositionSize();
        if (maxPos <= 0) return;

        executor.submitTask(() -> {
            try {
                List<Position> positions = futuresApi.listPositions(SETTLE).execute();
                if (positions == null) return;

                long actualPosSize = 0;
                String targetMode = isLong ? "dual_long" : "dual_short";
                for (Position pos : positions) {
                    if (!config.getContract().equals(pos.getContract())) continue;
                    Position.ModeEnum mode = pos.getMode();
                    if (mode != null && mode.getValue() != null && targetMode.equals(mode.getValue())) {
                        actualPosSize = Math.abs(Long.parseLong(pos.getSize()));
                        break;
                    }
                }

                if (actualPosSize <= maxPos) {
                    log.debug("[Gate] 持仓检查 {}方向 实际持仓:{} ≤ 上限:{}, 无需止盈", targetMode, actualPosSize, maxPos);
                    return;
                }

                // 下一网格 ID：空仓 N→N-1（向基底方向，更低价），多仓 -N→-(N-1)（向基底方向，更高价）
                int nextGridId = isLong ? -(Math.abs(gridId) - 1) : gridId - 1;
                GridElement nextGrid = GridElement.findById(nextGridId);
                if (nextGrid == null) {
                    log.warn("[Gate] 持仓超限 but 下一网格{}不存在", nextGridId);
                    return;
                }

                BigDecimal tpPrice = nextGrid.getGridPrice();
                final long finalPosSize = actualPosSize;
                final int finalNextGridId = nextGridId;
                if (isLong) {
                    executor.placeTakeProfit(tpPrice,
                            FuturesPriceTrigger.RuleEnum.NUMBER_1,
                            ORDER_TYPE_CLOSE_LONG,
                            negate(config.getQuantity()),
                            profitId -> log.info("[Gate] 多仓超限止盈已挂(持仓:{})>, gridId:{}, tpPrice:{}, id:{}",
                                    finalPosSize, finalNextGridId, tpPrice, profitId));
                } else {
                    executor.placeTakeProfit(tpPrice,
                            FuturesPriceTrigger.RuleEnum.NUMBER_2,
                            ORDER_TYPE_CLOSE_SHORT,
                            config.getQuantity(),
                            profitId -> log.info("[Gate] 空仓超限止盈已挂(持仓:{})>, gridId:{}, tpPrice:{}, id:{}",
                                    finalPosSize, finalNextGridId, tpPrice, profitId));
                }
            } catch (Exception e) {
                log.warn("[Gate] 通过API查询持仓超限检查失败", e);
            }
        });
    }

    /** Gate 永续合约 taker 费率 0.05% */
    private static final BigDecimal TAKER_FEE_RATE = new BigDecimal("0.0005");
    /** ETH_USDT 合约面值（每张=0.01 ETH） */
    private static final BigDecimal CT_VAL = new BigDecimal("0.01");

    private void checkProfitAndReset() {
        try {
            FuturesAccount account = futuresApi.listFuturesAccounts(SETTLE);
            BigDecimal unrealisedPnl = new BigDecimal(account.getCrossUnrealisedPnl());
            BigDecimal available = new BigDecimal(account.getCrossAvailable());
            BigDecimal totalEquity = unrealisedPnl.add(available);

            // 估算平仓手续费：(多仓张数+空仓张数) × 合约面值 × 当前价 × taker费率
            BigDecimal totalSize = longPositionSize.abs().add(shortPositionSize.abs());
            BigDecimal closeContractValue =
                    totalSize.multiply(CT_VAL).multiply(lastKlinePrice != null ? lastKlinePrice : BigDecimal.ZERO);
            BigDecimal estimatedFee = closeContractValue.multiply(TAKER_FEE_RATE);
            BigDecimal netEquity = totalEquity.subtract(estimatedFee);

            BigDecimal target = initialPrincipal.add(config.getExpectedProfit());
            log.info("[Gate] 盈亏检查,总张数：{}, upl:{}, avail:{}, 合计:{}, 估手续费:{}, 净权益:{}, 目标:{}",
                    totalSize,unrealisedPnl, available, totalEquity, estimatedFee, netEquity, target);
            if (netEquity.compareTo(target) > 0) {
                log.info("[Gate] 盈亏达标(净权益{}>目标{})，重置策略", netEquity, target);
                state = StrategyState.STOPPED;
                closeExistingPositions();
                futuresApi.cancelPriceTriggeredOrderList(SETTLE, config.getContract());

                // 提交到 executor 末尾：单线程FIFO保证前面所有平仓/取消任务完成后才重置
                executor.submitTask(() -> {
                    try { Thread.sleep(3000); } catch (InterruptedException e) { Thread.currentThread().interrupt(); }
                    startGrid();
                });
            }
        } catch (Exception e) {
            log.warn("[Gate] 盈亏检查失败", e);
        }
    }

    private void handlePositionZeroAndReset(String direction) {
        state = StrategyState.STOPPED;
        try {
            futuresApi.cancelPriceTriggeredOrderList(SETTLE, config.getContract());
        } catch (Exception e) {
            log.warn("[Gate] {}持仓归零后取消条件单失败", direction, e);
        }
        closeExistingPositions();
        // 提交到 executor 末尾：单线程FIFO保证前面所有平仓/取消任务完成后才重置
        executor.submitTask(() -> {
            try { Thread.sleep(3000); } catch (InterruptedException e) { Thread.currentThread().interrupt(); }
            startGrid();
        });
    }

    // ---- 保证金安全阀 ----

    /**
     * 保证金安全阀检查。
     *
     * <p>实时查询当前保证金占用额（positionInitialMargin），计算其占初始本金的比例。
     * 比例 ≥ marginRatioLimit（默认 20%）时拒绝开仓，但仍照常更新队列。
     *
     * <p>查询失败时默认放行（返回 true），避免因 REST API 异常导致策略完全停滞。
     *
     * @return true=安全可开仓 / false=保证金超限跳过开仓
     */
    private boolean isMarginSafe() {
        try {
            FuturesAccount account = futuresApi.listFuturesAccounts(SETTLE);
            BigDecimal margin = new BigDecimal(account.getPositionInitialMargin());
            BigDecimal ratio = margin.divide(initialPrincipal, 4, RoundingMode.HALF_UP);
            log.debug("[Gate] 保证金比例: {}/{}={}", margin, initialPrincipal, ratio);
            return ratio.compareTo(config.getMarginRatioLimit()) < 0;
        } catch (Exception e) {
            log.warn("[Gate] 查保证金失败，默认放行", e);
            return true;
        }
    }

    // ---- 工具 ----

    /**
     * 取反字符串数字。如 "1" → "-1"，"-2" → "2"。
     * 用于开空单时将正数张数转为负数。
     */
    private String negate(String qty) {
        return qty.startsWith("-") ? qty.substring(1) : "-" + qty;
    }

    /**
     * 预设标志位后提交条件开仓单，防止异步回调导致的竞态重复挂单。
     *
     * <p>在调用 {@link GateTradeExecutor#placeConditionalEntryOrder} 之前同步设置
     * {@code isHasLongOrder / isHasShortOrder}，关闭 WS 线程与 Executor 线程之间的
     * 检查-下单时间窗口。API 失败时自动回滚标志位。
     *
     * @param gridElement 目标网格元素
     * @param isLong      true=多仓下单，false=空仓下单
     * @param triggerPrice 触发价
     * @param rule        触发规则
     * @param size        开仓张数
     */
    private void placeEntryOrderWithPreFlag(GridElement gridElement, boolean isLong,
                                             BigDecimal triggerPrice,
                                             FuturesPriceTrigger.RuleEnum rule,
                                             String size) {
        if (isLong) {
            gridElement.setHasLongOrder(true);
        } else {
            gridElement.setHasShortOrder(true);
        }
        executor.placeConditionalEntryOrder(triggerPrice, rule, size,
                orderId -> {
                    if (isLong) {
                        longEntryTraderIdParam(gridElement, orderId, true);
                    } else {
                        shortEntryTraderIdParam(gridElement, orderId, true);
                    }
                },
                () -> {
                    if (isLong) {
                        gridElement.setHasLongOrder(false);
                        gridElement.setLongOrderId(null);
                    } else {
                        gridElement.setHasShortOrder(false);
                        gridElement.setShortOrderId(null);
                    }
                    GridElement.refreshIndices();
                    log.warn("[Gate] 条件单创建失败，回滚标志位 gridId:{}, isLong:{}", gridElement.getId(), isLong);
                }
        );
    }

    /**
     * 根据持仓和当前价格计算未实现盈亏。
     *
     * <h3>正向合约公式</h3>
     * <pre>
     *   多仓: 持仓量 × 合约乘数 × (计价价格 − 开仓均价)
     *   空仓: 持仓量 × 合约乘数 × (开仓均价 − 计价价格)
     * </pre>
     * 计价价格由 {@link GateConfig.PnLPriceMode} 决定：LAST_PRICE 用最新成交价，MARK_PRICE 用标记价格。
     */
    private void updateUnrealizedPnl() {
        BigDecimal price = resolvePnlPrice();
        if (price == null || price.compareTo(BigDecimal.ZERO) == 0) {
            return;
        }
        BigDecimal multiplier = config.getContractMultiplier();
        BigDecimal longPnl = BigDecimal.ZERO;
        BigDecimal shortPnl = BigDecimal.ZERO;
        if (longPositionSize.compareTo(BigDecimal.ZERO) > 0 && longEntryPrice.compareTo(BigDecimal.ZERO) > 0) {
            longPnl = longPositionSize.multiply(multiplier).multiply(price.subtract(longEntryPrice));
        }
        if (shortPositionSize.compareTo(BigDecimal.ZERO) > 0 && shortEntryPrice.compareTo(BigDecimal.ZERO) > 0) {
            shortPnl = shortPositionSize.multiply(multiplier).multiply(shortEntryPrice.subtract(price));
        }
        unrealizedPnl = longPnl.add(shortPnl);

        log.info("[Gate] 未实现盈亏: {}", unrealizedPnl);
    }

    /**
     * 根据配置的 PnLPriceMode 返回计价价格。
     * MARK_PRICE 模式优先使用标记价格（外部注入），未注入时回退到最新成交价。
     *
     * @return 计价价格，可能为 null
     */
    private BigDecimal resolvePnlPrice() {
        if (config.getUnrealizedPnlPriceMode() == GateConfig.PnLPriceMode.MARK_PRICE
                && markPrice.compareTo(BigDecimal.ZERO) > 0) {
            return markPrice;
        }
        return lastKlinePrice;
    }

    /** @return 最新 K 线价格（每次 onKline 更新） */
    public BigDecimal getLastKlinePrice() { return lastKlinePrice; }
    /** 设置标记价格（外部注入，MARK_PRICE 模式时用于盈亏计算） */
    public void setMarkPrice(BigDecimal markPrice) { this.markPrice = markPrice; }
    /** @return 策略是否处于活跃状态（非 STOPPED 且非 WAITING_KLINE） */
    public boolean isStrategyActive() { return state != StrategyState.STOPPED && state != StrategyState.WAITING_KLINE; }
    /** @return 累计已实现盈亏（平仓推送驱动累加） */
    public BigDecimal getCumulativePnl() { return cumulativePnl; }
    /** @return 当前未实现盈亏（每根 K 线实时计算） */
    public BigDecimal getUnrealizedPnl() { return unrealizedPnl; }
    /** @return Gate 用户 ID（用于私有频道订阅 payload） */
    public Long getUserId() { return userId; }
    /** @return 当前策略状态 */
    public StrategyState getState() { return state; }
    /** 注入WS客户端，用于订阅状态检查 */
    public void setWsClient(GateKlineWebSocketClient wsClient) { this.wsClient = wsClient; }
}