package com.xcong.excoin.modules.gateApi.simulation;

import java.math.BigDecimal;
import java.math.RoundingMode;
import java.util.*;

/**
 * 网格策略模拟器 — 模拟 GateGridTradeService 完整生命周期并发现逻辑 BUG。
 *
 * <h3>预设参数</h3>
 * shortBaseEntryPrice = 100.0, gridRate = 0.005 (0.5%), step = 0.5, priceScale = 1, baseQuantity = 10, quantity = 1
 */
public class GridSimulator {

    static int SIM_PRICE_PREC = 1;
    static BigDecimal BASE_PRICE = new BigDecimal("100.0");
    static BigDecimal STEP = BASE_PRICE.multiply(new BigDecimal("0.005")).setScale(SIM_PRICE_PREC, RoundingMode.HALF_UP); // 0.5
    static int BASE_QTY = 10;
    static int QTY = 1;
    static int GRID_QUEUE_SIZE = 10; // 模拟用缩减队列

    // ---- 网格数据结构 ----
    static class Grid {
        int id;
        BigDecimal price;
        boolean hasLongOrder, hasShortOrder;
        String longOrderId, shortOrderId;
        String longTpOrderId, shortTpOrderId;   // 止盈
        String longSlOrderId, shortSlOrderId;   // 止损
        BigDecimal longTpPrice, shortTpPrice;
        int longFilledQty = QTY, shortFilledQty = QTY;

        Grid(int id, BigDecimal price) {
            this.id = id; this.price = price;
            this.longTpPrice = price.add(STEP).setScale(SIM_PRICE_PREC, RoundingMode.HALF_UP);
            this.shortTpPrice = price.subtract(STEP).setScale(SIM_PRICE_PREC, RoundingMode.HALF_UP);
        }
        @Override public String toString() {
            return String.format("G[%2d] p=%.1f | L:o=%s tp=%s sl=%s | S:o=%s tp=%s sl=%s",
                id, price,
                hasLongOrder ? "Y" : "N", longTpOrderId != null ? longTpOrderId : "-", longSlOrderId != null ? longSlOrderId : "-",
                hasShortOrder ? "Y" : "N", shortTpOrderId != null ? shortTpOrderId : "-", shortSlOrderId != null ? shortSlOrderId : "-");
        }
    }

    static Map<Integer, Grid> INDEX = new LinkedHashMap<>();
    static List<Grid> gridElements = new ArrayList<>();

    // ---- 队列 ----
    static List<BigDecimal> shortQueue = new ArrayList<>(); // 降序
    static List<BigDecimal> longQueue = new ArrayList<>();  // 升序
    static List<BigDecimal> totalShortQ = new ArrayList<>(); // 降序
    static List<BigDecimal> totalLongQ = new ArrayList<>();  // 升序

    // ---- 状态 ----
    enum State { WAITING_KLINE, OPENING, ACTIVE, STOPPED }
    static State state = State.WAITING_KLINE;
    static boolean baseLongOpened = false, baseShortOpened = false;
    static boolean longActive = false, shortActive = false;
    static BigDecimal longPositionSize = BigDecimal.ZERO;
    static BigDecimal shortPositionSize = BigDecimal.ZERO;
    static BigDecimal longEntryPrice = BigDecimal.ZERO;
    static BigDecimal shortEntryPrice = BigDecimal.ZERO;
    static BigDecimal cumulativePnl = BigDecimal.ZERO;
    static BigDecimal unrealizedPnl = BigDecimal.ZERO;
    static BigDecimal shortBaseEntryPrice = BigDecimal.ZERO;
    static BigDecimal longBaseEntryPrice = BigDecimal.ZERO;

    static int orderIdCounter = 1000;
    static List<String> eventLog = new ArrayList<>();
    static List<String> bugLog = new ArrayList<>();

    static void log(String msg) { eventLog.add(msg); System.out.println("  " + msg); }
    static void bug(String msg) { String s = "  [BUG] " + msg; bugLog.add(s); System.out.println(s); }
    static String newOrderId() { return "O-" + (orderIdCounter++); }
    static String repeat(String s, int n) {
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < n; i++) sb.append(s);
        return sb.toString();
    }

    // ================================================================
    // 步骤1: 初始化
    // ================================================================
    static void init() {
        log("=== Phase 1: 初始化 ===");
        log("参数: basePrice=" + BASE_PRICE + " step=" + STEP + " baseQty=" + BASE_QTY + " qty=" + QTY);
        state = State.WAITING_KLINE;
    }

    // ================================================================
    // 步骤2: 首根K线 → 市价双开基底
    // ================================================================
    static void onFirstKline() {
        log("\n=== Phase 2: 首根K线到达，市价双开基底 ===");
        state = State.OPENING;
        log("市价开多 " + BASE_QTY + " 张，开空 " + BASE_QTY + " 张");

        // 模拟成交
        longPositionSize = new BigDecimal(BASE_QTY);
        shortPositionSize = new BigDecimal(BASE_QTY);
        longEntryPrice = BASE_PRICE;
        shortEntryPrice = BASE_PRICE;
        longActive = true;
        shortActive = true;

        // 模拟 onPositionUpdate → 基底成交
        log("基底多成交价: " + BASE_PRICE);
        longBaseEntryPrice = BASE_PRICE;
        baseLongOpened = true;
        log("基底空成交价: " + BASE_PRICE);
        shortBaseEntryPrice = BASE_PRICE;
        baseShortOpened = true;

        tryGenerateQueues();
    }

    // ================================================================
    // 步骤3: 生成队列和网格
    // ================================================================
    static void tryGenerateQueues() {
        if (!baseLongOpened || !baseShortOpened) return;
        log("\n=== Phase 3: 生成网格队列 ===");

        // 生成队列
        generateShortQueue();
        generateLongQueue();
        updateGridElements();

        // 标记基底元素 (模拟 baseLongTraderParam/baseShortTraderParam)
        Grid baseG = INDEX.get(0);
        baseG.hasLongOrder = true;
        baseG.longOrderId = "BASE-LONG-IOC";
        baseG.hasShortOrder = true;
        baseG.shortOrderId = "BASE-SHORT-IOC";
        log("基底元素 ID=0 标记 hasLongOrder=true, hasShortOrder=true");

        // 初始化止损单
        initStopLossOrders();

        state = State.ACTIVE;
        log("状态切换为 ACTIVE");
        printGridState();
    }

    static void generateShortQueue() {
        shortQueue.clear();
        BigDecimal elem = BASE_PRICE.subtract(STEP).setScale(SIM_PRICE_PREC, RoundingMode.HALF_UP);
        for (int i = 0; i < GRID_QUEUE_SIZE; i++) {
            shortQueue.add(elem);
            totalLongQ.add(elem);
            totalShortQ.add(elem);
            elem = elem.subtract(STEP).setScale(SIM_PRICE_PREC, RoundingMode.HALF_UP);
            if (elem.compareTo(BigDecimal.ZERO) <= 0) break;
        }
        shortQueue.sort((a, b) -> b.compareTo(a));
        log("空仓队列(降序): " + shortQueue);
    }

    static void generateLongQueue() {
        longQueue.clear();
        BigDecimal elem = BASE_PRICE.add(STEP).setScale(SIM_PRICE_PREC, RoundingMode.HALF_UP);
        for (int i = 0; i < GRID_QUEUE_SIZE; i++) {
            longQueue.add(elem);
            totalLongQ.add(elem);
            totalShortQ.add(elem);
            elem = elem.add(STEP).setScale(SIM_PRICE_PREC, RoundingMode.HALF_UP);
        }
        longQueue.sort(BigDecimal::compareTo);
        log("多仓队列(升序): " + longQueue);
    }

    static void updateGridElements() {
        gridElements.clear();
        INDEX.clear();
        int shortSize = shortQueue.size();
        int longSize = longQueue.size();

        // 空仓区域: id 从 -1 自减
        for (int i = 0; i < shortSize; i++) {
            int id = -(i + 1);
            BigDecimal price = shortQueue.get(i);
            Grid g = new Grid(id, price);
            g.longFilledQty = QTY;
            g.shortFilledQty = QTY;
            gridElements.add(g);
            INDEX.put(id, g);
        }

        // 位置 0
        Grid g0 = new Grid(0, BASE_PRICE);
        g0.longFilledQty = QTY;
        g0.shortFilledQty = QTY;
        gridElements.add(g0);
        INDEX.put(0, g0);

        // 多仓区域: id 从 1 自增
        for (int i = 0; i < longSize; i++) {
            int id = i + 1;
            BigDecimal price = longQueue.get(i);
            Grid g = new Grid(id, price);
            g.longFilledQty = QTY;
            g.shortFilledQty = QTY;
            gridElements.add(g);
            INDEX.put(id, g);
        }

        log("网格元素: " + gridElements.size() + " 个");
    }

    static void initStopLossOrders() {
        log("\n--- 初始化止损单 ---");
        // 空仓止损: ID 2 到 BASE_QTY+1
        int shortTime = BASE_QTY + 1;
        for (int id = 2; id <= shortTime; id++) {
            Grid g = INDEX.get(id);
            if (g == null) continue;
            String slId = newOrderId();
            g.shortSlOrderId = slId;
            log(String.format("  空仓止损 gridId:%d price:%.1f slId:%s (CLOSE_SHORT NUMBER_1)", id, g.price, slId));
        }

        // 多仓止损: ID -2 到 -(BASE_QTY+1)
        int longTime = BASE_QTY + 1;
        for (int id = -2; id >= -longTime; id--) {
            Grid g = INDEX.get(id);
            if (g == null) continue;
            String slId = newOrderId();
            g.longSlOrderId = slId;
            log(String.format("  多仓止损 gridId:%d price:%.1f slId:%s (CLOSE_LONG NUMBER_2)", id, g.price, slId));
        }
        log("止损单初始化完成");
    }

    // ================================================================
    // 步骤4: onKline ACTIVE 状态下的网格处理
    // ================================================================
    static void onKline(BigDecimal closePrice) {
        if (state != State.ACTIVE) return;

        if (!longActive && longPositionSize.compareTo(BigDecimal.ZERO) == 0) {
            processShortGrid(closePrice);
        }
        if (!shortActive && shortPositionSize.compareTo(BigDecimal.ZERO) == 0) {
            processLongGrid(closePrice);
        }
    }

    static void processShortGrid(BigDecimal currentPrice) {
        log("\n--- processShortGrid (多仓归零, 触发空仓队列) 当前价:" + currentPrice + " ---");
        BigDecimal matched = BigDecimal.ZERO;
        for (BigDecimal p : totalLongQ) {
            if (p.compareTo(currentPrice) >= 0) {
                matched = p;
                break;
            }
        }
        if (matched.compareTo(BigDecimal.ZERO) == 0) {
            log("  未匹配到价格");
            return;
        }
        log("  匹配价格: " + matched);
        Grid matchedG = findByPrice(matched);
        if (matchedG == null) { log("  Grid不存在"); return; }

        if (!matchedG.hasLongOrder) {
            // 在 upId 位置挂多单
            int upId = matchedG.id + 1; // upId逻辑简化
            Grid newEntryG = INDEX.get(upId);
            if (newEntryG != null && !newEntryG.hasLongOrder) {
                String oid = newOrderId();
                newEntryG.hasLongOrder = true;
                newEntryG.longOrderId = oid;
                newEntryG.longFilledQty = BASE_QTY;
                log(String.format("  在gridId:%d挂多单(size=%d) orderId:%s", upId, BASE_QTY, oid));
            }

            // 取消upId+1位置的多单
            int cancelId = upId + 1;
            Grid cancelG = INDEX.get(cancelId);
            if (cancelG != null && cancelG.hasLongOrder) {
                log(String.format("  取消gridId:%d的多单 orderId:%s", cancelId, cancelG.longOrderId));
                cancelG.hasLongOrder = false;
                cancelG.longOrderId = null;
            }

            // BUG: 这里新挂的单 size = BASE_QTY，但如果之前已有其他追单
            // 可能导致持仓远超预期
        }
    }

    static void processLongGrid(BigDecimal currentPrice) {
        log("\n--- processLongGrid (空仓归零, 触发多仓队列) 当前价:" + currentPrice + " ---");
        BigDecimal matched = BigDecimal.ZERO;
        for (BigDecimal p : totalShortQ) {
            if (p.compareTo(currentPrice) <= 0) {
                matched = p;
                break;
            }
        }
        if (matched.compareTo(BigDecimal.ZERO) == 0) {
            log("  未匹配到价格");
            return;
        }
        log("  匹配价格: " + matched);
        Grid matchedG = findByPrice(matched);
        if (matchedG == null) { log("  Grid不存在"); return; }

        if (!matchedG.hasShortOrder) {
            int downId = matchedG.id - 1;
            Grid newEntryG = INDEX.get(downId);
            if (newEntryG != null && !newEntryG.hasShortOrder) {
                String oid = newOrderId();
                newEntryG.hasShortOrder = true;
                newEntryG.shortOrderId = oid;
                newEntryG.shortFilledQty = BASE_QTY;
                log(String.format("  在gridId:%d挂空单(size=%d) orderId:%s", downId, BASE_QTY, oid));
            }

            int cancelId = downId - 1;
            Grid cancelG = INDEX.get(cancelId);
            if (cancelG != null && cancelG.hasShortOrder) {
                log(String.format("  取消gridId:%d的空单 orderId:%s", cancelId, cancelG.shortOrderId));
                cancelG.hasShortOrder = false;
                cancelG.shortOrderId = null;
            }
        }
    }

    // ================================================================
    // 步骤5: onAutoOrder 条件单成交回调
    // ================================================================
    static void onAutoOrder(String orderId, String status, String orderType, String tradeId) {
        if (state == State.STOPPED) return;
        if (!"finished".equals(status)) return;

        log("\n--- onAutoOrder: id=" + orderId + " type=" + orderType + " tradeId=" + tradeId + " ---");

        // 1. 检查是否是止损单成交
        Grid longSl = findByLongSlOrderId(orderId);
        if (longSl != null && tradeId != null && !"0".equals(tradeId)) {
            handleLongStopLossTriggered(longSl);
            return;
        }
        Grid shortSl = findByShortSlOrderId(orderId);
        if (shortSl != null && tradeId != null && !"0".equals(tradeId)) {
            handleShortStopLossTriggered(shortSl);
            return;
        }

        // 2. 检查是否是空仓挂单成交
        Grid shortG = findByShortOrderId(orderId);
        if (shortG != null && shortG.hasShortOrder && tradeId != null && !"0".equals(tradeId)) {
            int filledQty = shortG.shortFilledQty;
            shortG.hasShortOrder = false;
            shortG.shortOrderId = null;
            extendShortStopLoss(filledQty);
            log(String.format("  空单成交 gridId:%d filledQty:%d", shortG.id, filledQty));

            // 新逻辑: 持仓超过baseQuantity时，从gridId-2开始追挂止盈
            BigDecimal baseQty = new BigDecimal(BASE_QTY);
            BigDecimal qty = new BigDecimal(QTY);
            if (shortPositionSize.compareTo(baseQty) > 0) {
                BigDecimal excess = shortPositionSize.subtract(baseQty);
                int excessCount = excess.divide(qty, 0, RoundingMode.DOWN).intValue();
                for (int i = 0; i < excessCount; i++) {
                    int tpId = shortG.id - 2 - i;
                    Grid tpG = INDEX.get(tpId);
                    if (tpG == null || tpG.shortTpOrderId != null) continue;
                    String tpIdStr = newOrderId();
                    tpG.shortTpOrderId = tpIdStr;
                    log(String.format("  空仓止盈挂单 gridId:%d price:%.1f tpId:%s", tpId, tpG.price, tpIdStr));
                }
            }
        }

        // 3. 检查是否是多仓挂单成交
        Grid longG = findByLongOrderId(orderId);
        if (longG != null && longG.hasLongOrder && tradeId != null && !"0".equals(tradeId)) {
            int filledQty = longG.longFilledQty;
            longG.hasLongOrder = false;
            longG.longOrderId = null;
            extendLongStopLoss(filledQty);
            log(String.format("  多单成交 gridId:%d filledQty:%d", longG.id, filledQty));

            BigDecimal baseQty = new BigDecimal(BASE_QTY);
            BigDecimal qty = new BigDecimal(QTY);
            if (longPositionSize.compareTo(baseQty) > 0) {
                BigDecimal excess = longPositionSize.subtract(baseQty);
                int excessCount = excess.divide(qty, 0, RoundingMode.DOWN).intValue();
                for (int i = 0; i < excessCount; i++) {
                    int tpId = longG.id + 2 + i;
                    Grid tpG = INDEX.get(tpId);
                    if (tpG == null || tpG.longTpOrderId != null) continue;
                    String tpIdStr = newOrderId();
                    tpG.longTpOrderId = tpIdStr;
                    log(String.format("  多仓止盈挂单 gridId:%d price:%.1f tpId:%s", tpId, tpG.price, tpIdStr));
                }
            }
        }
    }

    static void handleLongStopLossTriggered(Grid g) {
        log("  多仓止损触发 gridId:" + g.id);
        g.longSlOrderId = null;
        // 模拟平仓: longPositionSize 减少
        longPositionSize = longPositionSize.subtract(new BigDecimal(QTY));
        if (longPositionSize.compareTo(BigDecimal.ZERO) < 0) longPositionSize = BigDecimal.ZERO;

        // 在gridId+1位置挂新追单
        int newId = g.id + 1;
        Grid newG = INDEX.get(newId);
        if (newG == null) {
            log("  gridId:" + newId + " 不存在，止损追单失败");
            return;
        }

        // 计算size
        BigDecimal baseQty = new BigDecimal(BASE_QTY);
        BigDecimal subtract = baseQty.subtract(longPositionSize);
        int size = QTY + 1;
        if (subtract.compareTo(BigDecimal.ZERO) >= 0) {
            size = subtract.intValue() + 1;
        }
        log(String.format("  挂多单 gridId:%d size:%d (pos=%s)", newId, size, longPositionSize));
        newG.hasLongOrder = true;
        newG.longOrderId = newOrderId();
        newG.longFilledQty = size;

        // 取消gridId+2的多单
        int cancelId = g.id + 2;
        Grid cancelG = INDEX.get(cancelId);
        if (cancelG != null && cancelG.hasLongOrder) {
            log(String.format("  取消gridId:%d的多单 orderId:%s", cancelId, cancelG.longOrderId));
            cancelG.hasLongOrder = false;
            cancelG.longOrderId = null;
        }

        // 取消最远多仓止盈
        Grid farthest = null;
        for (Grid e : gridElements) {
            if (e.longTpOrderId != null) {
                if (farthest == null || e.price.compareTo(farthest.price) > 0) {
                    farthest = e;
                }
            }
        }
        if (farthest != null) {
            log(String.format("  取消最远多仓止盈 gridId:%d orderId:%s", farthest.id, farthest.longTpOrderId));
            farthest.longTpOrderId = null;
        }

        // 持仓归零检查
        if (longPositionSize.compareTo(BigDecimal.ZERO) == 0) {
            longActive = false;
            log("  多仓已全部止损，longActive=false");
        }
    }

    static void handleShortStopLossTriggered(Grid g) {
        log("  空仓止损触发 gridId:" + g.id);
        g.shortSlOrderId = null;
        shortPositionSize = shortPositionSize.subtract(new BigDecimal(QTY));
        if (shortPositionSize.compareTo(BigDecimal.ZERO) < 0) shortPositionSize = BigDecimal.ZERO;

        int newId = g.id - 1;
        Grid newG = INDEX.get(newId);
        if (newG == null) {
            log("  gridId:" + newId + " 不存在，止损追单失败");
            return;
        }

        BigDecimal baseQty = new BigDecimal(BASE_QTY);
        BigDecimal subtract = baseQty.subtract(shortPositionSize);
        int size = QTY + 1;
        if (subtract.compareTo(BigDecimal.ZERO) >= 0) {
            size = subtract.intValue() + 1;
        }
        log(String.format("  挂空单 gridId:%d size:%d (pos=%s)", newId, size, shortPositionSize));
        newG.hasShortOrder = true;
        newG.shortOrderId = newOrderId();
        newG.shortFilledQty = size;

        int cancelId = g.id - 2;
        Grid cancelG = INDEX.get(cancelId);
        if (cancelG != null && cancelG.hasShortOrder) {
            log(String.format("  取消gridId:%d的空单 orderId:%s", cancelId, cancelG.shortOrderId));
            cancelG.hasShortOrder = false;
            cancelG.shortOrderId = null;
        }

        Grid farthest = null;
        for (Grid e : gridElements) {
            if (e.shortTpOrderId != null) {
                if (farthest == null || e.price.compareTo(farthest.price) < 0) {
                    farthest = e;
                }
            }
        }
        if (farthest != null) {
            log(String.format("  取消最远空仓止盈 gridId:%d orderId:%s", farthest.id, farthest.shortTpOrderId));
            farthest.shortTpOrderId = null;
        }

        if (shortPositionSize.compareTo(BigDecimal.ZERO) == 0) {
            shortActive = false;
            log("  空仓已全部止损，shortActive=false");
        }
    }

    static void extendLongStopLoss(int filledQty) {
        // 找到最远止损
        int furthestId = 0;
        for (Grid e : gridElements) {
            if (e.longSlOrderId != null && e.id < furthestId) {
                furthestId = e.id;
            }
        }
        if (furthestId == 0) furthestId = -11;
        for (int i = 0; i < filledQty; i++) {
            int newId = furthestId - i - 1;
            Grid g = INDEX.get(newId);
            if (g == null) continue;
            String slId = newOrderId();
            g.longSlOrderId = slId;
            log(String.format("  多仓止损追加 gridId:%d slId:%s", newId, slId));
        }
    }

    static void extendShortStopLoss(int filledQty) {
        int furthestId = 0;
        for (Grid e : gridElements) {
            if (e.shortSlOrderId != null && e.id > furthestId) {
                furthestId = e.id;
            }
        }
        if (furthestId == 0) furthestId = 11;
        for (int i = 0; i < filledQty; i++) {
            int newId = furthestId + i + 1;
            Grid g = INDEX.get(newId);
            if (g == null) continue;
            String slId = newOrderId();
            g.shortSlOrderId = slId;
            log(String.format("  空仓止损追加 gridId:%d slId:%s", newId, slId));
        }
    }

    // ================================================================
    // 模拟 onPositionUpdate
    // ================================================================
    static void onPositionUpdate(boolean isLong, BigDecimal size, BigDecimal entryPrice) {
        if (isLong) {
            if (size.compareTo(BigDecimal.ZERO) > 0) {
                longActive = true;
                longPositionSize = size;
                longEntryPrice = entryPrice;
            } else {
                longActive = false;
                longPositionSize = BigDecimal.ZERO;
                longEntryPrice = BigDecimal.ZERO;
            }
        } else {
            if (size.compareTo(BigDecimal.ZERO) > 0) {
                shortActive = true;
                shortPositionSize = size;
                shortEntryPrice = entryPrice;
            } else {
                shortActive = false;
                shortPositionSize = BigDecimal.ZERO;
                shortEntryPrice = BigDecimal.ZERO;
            }
        }
    }

    // ================================================================
    // 查找方法
    // ================================================================
    static Grid findByPrice(BigDecimal price) {
        for (Grid g : gridElements) {
            if (g.price.compareTo(price) == 0) return g;
        }
        return null;
    }
    static Grid findByLongSlOrderId(String oid) {
        for (Grid g : gridElements) if (oid.equals(g.longSlOrderId)) return g;
        return null;
    }
    static Grid findByShortSlOrderId(String oid) {
        for (Grid g : gridElements) if (oid.equals(g.shortSlOrderId)) return g;
        return null;
    }
    static Grid findByLongOrderId(String oid) {
        for (Grid g : gridElements) if (oid.equals(g.longOrderId)) return g;
        return null;
    }
    static Grid findByShortOrderId(String oid) {
        for (Grid g : gridElements) if (oid.equals(g.shortOrderId)) return g;
        return null;
    }

    // ================================================================
    // 打印
    // ================================================================
    static void printGridState() {
        System.out.println("\n  === 网格状态 ===");
        System.out.println("  多仓: pos=" + longPositionSize + " active=" + longActive + " entryPrice=" + longEntryPrice);
        System.out.println("  空仓: pos=" + shortPositionSize + " active=" + shortActive + " entryPrice=" + shortEntryPrice);
        for (Grid g : gridElements) {
            System.out.println("  " + g);
        }
    }

    // ================================================================
    // 主模拟流程
    // ================================================================
    public static void main(String[] args) {
        System.out.println(repeat("=",70));
        System.out.println("Gate 网格策略模拟器");
        System.out.println("参数: basePrice=100.0, step=0.5, baseQty=10, qty=1, gridSize=10");
        System.out.println(repeat("=",70));

        init();

        // ---- 场景 A: 价格稳定 → 基底双开 → 进入ACTIVE ----
        System.out.println("\n\n◆◆◆ 场景A: 首根K线，基底双开 ◆◆◆");
        onFirstKline();
        // 模拟 onPositionUpdate 设置基底持仓
        onPositionUpdate(true, new BigDecimal(BASE_QTY), BASE_PRICE);
        onPositionUpdate(false, new BigDecimal(BASE_QTY), BASE_PRICE);

        printGridState();

        // ---- 场景 B: 价格下跌触发多仓止损 ----
        System.out.println("\n\n◆◆◆ 场景B: 价格跌至99.0，触发多仓止损(gridId:-2) ◆◆◆");
        Grid gMinus2 = INDEX.get(-2);
        String slOrderId = gMinus2.longSlOrderId;
        if (slOrderId != null) {
            // 模拟止损成交
            onAutoOrder(slOrderId, "finished", "plan-close-long-position", "T001");
            // 模拟 onPositionUpdate: 多仓从10降到9
            onPositionUpdate(true, new BigDecimal("9"), new BigDecimal("99.5"));
            printGridState();
        } else {
            log("  gridId:-2 无止损单!");
        }

        // ---- 场景 C: 价格持续下跌，再次触发止损 ----
        System.out.println("\n\n◆◆◆ 场景C: 价格跌至98.5，再次触发多仓止损(gridId:-3) ◆◆◆");
        Grid gMinus3 = INDEX.get(-3);
        slOrderId = gMinus3.longSlOrderId;
        if (slOrderId != null) {
            onAutoOrder(slOrderId, "finished", "plan-close-long-position", "T002");
            onPositionUpdate(true, new BigDecimal("8"), new BigDecimal("99.0"));
            printGridState();
        }

        // ---- 场景 D: 止损追单成交，测试止盈追挂 ----
        System.out.println("\n\n◆◆◆ 场景D: 追单成交，触发止盈追挂 ◆◆◆");
        // 找到最近挂的多单
        Grid pendingLong = null;
        for (Grid g : gridElements) {
            if (g.hasLongOrder) {
                pendingLong = g;
                break;
            }
        }
        if (pendingLong != null) {
            // 模拟追单成交，追了2张
            log("\n模拟追单成交: gridId:" + pendingLong.id + " orderId:" + pendingLong.longOrderId);
            longPositionSize = longPositionSize.add(new BigDecimal(pendingLong.longFilledQty));
            log("多仓持仓变为: " + longPositionSize);
            onAutoOrder(pendingLong.longOrderId, "finished", "", "T003");
            onPositionUpdate(true, longPositionSize, BASE_PRICE);
            printGridState();
        }

        // ---- 场景 E: 多仓全部止损归零 ----
        System.out.println("\n\n◆◆◆ 场景E: 价格继续暴跌，多仓全部止损归零 ◆◆◆");
        log("模拟多仓全部平仓...");
        onPositionUpdate(true, BigDecimal.ZERO, BigDecimal.ZERO);
        log("多仓归零, longActive=" + longActive + ", pos=" + longPositionSize);

        // ACTIVE状态下多仓归零 → 下一根K线触发processShortGrid
        System.out.println("\n  下一根K线触发 processShortGrid:");
        onKline(new BigDecimal("95.0"));
        printGridState();

        // ---- 场景 F: 空仓止损触发 ----
        System.out.println("\n\n◆◆◆ 场景F: 价格暴涨至101.0，触发空仓止损(gridId:2) ◆◆◆");
        Grid g2 = INDEX.get(2);
        if (g2 != null && g2.shortSlOrderId != null) {
            onAutoOrder(g2.shortSlOrderId, "finished", "plan-close-short-position", "T004");
            onPositionUpdate(false, new BigDecimal("9"), new BigDecimal("100.5"));
            printGridState();
        }

        // ================================================================
        // BUG 分析
        // ================================================================
        System.out.println("\n\n" + repeat("=",70));
        System.out.println("BUG 分析报告");
        System.out.println(repeat("=",70));

        int bugNum = 1;

        // BUG 1
        System.out.println("\n[BUG-" + (bugNum++) + "] 基座IOC成交不触发onAutoOrder，hasLongOrder/hasShortOrder永久为true");
        System.out.println("  位置: GateGridTradeService.onKline() + tryGenerateQueues()");
        System.out.println("  描述: 基底市价IOC开仓后，tryGenerateQueues中在ID=0设置了hasLongOrder=true/hasShortOrder=true。");
        System.out.println("        但IOC成交不会触发onAutoOrder(条件单回调)，导致ID=0的挂单状态永远不会被清除。");
        System.out.println("  影响: ID=0的hasLongOrder永远为true。当止损触发在gridId=-2时，会尝试取消gridId=0的多单");
        System.out.println("        (cancelGridId = -2 + 2 = 0)，由于IOC已成交，取消会失败但只产生warn日志，无严重后果。");
        System.out.println("        但状态不一致可能影响后续processShortGrid/processLongGrid的匹配逻辑。");
        System.out.println("  修复: tryGenerateQueues中不要用IOC的orderId标记hasLongOrder，或者增加onOrderUpdate回调处理普通订单。");

        // BUG 2
        System.out.println("\n[BUG-" + (bugNum++) + "] handleShortStopLossTriggered 使用了longPositionSize计算size");
        System.out.println("  位置: handleShortStopLossTriggered() line 1176");
        System.out.println("  代码: BigDecimal subtract = baseQuantity.subtract(longPositionSize);");
        System.out.println("  描述: 空仓止损触发时，用 longPositionSize 来计算追单size，应该用 shortPositionSize。");
        System.out.println("  影响: 空仓止损追单的size计算基于多头持仓而非空头持仓，导致补仓数量错误。");
        System.out.println("        例如多仓持仓5，空仓持仓9，空仓止损触发时: subtract = 10 - 5 = 5, size = 5+1 = 6.");
        System.out.println("        应该是: subtract = 10 - 9 = 1, size = 1+1 = 2.");
        System.out.println("  修复: 将 longPositionSize 改为 shortPositionSize。");

        // BUG 3
        System.out.println("\n[BUG-" + (bugNum++) + "] onAutoOrder中持仓判断存在竞态问题");
        System.out.println("  位置: onAutoOrder() 追挂止盈逻辑 (line 617/655)");
        System.out.println("  描述: onAutoOrder被调用时，longPositionSize/shortPositionSize可能尚未被onPositionUpdate更新。");
        System.out.println("        WebSocket消息顺序虽然是顺序的，但onAutoOrder基于orders/autoorders频道，");
        System.out.println("        onPositionUpdate基于positions频道，两者到达顺序不一定严格匹配。");
        System.out.println("  影响: 追挂止盈的excessCount计算可能偏小(持仓尚未更新)，导致少挂止盈单。");
        System.out.println("        下次fill时会再次尝试追挂，重复计算可能产生多余止盈单。");
        System.out.println("  修复: 考虑在onPositionUpdate中做止盈追挂，或基于filledQty累加预估新持仓。");

        // BUG 4
        System.out.println("\n[BUG-" + (bugNum++) + "] 止盈追挂从gridId±2开始，可能覆盖已有止损单的网格位置");
        System.out.println("  位置: onAutoOrder() 止盈追挂逻辑");
        System.out.println("  描述: 止盈追挂从 filledGridId+2(多)/filledGridId-2(空) 开始。");
        System.out.println("        但这些位置可能已经被止损单占用(如initStopLossOrders在ID 2~11和-2~-11挂止损)。");
        System.out.println("        虽然止盈和止损是不同的订单(分别存在takeProfitOrderId和stopLossOrderId中)，");
        System.out.println("        但同一个GridElement同时有止盈和止损，在状态追踪上可能模糊。");
        System.out.println("  影响: 同一个网格位置可能同时有止盈和止损订单，当订单成交回调时可能匹配错误。");
        System.out.println("  风险: 中低。onAutoOrder先用findByLongStopLossOrderId匹配止损，再匹配入口单，止盈不会被匹配。");

        // BUG 5 → 已确认为设计意图，移除
        System.out.println("\n[OK-5] processShortGrid/processLongGrid 只在对方持仓归零时触发 — 属于设计意图，非BUG");
        System.out.println("  位置: onKline() line 389-400");
        System.out.println("  描述: 策略有两套驱动机制：有持仓时走订单驱动(onAutoOrder处理挂单成交/止损追单)，");
        System.out.println("        当某方向持仓归零后切换到价格驱动(onKline→processGrid)，挂新入场单后回到订单驱动。");
        System.out.println("        两套机制交替运作，确保仓位归零后能基于当前价格重新入场。");

        // BUG 6
        System.out.println("\n[BUG-" + (bugNum++) + "] processShortGrid/processLongGrid 中 size 使用 BASE_QTY 而非 QTY");
        System.out.println("  位置: processShortGrid() line 1027, processLongGrid() line 1077");
        System.out.println("  描述: 仓位归零后重新挂单时，使用 baseQuantity 而不是 quantity。");
        System.out.println("        例如 baseQuantity=10，会在新位置挂10张，而其他网格层级只挂1张。");
        System.out.println("  影响: 每次仓位归零后的重新入场都是10张，可能导致持仓量远超预期。");
        System.out.println("  风险: 可能是设计意图(仓位归零后需要重建基底仓位)，但需确认。");

        // BUG 7
        System.out.println("\n[BUG-" + (bugNum++) + "] extendLongStopLoss/extendShortStopLoss 不停向外扩展");
        System.out.println("  位置: extendLongStopLoss() line 1216, extendShortStopLoss() line 1249");
        System.out.println("  描述: 每次成交都调用extend，从当前最远止损位置继续向外挂filledQty个止损单。");
        System.out.println("        如果成交次数多，止损单会无限向外扩展(比如挂到gridId=-100)。");
        System.out.println("  影响: 大量止损单可能超出交易所限制(Gate条件单上限通常200个)。并且止损位置离当前价");
        System.out.println("        越来越远，实际作用不大但占用资源。");
        System.out.println("  风险: 低中。止损位置越来越远意味着回撤越来越大，风控上可能已经触发maxLoss停止策略。");

        // BUG 8 → 已确认为设计意图，移除
        System.out.println("\n[OK-8] onPositionUpdate 中两仓归零异步重启策略 — 属于设计意图，非BUG");
        System.out.println("  位置: onPositionUpdate() line 522-538");
        System.out.println("  描述: 当 shortActive==false && longActive==false 时，取消所有条件单并平仓，");
        System.out.println("        然后异步sleep 3s后调用startGrid重启；双仓归零后重新开启一轮新策略。");

        // BUG 9
        System.out.println("\n[BUG-" + (bugNum++) + "] onAutoOrder中stopLoss匹配缺少positionSize校验");
        System.out.println("  位置: onAutoOrder() line 595-604");
        System.out.println("  描述: 原始代码有 longPositionSize > 0 的校验但被注释掉了:");
        System.out.println("        // if (longStopLossElem != null && longPositionSize.compareTo(BigDecimal.ZERO) > 0 ...");
        System.out.println("       现在只要tradeId非空非0就触发handler。");
        System.out.println("  影响: 如果多仓已全部平仓但止损单尚未取消(异步延迟)，止损单的finished回调");
        System.out.println("        仍会触发handleLongStopLossTriggered，产生多余的追单操作。");
        System.out.println("  修复: 恢复positionSize > 0的校验。");

        // BUG 10
        System.out.println("\n[BUG-" + (bugNum++) + "] tryGenerateQueues中上/下ID分配有误导性命名");
        System.out.println("  位置: updateGridElements() line 960-967");
        System.out.println("  描述: ID=0的upId=1(指向高价), downId=-1(指向低价)。");
        System.out.println("        在注释和文档中写的是 upId=-1, downId=1，但代码实际是反过来的。");
        System.out.println("        实际语义: upId=\"向上的价格\"(更大ID), downId=\"向下的价格\"(更小ID)。");
        System.out.println("  影响: 代码实际工作正确，但注释和代码不一致，容易误导维护者。");
        System.out.println("  状态: 可能是早期代码重构遗留，实际语义是\"up=价格向上, down=价格向下\"。");

        // BUG 11
        System.out.println("\n[BUG-" + (bugNum++) + "] currentLongOrderIds/currentShortOrderIds 声明但从未使用");
        System.out.println("  位置: GateGridTradeService line 119-121");
        System.out.println("  描述: currentLongOrderIds 和 currentShortOrderIds 是 synchronized LinkedHashMap，");
        System.out.println("        声明但代码中没有任何put操作，只有clear。");
        System.out.println("  影响: 死代码，占用内存但无实际作用。代码中对此Map的使用意图已过时。");

        // BUG 12
        System.out.println("\n[BUG-" + (bugNum++) + "] onAutoOrder中已成交的挂单仍通过isHasLongOrder检测");
        System.out.println("  位置: onAutoOrder() line 608/617");
        System.out.println("  描述: 当查找shortGridElement时，检查 isHasShortOrder() 为true才处理。");
        System.out.println("        但同一个orderId被匹配到说明它确实是挂单，检查 isHasShortOrder 可能因");
        System.out.println("        placeEntryOrderWithPreFlag的竞态导致问题(API失败→回滚→但WS已推送)。");
        System.out.println("  影响: 如果挂单API失败但WS已推送finished回调，isHasShortOrder可能已回滚为false，");
        System.out.println("        导致成交回调被忽略，持仓状态与实际不符。");
        System.out.println("  风险: 极低(需要API失败+WS推送的精确时序)。");
    }
}