#ifndef HIT_TRADE_MANAGER_MQH
#define HIT_TRADE_MANAGER_MQH


//+------------------------------------------------------------------+
//| 注文ロットがブローカー制約を満たすか判定する関数
//+------------------------------------------------------------------+
/**
 * @brief 通常注文と分割注文の最終送信前に volume min/max/step を検証します。
 */
bool IsOrderVolumeAllowed(const double volume, const string context)
  {
   double min_volume = SymbolInfoDouble(_Symbol, SYMBOL_VOLUME_MIN);
   double max_volume = SymbolInfoDouble(_Symbol, SYMBOL_VOLUME_MAX);
   double step_volume = SymbolInfoDouble(_Symbol, SYMBOL_VOLUME_STEP);

   if(volume <= 0.0 || min_volume <= 0.0 || max_volume <= 0.0 || step_volume <= 0.0)
     {
      Print("[Order Skip] invalid volume setting. context=", context,
            " volume=", volume, " min=", min_volume,
            " max=", max_volume, " step=", step_volume);
      return false;
     }

   if(volume < min_volume || volume > max_volume)
     {
      Print("[Order Skip] volume out of range. context=", context,
            " volume=", volume, " min=", min_volume, " max=", max_volume);
      return false;
     }

   double steps = (volume - min_volume) / step_volume;
   double nearest = MathRound(steps);
   if(MathAbs(steps - nearest) > 0.000001)
     {
      Print("[Order Skip] volume does not match broker step. context=", context,
            " volume=", volume, " min=", min_volume, " step=", step_volume);
      return false;
     }

   return true;
  }

//+------------------------------------------------------------------+
//| ブローカーのロットstepから正規化桁数を推定する関数
//+------------------------------------------------------------------+
int VolumeDigits()
  {
   int volume_digits = 2;
   double step_volume = SymbolInfoDouble(_Symbol, SYMBOL_VOLUME_STEP);
   if(step_volume > 0.0)
     {
      volume_digits = 0;
      double step = step_volume;
      while(step < 1.0 && volume_digits < 8)
        {
         step *= 10.0;
         volume_digits++;
        }
     }

   return volume_digits;
  }

//+------------------------------------------------------------------+
//| エントリー注文を送信する関数 (1:buy-stop, 2:buy-limit, 3:sell-stop, 4:sell-limit)
//+------------------------------------------------------------------+
/**
 * @brief 指定された注文タイプでペンディング注文を送信します。
 *
 * @param orderType 注文タイプ。1=Buy Stop、2=Buy Limit、3=Sell Stop、4=Sell Limit。
 * @param price エントリー価格。
 * @param tp 利確価格。
 * @param sl 損切価格。
 * @param volume 注文ロット。
 * @param comment_suffix H1候補または分割注文識別用のコメント接尾辞。空なら従来コメント。
 * @param candidate_reference_time H1候補の元になった確定足時刻。取得不能時は0。
 * @return 注文が正常に受理された場合はtrue、それ以外はfalse。
 */
bool SendOrder(int orderType, double price, double tp, double sl, double volume,
               string comment_suffix, datetime candidate_reference_time)
  {
   MqlTradeRequest request  = {};
   MqlTradeResult result    = {};

   request.magic            = magic_number;
   request.symbol           = _Symbol;
   request.volume           = NormalizeDouble(volume, VolumeDigits());
   request.deviation        = slippage;
   request.type_filling     = GetOrderFillingPolicy(_Symbol);
   request.price            = NormalizeDouble(price, (int)SymbolInfoInteger(_Symbol, SYMBOL_DIGITS));
   request.tp               = NormalizeDouble(tp, (int)SymbolInfoInteger(_Symbol, SYMBOL_DIGITS));
   request.sl               = NormalizeDouble(sl, (int)SymbolInfoInteger(_Symbol, SYMBOL_DIGITS));
   request.comment          = RequestComment(orderType, comment_suffix);

   string orderTypeStr      = "";

// 指値または逆指値注文
   request.action = TRADE_ACTION_PENDING;
   if(!ApplyPendingOrderExpiration(request, candidate_reference_time))
      return false;

   switch(orderType)
     {
      case 1: // 順張り買い (buy-stop)
         request.type   = ORDER_TYPE_BUY_STOP;
         orderTypeStr   = "buy-stop";
         break;

      case 2: // 逆張り買い (buy-limit)
         request.type   = ORDER_TYPE_BUY_LIMIT;
         orderTypeStr   = "buy-limit";
         break;

      case 3: // 順張り売り (sell-stop)
         request.type   = ORDER_TYPE_SELL_STOP;
         orderTypeStr   = "sell-stop";
         break;

      case 4: // 逆張り売り (sell-limit)
         request.type   = ORDER_TYPE_SELL_LIMIT;
         orderTypeStr   = "sell-limit";
         break;

      default: // 不正なorderType
         Print(__FUNCTION__, ": invalid orderType=", orderType);
         return false;
     }

   string volume_context = orderTypeStr;
   if(comment_suffix != "")
      volume_context += " " + comment_suffix;
   if(!IsOrderVolumeAllowed(volume, volume_context))
      return false;

// 注文送信
   if(!OrderSend(request, result))
     {
      Print(__FUNCTION__, ": OrderSend failed. err=", GetLastError());
      return false;
     }

// 注文成功確認
   if(result.retcode == TRADE_RETCODE_PLACED ||
      result.retcode == TRADE_RETCODE_DONE ||
      result.retcode == TRADE_RETCODE_DONE_PARTIAL)
     {
      Print(request.comment + " - " + orderTypeStr + " order success (ticket=", result.order, ")");
      return true;
     }
   else
     {
      Print(__FUNCTION__, ": OrderSend retcode=", result.retcode);
      return false;
     }
  }

//+------------------------------------------------------------------+
//| 注文の執行ポリシーを取得する関数
//+------------------------------------------------------------------+
/**
 * @brief シンボルに対応する注文執行ポリシーを取得します。
 *
 * @param symbol 対象シンボル。
 * @return 利用可能な執行ポリシー。IOC、FOK、RETURNの順で選択します。
 */
ENUM_ORDER_TYPE_FILLING GetOrderFillingPolicy(string symbol)
  {
   long fill_mode = SymbolInfoInteger(symbol, SYMBOL_FILLING_MODE);
   if((fill_mode & SYMBOL_FILLING_IOC) != 0)
      return ORDER_FILLING_IOC;
   if((fill_mode & SYMBOL_FILLING_FOK) != 0)
      return ORDER_FILLING_FOK;
   return ORDER_FILLING_RETURN;
  }

//+------------------------------------------------------------------+
//| ペンディング注文の有効期限を設定する関数
//+------------------------------------------------------------------+
/**
 * @brief brokerが対応している範囲でpending orderにサーバー側の期限を設定します。
 *
 * @param request 更新対象の取引リクエスト。
 * @param candidate_reference_time H1候補の元になった確定足時刻。取得不能時は0。
 * @return H1候補の期限が残っている場合はtrue。発注前に期限切れならfalse。
 */
bool ApplyPendingOrderExpiration(MqlTradeRequest &request, const datetime candidate_reference_time)
  {
   int expiration_seconds = ENTRY_H1_LIMIT * PeriodSeconds(PERIOD_H1);
   datetime expiration_at = TimeCurrent() + expiration_seconds;
   if(candidate_reference_time > 0)
      expiration_at = candidate_reference_time + expiration_seconds;

   if(expiration_seconds <= 0 || expiration_at <= TimeCurrent())
     {
      Print("[Order Skip] H1 candidate expiration is not in the future. candidate_at=",
            TimeToString(candidate_reference_time, TIME_DATE | TIME_SECONDS),
            " expiration_at=", TimeToString(expiration_at, TIME_DATE | TIME_SECONDS));
      return false;
     }

   long expiration_mode = SymbolInfoInteger(request.symbol, SYMBOL_EXPIRATION_MODE);

   if((expiration_mode & SYMBOL_EXPIRATION_SPECIFIED) != 0)
     {
      request.type_time = ORDER_TIME_SPECIFIED;
      request.expiration = expiration_at;
      return true;
     }

   if((expiration_mode & SYMBOL_EXPIRATION_SPECIFIED_DAY) != 0)
     {
      request.type_time = ORDER_TIME_SPECIFIED_DAY;
      request.expiration = expiration_at;
      return true;
     }

   if((expiration_mode & SYMBOL_EXPIRATION_DAY) != 0)
     {
      request.type_time = ORDER_TIME_DAY;
      return true;
     }

   request.type_time = ORDER_TIME_GTC;
   return true;
  }

//+------------------------------------------------------------------+
//| 注文コメント(ローカル時刻)を生成する関数（先頭に orderType を付与）
//+------------------------------------------------------------------+
/**
 * @brief 注文コメント文字列を生成します。
 *
 * @param orderType 注文タイプ番号。
 * @param comment_suffix 分割注文識別用のコメント接尾辞。
 * @return 注文タイプとPCローカル時刻、または分割注文識別子を含むコメント文字列。
 */
string RequestComment(int orderType, string comment_suffix)
  {
   if(comment_suffix != "")
      return "T" + IntegerToString(orderType) + " " + comment_suffix;

   datetime localTime = TimeLocal();
   string timeStr     = TimeToString(localTime, TIME_DATE|TIME_MINUTES);

// 先頭に 1,2,3,4 を付ける（例: "1 | PC Time: 2026.02.14 19:05"）
   return IntegerToString(orderType) + " | PC Time: " + timeStr;
  }

//+------------------------------------------------------------------+
//| H4 market_stateに対して許可された注文タイプか判定する関数
//+------------------------------------------------------------------+
/**
 * @brief H4 market_stateに対して指定注文タイプが許可されるか判定します。
 *
 * @param orderType 注文タイプ番号。
 * @param trend_state H4 market_state（0..5、6は技術エラー停止）。
 * @return 許可される注文タイプならtrue。技術エラー停止または異常値ではfalse。
 */
bool IsOrderTypeAllowedByTrend(const int orderType, const int trend_state)
  {
   switch(trend_state)
     {
      case MARKET_LOW_VOL_RANGE:
      case MARKET_HIGH_VOL_RANGE:
         return (orderType == 2 || orderType == 4); // Range: Buy Limit / Sell Limitのみ

      case MARKET_LOW_VOL_UP:
      case MARKET_HIGH_VOL_UP:
         return (orderType == 1 || orderType == 2); // Up: Buy Stop / Buy Limitのみ

      case MARKET_LOW_VOL_DOWN:
      case MARKET_HIGH_VOL_DOWN:
         return (orderType == 3 || orderType == 4); // Down: Sell Stop / Sell Limitのみ

      case MARKET_TECHNICAL_ERROR_STOP:
      default:
         return false; // 技術エラー停止または異常値は新規注文しない
     }
  }

//+------------------------------------------------------------------+
//| target_prices.txt の価格が有効か判定する関数
//+------------------------------------------------------------------+
/**
 * @brief エントリー価格、利確価格、損切価格が有効値か判定します。
 *
 * @param en エントリー価格。
 * @param tp 利確価格。
 * @param sl 損切価格。
 * @return すべて0より大きい場合はtrue。
 */
bool HasValidTargetPrices(const double en, const double tp, const double sl)
  {
   return (en > 0.0 && tp > 0.0 && sl > 0.0);
  }

//+------------------------------------------------------------------+
//| 自EAの未約定注文数を数える関数
//+------------------------------------------------------------------+
/**
 * @brief このEAが管理対象とする未約定注文数を数えます。
 *
 * @return `_Symbol` と `magic_number` が一致する未約定注文数。
 */
int CountMyPendingOrders()
  {
   int count = 0;

   for(int i = OrdersTotal() - 1; i >= 0; i--)
     {
      ulong ticket = OrderGetTicket(i);
      if(ticket == 0)
         continue;

      if(!OrderSelect(ticket))
         continue;

      if(OrderGetString(ORDER_SYMBOL) != _Symbol)
         continue;

      if((int)OrderGetInteger(ORDER_MAGIC) != magic_number)
         continue;

      count++;
     }

   return count;
  }

//+------------------------------------------------------------------+
//| 自EAのポジション数を数える関数
//+------------------------------------------------------------------+
/**
 * @brief このEAが管理対象とする保有ポジション数を数えます。
 *
 * @return `_Symbol` と `magic_number` が一致するポジション数。
 */
int CountMyPositions()
  {
   int count = 0;

   for(int i = PositionsTotal() - 1; i >= 0; i--)
     {
      string symbol = PositionGetSymbol(i);
      if(symbol == "")
         continue;

      if(symbol != _Symbol)
         continue;

      if((int)PositionGetInteger(POSITION_MAGIC) != magic_number)
         continue;

      count++;
     }

   return count;
  }

//+------------------------------------------------------------------+
//| 自EAの注文＋ポジション数を数える関数
//+------------------------------------------------------------------+
/**
 * @brief このEAが使用中の注文数とポジション数の合計を返します。
 *
 * @return 未約定注文数 + 保有ポジション数。
 */
int CountMyUsed()
  {
   return CountMyPendingOrders() + CountMyPositions();
  }

//+------------------------------------------------------------------+
//| 実効ポジション上限を返す関数
//+------------------------------------------------------------------+
/**
 * @brief input指定の上限を安全な範囲に丸めて返します。
 */
int EffectivePositionLimit()
  {
   int limit = input_position_limit;
   if(limit < 1)
      limit = 1;
   if(limit > POSITION_LIMIT)
      limit = POSITION_LIMIT;

   return limit;
  }

//+------------------------------------------------------------------+
//| 分割注文コメントか判定する関数
//+------------------------------------------------------------------+
bool IsSplitOrderComment(const string comment)
  {
   return (StringFind(comment, " Z") >= 0 && StringFind(comment, "#") >= 0);
  }

//+------------------------------------------------------------------+
//| 指定候補IDの分割注文コメントか判定する関数
//+------------------------------------------------------------------+
bool IsCurrentSplitCandidateComment(const string comment, const string candidate_id)
  {
   if(candidate_id == "" || candidate_id == "0")
      return false;

   return (StringFind(comment, "Z" + candidate_id + "#") >= 0);
  }

//+------------------------------------------------------------------+
//| pending取消のticket単位クールダウン管理
//+------------------------------------------------------------------+
// Prevent repeated server-side cancel requests for the same pending ticket.
int EffectiveCancelRetryCooldownSeconds()
  {
   int cooldown = input_cancel_retry_cooldown_seconds;
   if(cooldown < 1)
      cooldown = 1;
   if(cooldown > 3600)
      cooldown = 3600;

   return cooldown;
  }

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
int FindPendingOrderCancelAttempt(const ulong ticket)
  {
   for(int i = ArraySize(g_cancel_retry_tickets) - 1; i >= 0; i--)
     {
      if(g_cancel_retry_tickets[i] == ticket)
         return i;
     }

   return -1;
  }

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void RemovePendingOrderCancelAttemptAt(const int index)
  {
   int size = ArraySize(g_cancel_retry_tickets);
   if(index < 0 || index >= size)
      return;

   int last = size - 1;
   if(index != last)
     {
      g_cancel_retry_tickets[index] = g_cancel_retry_tickets[last];
      g_cancel_retry_at[index] = g_cancel_retry_at[last];
     }

   ArrayResize(g_cancel_retry_tickets, last);
   ArrayResize(g_cancel_retry_at, last);
  }

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void ForgetPendingOrderCancelAttempt(const ulong ticket)
  {
   RemovePendingOrderCancelAttemptAt(FindPendingOrderCancelAttempt(ticket));
  }

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
bool CanAttemptPendingOrderCancel(const ulong ticket)
  {
   int index = FindPendingOrderCancelAttempt(ticket);
   if(index < 0)
      return true;

   return (TimeCurrent() - g_cancel_retry_at[index] >= EffectiveCancelRetryCooldownSeconds());
  }

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void MarkPendingOrderCancelAttempt(const ulong ticket)
  {
   int index = FindPendingOrderCancelAttempt(ticket);
   if(index >= 0)
     {
      g_cancel_retry_at[index] = TimeCurrent();
      return;
     }

   int size = ArraySize(g_cancel_retry_tickets);
   ArrayResize(g_cancel_retry_tickets, size + 1);
   ArrayResize(g_cancel_retry_at, size + 1);
   g_cancel_retry_tickets[size] = ticket;
   g_cancel_retry_at[size] = TimeCurrent();
  }

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void CleanupPendingOrderCancelAttempts()
  {
   for(int i = ArraySize(g_cancel_retry_tickets) - 1; i >= 0; i--)
     {
      if(!OrderSelect(g_cancel_retry_tickets[i]))
         RemovePendingOrderCancelAttemptAt(i);
     }
  }

//+------------------------------------------------------------------+
//| pending取消要求を共通化する関数
//+------------------------------------------------------------------+
/**
 * @brief 同一ticketへの取消要求をクールダウンし、取引サーバーへの過剰送信を防ぎます。
 */
bool TryCancelPendingOrder(const ulong ticket, const string reason)
  {
   if(ticket == 0 || !CanAttemptPendingOrderCancel(ticket))
      return false;

   MarkPendingOrderCancelAttempt(ticket);

   MqlTradeRequest request = {};
   MqlTradeResult trade_result = {};
   request.action = TRADE_ACTION_REMOVE;
   request.order = ticket;

   ResetLastError();
   if(!OrderSend(request, trade_result))
     {
      Print("Failed to delete order. Ticket: ", ticket,
            " Reason: ", reason, " Error: ", GetLastError(),
            " RetryAfterSeconds: ", EffectiveCancelRetryCooldownSeconds());
      return false;
     }

   if(trade_result.retcode == TRADE_RETCODE_DONE)
     {
      Print("Pending order canceled. Ticket: ", ticket, " Reason: ", reason);
      ForgetPendingOrderCancelAttempt(ticket);
      return true;
     }

   Print("Order cancellation failed. Ticket: ", ticket,
         " Reason: ", reason, " Retcode: ", trade_result.retcode,
         " RetryAfterSeconds: ", EffectiveCancelRetryCooldownSeconds());
   return false;
  }

//+------------------------------------------------------------------+
//| pending注文タイプをEA戦略番号へ変換する関数
//+------------------------------------------------------------------+
int PendingOrderStrategy(const ENUM_ORDER_TYPE order_type)
  {
   switch(order_type)
     {
      case ORDER_TYPE_BUY_STOP:
         return 1;
      case ORDER_TYPE_BUY_LIMIT:
         return 2;
      case ORDER_TYPE_SELL_STOP:
         return 3;
      case ORDER_TYPE_SELL_LIMIT:
         return 4;
      default:
         return 0;
     }
  }

//+------------------------------------------------------------------+
//| H4 market_stateと矛盾するpending注文を取消する関数
//+------------------------------------------------------------------+
// Cancel pending orders that contradict the refreshed H4 market state.
bool CancelPendingOrdersNotAllowedByTrend(const int trend_state)
  {
   bool result = false;
   CleanupPendingOrderCancelAttempts();

   for(int i = OrdersTotal() - 1; i >= 0; i--)
     {
      ulong ticket = OrderGetTicket(i);
      if(ticket == 0 || !OrderSelect(ticket))
         continue;
      if(OrderGetString(ORDER_SYMBOL) != _Symbol)
         continue;
      if((int)OrderGetInteger(ORDER_MAGIC) != magic_number)
         continue;

      int strategy = PendingOrderStrategy((ENUM_ORDER_TYPE)OrderGetInteger(ORDER_TYPE));
      if(strategy > 0 && IsOrderTypeAllowedByTrend(strategy, trend_state))
         continue;

      string reason = "H4 market_state=" + IntegerToString(trend_state) +
                      " strategy=" + IntegerToString(strategy);
      if(TryCancelPendingOrder(ticket, reason))
         result = true;
     }

   return result;
  }

//+------------------------------------------------------------------+
//| レンジブレイクガード用の入力値を安全な範囲へ丸める関数群
//+------------------------------------------------------------------+
int EffectiveRangeBreakoutLookbackBars()
  {
   int bars = input_range_breakout_lookback_bars;
   if(bars < 5)
      bars = 5;
   if(bars > 200)
      bars = 200;

   return bars;
  }

double EffectiveRangeBreakoutMaxWidthMultiplier()
  {
   double multiplier = input_range_breakout_max_width_multiplier;
   if(multiplier < 0.0)
      multiplier = 0.0;
   if(multiplier > 100.0)
      multiplier = 100.0;

   return multiplier;
  }

double EffectiveRangeBreakoutBufferMultiplier()
  {
   double multiplier = input_range_breakout_buffer_multiplier;
   if(multiplier <= 0.0)
      multiplier = 0.20;
   if(multiplier > 10.0)
      multiplier = 10.0;

   return multiplier;
  }

double EffectiveRangeBreakoutNearMultiplier()
  {
   double multiplier = input_range_breakout_near_multiplier;
   if(multiplier <= 0.0)
      multiplier = 0.50;
   if(multiplier > 20.0)
      multiplier = 20.0;

   return multiplier;
  }

double EffectiveRangeBreakoutBodyMultiplier()
  {
   double multiplier = input_range_breakout_body_multiplier;
   if(multiplier <= 0.0)
      multiplier = 1.50;
   if(multiplier > 20.0)
      multiplier = 20.0;

   return multiplier;
  }

int EffectiveRangeBreakoutCooldownBars()
  {
   int bars = input_range_breakout_cooldown_bars;
   if(bars < 1)
      bars = 1;
   if(bars > 96)
      bars = 96;

   return bars;
  }

//+------------------------------------------------------------------+
//| レンジブレイク方向の表示名
//+------------------------------------------------------------------+
string RangeBreakoutDirectionName(const int direction)
  {
   if(direction == RANGE_BREAKOUT_UP)
      return "UP";
   if(direction == RANGE_BREAKOUT_DOWN)
      return "DOWN";

   return "NONE";
  }

//+------------------------------------------------------------------+
//| 価格を現在シンボルの桁数で表示する関数
//+------------------------------------------------------------------+
string RangeBreakoutPriceText(const double price)
  {
   int digits = (int)SymbolInfoInteger(_Symbol, SYMBOL_DIGITS);
   return DoubleToString(price, digits);
  }

//+------------------------------------------------------------------+
//| 期限切れのレンジブレイクガード状態を解除する関数
//+------------------------------------------------------------------+
void ExpireRangeBreakoutLimitGuard()
  {
   if(g_range_breakout_guard_direction == RANGE_BREAKOUT_NONE)
      return;
   if(g_range_breakout_guard_until <= 0)
      return;
   if(TimeCurrent() < g_range_breakout_guard_until)
      return;

   Print("[Range Breakout Guard] cooldown expired. direction=",
         RangeBreakoutDirectionName(g_range_breakout_guard_direction));
   g_range_breakout_guard_direction = RANGE_BREAKOUT_NONE;
   g_range_breakout_guard_until = 0;
  }

//+------------------------------------------------------------------+
//| レンジブレイク状態を有効化する関数
//+------------------------------------------------------------------+
void ActivateRangeBreakoutLimitGuard(const int direction, const string reason)
  {
   if(direction == RANGE_BREAKOUT_NONE)
      return;

   int timeframe_seconds = PeriodSeconds(input_range_breakout_guard_timeframe);
   if(timeframe_seconds <= 0)
      timeframe_seconds = PeriodSeconds(_Period);
   if(timeframe_seconds <= 0)
      timeframe_seconds = 60;

   datetime new_until = TimeCurrent() + timeframe_seconds * EffectiveRangeBreakoutCooldownBars();
   if(g_range_breakout_guard_direction == direction &&
      g_range_breakout_guard_until > TimeCurrent())
      return;

   g_range_breakout_guard_direction = direction;
   g_range_breakout_guard_until = new_until;

   Print("[Range Breakout Guard] activated. direction=", RangeBreakoutDirectionName(direction),
         " until=", TimeToString(g_range_breakout_guard_until, TIME_DATE | TIME_SECONDS),
         " reason=", reason);
  }

//+------------------------------------------------------------------+
//| レンジブレイクを分析し、逆張りLimitを止める方向を返す関数
//+------------------------------------------------------------------+
bool AnalyzeRangeBreakoutLimitGuard(TickContext &ctx, int &direction, string &reason)
  {
   direction = RANGE_BREAKOUT_NONE;
   reason = "";

   if(!input_range_breakout_guard_enabled)
      return false;

   int lookback = EffectiveRangeBreakoutLookbackBars();
   MqlRates rates[];
   int copied = CopyRates(_Symbol, input_range_breakout_guard_timeframe, 1, lookback + 1, rates);
   if(copied < lookback + 1)
      return false;

   int last_index = copied - 1;
   int history_count = copied - 1;
   if(history_count < lookback || last_index <= 0)
      return false;

   bool initialized = false;
   double range_high = 0.0;
   double range_low = 0.0;
   double total_range = 0.0;
   double total_body = 0.0;

   // Build the reference range from closed bars before the latest closed bar.
   for(int i = 0; i < history_count; i++)
     {
      if(!initialized)
        {
         range_high = rates[i].high;
         range_low = rates[i].low;
         initialized = true;
        }
      else
        {
         if(rates[i].high > range_high)
            range_high = rates[i].high;
         if(rates[i].low < range_low)
            range_low = rates[i].low;
        }

      total_range += rates[i].high - rates[i].low;
      total_body += MathAbs(rates[i].close - rates[i].open);
     }

   if(!initialized)
      return false;

   double avg_range = total_range / history_count;
   double avg_body = total_body / history_count;
   if(avg_range <= 0.0)
      avg_range = Point();
   if(avg_body <= 0.0)
      avg_body = Point();

   double range_width = range_high - range_low;
   if(range_width <= 0.0)
      return false;

   double max_width_multiplier = EffectiveRangeBreakoutMaxWidthMultiplier();
   if(max_width_multiplier > 0.0 && range_width > avg_range * max_width_multiplier)
      return false;

   MqlRates last_bar = rates[last_index];
   double buffer = MathMax(avg_range * EffectiveRangeBreakoutBufferMultiplier(), ctx.spread);
   double near_buffer = MathMax(avg_range * EffectiveRangeBreakoutNearMultiplier(), ctx.spread);
   double body_threshold = avg_body * EffectiveRangeBreakoutBodyMultiplier();
   double last_body = MathAbs(last_bar.close - last_bar.open);

   bool last_bullish = (last_bar.close > last_bar.open);
   bool last_bearish = (last_bar.close < last_bar.open);
   bool last_large_body = (last_body >= body_threshold);

   bool confirmed_up = (last_bar.close > range_high + buffer);
   bool confirmed_down = (last_bar.close < range_low - buffer);
   bool warning_up = (ctx.bid >= range_high - near_buffer &&
                      (confirmed_up || ctx.bid > range_high + buffer ||
                       (last_bullish && (last_large_body || last_bar.close > range_high))));
   bool warning_down = (ctx.ask <= range_low + near_buffer &&
                        (confirmed_down || ctx.ask < range_low - buffer ||
                         (last_bearish && (last_large_body || last_bar.close < range_low))));

   if(confirmed_up || warning_up)
     {
      direction = RANGE_BREAKOUT_UP;
      reason = "upward " + string(confirmed_up ? "confirmed" : "warning") +
               " tf=" + EnumToString(input_range_breakout_guard_timeframe) +
               " range=[" + RangeBreakoutPriceText(range_low) + "," +
               RangeBreakoutPriceText(range_high) + "] bid=" +
               RangeBreakoutPriceText(ctx.bid) + " last_close=" +
               RangeBreakoutPriceText(last_bar.close);
      return true;
     }

   if(confirmed_down || warning_down)
     {
      direction = RANGE_BREAKOUT_DOWN;
      reason = "downward " + string(confirmed_down ? "confirmed" : "warning") +
               " tf=" + EnumToString(input_range_breakout_guard_timeframe) +
               " range=[" + RangeBreakoutPriceText(range_low) + "," +
               RangeBreakoutPriceText(range_high) + "] ask=" +
               RangeBreakoutPriceText(ctx.ask) + " last_close=" +
               RangeBreakoutPriceText(last_bar.close);
      return true;
     }

   return false;
  }

//+------------------------------------------------------------------+
//| レンジブレイク方向と逆向きのLimit pendingを取消する関数
//+------------------------------------------------------------------+
bool CancelRangeBreakoutOppositeLimitOrders(const int direction, const string reason)
  {
   if(direction == RANGE_BREAKOUT_NONE)
      return false;

   bool result = false;
   CleanupPendingOrderCancelAttempts();

   for(int i = OrdersTotal() - 1; i >= 0; i--)
     {
      ulong ticket = OrderGetTicket(i);
      if(ticket == 0 || !OrderSelect(ticket))
         continue;
      if(OrderGetString(ORDER_SYMBOL) != _Symbol)
         continue;
      if((int)OrderGetInteger(ORDER_MAGIC) != magic_number)
         continue;

      ENUM_ORDER_TYPE order_type = (ENUM_ORDER_TYPE)OrderGetInteger(ORDER_TYPE);
      bool should_cancel = ((direction == RANGE_BREAKOUT_UP && order_type == ORDER_TYPE_SELL_LIMIT) ||
                            (direction == RANGE_BREAKOUT_DOWN && order_type == ORDER_TYPE_BUY_LIMIT));
      if(!should_cancel)
         continue;

      if(TryCancelPendingOrder(ticket, "range breakout guard: " + reason))
         result = true;
     }

   return result;
  }

//+------------------------------------------------------------------+
//| レンジブレイクガードを監視し、逆方向Limitを退避する関数
//+------------------------------------------------------------------+
void ManageRangeBreakoutLimitGuard(TickContext &ctx)
  {
   if(!input_range_breakout_guard_enabled)
      return;

   ExpireRangeBreakoutLimitGuard();

   int direction = RANGE_BREAKOUT_NONE;
   string reason = "";
   if(AnalyzeRangeBreakoutLimitGuard(ctx, direction, reason))
      ActivateRangeBreakoutLimitGuard(direction, reason);

   if(g_range_breakout_guard_direction == RANGE_BREAKOUT_NONE ||
      g_range_breakout_guard_until <= TimeCurrent())
      return;

   string active_reason = "active " +
                          RangeBreakoutDirectionName(g_range_breakout_guard_direction) +
                          " cooldown until " +
                          TimeToString(g_range_breakout_guard_until, TIME_DATE | TIME_SECONDS);
   CancelRangeBreakoutOppositeLimitOrders(g_range_breakout_guard_direction, active_reason);
  }

//+------------------------------------------------------------------+
//| 新規Limit注文がレンジブレイクガードで停止中か判定する関数
//+------------------------------------------------------------------+
bool IsLimitOrderBlockedByRangeBreakoutGuard(const int orderType, string &reason)
  {
   reason = "";
   if(!input_range_breakout_guard_enabled)
      return false;

   ExpireRangeBreakoutLimitGuard();

   if(g_range_breakout_guard_direction == RANGE_BREAKOUT_NONE ||
      g_range_breakout_guard_until <= TimeCurrent())
      return false;

   bool blocked = ((g_range_breakout_guard_direction == RANGE_BREAKOUT_UP && orderType == 4) ||
                   (g_range_breakout_guard_direction == RANGE_BREAKOUT_DOWN && orderType == 2));
   if(!blocked)
      return false;

   reason = "direction=" + RangeBreakoutDirectionName(g_range_breakout_guard_direction) +
            " until=" + TimeToString(g_range_breakout_guard_until, TIME_DATE | TIME_SECONDS);
   return true;
  }

//+------------------------------------------------------------------+
//| pendingコメントからH1候補時刻を復元する関数
//+------------------------------------------------------------------+
datetime PendingOrderCandidateTime(const string comment)
  {
   int marker = StringFind(comment, "Z");
   if(marker < 0)
      return 0;

   datetime candidate_at = 0;
   string candidate_id = StringSubstr(comment, marker + 1, 12);
   if(!TryParseTargetCandidateTime(candidate_id, candidate_at))
      return 0;

   return candidate_at;
  }

//+------------------------------------------------------------------+
//| 分割slotが既存注文/ポジションに存在するか判定する関数
//+------------------------------------------------------------------+
bool HasExistingSplitSlot(const string slot_key)
  {
   if(slot_key == "")
      return false;

   for(int i = OrdersTotal() - 1; i >= 0; i--)
     {
      ulong ticket = OrderGetTicket(i);
      if(ticket == 0)
         continue;
      if(!OrderSelect(ticket))
         continue;
      if(OrderGetString(ORDER_SYMBOL) != _Symbol)
         continue;
      if((int)OrderGetInteger(ORDER_MAGIC) != magic_number)
         continue;
      if(StringFind(OrderGetString(ORDER_COMMENT), slot_key) >= 0)
         return true;
     }

   for(int i = PositionsTotal() - 1; i >= 0; i--)
     {
      string symbol = PositionGetSymbol(i);
      if(symbol == "")
         continue;
      if(symbol != _Symbol)
         continue;
      if((int)PositionGetInteger(POSITION_MAGIC) != magic_number)
         continue;
      if(StringFind(PositionGetString(POSITION_COMMENT), slot_key) >= 0)
         return true;
     }

   return false;
  }

//+------------------------------------------------------------------+
//| 古い分割pending注文を取消する関数
//+------------------------------------------------------------------+
bool CancelStaleSplitPendingOrders(const string current_candidate_id)
  {
   bool result = false;
   bool keep_current_candidate = (current_candidate_id != "" && current_candidate_id != "0");
   CleanupPendingOrderCancelAttempts();

   for(int i = OrdersTotal() - 1; i >= 0; i--)
     {
      ulong ticket = OrderGetTicket(i);
      if(ticket == 0)
         continue;
      if(!OrderSelect(ticket))
         continue;
      if(OrderGetString(ORDER_SYMBOL) != _Symbol)
         continue;
      if((int)OrderGetInteger(ORDER_MAGIC) != magic_number)
         continue;

      string comment = OrderGetString(ORDER_COMMENT);
      if(!IsSplitOrderComment(comment))
         continue;
      if(keep_current_candidate && IsCurrentSplitCandidateComment(comment, current_candidate_id))
         continue;

      if(TryCancelPendingOrder(ticket, "stale split comment=" + comment))
         result = true;
     }

   return result;
  }


//+------------------------------------------------------------------+
//| 時間が経過したエントリー注文をキャンセルする関数
//+------------------------------------------------------------------+
/**
 * @brief 実時間でENTRY_H1_LIMIT時間を超えた未約定注文をキャンセルします。
 *
 * @return 1件以上キャンセルに成功した場合はtrue。
 *
 * 対象は`_Symbol` と `magic_number` が一致する未約定注文のみです。
 */
bool CancelExpiredOrders()
  {
   bool result = false;
   CleanupPendingOrderCancelAttempts();

// 未決済注文の数を取得
   for(int i = OrdersTotal() - 1; i >= 0; i--)
     {
      ulong ticket = OrderGetTicket(i);
      if(OrderSelect(ticket)) // 注文を選択
        {
         if(OrderGetString(ORDER_SYMBOL) != _Symbol)
            continue;
         if(OrderGetInteger(ORDER_MAGIC) != magic_number)
            continue;

         datetime open_time = (datetime)OrderGetInteger(ORDER_TIME_SETUP);
         datetime reference_time = PendingOrderCandidateTime(OrderGetString(ORDER_COMMENT));
         if(reference_time <= 0)
            reference_time = open_time;

         int expiration_seconds = ENTRY_H1_LIMIT * PeriodSeconds(PERIOD_H1);
         if(reference_time <= 0 || expiration_seconds <= 0)
            continue;

         if(TimeCurrent() - reference_time >= expiration_seconds)
           {
            if(TryCancelPendingOrder(ticket, "H1 candidate expired"))
               result = true;
           }
        }
     }
   return result;
  }
#endif