//+------------------------------------------------------------------+
//|                                                       Expert.mqh |
//|                             Copyright 2000-2023, MetaQuotes Ltd. |
//|                                             https://www.mql5.com |
//+------------------------------------------------------------------+
#include <Expert\Expert.mqh>
#include "ExpertSignalCustom.mqh"
#include "..\System\TradeChecks.mqh"
//--- Article 2555 #16: a soft budget for one OnTick() pass, in microseconds. The article's own
//--- yardstick is that the FIRST (heaviest) calculation over 10+ years of M1 data should stay
//--- under 100 ms; a steady-state tick that regularly costs more than that is starving every other
//--- program sharing this symbol's single terminal thread, so it gets a throttled journal warning
//--- pointing at the MetaEditor profiler. Diagnostic only - it never skips or truncates any work.
#define EXPERT_TICK_BUDGET_US   100000
//--- Article 2555 #16: soft ceiling, in MB, on MQL_MEMORY_USED before a throttled warning is logged.
//--- Sized well above what the largest shipped AI topology needs (3 models x live+shadow net under
//--- HYBRID) so it flags a genuine leak/runaway allocation, not ordinary training memory.
#define EXPERT_MEMORY_SOFT_LIMIT_MB  1024
//+------------------------------------------------------------------+
//| Class CExpert.                                                   |
//| Purpose: Base class expert advisor.                              |
//| Derives from class CExpert.                                      |
//+------------------------------------------------------------------+
class CExpertCustom : public CExpert
  {
protected:
   CExpertSignalCustom* GetCustomSignal()
     {
      return dynamic_cast<CExpertSignalCustom*>(m_signal);
     }
   bool              CloseAndDeleteAllForSymbol(void);
   //--- Article 2555 #7 - SYMBOL_TRADE_FREEZE_LEVEL. While the market sits within freeze-level
   //--- points of a position's SL/TP (or of a pending order's activation price) the server refuses
   //--- to modify, close or delete it, and answering that refusal with a request anyway is exactly
   //--- the error the article says a Market product must never produce. These two report on the
   //--- CURRENTLY SELECTED m_position / m_order, which is the state every caller below runs in.
   bool              SelectedPositionIsFrozen(void);
   bool              SelectedOrderIsFrozen(void);
   //--- Mirrors CExpertTrade::Buy()/Sell()'s price-vs-stops-level routing, so the checks below know
   //--- whether a given entry price is about to become a pending order or a market fill.
   ENUM_ORDER_TYPE   ResolveOrderType(bool isLong, double price);
public:
                     CExpertCustom(void);
                    ~CExpertCustom(void);
   //--- event handlers
   virtual void      OnTick(void) override;
   virtual void      OnTimer(void) override;
   virtual void      OnChartEvent(const int id, const long &lparam, const double &dparam, const string &sparam) override;
   //--- initialization trading objects
   virtual bool      InitSignal(CExpertSignal *signal = NULL) override;
   //--- methods of creating the indicator and timeseries
   virtual bool      SetPriceSeries(CiOpen *open, CiHigh *high, CiLow *low, CiClose *close) override;
   virtual bool      SetOtherSeries(CiSpread *spread, CiTime *time, CiTickVolume *tick_volume, CiRealVolume *real_volume) override;
   //--- initialization trading objects
   virtual bool      InitTrade(ulong magic, CExpertTrade *trade = NULL) override;
protected:
   //--- refreshing
   virtual bool      Refresh(void) override;
   //--- processing (main method)
   virtual bool      Processing(void) override;
   //--- Article 2555 #2/#3/#4/#5/#6 - final gate immediately before the order is sent. Everything
   //--- here was already validated when the setup was shaped (CExpertSignalCustom::OpenParams) and
   //--- when the lot was sized (CExpertMoneyCustom::ValidateLotForTrade), but those ran earlier in
   //--- the tick and the market has moved since: a price that was a legal pending distance then can
   //--- be inside the stops level now. This is the last point at which a bad request can still be
   //--- withheld rather than rejected by the server.
   virtual bool      OpenLong(double price, double sl, double tp) override;
   virtual bool      OpenShort(double price, double sl, double tp) override;
   //--- Article 2555 #7 - never send a close/reverse request for a frozen position.
   virtual bool      CheckClose(void) override;
   virtual bool      CheckReverse(void) override;
   //--- Article 2555 #7/#11 - never send a modification for a frozen position, and never send one
   //--- that changes nothing (TRADE_RETCODE_NO_CHANGES = 10025).
   virtual bool      CheckTrailingStop(void) override;
   virtual bool      TrailingStopLong(double sl, double tp) override;
   virtual bool      TrailingStopShort(double sl, double tp) override;
   //--- Article 2555 #7/#11 - the same two rules for pending orders.
   virtual bool      CheckDeleteOrderLong(void) override;
   virtual bool      CheckDeleteOrderShort(void) override;
   virtual bool      CheckTrailingOrderLong(void) override;
   virtual bool      CheckTrailingOrderShort(void) override;
   virtual bool      TrailingOrderLong(double delta) override;
   virtual bool      TrailingOrderShort(double delta) override;
  };
//+------------------------------------------------------------------+
//| Constructor                                                      |
//+------------------------------------------------------------------+
CExpertCustom::CExpertCustom(void)
  {
  }
//+------------------------------------------------------------------+
//| Destructor                                                       |
//+------------------------------------------------------------------+
CExpertCustom::~CExpertCustom(void)
  {
  }
//+------------------------------------------------------------------+
//| Setting pointers of price timeseries.                            |
//+------------------------------------------------------------------+
bool CExpertCustom::SetPriceSeries(CiOpen *open, CiHigh *high, CiLow *low, CiClose *close) override
  {
//--- check the initialization phase
   if(m_init_phase != INIT_PHASE_VALIDATION)
     {
      return(false);
     }
//--- check pointers
   if((IS_OPEN_SERIES_USAGE  && open == NULL) ||
      (IS_HIGH_SERIES_USAGE  && high == NULL) ||
      (IS_LOW_SERIES_USAGE   && low == NULL)  ||
      (IS_CLOSE_SERIES_USAGE && close == NULL))
     {
      Print(__FUNCTION__ + ": NULL pointer");
      return(false);
     }
   m_open = open;
   m_high = high;
   m_low  = low;
   m_close = close;
//--- ok
   return(true);
  }
//+------------------------------------------------------------------+
//| Setting pointers of other timeseries.                            |
//+------------------------------------------------------------------+
bool CExpertCustom::SetOtherSeries(CiSpread *spread, CiTime *time, CiTickVolume *tick_volume, CiRealVolume *real_volume) override
  {
//--- check the initialization phase
   if(m_init_phase != INIT_PHASE_VALIDATION)
     {
      return(false);
     }
//--- check pointers
   if((IS_SPREAD_SERIES_USAGE && spread == NULL) ||
      (IS_TIME_SERIES_USAGE && time == NULL) ||
      (IS_TICK_VOLUME_SERIES_USAGE && tick_volume == NULL) ||
      (IS_REAL_VOLUME_SERIES_USAGE && real_volume == NULL))
     {
      Print(__FUNCTION__ + ": NULL pointer");
      return(false);
     }
   m_spread     = spread;
   m_time       = time;
   m_tick_volume = tick_volume;
   m_real_volume = real_volume;
//--- ok
   return(true);
  }
//+------------------------------------------------------------------+
//| Initialization signal object                                     |
//+------------------------------------------------------------------+
bool CExpertCustom::InitSignal(CExpertSignal *signal)
  {
   if(m_signal != NULL)
      delete m_signal;
//---
   if(signal == NULL)
     {
      if((m_signal = new CExpertSignalCustom) == NULL)
         return(false);
     }
   else
      m_signal = signal;
//--- initializing signal object
   if(!m_signal.Init(GetPointer(m_symbol), m_period, m_adjusted_point))
      return(false);
   m_signal.EveryTick(m_every_tick);
   m_signal.Magic(m_magic);
//--- ok
   return(true);
  }
//+------------------------------------------------------------------+
//| Refreshing data for processing                                   |
//+------------------------------------------------------------------+
bool CExpertCustom::Refresh(void)
  {
   MqlDateTime time;
//--- Article 2555 #8 - errors caused by insufficient quote history. Everything below this point
//--- (RefreshRates, then every indicator in m_indicators) reads a timeseries that the terminal may
//--- still be downloading: on a symbol/timeframe just switched to, on a thin instrument, or right
//--- after reconnecting, the series reports far fewer bars than the indicators' warm-up needs and
//--- the buffers come back zero-filled rather than empty. Skipping the tick until the series is
//--- synchronised is the article's "check for the required history and request the missing data"
//--- approach - touching the series here is itself what asks the terminal to build it.
   string history_reason;
   if(!TCHasEnoughHistory(m_symbol.Name(), m_period, 2, history_reason))
     {
      TCLog("refresh-history:" + m_symbol.Name(), __FUNCTION__ + ": skipping tick - " + history_reason);
      return(false);
     }
//--- refresh rates
   if(!m_symbol.RefreshRates())
      return(false);
//--- check need processing
   TimeToStruct(m_symbol.Time(), time);
   if(m_period_flags != WRONG_VALUE && m_period_flags != 0)
      if((m_period_flags & TimeframesFlags(time)) == 0)
         return(false);
   m_last_tick_time = time;
//--- refresh indicators
   m_indicators.Refresh();
//--- ok
   return(true);
  }
//+------------------------------------------------------------------+
//| Main function                                                    |
//+------------------------------------------------------------------+
bool CExpertCustom::Processing(void)
  {
//--- calculate signal direction once
   m_signal.SetDirection();
//--- check if open positions
   if(SelectPosition())
     {
      //--- open position is available
      //--- check the possibility of reverse the position
      if(CheckReverse())
         return(true);
      //--- check the possibility of closing the position/delete pending orders
      if(!CheckClose())
        {
         //--- check the possibility of modifying the position
         if(CheckTrailingStop())
            return(true);
         //--- return without operations
         return(false);
        }
     }
//--- check if plased pending orders
   int total = OrdersTotal();
   if(total != 0)
     {
      for(int i = total - 1; i >= 0; i--)
        {
         m_order.SelectByIndex(i);
         if(m_order.Symbol() != m_symbol.Name())
            continue;
         if(m_order.OrderType() == ORDER_TYPE_BUY_LIMIT || m_order.OrderType() == ORDER_TYPE_BUY_STOP)
           {
            //--- check the ability to delete a pending order to buy
            if(CheckDeleteOrderLong())
               return(true);
            //--- check the possibility of modifying a pending order to buy
            if(CheckTrailingOrderLong())
               return(true);
           }
         else
           {
            //--- check the ability to delete a pending order to sell
            if(CheckDeleteOrderShort())
               return(true);
            //--- check the possibility of modifying a pending order to sell
            if(CheckTrailingOrderShort())
               return(true);
           }
         //--- return without operations
         return(false);
        }
     }
//--- check the possibility of opening a position/setting pending order
   if(CheckOpen())
      return(true);
//--- return without operations
   return(false);
  }
//+------------------------------------------------------------------+
//| Article 2555 #7 - is the SELECTED position inside the broker's    |
//| freeze zone? A frozen position cannot be modified or closed.      |
//+------------------------------------------------------------------+
bool CExpertCustom::SelectedPositionIsFrozen(void)
  {
   string reason;
   if(TCFreezeOkForPosition(m_position.Symbol(), (ENUM_POSITION_TYPE)m_position.PositionType(),
                            m_position.StopLoss(), m_position.TakeProfit(), reason))
      return false;
   TCLog("frozen-position:" + m_position.Symbol(), __FUNCTION__ + ": " + reason + " - request withheld");
   return true;
  }
//+------------------------------------------------------------------+
//| Article 2555 #7 - is the SELECTED pending order inside the        |
//| broker's freeze zone? A frozen order cannot be modified or deleted.|
//+------------------------------------------------------------------+
bool CExpertCustom::SelectedOrderIsFrozen(void)
  {
   string reason;
   if(TCFreezeOkForOrder(m_order.Symbol(), (ENUM_ORDER_TYPE)m_order.OrderType(), m_order.PriceOpen(), reason))
      return false;
   TCLog("frozen-order:" + m_order.Symbol(), __FUNCTION__ + ": " + reason + " - request withheld");
   return true;
  }
//+------------------------------------------------------------------+
//| Which order type an entry price will produce - see                |
//| CExpertTrade::Buy()/Sell(), whose routing this reproduces.        |
//+------------------------------------------------------------------+
ENUM_ORDER_TYPE CExpertCustom::ResolveOrderType(bool isLong, double price)
  {
   if(price <= 0.0 || price == EMPTY_VALUE)
      return(isLong ? ORDER_TYPE_BUY : ORDER_TYPE_SELL);
   double stops = TCStopsLevel(m_symbol.Name());
   if(isLong)
     {
      double ask = m_symbol.Ask();
      if(price > ask + stops)
         return(ORDER_TYPE_BUY_STOP);
      if(price < ask - stops)
         return(ORDER_TYPE_BUY_LIMIT);
      return(ORDER_TYPE_BUY);
     }
   double bid = m_symbol.Bid();
   if(price > bid + stops)
      return(ORDER_TYPE_SELL_LIMIT);
   if(price < bid - stops)
      return(ORDER_TYPE_SELL_STOP);
   return(ORDER_TYPE_SELL);
  }
//+------------------------------------------------------------------+
//| Final pre-send gate for a long entry (article #4/#6/#14).         |
//+------------------------------------------------------------------+
bool CExpertCustom::OpenLong(double price, double sl, double tp)
  {
   if(price == EMPTY_VALUE)
      return(false);
   string reason;
//--- #14: symbol-property reads below are meaningless for an unquoted symbol
   if(!TCSymbolIsTradeable(m_symbol.Name(), reason))
     {
      TCLog("open-symbol:" + m_symbol.Name(), __FUNCTION__ + ": withheld - " + reason);
      return(false);
     }
   ENUM_ORDER_TYPE type = ResolveOrderType(true, price);
   if(type != ORDER_TYPE_BUY)
     {
      //--- #4: the account's ACCOUNT_LIMIT_ORDERS cap applies to pending orders only
      if(!TCIsNewOrderAllowed(reason))
        {
         TCLog("open-orderlimit", __FUNCTION__ + ": withheld - " + reason);
         return(false);
        }
      //--- #6: the activation price must still clear the stops level after the price moved
      if(!TCCheckPendingPrice(m_symbol.Name(), type, price, reason))
        {
         TCLog("open-pendingprice:" + m_symbol.Name(), __FUNCTION__ + ": withheld - " + reason);
         return(false);
        }
     }
//--- #6: SL/TP against the stops level, measured from this order type's own reference price
   if(!TCCheckStops(m_symbol.Name(), type, price, sl, tp, reason))
     {
      TCLog("open-stops:" + m_symbol.Name(), __FUNCTION__ + ": withheld - " + reason);
      return(false);
     }
   return(CExpert::OpenLong(price, sl, tp));
  }
//+------------------------------------------------------------------+
//| Final pre-send gate for a short entry (article #4/#6/#14).        |
//+------------------------------------------------------------------+
bool CExpertCustom::OpenShort(double price, double sl, double tp)
  {
   if(price == EMPTY_VALUE)
      return(false);
   string reason;
   if(!TCSymbolIsTradeable(m_symbol.Name(), reason))
     {
      TCLog("open-symbol:" + m_symbol.Name(), __FUNCTION__ + ": withheld - " + reason);
      return(false);
     }
   ENUM_ORDER_TYPE type = ResolveOrderType(false, price);
   if(type != ORDER_TYPE_SELL)
     {
      if(!TCIsNewOrderAllowed(reason))
        {
         TCLog("open-orderlimit", __FUNCTION__ + ": withheld - " + reason);
         return(false);
        }
      if(!TCCheckPendingPrice(m_symbol.Name(), type, price, reason))
        {
         TCLog("open-pendingprice:" + m_symbol.Name(), __FUNCTION__ + ": withheld - " + reason);
         return(false);
        }
     }
   if(!TCCheckStops(m_symbol.Name(), type, price, sl, tp, reason))
     {
      TCLog("open-stops:" + m_symbol.Name(), __FUNCTION__ + ": withheld - " + reason);
      return(false);
     }
   return(CExpert::OpenShort(price, sl, tp));
  }
//+------------------------------------------------------------------+
//| Article #7 - do not attempt to close a frozen position.           |
//+------------------------------------------------------------------+
bool CExpertCustom::CheckClose(void)
  {
   if(SelectedPositionIsFrozen())
      return(false);
   return(CExpert::CheckClose());
  }
//+------------------------------------------------------------------+
//| Article #7 - a reverse closes the open position first, so the     |
//| same freeze restriction applies to it.                            |
//+------------------------------------------------------------------+
bool CExpertCustom::CheckReverse(void)
  {
   if(SelectedPositionIsFrozen())
      return(false);
   return(CExpert::CheckReverse());
  }
//+------------------------------------------------------------------+
//| Article #7 - do not attempt to modify a frozen position.          |
//+------------------------------------------------------------------+
bool CExpertCustom::CheckTrailingStop(void)
  {
   if(SelectedPositionIsFrozen())
      return(false);
   return(CExpert::CheckTrailingStop());
  }
//+------------------------------------------------------------------+
//| Article #11 - a PositionModify() that changes nothing is an error |
//| (TRADE_RETCODE_NO_CHANGES = 10025). CExpert's own caller compares |
//| the new levels for EXACT equality, which a recomputed double can  |
//| miss by one ulp and still be "no change" to the server; compare   |
//| with the article's one-point tolerance instead.                   |
//+------------------------------------------------------------------+
bool CExpertCustom::TrailingStopLong(double sl, double tp)
  {
   if(!TCPositionModifyIsMeaningful(m_position.Symbol(), m_position.StopLoss(), sl, m_position.TakeProfit(), tp))
      return(false);
//--- the new levels are themselves subject to the stops level (article #6)
   string reason;
   if(!TCCheckStops(m_position.Symbol(), ORDER_TYPE_BUY, 0.0, sl, tp, reason))
     {
      TCLog("trail-stops-long:" + m_position.Symbol(), __FUNCTION__ + ": withheld - " + reason);
      return(false);
     }
   return(CExpert::TrailingStopLong(sl, tp));
  }
//+------------------------------------------------------------------+
//| See TrailingStopLong() - same two rules for a short position.     |
//+------------------------------------------------------------------+
bool CExpertCustom::TrailingStopShort(double sl, double tp)
  {
   if(!TCPositionModifyIsMeaningful(m_position.Symbol(), m_position.StopLoss(), sl, m_position.TakeProfit(), tp))
      return(false);
   string reason;
   if(!TCCheckStops(m_position.Symbol(), ORDER_TYPE_SELL, 0.0, sl, tp, reason))
     {
      TCLog("trail-stops-short:" + m_position.Symbol(), __FUNCTION__ + ": withheld - " + reason);
      return(false);
     }
   return(CExpert::TrailingStopShort(sl, tp));
  }
//+------------------------------------------------------------------+
//| Article #7 - a pending order inside the freeze zone cannot be     |
//| deleted; withhold the request instead of having it rejected.      |
//+------------------------------------------------------------------+
bool CExpertCustom::CheckDeleteOrderLong(void)
  {
   if(SelectedOrderIsFrozen())
      return(false);
   return(CExpert::CheckDeleteOrderLong());
  }
bool CExpertCustom::CheckDeleteOrderShort(void)
  {
   if(SelectedOrderIsFrozen())
      return(false);
   return(CExpert::CheckDeleteOrderShort());
  }
//+------------------------------------------------------------------+
//| Article #7 - nor can it be modified.                              |
//+------------------------------------------------------------------+
bool CExpertCustom::CheckTrailingOrderLong(void)
  {
   if(SelectedOrderIsFrozen())
      return(false);
   return(CExpert::CheckTrailingOrderLong());
  }
bool CExpertCustom::CheckTrailingOrderShort(void)
  {
   if(SelectedOrderIsFrozen())
      return(false);
   return(CExpert::CheckTrailingOrderShort());
  }
//+------------------------------------------------------------------+
//| Article #6/#11 - the shifted order must still change something,   |
//| and its new activation price plus SL/TP must clear the stops      |
//| level. CExpert::TrailingOrder*() shifts price, sl and tp by the   |
//| same delta and sends the modification unconditionally, so a       |
//| delta of 0 (or one that walks the order inside the stops level)   |
//| produced a guaranteed-rejected request.                           |
//+------------------------------------------------------------------+
bool CExpertCustom::TrailingOrderLong(double delta)
  {
   string          symbol = m_order.Symbol();
   ENUM_ORDER_TYPE type   = (ENUM_ORDER_TYPE)m_order.OrderType();
   double          price  = m_symbol.NormalizePrice(m_order.PriceOpen() - delta);
   double          sl     = m_symbol.NormalizePrice(m_order.StopLoss() - delta);
   double          tp     = m_symbol.NormalizePrice(m_order.TakeProfit() - delta);
   if(!TCOrderModifyIsMeaningful(symbol, m_order.PriceOpen(), price, m_order.StopLoss(), sl, m_order.TakeProfit(), tp))
      return(false);
   string reason;
   if(!TCCheckPendingPrice(symbol, type, price, reason) || !TCCheckStops(symbol, type, price, sl, tp, reason))
     {
      TCLog("trail-order-long:" + symbol, __FUNCTION__ + ": withheld - " + reason);
      return(false);
     }
   return(CExpert::TrailingOrderLong(delta));
  }
bool CExpertCustom::TrailingOrderShort(double delta)
  {
   string          symbol = m_order.Symbol();
   ENUM_ORDER_TYPE type   = (ENUM_ORDER_TYPE)m_order.OrderType();
   double          price  = m_symbol.NormalizePrice(m_order.PriceOpen() - delta);
   double          sl     = m_symbol.NormalizePrice(m_order.StopLoss() - delta);
   double          tp     = m_symbol.NormalizePrice(m_order.TakeProfit() - delta);
   if(!TCOrderModifyIsMeaningful(symbol, m_order.PriceOpen(), price, m_order.StopLoss(), sl, m_order.TakeProfit(), tp))
      return(false);
   string reason;
   if(!TCCheckPendingPrice(symbol, type, price, reason) || !TCCheckStops(symbol, type, price, sl, tp, reason))
     {
      TCLog("trail-order-short:" + symbol, __FUNCTION__ + ": withheld - " + reason);
      return(false);
     }
   return(CExpert::TrailingOrderShort(delta));
  }
//+------------------------------------------------------------------+
//| OnTick handler                                                   |
//+------------------------------------------------------------------+
void CExpertCustom::OnTick(void)
  {
//--- check process flag
   if(!m_on_tick_process)
      return;
//--- Article 2555 #16 - measure the tick with GetMicrosecondCount() and report (throttled) when it
//--- overruns EXPERT_TICK_BUDGET_US. Purely diagnostic; see the macro's comment.
   ulong tick_started_us = TCNow();
//--- close positions and orders at specified time
   if(targetDayOfWeek != -1 && targetMinutes != -1 && targetHour != -1)
     {
      // Buffer in minutes for checking the condition
      int bufferMinutes = 1; // ±1 minute buffer
      // Get current server time
      datetime currentTimeValue = TimeCurrent();
      MqlDateTime currentTime;
      TimeToStruct(currentTimeValue, currentTime); // Convert to MqlDateTime
      // Extract the current hour and minute
      int currentHour = currentTime.hour;
      int currentMinute = currentTime.min;
      // Check if the current day matches the target day
      if(currentTime.day_of_week == targetDayOfWeek || targetDayOfWeek == CLOSE_EVERYDAY)
        {
         // Check if the current time is within the buffer range around the target time
         if(currentHour == targetHour)
           {
            // Check if the current minute falls within the ±1 minute buffer of the target minute
            if(currentMinute >= (targetMinutes - bufferMinutes) && currentMinute <= (targetMinutes + bufferMinutes))
              {
               // If it matches, call CloseAndDeleteAllForSymbol
               if(CloseAndDeleteAllForSymbol())
                 {
                  // Log or handle the successful close
                  Print("Positions and orders closed.");
                 }
              }
           }
        }
     }
   CExpertSignalCustom* customSignal = GetCustomSignal();
   if(customSignal != NULL)
      customSignal.OnTickHandler();
   //--- updated quotes and indicators
   if(!Refresh())
     {
      if(VerboseMode)
         TCWarnIfSlow("CExpertCustom::OnTick", tick_started_us, EXPERT_TICK_BUDGET_US);
      return;
     }
//--- expert processing
   Processing();
   if(VerboseMode)
      TCWarnIfSlow("CExpertCustom::OnTick", tick_started_us, EXPERT_TICK_BUDGET_US);
  }
//+------------------------------------------------------------------+
//| OnChartEvent handler                                             |
//+------------------------------------------------------------------+
void CExpertCustom::OnChartEvent(const int id, const long &lparam, const double &dparam, const string &sparam)
  {
//--- check process flag
   if(!m_on_chart_event_process)
      return;
   CExpertSignalCustom* customSignal = GetCustomSignal();
   if(customSignal != NULL)
      customSignal.OnChartEventHandler(id, lparam, dparam, sparam);
  }
//+------------------------------------------------------------------+
//| Close all positions and delete all pending orders for Symbol()  |
//+------------------------------------------------------------------+
bool CExpertCustom::CloseAndDeleteAllForSymbol()
  {
   bool   result = false; // Track if any action was successfully performed
   string symbol = m_symbol.Name();
   string reason;
// Iterate through all positions. The symbol/magic filter is read off the TICKET being closed:
// PositionSelect(_Symbol) selects "some position on the chart symbol" and says nothing about
// positionTicket, so the guard it used to stand in for let this close every position on the
// account - including other symbols' and other EAs' - the moment the chart symbol happened to
// hold one. Same for the order loop below, whose OrderSelect() succeeded for any ticket at all.
   for(int i = PositionsTotal() - 1; i >= 0; i--)
     {
      ulong positionTicket = PositionGetTicket(i);
      if(positionTicket == 0 || !PositionSelectByTicket(positionTicket))
         continue;
      if(PositionGetString(POSITION_SYMBOL) != symbol)
         continue;
      if(PositionGetInteger(POSITION_MAGIC) != (long)m_magic)
         continue;
      //--- article 2555 #7: a frozen position cannot be closed; retry on the next timer/tick pass
      if(!TCFreezeOkForPosition(symbol, (ENUM_POSITION_TYPE)PositionGetInteger(POSITION_TYPE),
                                PositionGetDouble(POSITION_SL), PositionGetDouble(POSITION_TP), reason))
        {
         TCLog("closeall-frozen-position:" + symbol, __FUNCTION__ + ": " + reason + " - close deferred");
         continue;
        }
      if(m_trade.PositionClose(positionTicket))
         result = true;
     }
// Iterate through all pending orders
   for(int j = OrdersTotal() - 1; j >= 0; j--)
     {
      ulong orderTicket = OrderGetTicket(j);
      if(orderTicket == 0)
         continue;
      if(OrderGetString(ORDER_SYMBOL) != symbol)
         continue;
      if(OrderGetInteger(ORDER_MAGIC) != (long)m_magic)
         continue;
      //--- article 2555 #7: nor can a frozen pending order be deleted
      if(!TCFreezeOkForOrder(symbol, (ENUM_ORDER_TYPE)OrderGetInteger(ORDER_TYPE),
                             OrderGetDouble(ORDER_PRICE_OPEN), reason))
        {
         TCLog("closeall-frozen-order:" + symbol, __FUNCTION__ + ": " + reason + " - delete deferred");
         continue;
        }
      if(m_trade.OrderDelete(orderTicket))
         result = true;
     }
   return result; // Return true if any action was performed, false otherwise
  }
//+------------------------------------------------------------------+
//| OnTimer handler                                                  |
//+------------------------------------------------------------------+
void CExpertCustom::OnTimer(void)
  {
//--- check process flag
   if(!m_on_timer_process)
      return;
//--- Article 2555 #16 - keep an eye on the memory the program holds. The AI signals allocate the
//--- bulk of it (network weights, replay buffers), so the timer - not the tick - is the right place
//--- to sample it. Throttled and diagnostic only; nothing is freed or truncated on the back of it.
   if(VerboseMode)
      TCWarnIfMemoryAbove(EXPERT_MEMORY_SOFT_LIMIT_MB);
   CExpertSignalCustom* customSignal = GetCustomSignal();
   if(customSignal == NULL)
      return;
   if(!dbm.OpenDatabase())
     {
      Print(__FUNCTION__ + ": Failed to open database, skipping this timer cycle's signal processing/weight update.");
      return;
     }
   customSignal.ProcessBufferedSignals();
   if(!customSignal.UpdateSignalsWeights())
      Print(__FUNCTION__ + ": UpdateSignalsWeights failed, DB-derived filter weights not refreshed this cycle.");
   // This function owns the connection it opened above - ProcessBufferedSignals() deliberately
   // leaves it open so UpdateSignalsWeights() can reuse the same handle.
   if(!IsBacktesting)
      dbm.CloseDatabase();
  }
//+------------------------------------------------------------------+
//| Initialization trade object                                      |
//+------------------------------------------------------------------+
bool CExpertCustom::InitTrade(ulong magic, CExpertTrade *trade = NULL)
  {
   if(m_trade != NULL)
      delete m_trade;
//---
   if(trade == NULL)
     {
      if((m_trade = new CExpertTrade) == NULL)
         return(false);
     }
   else
      m_trade = trade;
//--- tune trade object
   m_trade.SetSymbol(GetPointer(m_symbol));
   m_trade.SetExpertMagicNumber(magic);
   m_trade.SetMarginMode();
   m_trade.SetAsyncMode(true);
//--- set default deviation for trading in adjusted points
   m_trade.SetDeviationInPoints((ulong)(3 * m_adjusted_point / m_symbol.Point()));
//--- ok
   return(true);
  }
//+------------------------------------------------------------------+