mql5/Experts/Advisors/Modules/RiskManager.mqh

<EFBFBD><EFBFBD> //+------------------------------------------------------------------+
//|                        RiskManager.mqh                           |
//|                    Risk Management Module 2.1                    |
//|                Fixed: Lot size calculation accuracy              |
//+------------------------------------------------------------------+
#ifndef RISK_MANAGER_MQH
#define RISK_MANAGER_MQH

#include "DataTypes.mqh"
#include <Trade/Trade.mqh>
#include <Trade/SymbolInfo.mqh>

//+------------------------------------------------------------------+
//| Risk Manager Class                                               |
//+------------------------------------------------------------------+
class CRiskManager
{
private:
   //--- Configuration
   RiskManagerConfig    m_config;
   
   //--- Market info
   CSymbolInfo          m_symbol;
   MarketConditions     m_market_conditions;
   
   //--- Risk tracking
   double               m_daily_loss;
   double               m_daily_profit;
   datetime             m_last_reset;
   double               m_current_exposure;
   double               m_max_daily_loss;
   
   //--- Kelly Criterion tracking
   double               m_kelly_wins[100];
   double               m_kelly_losses[100];
   int                  m_kelly_win_count;
   int                  m_kelly_loss_count;
   double               m_kelly_optimal;
   
   //--- Helper methods
   double               CalculateKellyFraction();
   double               GetAccountRiskAmount();
   double               CalculateVolatilityAdjustment();
   bool                 ValidateRiskLimits(double risk_amount);
   double               GetMinStopDistance();
   double               GetSymbolMinLot();
   double               GetSymbolMaxLot();
   double               GetSymbolLotStep();
   
public:
                        CRiskManager();
                       ~CRiskManager();
   
   //--- Initialization
   bool                 Initialize(const RiskManagerConfig &config);
   
   //--- Position sizing
   double               CalculatePositionSize(double stop_distance, 
                                            double risk_override = 0);
   double               CalculateLotSize(double risk_amount, double stop_distance_price);
   
   //--- Risk validation
   bool                 ValidateNewPosition(double lot_size, double stop_distance);
   bool                 ValidateAndAdjustRisk(ManagedTrade &trade);
   bool                 CheckDailyDrawdown();
   bool                 CheckMaxExposure();
   
   //--- External trade management  
   void                 EnforceRiskRules(ManagedTrade &trade, 
                                       double default_risk_percent,
                                       bool close_excessive);
   double               CalculateTradeRisk(const ManagedTrade &trade);
   
   //--- Risk metrics
   double               GetCurrentExposure();
   double               GetDailyPnL();
   ENUM_RISK_LEVEL      GetCurrentRiskLevel();
   double               GetRiskCapacity();
   
   //--- Updates
   void                 UpdateMarketConditions(const MarketConditions &conditions);
   void                 UpdateKellyData(double profit);
   void                 ResetDailyMetrics();
   
   //--- Getters
   double               GetOptimalKelly() { return m_kelly_optimal; }
   double               GetMaxDailyLoss() { return m_max_daily_loss; }
};

//+------------------------------------------------------------------+
//| Constructor                                                      |
//+------------------------------------------------------------------+
CRiskManager::CRiskManager()
{
   m_daily_loss = 0;
   m_daily_profit = 0;
   m_last_reset = 0;
   m_current_exposure = 0;
   m_max_daily_loss = 0;
   m_kelly_win_count = 0;
   m_kelly_loss_count = 0;
   m_kelly_optimal = 0;
}

//+------------------------------------------------------------------+
//| Destructor                                                       |
//+------------------------------------------------------------------+
CRiskManager::~CRiskManager()
{
}

//+------------------------------------------------------------------+
//| Initialize risk manager                                          |
//+------------------------------------------------------------------+
bool CRiskManager::Initialize(const RiskManagerConfig &config)
{
   m_config = config;
   
   //--- Initialize symbol info
   if(!m_symbol.Name(_Symbol))
   {
      Print("RiskManager: Failed to initialize symbol info");
      return false;
   }
   
   //--- Calculate max daily loss in account currency
   double balance = AccountInfoDouble(ACCOUNT_BALANCE);
   m_max_daily_loss = balance * (m_config.max_daily_dd / 100.0);
   
   //--- Reset daily metrics
   ResetDailyMetrics();
   
   Print("RiskManager initialized: Risk=", m_config.risk_percent, 
         "%, MaxDD=", m_config.max_daily_dd, "%");
         
   return true;
}

//+---------------------------------------------------------------------------------+
//| Calculate position size based on stop distance                                  |
//Fix 2: Position Sizing Issues (RiskManager.mqh)                                   |
//Fix 3: Improve Lot Size Calculation (RiskManager.mqh)                             |
//Let's add better error handling and logging to the position sizing calculation    |
//Let's also improve the lot size calculation to handle edge cases better           |      |
//+---------------------------------------------------------------------------------+
double CRiskManager::CalculatePositionSize(double stop_distance, double risk_override)
{
   //--- Check daily drawdown limit
   if(!CheckDailyDrawdown())
   {
      Print("RiskManager: Daily drawdown limit reached");
      return 0;
   }
   
   //--- Validate stop distance
   if(stop_distance <= 0)
   {
      Print("RiskManager: Invalid stop distance: ", stop_distance);
      Print("RiskManager: Stop distance must be greater than 0");
      return 0;
   }
   
   //--- Get risk amount
   double risk_percent = (risk_override > 0) ? risk_override : m_config.risk_percent;
   double account_balance = GetAccountRiskAmount();
   double risk_amount = account_balance * (risk_percent / 100.0);
   
   Print("RiskManager: Balance=", account_balance, ", Risk%=", risk_percent, 
         ", RiskAmount=", risk_amount, ", StopDistance=", stop_distance/_Point, " points");
   
   //--- Apply Kelly Criterion if enabled
   if(m_config.use_kelly)
   {
      double kelly_fraction = CalculateKellyFraction();
      risk_amount *= kelly_fraction;
      Print("RiskManager: Kelly fraction = ", kelly_fraction);
   }
   
   //--- Apply volatility adjustment
   if(m_config.sizing_mode == PS_ATR_BASED)
   {
      double vol_adjustment = CalculateVolatilityAdjustment();
      risk_amount *= vol_adjustment;
      Print("RiskManager: Volatility adjustment = ", vol_adjustment);
   }
   
   //--- Validate risk limits
   if(!ValidateRiskLimits(risk_amount))
   {
      risk_amount = account_balance * (m_config.max_risk_percent / 100.0);
      Print("RiskManager: Risk amount adjusted to max allowed: ", risk_amount);
   }
   
   //--- Calculate lot size
   double lot_size = CalculateLotSize(risk_amount, stop_distance);
   Print("RiskManager: Raw lot size calculated: ", lot_size);
   
   //--- Safety check for unreasonable lot sizes
   if(lot_size > 1000.0)
   {
      Print("RiskManager: ERROR - Calculated lot size unreasonably high: ", lot_size);
      Print("RiskManager: Check your broker's contract specifications");
      return 0;
   }
   
   //--- Get symbol limits
   double min_lot = GetSymbolMinLot();
   double max_lot = GetSymbolMaxLot();
   double lot_step = GetSymbolLotStep();
   
   Print("RiskManager: Symbol limits - MinLot=", min_lot, ", MaxLot=", max_lot, 
         ", LotStep=", lot_step);
   
   //--- Check if calculated lot is too small
   if(lot_size < min_lot)
   {
      Print("RiskManager: Calculated lot ", lot_size, " below minimum ", min_lot);
      
      // Calculate required balance for minimum lot
      double required_balance = (min_lot * stop_distance * m_symbol.TickValue() * m_symbol.Point()) 
                               / (risk_percent / 100.0);
      Print("RiskManager: Required balance for min lot: ", required_balance);
      
      // If account is too small, return 0
      if(account_balance < required_balance * 0.5) // 50% safety margin
      {
         Print("RiskManager: Account too small for minimum position size");
         return 0;
      }
      
      // Otherwise use minimum lot
      lot_size = min_lot;
   }
   
   //--- Apply maximum limit from configuration
   lot_size = MathMin(lot_size, m_config.max_lot_size);
   
   //--- Apply symbol maximum limit
   lot_size = MathMin(lot_size, max_lot);
   
   //--- Round to lot step
   lot_size = MathFloor(lot_size / lot_step) * lot_step;
   lot_size = NormalizeDouble(lot_size, 2);
   
   //--- Final check against configured limits
   if(lot_size < m_config.min_lot_size)
   {
      Print("RiskManager: Lot size ", lot_size, " below configured minimum ", m_config.min_lot_size);
      return 0;
   }
   
   //--- ' FIXED: Return the calculated lot size
   Print("RiskManager: Final lot size: ", lot_size);
   return lot_size;
}
//+------------------------------------------------------------------+
//| Calculate lot size from risk amount and stop distance            |
//+------------------------------------------------------------------+
double CRiskManager::CalculateLotSize(double risk_amount, double stop_distance_price)
{
   if(stop_distance_price <= 0) return 0;
   
   // Method 1: Using tick calculations (more accurate)
   double tick_value = SymbolInfoDouble(_Symbol, SYMBOL_TRADE_TICK_VALUE);
   double tick_size = SymbolInfoDouble(_Symbol, SYMBOL_TRADE_TICK_SIZE);
   double point_size = SymbolInfoDouble(_Symbol, SYMBOL_POINT);
   
   // Convert stop distance from price units to points
   double stop_points = stop_distance_price / point_size;
   
   // Convert points to ticks
   double point_to_tick_ratio = point_size / tick_size;
   double stop_ticks = stop_points * point_to_tick_ratio;
   
   // Calculate the monetary value of the stop loss for 1 lot
   double stop_value_per_lot = stop_ticks * tick_value;
   
   // Calculate required lot size
   double lot_size = risk_amount / stop_value_per_lot;
   
   // Method 2: Simplified calculation (for verification)
   // This uses contract specifications directly
   double contract_size = SymbolInfoDouble(_Symbol, SYMBOL_TRADE_CONTRACT_SIZE);
   string profit_currency = SymbolInfoString(_Symbol, SYMBOL_CURRENCY_PROFIT);
   
   // For forex pairs where profit currency is the quote currency
   double lot_size_simple = 0;
   if(profit_currency == AccountInfoString(ACCOUNT_CURRENCY))
   {
      // Direct calculation for pairs like EURUSD (USD account)
      lot_size_simple = risk_amount / (stop_distance_price * contract_size);
   }
   else
   {
      // For cross pairs, we'd need currency conversion
      // For now, use the tick-based calculation
      lot_size_simple = lot_size;
   }
   
   // Debug output
   Print("CalculateLotSize Debug:");
   Print("  Risk Amount: ", risk_amount);
   Print("  Stop Distance (price): ", stop_distance_price);
   Print("  Stop Distance (points): ", stop_points);
   Print("  Point Size: ", point_size);
   Print("  Tick Size: ", tick_size);
   Print("  Tick Value: ", tick_value);
   Print("  Contract Size: ", contract_size);
   Print("  Stop Ticks: ", stop_ticks);
   Print("  Stop Value per Lot: ", stop_value_per_lot);
   Print("  Calculated Lot Size (tick method): ", lot_size);
   Print("  Calculated Lot Size (simple method): ", lot_size_simple);
   
   // Use the tick-based calculation as it's more universal
   return lot_size;
}

//+------------------------------------------------------------------+
//| Validate new position against risk limits                        |
//+------------------------------------------------------------------+
bool CRiskManager::ValidateNewPosition(double lot_size, double stop_distance)
{
   //--- Check daily drawdown
   if(!CheckDailyDrawdown())
      return false;
      
   //--- Calculate position risk using the same method as CalculateLotSize
   double tick_value = m_symbol.TickValue();
   double tick_size = m_symbol.TickSize();
   double stop_ticks = stop_distance / tick_size;
   double position_risk = lot_size * stop_ticks * tick_value;


   //--- Check against max risk percent
   double account_balance = AccountInfoDouble(ACCOUNT_BALANCE);
   double risk_percent = (position_risk / account_balance) * 100.0;
   
   if(risk_percent > m_config.max_risk_percent)
   {
      Print("RiskManager: Position risk ", risk_percent, 
            "% exceeds maximum ", m_config.max_risk_percent, "%");
      return false;
   }
   
   //--- Check total exposure
   double new_exposure = m_current_exposure + risk_percent;
   if(new_exposure > m_config.max_exposure)
   {
      Print("RiskManager: Total exposure would be ", new_exposure, 
            "% exceeding limit ", m_config.max_exposure, "%");
      return false;
   }
   
   return true;
}

//+------------------------------------------------------------------+
//| Validate and adjust risk for existing trade                     |
//+------------------------------------------------------------------+
bool CRiskManager::ValidateAndAdjustRisk(ManagedTrade &trade)
{
   //--- Calculate current risk
   trade.risk_amount = CalculateTradeRisk(trade);
   trade.risk_percent = (trade.risk_amount / AccountInfoDouble(ACCOUNT_BALANCE)) * 100.0;
   
   //--- Calculate R-multiple
   if(trade.risk_amount > 0)
   {
      double total_pnl = trade.profit + trade.commission + trade.swap;
      trade.r_multiple = total_pnl / trade.risk_amount;
   }
   
   //--- Update MAE/MFE
   double current_pnl = trade.profit + trade.commission + trade.swap;
   if(current_pnl > trade.mfe)
      trade.mfe = current_pnl;
   if(current_pnl < trade.mae)
      trade.mae = current_pnl;
      
   return true;
}

//+------------------------------------------------------------------+
//| Enforce risk rules on external trades                           |
//+------------------------------------------------------------------+
void CRiskManager::EnforceRiskRules(ManagedTrade &trade, 
                                   double default_risk_percent,
                                   bool close_excessive)
{
   CTrade trade_ops;
   
   //--- Calculate actual risk
   double actual_risk = CalculateTradeRisk(trade);
   double risk_percent = (actual_risk / AccountInfoDouble(ACCOUNT_BALANCE)) * 100.0;
   
   //--- Check if risk exceeds maximum
   if(risk_percent > m_config.max_risk_percent)
   {
      Print("RiskManager: External trade #", trade.ticket, 
            " risk ", risk_percent, "% exceeds max ", m_config.max_risk_percent, "%");
            
      if(close_excessive)
      {
         //--- Close the trade
         trade_ops.PositionClose(trade.ticket);
         Print("RiskManager: Closed excessive risk trade #", trade.ticket);
         return;
      }
   }
   
   //--- If no stop loss, calculate and set one
   if(trade.sl == 0)
   {
      double atr = m_market_conditions.volatility;
      double stop_distance = atr * 2.0; // 2 ATR default
      
      if(trade.type == POSITION_TYPE_BUY)
         trade.sl = trade.open_price - stop_distance;
      else
         trade.sl = trade.open_price + stop_distance;
         
      //--- Ensure minimum stop distance
      double min_stop = GetMinStopDistance();
      double current_price = (trade.type == POSITION_TYPE_BUY) ? 
                            m_symbol.Bid() : m_symbol.Ask();
      double actual_distance = MathAbs(current_price - trade.sl);
      
      if(actual_distance < min_stop)
      {
         if(trade.type == POSITION_TYPE_BUY)
            trade.sl = current_price - min_stop;
         else
            trade.sl = current_price + min_stop;
      }
      
      //--- Modify position
      trade_ops.PositionModify(trade.ticket, trade.sl, trade.tp);
      Print("RiskManager: Set stop loss for trade #", trade.ticket, " at ", trade.sl);
   }
   
   //--- Update trade risk values
   trade.risk_amount = actual_risk;
   trade.risk_percent = risk_percent;
}

//+------------------------------------------------------------------+
//| Calculate trade risk amount                                      |
//+------------------------------------------------------------------+
double CRiskManager::CalculateTradeRisk(const ManagedTrade &trade)
{
   if(trade.sl == 0) return 0;
   
   double stop_distance = MathAbs(trade.open_price - trade.sl);
   double tick_value = m_symbol.TickValue();
   double tick_size = m_symbol.TickSize();
   
   // Convert stop distance to ticks
   double stop_ticks = stop_distance / tick_size;
   
   // Calculate risk amount
   double risk_amount = trade.volume * stop_ticks * tick_value;
   
   return risk_amount;
}

//+------------------------------------------------------------------+
//| Check daily drawdown limit                                       |
//+------------------------------------------------------------------+
bool CRiskManager::CheckDailyDrawdown()
{
   double daily_pnl = GetDailyPnL();
   
   if(daily_pnl < -m_max_daily_loss)
   {
      Print("RiskManager: Daily loss limit reached: ", daily_pnl);
      return false;
   }
   
   return true;
}

//+------------------------------------------------------------------+
//| Check maximum exposure limit                                     |
//+------------------------------------------------------------------+
bool CRiskManager::CheckMaxExposure()
{
   return (m_current_exposure <= m_config.max_exposure);
}

//+------------------------------------------------------------------+
//| Get current total exposure                                       |
//+------------------------------------------------------------------+
double CRiskManager::GetCurrentExposure()
{
   m_current_exposure = 0;
   
   int total = PositionsTotal();
   for(int i = 0; i < total; i++)
   {
      // Use PositionGetSymbol instead of PositionSelectByIndex
      if(PositionGetSymbol(i) == _Symbol)
      {
         if(PositionSelect(_Symbol))
         {
            ManagedTrade temp_trade;
            temp_trade.ticket = PositionGetInteger(POSITION_TICKET);
            temp_trade.open_price = PositionGetDouble(POSITION_PRICE_OPEN);
            temp_trade.sl = PositionGetDouble(POSITION_SL);
            temp_trade.volume = PositionGetDouble(POSITION_VOLUME);
            temp_trade.type = (ENUM_POSITION_TYPE)PositionGetInteger(POSITION_TYPE);
            
            double risk = CalculateTradeRisk(temp_trade);
            m_current_exposure += (risk / AccountInfoDouble(ACCOUNT_BALANCE)) * 100.0;
         }
      }
   }
   
   return m_current_exposure;
}

//+------------------------------------------------------------------+
//| Get daily P&L                                                    |
//+------------------------------------------------------------------+
double CRiskManager::GetDailyPnL()
{
   //--- Check for new day
   MqlDateTime current_time;
   TimeToStruct(TimeCurrent(), current_time);
   MqlDateTime reset_time;
   TimeToStruct(m_last_reset, reset_time);
   
   if(current_time.day != reset_time.day)
   {
      ResetDailyMetrics();
   }
   
   return m_daily_profit - m_daily_loss;
}

//+------------------------------------------------------------------+
//| Get current risk level                                           |
//+------------------------------------------------------------------+
ENUM_RISK_LEVEL CRiskManager::GetCurrentRiskLevel()
{
   double exposure = GetCurrentExposure();
   double daily_loss_percent = (m_daily_loss / AccountInfoDouble(ACCOUNT_BALANCE)) * 100.0;
   
   //--- Critical risk
   if(daily_loss_percent > m_config.max_daily_dd * 0.8 || 
      exposure > m_config.max_exposure * 0.9)
      return RISK_CRITICAL;
      
   //--- Extreme risk
   if(daily_loss_percent > m_config.max_daily_dd * 0.6 || 
      exposure > m_config.max_exposure * 0.7)
      return RISK_EXTREME;
      
   //--- High risk
   if(daily_loss_percent > m_config.max_daily_dd * 0.4 || 
      exposure > m_config.max_exposure * 0.5)
      return RISK_HIGH;
      
   //--- Medium risk
   if(daily_loss_percent > m_config.max_daily_dd * 0.2 || 
      exposure > m_config.max_exposure * 0.3)
      return RISK_MEDIUM;
      
   return RISK_LOW;
}

//+------------------------------------------------------------------+
//| Get risk capacity (how much more risk can be taken)             |
//+------------------------------------------------------------------+
double CRiskManager::GetRiskCapacity()
{
   double daily_remaining = m_max_daily_loss - MathAbs(MathMin(GetDailyPnL(), 0));
   double exposure_remaining = m_config.max_exposure - GetCurrentExposure();
   
   //--- Return the more restrictive limit
   double daily_capacity = (daily_remaining / AccountInfoDouble(ACCOUNT_BALANCE)) * 100.0;
   
   return MathMin(daily_capacity, exposure_remaining);
}

//+------------------------------------------------------------------+
//| Update market conditions                                         |
//+------------------------------------------------------------------+
void CRiskManager::UpdateMarketConditions(const MarketConditions &conditions)
{
   m_market_conditions = conditions;
}

//+------------------------------------------------------------------+
//| Update Kelly criterion data                                      |
//+------------------------------------------------------------------+
void CRiskManager::UpdateKellyData(double profit)
{
   if(profit > 0)
   {
      if(m_kelly_win_count < 100)
      {
         m_kelly_wins[m_kelly_win_count] = profit;
         m_kelly_win_count++;
      }
   }
   else if(profit < 0)
   {
      if(m_kelly_loss_count < 100)
      {
         m_kelly_losses[m_kelly_loss_count] = MathAbs(profit);
         m_kelly_loss_count++;
      }
   }
   
   //--- Recalculate Kelly fraction
   m_kelly_optimal = CalculateKellyFraction();
}

//+------------------------------------------------------------------+
//| Calculate Kelly fraction                                         |
//+------------------------------------------------------------------+
double CRiskManager::CalculateKellyFraction()
{
   if(m_kelly_win_count < 10 || m_kelly_loss_count < 10)
      return m_config.kelly_fraction; // Use default until enough data
      
   //--- Calculate win probability
   double win_prob = (double)m_kelly_win_count / (m_kelly_win_count + m_kelly_loss_count);
   
   //--- Calculate average win/loss
   double avg_win = 0, avg_loss = 0;
   
   for(int i = 0; i < m_kelly_win_count; i++)
      avg_win += m_kelly_wins[i];
   avg_win /= m_kelly_win_count;
   
   for(int i = 0; i < m_kelly_loss_count; i++)
      avg_loss += m_kelly_losses[i];
   avg_loss /= m_kelly_loss_count;
   
   //--- Kelly formula: f = (p*b - q) / b
   //--- where p = win prob, q = loss prob, b = win/loss ratio
   double b = avg_win / avg_loss;
   double q = 1 - win_prob;
   double kelly = (win_prob * b - q) / b;
   
   //--- Apply safety factor
   kelly *= m_config.kelly_fraction;
   
   //--- Ensure reasonable bounds
   kelly = MathMax(kelly, 0.01);  // Minimum 1%
   kelly = MathMin(kelly, 0.25);  // Maximum 25%
   
   return kelly;
}

//+------------------------------------------------------------------+
//| Calculate volatility adjustment factor                           |
//+------------------------------------------------------------------+
double CRiskManager::CalculateVolatilityAdjustment()
{
   if(m_market_conditions.volatility <= 0)
      return 1.0;
      
   //--- Get historical average volatility (simplified)
   double avg_volatility = iATR(_Symbol, PERIOD_D1, 20);
   
   if(avg_volatility <= 0)
      return 1.0;
      
   //--- Reduce size in high volatility, increase in low volatility
   double vol_ratio = avg_volatility / m_market_conditions.volatility;
   
   //--- Apply bounds
   vol_ratio = MathMax(vol_ratio, 0.5);  // Minimum 50% size
   vol_ratio = MathMin(vol_ratio, 1.5);  // Maximum 150% size
   
   return vol_ratio;
}

//+------------------------------------------------------------------+
//| Get account risk amount (considers balance/equity)               |
//+------------------------------------------------------------------+
double CRiskManager::GetAccountRiskAmount()
{
   double balance = AccountInfoDouble(ACCOUNT_BALANCE);
   double equity = AccountInfoDouble(ACCOUNT_EQUITY);
   
   //--- Use the lower of balance or equity for safety
   return MathMin(balance, equity);
}

//+------------------------------------------------------------------+
//| Validate risk limits                                             |
//+------------------------------------------------------------------+
bool CRiskManager::ValidateRiskLimits(double risk_amount)
{
   double account_value = GetAccountRiskAmount();
   double risk_percent = (risk_amount / account_value) * 100.0;
   
   return (risk_percent <= m_config.max_risk_percent);
}

//+------------------------------------------------------------------+
//| Get minimum stop distance                                        |
//+------------------------------------------------------------------+
double CRiskManager::GetMinStopDistance()
{
   int stops_level = (int)m_symbol.StopsLevel();
   double min_stop = stops_level * m_symbol.Point();
   
   //--- Add buffer for safety
   return min_stop * 1.1;
}

//+------------------------------------------------------------------+
//| Get symbol minimum lot                                           |
//+------------------------------------------------------------------+
double CRiskManager::GetSymbolMinLot()
{
   return m_symbol.LotsMin();
}

//+------------------------------------------------------------------+
//| Get symbol maximum lot                                           |
//+------------------------------------------------------------------+
double CRiskManager::GetSymbolMaxLot()
{
   return m_symbol.LotsMax();
}

//+------------------------------------------------------------------+
//| Get symbol lot step                                              |
//+------------------------------------------------------------------+
double CRiskManager::GetSymbolLotStep()
{
   return m_symbol.LotsStep();
}

//+------------------------------------------------------------------+
//| Reset daily metrics                                              |
//+------------------------------------------------------------------+
void CRiskManager::ResetDailyMetrics()
{
   m_daily_loss = 0;
   m_daily_profit = 0;
   m_last_reset = TimeCurrent();
   
   //--- Recalculate max daily loss based on current balance
   double balance = AccountInfoDouble(ACCOUNT_BALANCE);
   m_max_daily_loss = balance * (m_config.max_daily_dd / 100.0);
}

#endif // RISK_MANAGER_MQH
//+------------------------------------------------------------------+