#property copyright "Copyright 2024, MetaQuotes Ltd."
#property link      "https://www.mql5.com"
#property version   "1.00"

#include <Trade/Trade.mqh>

CTrade           trade;
CPositionInfo    pos;
COrderInfo       ord;
//+------------------------------------------------------------------+
//| Expert initialization function                                   |
//+------------------------------------------------------------------+

   input group "*** Trading Inputs ***"
   
      
   enum SystemType{Forex=0, Bitcoin=1, _Gold=2, US_Indeces=3};
   input SystemType Stype=0;
   int SysChoice;
   
   
         
         input double RiskPercent         = 3;   // Risk as % of Trading capital)
        
         input ENUM_TIMEFRAMES Timeframe  = PERIOD_CURRENT; //Time frame to run
         input int    InpMagic            = 298347; //EA indentification no
         input string TradeComment = "Scalpin Robot";
         
         
         enum StarHour { Inactive=0, _0100=1, _0200=2, _0300=3, _0400=4, _0500=5, _0600=6, _0700=7, _0800=8, _0900=9, _1000=10, _1100=11, _1200=12, _1300=13, _1400=14, _1500=15, _1600=16, _1700=17, _1800=18, _1900=19, _2000=20, _2100=21, _2200=22, _2300=23};
         input StarHour SHInput=0; // Star Hour
         
         enum EndHour { Inactive=0, _0100=1, _0200=2, _0300=3, _0400=4, _0500=5, _0600=6, _0700=7, _0800=8, _0900=9, _1000=10, _1100=11, _1200=12, _1300=13, _1400=14, _1500=15, _1600=16, _1700=17, _1800=18, _1900=19, _2000=20, _2100=21, _2200=22, _2300=23};
         input EndHour EHInput=0; // End Hour
         
         int SHChoice;
         int EHChoice;
         
         int    BarsN               = 5;
         int    ExpirationBars      = 100;
         double OrderDistPoints     = 100;
         double Tppoints, Slpoints, TslTriggerPoints, TslPoints;
         
         
         input group "=== Forex Trading Inputs ==="
          
            input int TppointsInput = 200; // Take Profit (10 points = 1 pip)
            input int SlpointsInput = 200; // Stoploss Points (16 points = 1 pip)
            input int TslTriggerPointsInput = 15; // Points in profit before Trailing SL is activated (10 points = 1 pip)
            input int TslPointsInput = 10; // Trailing Stop Loss (10 points = 1 pip)
            
         input group "=== Crypto Related Input === (effective only under Bitcoin profile)"
           
            input double TPasPct =0.4; // TP as % of Price
            input double SLasPct = 0.4; // SL as%of Price
            input double TSLasPctofTP=5; // Trail SL as % of TP
            input double TSLTgrasPctofTP=7; // Trigger of Trail SL % of TP
         
         
         input group "=== Gold Related Input === (effective only under Gold profile)"
           
            input double TPasPctGold =0.2; // TP as % of Price
            input double SLasPctGold = 0.2; // SL as% of Price
            input double TSLasPctofTPGold=5; // Trail SL as % of TP
            input double TSLTgrasPctofTPGold=7; // Trigger of Trail SL % of TP
         
         input group "=== Indices Related Input === (effective only under Indices profile)"
          
            input double TPasPctIndices =0.2; // TP as % of Price
            input double SLasPctIndices = 0.2; // SL as 5% of Price
            input double TSLasPctofTPIndices=5; // Trail SL as % of TP
            input double TSLTgrasPctofTPIndices=7; // Trigger of Trail SL % of TP




int OnInit()
  {
//---
   
//---

      trade.SetExpertMagicNumber(InpMagic);
      
         ChartSetInteger(0,CHART_SHOW_GRID,false);
         
         
         SHChoice = SHInput;
         EHChoice = EHInput;
         
         
         if(Stype==0) SysChoice=0;
         if(Stype==1) SysChoice=1;
         if(Stype==2) SysChoice=2;
         if(Stype==3) SysChoice=3;
         
         
         Tppoints = TppointsInput;
         Slpoints = SlpointsInput;
         TslTriggerPoints = TslTriggerPointsInput;
         TslPoints = TslTriggerPointsInput;
      
      

      return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| Expert deinitialization function                                 |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
  {
//---
   
  }
//+------------------------------------------------------------------+
//| Expert tick function                                             |
//+------------------------------------------------------------------+
void OnTick()
  {
//---

      TrailStop();

      if(!IsNewBar())return;
      
      MqlDateTime time;
      TimeToStruct(TimeCurrent(),time);
      
      int Hournow = time.hour;
      

      
      if(Hournow<SHChoice){CloseAllOrders(); return;}
      if(Hournow>=EHChoice && EHChoice!=0){CloseAllOrders(); return;}
      
      
      if(SysChoice==1){

         double ask = SymbolInfoDouble(_Symbol,SYMBOL_ASK);
         Tppoints = ask * TPasPct;
         Slpoints = ask * SLasPct;
         OrderDistPoints = Tppoints/2;
         TslPoints = Tppoints * TSLasPctofTP/100;
         TslTriggerPoints= Tppoints * TSLTgrasPctofTP/100;
        }


      
      int BuyTotal=0;
      int SellTotal=0;
      
      
      for (int i=PositionsTotal()-1; i>=0; i--){
         pos.SelectByIndex(i);
         if(pos.PositionType()==POSITION_TYPE_BUY && pos.Symbol()==_Symbol && pos.Magic()==InpMagic) BuyTotal++;
         if(pos.PositionType()==POSITION_TYPE_SELL && pos.Symbol()==_Symbol && pos.Magic()==InpMagic) SellTotal++;
       }
       
       for (int i=PositionsTotal()-1; i>=0; i--){
         ord.SelectByIndex(i);
         if(ord.OrderType()==ORDER_TYPE_BUY_STOP && ord.Symbol()==_Symbol && ord.Magic()==InpMagic) BuyTotal++;
         if(ord.OrderType()==ORDER_TYPE_SELL_STOP && ord.Symbol()==_Symbol && ord.Magic()==InpMagic) SellTotal++;
       }
       
       if(BuyTotal <=0){
          double high = findHigh();
          if(high > 0){
             SendBuyOrder(high);
          }
        }
        
        
        if(SellTotal <=0){
          double low = findLow();
          if(low > 0){
             SendSellOrder(low);
          }
        }
      
   
  }
//+------------------------------------------------------------------+



double findHigh(){
   double highestHigh = 0;
   for(int i = 0; i < 200; i++){
      double high = iHigh(_Symbol,Timeframe,i);
      if(i > BarsN && iHighest(_Symbol,Timeframe,MODE_HIGH,BarsN*2+1,i-BarsN) == i){
         if(high > highestHigh){
            return high;
          }
         
       }
       highestHigh = MathMax(high, highestHigh);
      }
      return -1;

}




double findLow(){
   double LowestLow = DBL_MAX;
   for(int i = 0; i <200; i++){
      double Low = iLow(_Symbol,Timeframe,i);
      if(i > BarsN && iLowest(_Symbol,Timeframe,MODE_LOW,BarsN*2+1,i-BarsN) == i){
         if(Low > LowestLow){
            return Low;
          }
         
       }
       LowestLow = MathMin(Low, LowestLow);
      }
      return -1;

}


bool IsNewBar(){
   static datetime previousTime = 0;
   datetime currentTime = iTime(_Symbol,Timeframe,0);
   if(previousTime!=currentTime){
      previousTime=currentTime;
      return true;   
   }
   return false;
}


void SendBuyOrder(double entry){
   
   double ask = SymbolInfoDouble(_Symbol,SYMBOL_ASK);
    
       if(ask > entry - OrderDistPoints * _Point) return;
       
       double tp = entry + Tppoints * _Point;
       double sl = entry - Slpoints * _Point;
       
    double lots = 0.01;
    if(RiskPercent > 0) lots = calcLots(entry-sl);
    
    datetime expiration = iTime(_Symbol,Timeframe,0) + ExpirationBars * PeriodSeconds(Timeframe);
      
       trade.BuyStop(lots,entry,_Symbol,sl,tp,ORDER_TIME_SPECIFIED,expiration);
}



void SendSellOrder(double entry){
   
   double bid = SymbolInfoDouble(_Symbol,SYMBOL_BID);
    
       if(bid < entry + OrderDistPoints *_Point) return;
       
       double tp = entry - Tppoints*_Point;
       double sl = entry + Slpoints*_Point;
       
    double lots = 0.01;
    if(RiskPercent > 0) lots = calcLots(sl-entry);
    
    datetime expiration = iTime(_Symbol,Timeframe,0) + ExpirationBars * PeriodSeconds(Timeframe);
      
       trade.SellStop(lots,entry,_Symbol,sl,tp,ORDER_TIME_SPECIFIED,expiration);
}





double calcLots(double slPoints){
   double risk = AccountInfoDouble(ACCOUNT_BALANCE) * RiskPercent / 100;
   
   double ticksize =SymbolInfoDouble(_Symbol,SYMBOL_TRADE_TICK_SIZE);
   double tickvalue = SymbolInfoDouble(_Symbol,SYMBOL_TRADE_TICK_VALUE);
   double lotstep = SymbolInfoDouble( _Symbol,SYMBOL_VOLUME_STEP);
   double minvolume=SymbolInfoDouble(_Symbol,SYMBOL_VOLUME_MIN);
   double maxvolume=SymbolInfoDouble(_Symbol,SYMBOL_VOLUME_MAX);
   double volumelimit = SymbolInfoDouble(_Symbol,SYMBOL_VOLUME_LIMIT);
   
   double moneyPerLotstep = slPoints / ticksize * tickvalue * lotstep;
   double lots = MathFloor(risk / moneyPerLotstep) * lotstep;
   
   if(volumelimit!=0) lots = MathMin(lots,volumelimit);
   if(maxvolume!=0) lots = MathMin(lots,SymbolInfoDouble(_Symbol,SYMBOL_VOLUME_MAX));
   if(minvolume!=0) lots = MathMax(lots,SymbolInfoDouble(_Symbol,SYMBOL_VOLUME_MIN));
   lots = NormalizeDouble(lots,2);
   
   return lots;
}



void CloseAllOrders(){
   
   for(int i=OrdersTotal()-1;i>=0;i--){
      ord.SelectByIndex(i);
      ulong ticket = ord.Ticket();
      if(ord.Symbol()==_Symbol && ord.Magic()==InpMagic){
         trade.OrderDelete(ticket);
      }
   }
}


void TrailStop() {

   double sl = 0;
   double tp = 0;
   
   double ask = SymbolInfoDouble(_Symbol, SYMBOL_ASK);
   double bid = SymbolInfoDouble(_Symbol, SYMBOL_BID);
   
   for (int i = PositionsTotal() - 1; i >= 0; i--) {
      if (pos.SelectByIndex(i)) {
         ulong ticket = pos.Ticket();
         
         if (pos.Magic() == InpMagic && pos.Symbol() == _Symbol) {
         
            if (pos.PositionType() == POSITION_TYPE_BUY) {
               if (bid - pos.PriceOpen() > TslTriggerPoints * _Point) {
                  tp = pos.TakeProfit();
                  sl = bid - (TslPoints * _Point);
                  
                  if (sl > pos.StopLoss() && sl != 0) {
                     trade.PositionModify(ticket, sl, tp);
                  }
               }
            }
             else if (pos.PositionType() == POSITION_TYPE_SELL) {
               if (ask +(TslTriggerPoints* _Point)<pos.PriceOpen()){
                  tp = pos.TakeProfit();
                  sl = ask + (TslPoints * _Point);
                  
                  if (sl > pos.StopLoss() && sl != 0) {
                     trade.PositionModify(ticket, sl, tp);
                  }
               }
            }
         }   
      }
   }
}



preciso que adicione opção para alterar quantidade maxima de ordens placed no codigo