//+------------------------------------------------------------------+
//|                                                        Diver.mq4 |
//|                                              Copyright 2018, AM2 |
//|                                      http://www.forexsystems.biz |
//+------------------------------------------------------------------+
#property copyright "Copyright 2018, AM2"
#property link      "http://www.forexsystems.biz"
#property version   "1.00"
#property strict

//--- Inputs
extern double Lots       = 0.1;      // лот
extern double KLot       = 1;        // умножение лота
extern double MaxLot     = 5;        // максимальный лот
extern int StopLoss      = 2000;     // лось
extern int TakeProfit    = 3000;     // язь
extern int Slip          = 30;       // реквот
extern int Shift         = 1;        // на каком баре сигнал индикатора
extern int Magic         = 123;      // магик

extern string IndName    = "rsx_nrp_reg_histo_mtfdivergence_nmc";
//+------------------------------------------------------------------+
//| Expert initialization function                                   |
//+------------------------------------------------------------------+
int OnInit()
  {
//---
   Comment("");
//---
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| Expert deinitialization function                                 |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
  {
   Comment("");
  }

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void PutOrder(int type,double price)
  {
   int r=0;
   color clr=Green;
   double sl=0,tp=0;

   if(type==1 || type==3 || type==5)
     {
      clr=Red;
      if(StopLoss>0) sl=NormalizeDouble(price+StopLoss*Point,Digits);
      if(TakeProfit>0) tp=NormalizeDouble(price-TakeProfit*Point,Digits);
     }

   if(type==0 || type==2 || type==4)
     {
      clr=Blue;
      if(StopLoss>0) sl=NormalizeDouble(price-StopLoss*Point,Digits);
      if(TakeProfit>0) tp=NormalizeDouble(price+TakeProfit*Point,Digits);
     }

   r=OrderSend(NULL,type,Lot(),NormalizeDouble(price,Digits),Slip,sl,tp,"",Magic,0,clr);
   return;
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
int CountTrades()
  {
   int count=0;
   for(int i=OrdersTotal()-1;i>=0;i--)
     {
      if(OrderSelect(i,SELECT_BY_POS,MODE_TRADES))
        {
         if(OrderSymbol()==Symbol() && OrderMagicNumber()==Magic)
           {
            if(OrderType()<2) count++;
           }
        }
     }
   return(count);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void OpenPos()
  {
   double lim = iCustom(NULL,0,IndName,3,Shift);
   double red = iCustom(NULL,0,IndName,3,Shift);

   if(lim!=EMPTY_VALUE)PutOrder(0,Ask);
   if(red!=EMPTY_VALUE)PutOrder(1,Bid);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void ClosePos()
  {
   double lim = iCustom(NULL,0,IndName,3,Shift);
   double red = iCustom(NULL,0,IndName,4,Shift);

   if(red!=EMPTY_VALUE) CloseAll(0);
   if(lim!=EMPTY_VALUE) CloseAll(1);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
double Lot()
  {
   double lot=Lots;
   for(int i=OrdersHistoryTotal()-1;i>=0;i--)
     {
      if(OrderSelect(i,SELECT_BY_POS,MODE_HISTORY))
        {
         if(OrderSymbol()==Symbol() && OrderMagicNumber()==Magic)
           {
            if(OrderProfit()>0) break;
            if(OrderProfit()<0)
              {
               lot=OrderLots()*KLot;
               break;
              }
           }
        }
     }
   if(lot>MaxLot)lot=Lots;
   return(lot);
  }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void CloseAll(int ot=-1)
  {
   bool cl;
   for(int i=OrdersTotal()-1;i>=0;i--)
     {
      if(OrderSelect(i,SELECT_BY_POS,MODE_TRADES))
        {
         if(OrderSymbol()==Symbol() && OrderMagicNumber()==Magic)
           {
            if(OrderType()==0 && (ot==0 || ot==-1))
              {
               RefreshRates();
               cl=OrderClose(OrderTicket(),OrderLots(),NormalizeDouble(Bid,Digits),Slip,White);
              }
            if(OrderType()==1 && (ot==1 || ot==-1))
              {
               RefreshRates();
               cl=OrderClose(OrderTicket(),OrderLots(),NormalizeDouble(Ask,Digits),Slip,White);
              }
           }
        }
     }
  }
//+------------------------------------------------------------------+
//| Expert tick function                                             |
//+------------------------------------------------------------------+
void OnTick()
  {
   double lime= iCustom(NULL,0,IndName,3,Shift);
   double red = iCustom(NULL,0,IndName,4,Shift);

   if(CountTrades()<1) OpenPos();
   else ClosePos();


   Comment("\n lime: ",lime,
           "\n red: ",red);
  }
//+------------------------------------------------------------------+