///////////////////////////////////////////////////////
// 
// SaherElm IT Center StopLoss Indicator
// ---------------------------------------------
// saherelm implementation of above indicator ...
//
// Maintainer:
// ------------
// Hadi Khazaee Asl (hadi_khazaee_asl@yahoo.com)
// 
//////////////////////////////////////////////////////
//
// Global Properties ...
#property copyright "Copyright 2023, SaherElm IT Center"
#property link "https://saherelm.ir"
#property version "1.00"
#property description "SaherElm StopLoss Indicator"
#property strict

//
// START Inputs ...
//
input int swingLoopback = 7; // Swing Loopback
input double thrshold = 10; // Threshold
//
// END Inputs ...
//

//
// START Global Definitions: Variables, Properties and etc ...
//
// 
// Specify this is an Chart Indicator ...
#property indicator_chart_window

//
// we have 2 buffer in this indicator ...
#property indicator_buffers 2

//
// also we have 2 line for draw on this indicator ...
#property indicator_plots   2

//
// here we declare plot Long Stop Loss to system ...
#property indicator_label1  "Long Stop Loss"
#property indicator_type1   DRAW_LINE
#property indicator_color1  clrFuchsia 
#property indicator_style1  STYLE_SOLID
#property indicator_width1  1

//
// here we declare plot Short Stop Loss to system ...
#property indicator_label2  "Short Stop Loss"
#property indicator_type2   DRAW_LINE
#property indicator_color2  clrAqua
#property indicator_style2  STYLE_SOLID
#property indicator_width2  1

//
// here we declare indicator buffers ...
// 
double longStopLossBuffer[];
double shortStopLossBuffer[];

//
#define longStopLossIndex 0
#define shortStopLossIndex 1
//
// END Global Definitions: Variables, Properties and etc ...
//

//
// Start Event Handlers ...
// 
//
// Initialization ...
int OnInit() {
    //
    // Initialize what we want ...
    SetIndexBuffer(longStopLossIndex, longStopLossBuffer);
    SetIndexBuffer(shortStopLossIndex, shortStopLossBuffer);

    //
    return(INIT_SUCCEEDED);
}

//
// Calculating what we want ...
int OnCalculate(const int rates_total,
                const int prev_calculated,
                const datetime &time[],
                const double &open[],
                const double &high[],
                const double &low[],
                const double &close[],
                const long &tick_volume[],
                const long &volume[],
                const int &spread[]
) {
   //
   int limit;
   
   //
   // input variable, we return 0 means nothing passed ...
   if (rates_total < swingLoopback) {
      return 0;
   }
   
   //
   // found which candles calculated before ...
   limit = rates_total - prev_calculated;
   if (prev_calculated > 0) {
      limit++;
   }

   //
   // Do Calculation ...
   for (int i = limit - 1; i >= 0; i--) {
        //
        int lastMarketHighestIndex = iHighest(_Symbol, _Period, MODE_HIGH, swingLoopback, i);
        double lastMarketHighest = high[lastMarketHighestIndex];
        
        //    
        int lastMarketLowestIndex = iLowest(_Symbol, _Period, MODE_LOW, swingLoopback, i);
        double lastMarketLowest = low[lastMarketLowestIndex];
        
        //
        double longStopLoss = lastMarketLowest - (thrshold * _Point);
        longStopLoss = NormalizeDouble(longStopLoss, _Digits);
        
        //
        double shortStopLoss = lastMarketHighest + (thrshold * _Point);
        shortStopLoss = NormalizeDouble(shortStopLoss, _Digits);
        
        //
        longStopLossBuffer[i] = longStopLoss;
        shortStopLossBuffer[i] = shortStopLoss;
   }

   //
   // return value of prev_calculated for next call
   return(rates_total);
}
//
// END Event Handlers ...
// 

//
// START Functions ...
//
//
// END Functions ...
//