//+------------------------------------------------------------------+
//|                                              Arjo_Indicators.mqh |
//|                                  Copyright 2025, MetaQuotes Ltd. |
//|                                             https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2025, MetaQuotes Ltd."
#property link      "https://www.mql5.com"
#property version   "1.00"
#property strict

#include <Mql5Book\Timer.mqh>
#include <Mql5Book\Indicators.mqh>

#include "Chapter1_ChartDebug.mqh"
#include "Barsbydate.mqh"

string location = "DexterrFX - SMC Bible/";
//+------------------------------------------------------------------+
//| Swing wrapper for iCustom "External"                              |
//| NOTE: We keep arrays NON-series: index 0 = oldest                 |
//+------------------------------------------------------------------+
datetime FirstOfPreviousMonths(datetime currentTime, int monthsBack) {
   MqlDateTime dt;
   TimeToStruct(currentTime, dt);

   dt.mon -= monthsBack;
   while(dt.mon <= 0) {
      dt.mon += 12;
      dt.year--;
   }

   dt.day  = 1;
   dt.hour = 0;
   dt.min  = 0;
   dt.sec  = 0;

   return StructToTime(dt);
}

// Copies buffer values by DATE RANGE (not count)
// Arrays remain NON-series: high[0] oldest within range, high[copied-1] newest
int CopyBufRange(long indicator_handle, int buffer_index, datetime start_time, datetime stop_time, double &dst[]) {
   ArrayResize(dst, 0);

   if(indicator_handle == INVALID_HANDLE) return 0;
   if(start_time <= 0 || stop_time <= 0 || stop_time <= start_time) return 0;

   int copied = CopyBuffer(indicator_handle, buffer_index, start_time, stop_time, dst);
   if(copied <= 0) {
      Print("CopyBufRange failed. buf=", buffer_index,
            " err=", GetLastError(),
            " from=", TimeToString(start_time),
            " to=", TimeToString(stop_time));
      return 0;
   }

   // DO NOT ArraySetAsSeries(dst,true); (your rule)
   return copied;
}

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
struct Fvg {
   double top, bottom;
};

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
class FairValue: public CIndicator {
private:
   double         bullTop[], bullBottom[], bearTop[], bearBottom[];
   datetime          fromTime;
   datetime          toTime;

public:
   FairValue();
   int Init(string indName, string pSymbol, ENUM_TIMEFRAMES pTimeframe, int InpLeftRightBars = 3, int InpSwingWindow = 1);

   bool IsValidValue(Fvg &fvg) {
      return ((fvg.top != 0.0 && fvg.top != EMPTY_VALUE) && (fvg.bottom != 0.0 && fvg.bottom != EMPTY_VALUE));
   }

   void      getBullFvg(Fvg &fvg, int barIndex = 0);
   void      getBearFvg(Fvg &fvg, int barIndex = 0);
};
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
FairValue::FairValue(void) {
   fromTime = 0;
   toTime   = 0;
}
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
int FairValue::Init(string indName, string pSymbol, ENUM_TIMEFRAMES pTimeframe, int InpLeftRightBars = 3, int InpSwingWindow = 1) {
   handle = iCustom(pSymbol, pTimeframe, location + indName, InpLeftRightBars, InpSwingWindow);

   if(handle == INVALID_HANDLE) {
      Print("Error creating Swing Indicator: ", GetLastError());
      return -1;
   }

   toTime   = TimeCurrent();
   fromTime = FirstOfPreviousMonths(toTime, 3); // <<--- ONLY 3 MONTHS

   return handle;
}

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
void FairValue::getBullFvg(Fvg &fvg, int barIndex = 0) {

   toTime   = TimeCurrent();
   fromTime = FirstOfPreviousMonths(toTime, 3);

   int copied = CopyBufRange(handle, 1, fromTime, toTime, bullTop);
   int copied0 = CopyBufRange(handle, 2, fromTime, toTime, bullBottom);

   if(copied <= 0 && copied0 <= 0) return ;
   if(barIndex < 0 || (barIndex >= copied && barIndex >= copied0)) return ;

   fvg.top = bullTop[barIndex];
   fvg.bottom = bullBottom[barIndex];

}
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+

void FairValue::getBearFvg(Fvg &fvg, int barIndex = 0) {

   toTime   = TimeCurrent();
   fromTime = FirstOfPreviousMonths(toTime, 3);

   int copied = CopyBufRange(handle, 5, fromTime, toTime, bearTop);
   int copied0 = CopyBufRange(handle, 6, fromTime, toTime, bearBottom);

   if(copied <= 0 && copied0 <= 0) return ;
   if(barIndex < 0 || (barIndex >= copied && barIndex >= copied0)) return ;

   fvg.top = bearTop[barIndex];
   fvg.bottom = bearBottom[barIndex];

}
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
class Swing: public CIndicator {
private:
   double            high[], low[], swings[];
   CIntegerArrayList hs;
   CIntegerArrayList ls;
   CIntegerArrayList zz;

   // we only copy last 3 months
   datetime          fromTime;
   datetime          toTime;

public:
   Swing();

   int Init(string indName, string pSymbol, ENUM_TIMEFRAMES pTimeframe, int InpLeftRightBars = 3, int InpSwingWindow = 1);
   bool IsValidValue(double v) {
      return (v != 0.0 && v != EMPTY_VALUE);
   }
   // ---------------------------
   // SET A: FILTERED (non-empty) — returns the BAR INDEX (within the copied range)
   // pShift = 0 -> most recent non-empty swing in range
   // ---------------------------
   int    High(int pShift = 0);
   int    Low(int pShift = 0);
   int    ZZ(int pShift = 0);

   double HighPrice(int pShift = 0);
   double LowPrice(int pShift = 0);
   double ZZPrice(int pShift = 0);

   // ---------------------------
   // SET B: EXACT INDEX — returns raw buffer VALUE at an EXACT bar index (within the copied range)
   // barIndex: 0 oldest in range, BarCount-1 newest in range
   // ---------------------------
   double HighAt(int barIndex);
   double LowAt(int barIndex);
   double ZZAt(int barIndex);

   // Range info (optional but handy)
   int    BarsCountHigh();
   int    BarsCountLow();
   int    BarsCountZZ();
};


//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
Swing::Swing(void) {
   // IMPORTANT: no series
   ArrayResize(high, 0);
   ArrayResize(low, 0);
   ArrayResize(swings, 0);

   fromTime = 0;
   toTime   = 0;
}

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
int Swing::Init(string indName, string pSymbol, ENUM_TIMEFRAMES pTimeframe, int InpLeftRightBars, int InpSwingWindow) {
   handle = iCustom(pSymbol, pTimeframe, location + indName, InpLeftRightBars, InpSwingWindow);

   if(handle == INVALID_HANDLE) {
      Print("Error creating Swing Indicator: ", GetLastError());
      return -1;
   }

   toTime   = TimeCurrent();
   fromTime = FirstOfPreviousMonths(toTime, 3); // <<--- ONLY 3 MONTHS

   return handle;
}

//+------------------------------------------------------------------+
//| Exact value at exact bar index (within range)                     |
//+------------------------------------------------------------------+
double Swing::HighAt(int barIndex) {
   toTime   = TimeCurrent();
   fromTime = FirstOfPreviousMonths(toTime, 3);

   int copied = CopyBufRange(handle, 0, fromTime, toTime, high);
   if(copied <= 0) return EMPTY_VALUE;
   if(barIndex < 0 || barIndex >= copied) return EMPTY_VALUE;

   return high[barIndex];
}


//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
double Swing::LowAt(int barIndex) {
   toTime   = TimeCurrent();
   fromTime = FirstOfPreviousMonths(toTime, 3);

   int copied = CopyBufRange(handle, 1, fromTime, toTime, low);
   if(copied <= 0) return EMPTY_VALUE;
   if(barIndex < 0 || barIndex >= copied) return EMPTY_VALUE;

   return low[barIndex];
}

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
double Swing::ZZAt(int barIndex) {
   toTime   = TimeCurrent();
   fromTime = FirstOfPreviousMonths(toTime, 3);

   int copied = CopyBufRange(handle, 4, fromTime, toTime, swings);
   if(copied <= 0) return EMPTY_VALUE;
   if(barIndex < 0 || barIndex >= copied) return EMPTY_VALUE;

   return swings[barIndex];
}

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
int Swing::BarsCountHigh() {
   return ArraySize(high);
}
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
int Swing::BarsCountLow()  {
   return ArraySize(low);
}
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
int Swing::BarsCountZZ()   {
   return ArraySize(swings);
}

//+------------------------------------------------------------------+
//| FILTERED (non-empty): return BAR INDEX of pShift-th swing HIGH    |
//| pShift=0 -> most recent non-empty in the 3-month window           |
//+------------------------------------------------------------------+
int Swing::High(int pShift) {
   hs.Clear();
   toTime   = TimeCurrent();
   fromTime = FirstOfPreviousMonths(toTime, 3);
   int copied = CopyBufRange(handle, 0, fromTime, toTime, high);
   if(copied <= 0) return -1;

   // scan oldest->newest but we want "most recent" first,
   // so collect indexes then read from the end.
   for(int i = 0; i < copied; i++)
      if(IsValidValue(high[i]))
         hs.Add(i);

   int count = hs.Size();
   if(count == 0) return -1;

   int idxFromEnd = count - 1 - pShift;
   if(idxFromEnd < 0) idxFromEnd = 0; // fallback to oldest swing in range
   return hs.Get(idxFromEnd);
}

//+------------------------------------------------------------------+
//| FILTERED (non-empty): return BAR INDEX of pShift-th swing LOW     |
//+------------------------------------------------------------------+
int Swing::Low(int pShift) {
   ls.Clear();
   toTime   = TimeCurrent();
   fromTime = FirstOfPreviousMonths(toTime, 3);
   int copied = CopyBufRange(handle, 1, fromTime, toTime, low);
   if(copied <= 0) return -1;

   for(int i = 0; i < copied; i++)
      if(IsValidValue(low[i]))
         ls.Add(i);

   int count = ls.Size();
   if(count == 0) return -1;

   int idxFromEnd = count - 1 - pShift;
   if(idxFromEnd < 0) idxFromEnd = 0;
   return ls.Get(idxFromEnd);
}

//+------------------------------------------------------------------+
//| FILTERED (non-empty): return BAR INDEX of pShift-th ZZ swing      |
//+------------------------------------------------------------------+
int Swing::ZZ(int pShift) {
   zz.Clear();
   toTime   = TimeCurrent();
   fromTime = FirstOfPreviousMonths(toTime, 3);
   int copied = CopyBufRange(handle, 4, fromTime, toTime, swings);
   if(copied <= 0) return -1;

   for(int i = 0; i < copied; i++)
      if(IsValidValue(swings[i]))
         zz.Add(i);

   int count = zz.Size();
   if(count == 0) return -1;

   int idxFromEnd = count - 1 - pShift;
   if(idxFromEnd < 0) idxFromEnd = 0;
   return zz.Get(idxFromEnd);
}

//+------------------------------------------------------------------+
//| FILTERED price by swing order                                     |
//+------------------------------------------------------------------+
double Swing::HighPrice(int pShift) {
   int barIndex = High(pShift);
   if(barIndex < 0) return EMPTY_VALUE;
   toTime   = TimeCurrent();
   fromTime = FirstOfPreviousMonths(toTime, 3);
   if(barIndex >= ArraySize(high)) CopyBufRange(handle, 0, fromTime, toTime, high);
   if(barIndex < 0 || barIndex >= ArraySize(high)) return EMPTY_VALUE;
   return high[barIndex];
}

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
double Swing::LowPrice(int pShift) {
   int barIndex = Low(pShift);
   if(barIndex < 0) return EMPTY_VALUE;
   toTime   = TimeCurrent();
   fromTime = FirstOfPreviousMonths(toTime, 3);
   if(barIndex >= ArraySize(low)) CopyBufRange(handle, 1, fromTime, toTime, low);
   if(barIndex < 0 || barIndex >= ArraySize(low)) return EMPTY_VALUE;
   return low[barIndex];
}

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
double Swing::ZZPrice(int pShift) {
   int barIndex = ZZ(pShift);
   if(barIndex < 0) return EMPTY_VALUE;
   toTime   = TimeCurrent();
   fromTime = FirstOfPreviousMonths(toTime, 3);
   if(barIndex >= ArraySize(swings)) CopyBufRange(handle, 4, fromTime, toTime, swings);
   if(barIndex < 0 || barIndex >= ArraySize(swings)) return EMPTY_VALUE;
   return swings[barIndex];
}


//+------------------------------------------------------------------+
//| Base chapter (fixed constructor name + uses CBarsbydate)          |
//+------------------------------------------------------------------+

//+------------------------------------------------------------------+