//+------------------------------------------------------------------+
//|                                                       BCrypt.mqh |
//|                                   Copyright 2026, Niquel Mendoza |
//|                                             https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2026, Niquel Mendoza"
#property link      "https://www.mql5.com"
#property strict

#ifndef CRYPTOBYLEO_SRC_URANDOM_BCRYPT_MQH
#define CRYPTOBYLEO_SRC_URANDOM_BCRYPT_MQH

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
#include "..\\BCrypt\\Main.mqh"
#include <TSN\\Tables\\Bits.mqh>

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
namespace TSN
{
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
class CURandom
 {
public:
                     CURandom(void) {}
                    ~CURandom(void) {}
  //----
  static __forceinline void RandomCryptoBytes(uchar& out[], int oult, int o_s = 0);
  static __forceinline void RandomUlongArr(ulong& out[], int oult, int o_s = 0);
  static void        RandomUlongArrRange(ulong& out[], int oult, ulong last, int o_s = 0);
 };

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
static __forceinline void CURandom::RandomCryptoBytes(uchar &out[], int oult, int o_s = 0)
 {
  BCryptRandomWOffset(out, o_s, oult);
 }
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
static __forceinline void CURandom::RandomUlongArr(ulong& out[], int oult, int o_s = 0)
 {
  BCryptRandomWOffset(out, sizeof(ulong) * o_s, sizeof(ulong) * oult);
 }

//+------------------------------------------------------------------+
static void CURandom::RandomUlongArrRange(ulong& out[], int oult, ulong last, int o_s = 0)
 {
// completos
  BCryptRandomWOffset(out, sizeof(ulong) * o_s, sizeof(ulong) * oult);
//resto
  o_s += (oult - 1);

//---
// genermaos una mascarac que cobra el rango de [0 - last]
  ulong mask = last;
  mask |= mask >> 1;
  mask |= mask >> 2;
  mask |= mask >> 4;
  mask |= mask >> 8;
  mask |= mask >> 16;
  mask |= mask >> 32;

//---
  ulong candidate = out[o_s] & mask;
  while(candidate > last)
   {
    BCryptRandomWOffset(out, sizeof(ulong) * o_s, sizeof(ulong));
    candidate = out[o_s] & mask;
   }
  out[o_s] = candidate;
 }

}
//+------------------------------------------------------------------+
#endif // CRYPTOBYLEO_SRC_URANDOM_BCRYPT_MQH