//+------------------------------------------------------------------+
//|                                                         PRNG.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_PRNG_MQH
#define CRYPTOBYLEO_SRC_URANDOM_PRNG_MQH

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
#include <TSN\\Random\\Base.mqh>
#include "..\\Simetric\\AES\\Defines.mqh"

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
namespace TSN
{
//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
// Interfaz base compatible con culquier bacjend de PRNGByLeo
// Esto no es seguro criptograficamente
// Igualemte se implementa dado que se quiere dar libertad a los usuarios si eleigr DLL o no
// Dado que en MQL5 no todos estan disepuestos a usar DLL en sus EAs
// Dado qeu conlleva ventjasa (seguridad en este caso) como desventjaas (dependeicneis si estas mas atado al ecosimta, tipo vender en market, o codebase)
// Por esa razon tambien se deja escojer una version nativa que usa PRNGByLeo por detras.. cieramnte no es seguro o comparble con urandom nativoi
// pero si no peudes usar dll almenos usa esto a usar directamnete el generador "pelado"

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
template <typename TBackend>
class CURandomPRNG
 {
public:
                     CURandomPRNG(void) {}
                    ~CURandomPRNG(void) {}

  //---
  static CRandom<TBackend> s_rand;

  //--- Random crypto
  static void      RandomCryptoBytes(uchar& out[], int oult, int o_s = 0);

  //--- Proposito general big integers
  static void        RandomUlongArr(ulong& out[], int oult, int o_s = 0);
  static void        RandomUlongArrRange(ulong& out[], int oult, ulong last, int o_s = 0);
 };


//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
template <typename TBackend>
CRandom<TBackend> CURandomPRNG::s_rand;

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
template <typename TBackend>
static void CURandomPRNG::RandomCryptoBytes(uchar& out[], int oult, int o_s = 0)
 {
  oult += o_s;
  for(; o_s + 7 < oult;)
   {
    ulong ul = 0;
    const ulong s = s_rand.nextUInt64();
    switch(uchar(s & 7)) // % 8 = & 7
     {
      // fuentes de "entropia"
      // ping_last, memory used (current), terminal retramsicion de paquetes
      case 0:
       {
        ul = s_rand.nextUInt64();
        break;
       }
      case 1:
       {
        ul = (ulong)TerminalInfoInteger(TERMINAL_PING_LAST) << 16;
        break;
       }
      case 2:
       {
        ul = (ulong)TerminalInfoInteger(TERMINAL_MEMORY_USED) << 16;
        break;
       }
      case 3:
       {
        ul = ulong(TerminalInfoDouble(TERMINAL_RETRANSMISSION) * 100) << 16;
        break;
       }
      case 4:
       {
        ul = GetMicrosecondCount();
        break;
       }
      case 5:
       {
        ul = GetTickCount64();
        break;
       }
      case 6:
       {
        ul = ulong(SymbolInfoDouble(_Symbol, SYMBOL_BID) * SymbolInfoDouble(_Symbol, SYMBOL_LAST));
        break;
       }
      case 7:
       {
        ul = (s_rand.nextUInt64() ^ s_rand.nextUInt64()) << (s_rand.nextUInt64() & 31);
        break;
       }
      default:
        break;
     }

    //--
    if((s << 16) > 0)
     {
      ul = (ul << 32) | (ul >> 32);
     }

    //---
    const ulong t = s_rand.nextUInt64();
    out[o_s++] = g_aes_sbox[uchar(ul) ^ uchar(t)];
    out[o_s++] = g_aes_sbox[uchar(ul >> 8) ^ uchar(t >> 8)];
    out[o_s++] = g_aes_sbox[uchar(ul >> 16) ^ uchar(t >> 16)];
    out[o_s++] = g_aes_sbox[uchar(ul >> 24) ^ uchar(t >> 24)];
    out[o_s++] = g_aes_sbox[uchar(ul >> 32) ^ uchar(t >> 32)];
    out[o_s++] = g_aes_sbox[uchar(ul >> 40) ^ uchar(t >> 40)];
    out[o_s++] = g_aes_sbox[uchar(ul >> 48) ^ uchar(t >> 48)];
    out[o_s++] = g_aes_sbox[uchar(ul >> 56) ^ uchar(t >> 56)];
   }

//---
  for(; o_s < oult; o_s++)
   {
    out[o_s] = g_aes_sbox[s_rand.nextUInt32() & 255];
   }
 }

//+------------------------------------------------------------------+
//|                                                                  |
//+------------------------------------------------------------------+
template <typename TBackend>
static void CURandomPRNG::RandomUlongArr(ulong& out[], int oult, int o_s = 0)
 {
  for(; o_s < oult; o_s++)
   {
    out[o_s] = s_rand.nextUInt64();
   }
 }

//+------------------------------------------------------------------+
template <typename TBackend>
static void CURandomPRNG::RandomUlongArrRange(ulong& out[], int oult, ulong last, int o_s = 0)
 {
// completos
  for(; o_s < oult - 1; o_s++)
   {
    out[o_s] = s_rand.nextUInt64();
   }
//resto
  out[o_s] = s_rand.boundedUInt64(last);
 }
//---
}



#endif // CRYPTOBYLEO_SRC_URANDOM_PRNGHELP_BASE_MQH
//+------------------------------------------------------------------+