/***
    Copyright (C) 2021 J Reece Wilson (a/k/a "Reece"). All rights reserved.

    File: AuRandomDevice.hpp
    Date: 2021-9-3
    Author: Reece
***/
#pragma once

#include "AuWELL.hpp"
#include <Source/IO/Adapters/AuIOAdapterRandom.hpp>

namespace Aurora::RNG
{
    struct RandomDevice :
        IRandomDevice,
        IO::Adapters::RandomStreamReader
    {
        RandomDevice();
        RandomDevice(const RandomDef & def);

        void     Read(Memory::MemoryViewWrite view) override;

        AuString            NextString(AuUInt32 uLength, ERngStringCharacters type) override;
        void                NextString(char *pString, AuUInt32 uLength, ERngStringCharacters type) override;
        AuUInt8             NextByte() override;
        bool                NextBoolean() override;
        AuUInt32            NextU32() override;
        AuUInt64            NextU64() override;
        AuUInt64            NextU64Range(AuUInt64 uMin, AuUInt64 uMax) override;
        AuInt64             NextI64Range(AuInt64 iMin, AuInt64 iMax) override;
        AuVec2              NextVec2(AuVec2 boundA, AuVec2 boundB) override;
        AuVec2              NextVec2Sorted(AuVec2 min, AuVec2 max) override;
        AuVec3              NextVec3(AuVec3 boundA, AuVec3 boundB) override;
        AuVec3              NextVec3Sorted(AuVec3 min, AuVec3 max) override;
        AuVec4              NextVec4(AuVec4 boundA, AuVec4 boundB) override;
        AuVec4              NextVec4Sorted(AuVec4 min, AuVec4 max) override;
        AuInt32             NextI32Range(AuInt32 iMin, AuInt32 iMax) override;
        AuUInt32            NextU32Range(AuUInt32 uMin, AuUInt32 uMax) override;
        AuList<AuInt32>     NextArrayI32Range(AuUInt32 uCount, AuInt32 iMin, AuInt32 iMax) override;
        AuList<AuUInt32>    NextArrayU32Range(AuUInt32 uCount, AuUInt32 uMin, AuUInt32 uMax) override;
        AuList<AuInt64>     NextArrayI64Range(AuUInt32 uCount, AuInt64 uMin, AuInt64 uMax) override;
        AuList<AuUInt64>    NextArrayU64Range(AuUInt32 uCount, AuUInt64 uMin, AuUInt64 uMax) override;
        AuList<AuUInt32>    NextArrayU32Mask(AuUInt32 uCount, AuUInt32 uMask) override;
        AuList<AuUInt64>    NextArrayU64Mask(AuUInt32 uCount, AuUInt64 uMask) override;
        AuList<double>      NextArrayDoubleRange(AuUInt32 uCount, double dMin, double dMax) override;
        AuList<double>      NextArrayDoubleRangeFast(AuUInt32 uCount, double dMin, double dMax) override;
        AuList<AuInt32>     NextArrayI32(AuUInt32 uCount) override;
        AuList<AuUInt32>    NextArrayU32(AuUInt32 uCount) override;
        AuList<AuInt64>     NextArrayI64(AuUInt32 uCount) override;
        AuList<AuUInt64>    NextArrayU64(AuUInt32 uCount) override;
        AuList<AuVec2>      NextArrayVec2(AuUInt32 uCount, AuVec2 boundA, AuVec2 boundB) override;
        AuList<AuVec2>      NextArrayVec2Fast(AuUInt32 uCount, AuVec2 boundA, AuVec2 boundB) override;
        AuList<AuVec2>      NextArrayVec2Sorted(AuUInt32 uCount, AuVec2 min, AuVec2 max) override;
        AuList<AuVec2>      NextArrayVec2SortedFast(AuUInt32 uCount, AuVec2 min, AuVec2 max) override;
        AuList<AuVec3>      NextArrayVec3(AuUInt32 uCount, AuVec3 boundA, AuVec3 boundB) override;
        AuList<AuVec3>      NextArrayVec3Fast(AuUInt32 uCount, AuVec3 boundA, AuVec3 boundB) override;
        AuList<AuVec3>      NextArrayVec3Sorted(AuUInt32 uCount, AuVec3 min, AuVec3 max) override;
        AuList<AuVec3>      NextArrayVec3SortedFast(AuUInt32 uCount, AuVec3 min, AuVec3 max) override;
        AuList<AuVec4>      NextArrayVec4(AuUInt32 uCount, AuVec4 boundA, AuVec4 boundB) override;
        AuList<AuVec4>      NextArrayVec4Fast(AuUInt32 uCount, AuVec4 boundA, AuVec4 boundB) override;
        AuList<AuVec4>      NextArrayVec4Sorted(AuUInt32 uCount, AuVec4 min, AuVec4 max) override;
        AuList<AuVec4>      NextArrayVec4SortedFast(AuUInt32 uCount, AuVec4 min, AuVec4 max) override;
        AuList<double>      NextArrayDouble(AuUInt32 uCount) override;
        AuList<double>      NextArrayDecimals(AuUInt32 uCount) override;
        AuList<double>      NextArrayDecimalsFast(AuUInt32 uCount) override;
        AuList<uuids::uuid> NextArrayUUIDs(AuUInt32 uCount) override;
        AuList<AuInt32>     NextArrayI32RangeFast(AuUInt32 uCount, AuInt32 iMin, AuInt32 iMax) override;
        AuList<AuUInt32>    NextArrayU32RangeFast(AuUInt32 uCount, AuUInt32 uMin, AuUInt32 uMax) override;
        AuList<AuInt64>     NextArrayI64RangeFast(AuUInt32 uCount, AuInt64 iMin, AuInt64 iMax) override;
        AuList<AuUInt64>    NextArrayU64RangeFast(AuUInt32 uCount, AuUInt64 uMin, AuUInt64 uMax) override;

        double   NextDecimal() override;
        double   NextNumber(double dMin, double dMax) override;
        AuUInt32 NextIndex(AuUInt32 uCount /* = max + 1*/) override;
        uuids::uuid NextUUID() override;
        IO::IStreamReader *ToStreamReader() override;
        AuMemoryViewRead ToSeed() override;
        
        void Init(const RandomDef &def);

    private:
        RandomDef def_;
        WELLRand fast_;

        bool DecGeometric(int x);
        double UniformFloatInRange(double udMin, double udMax);
    };
}