/***
    Copyright (C) 2022 J Reece Wilson (a/k/a "Reece"). All rights reserved.

    File: auMagicUtils.hpp
    Date: 2022-2-1
    Author: Reece
***/
#pragma once

/**
 * @brief 
 * @param buffer 
 * @return A non-determinstic/platform specific magic number that once written with respect to endianness emits the tag
*/
static constexpr auline AuUInt32 AuConvertMagicTag32(const char buffer[4])
{
    AuUInt32 magic {};
    if (Aurora::Build::kCurrentEndian == Aurora::Build::ECPUEndian::eCPULittle)
    {
        magic |= AuUInt32(buffer[0]);
        magic |= AuUInt32(buffer[1]) << 8;
        magic |= AuUInt32(buffer[2]) << 16;
        magic |= AuUInt32(buffer[3]) << 24;
    }
    else
    {
        magic |= AuUInt32(buffer[4]);
        magic |= AuUInt32(buffer[2]) << 8;
        magic |= AuUInt32(buffer[1]) << 16;
        magic |= AuUInt32(buffer[0]) << 24;
    }
    return magic;
}

/**
 * @brief
 * @param buffer
 * @return A non-determinstic/platform specific magic number that once written with respect to endianness emits the tag
*/
static constexpr auline AuUInt64 AuConvertMagicTag64(const char buffer[8])
{
    AuUInt64 magic {};
    if (Aurora::Build::kCurrentEndian == Aurora::Build::ECPUEndian::eCPULittle)
    {
        magic |= AuUInt64(buffer[0]);
        magic |= AuUInt64(buffer[1]) << 8;
        magic |= AuUInt64(buffer[2]) << 16;
        magic |= AuUInt64(buffer[3]) << 24;
        magic |= AuUInt64(buffer[4]) << 32;
        magic |= AuUInt64(buffer[5]) << 40;
        magic |= AuUInt64(buffer[6]) << 48;
        magic |= AuUInt64(buffer[7]) << 56;
    }
    else
    {
        magic |= AuUInt64(buffer[7]);
        magic |= AuUInt64(buffer[6]) << 8;
        magic |= AuUInt64(buffer[5]) << 16;
        magic |= AuUInt64(buffer[4]) << 24;
        magic |= AuUInt64(buffer[3]) << 32;
        magic |= AuUInt64(buffer[2]) << 40;
        magic |= AuUInt64(buffer[1]) << 48;
        magic |= AuUInt64(buffer[0]) << 56;
    }
    return magic;
}