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

    File: Locale.hpp
    Date: 2021-6-11
    Author: Reece
***/
#pragma once

#if defined (VENDOR_GENERIC_MICROSOFT) || defined(VENDOR_CONSOLE_MICROSOFT)
    // https://docs.microsoft.com/en-us/gaming/gdk/_content/gc/system/overviews/localization/supported_nls_apis
    #define AU_HAS_MSFT_NATIONALLANGSUPPORT
    // https://docs.microsoft.com/en-us/windows/win32/intl/code-page-identifiers
    #define CP_LATIN_1 1252
    #define CP_UTF_16  1200
    #define CP_CHINESE 54936
    #define CP_SHIFTJIS 932
    // Ehhhh
    // https://en.wikipedia.org/wiki/Code_page_936_(Microsoft_Windows);
    // https://en.wikipedia.org/wiki/GBK_(character_encoding)
    //  `Since its initial release in 1993, GBK has been extended by Microsoft in Code page 936/1386, which was then extended into GBK 1.0`
    #define CP_2312_LIMITED_GBK 936
#endif

#include "Encoding/EncoderAdapter.hpp"

namespace Aurora::Locale
{
    void Init();

    ECodePage GetInternalCodePage();
    AuString const &GetInternalCodePageString();
   
    

    /// bool TranslateNativeStringBuffer(EncodedTextStream &stream, AuString &str);
    
    /// Translates a UTF-8 string to something the system codepage won't complain about
    /// size should be at least utf8.size() * 4 for eUTF32 systems
    /// AuUInt EncodeStringToSysCP(const AuString &utf8, AuUInt8 *encoded, AuUInt size);

    /// Self-explanatory 
    /// returns the amount of bytes written
    /// AuUInt EncodeStringToCP(const AuString &utf8, ECodePage page, AuUInt8 *encoded, AuUInt size);

    /// Alternative TranslateNativeStringBuffer without slow AuString allocations
    /// returns the amount of bytes written
    /// AuUInt TranslateNativeStringBuffer(EncodedTextStream &stream, void *out, AuUInt len, ECodePage guess = ECodePage::eNotRead);

    /// Once again, this is another slow API for decoding a buffer back to memory
    /// For additional endianness optimization hackery, the read pointer _must_ be writable 
    /// The odds are you don't care if the original buffer gets mangled during decode; so 
    ///  lets swap the endian inside caller provided memory to save on allocation time
    /// bool DecodeStringToUTF8(AuUInt8 *readWriteHead, int length, AuString &decoded, ECodePage guess = ECodePage::eNotRead);
}

#include "Encoding/Encoding.hpp"