AuroraRuntime/Source/Compression/AuCompressionInterceptor.hpp

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

    File: AuCompressionInterceptor.hpp
    Date: 2022-9-14
    Author: Reece
***/
#pragma once

#include <IO/Protocol/Protocol.hpp>

namespace Aurora::Compression
{
    struct CompressionInterceptor : ICompressionInterceptor, IO::IStreamReader
    {
        CompressionInterceptor();

        void Init(const AuSPtr<ICompressionStream> &pStream,
                  const AuSPtr<BaseStream> &pBaseStream);

        bool OnDataAvailable(const AuSPtr<Memory::ByteBuffer> &pReadInByteBuffer,
                             const AuSPtr<Memory::ByteBuffer> &pWriteOutByteBuffer,
                             const AuSPtr<IO::Protocol::IProtocolPiece> &pProtocolPiece) override;
        
        inline virtual IO::EStreamError IsOpen() override;

        inline virtual IO::EStreamError Read(const Memory::MemoryViewStreamWrite &parameters) override;

        inline virtual void Close() override;

        void FlushNextFrame() override;

        bool ConfigureAutoFlushPerFrame(bool bAutoFlush) override;

        bool LimitHasHit() override;
        void LimitReset() override;
        void LimitSet(AuUInt uLength) override;
        bool LimitPassthroughOnOverflow(bool bPassthrough) override;
        AuUInt LimitGetIndex() override;

        bool HasFailed() override;

    private:
        bool bErrorFlag_ {};
        bool bSendFlush_ {};
        bool bAutoFlush_ {};
        AuSPtr<ICompressionStream> pStream_;
        AuSPtr<BaseStream> pBaseStream_;
        AuSPtr<Memory::ByteBuffer> pLastBuffer_;
        AuUInt uCountMax_ { AuNumericLimits<AuUInt>::max() };
        AuUInt uCount_ {};
        bool bPassthrough_ {};
    };
}