library/cpp/tvmauth/client/misc/roles/decoder.h


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#pragma once

#include <util/generic/string.h>

namespace NTvmAuth::NRoles {
    class TDecoder {
    public:
        static TString Decode(const TStringBuf codec, TString&& blob);

    public:
        struct TCodecInfo {
            TStringBuf Type;
            size_t Size = 0;
            TStringBuf Sha256;

            bool operator==(const TCodecInfo& o) const {
                return Type == o.Type &&
                       Size == o.Size &&
                       Sha256 == o.Sha256;
            }
        };

        static TCodecInfo ParseCodec(TStringBuf codec);
        static TString DecodeImpl(TStringBuf codec, const TString& blob);
        static TString DecodeBrolti(const TString& blob);
        static TString DecodeGzip(const TString& blob);
        static TString DecodeZstd(const TString& blob);

        static void VerifySize(const TStringBuf decoded, size_t expected);
        static void VerifyChecksum(const TStringBuf decoded, const TStringBuf expected);
    };
}