/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "paimon/common/sst/block_trailer.h"

#include "fmt/format.h"
#include "paimon/common/memory/memory_slice_output.h"

namespace paimon {

std::unique_ptr<BlockTrailer> BlockTrailer::ReadBlockTrailer(MemorySliceInput* input) {
    auto compress = input->ReadUnsignedByte();
    auto crc32c = input->ReadInt();
    return std::make_unique<BlockTrailer>(compress, crc32c);
}

int32_t BlockTrailer::Crc32c() const {
    return crc32c_;
}

int8_t BlockTrailer::CompressionType() const {
    return compression_type_;
}

std::string BlockTrailer::ToString() const {
    return fmt::format("BlockTrailer{{compression_type={}, crc32c_={:#x}}}",
                       std::to_string(compression_type_), static_cast<uint32_t>(crc32c_));
}

MemorySlice BlockTrailer::WriteBlockTrailer(MemoryPool* pool) {
    MemorySliceOutput output(ENCODED_LENGTH, pool);
    output.WriteValue(compression_type_);
    output.WriteValue(crc32c_);
    return output.ToSlice();
}
}  // namespace paimon