// Copyright 2023 PingCAP, Inc.
//
// Licensed 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.

#pragma once
#include <DataStreams/IBlockOutputStream.h>
#include <DataStreams/IProfilingBlockInputStream.h>
#include <Interpreters/ProcessList.h>


namespace DB
{


/// Proxy class which counts number of written block, rows, bytes
class CountingBlockOutputStream : public IBlockOutputStream
{
public:
    CountingBlockOutputStream(const BlockOutputStreamPtr & stream_)
        : stream(stream_)
    {}

    void setProgressCallback(const ProgressCallback & callback) { progress_callback = callback; }

    void setProcessListElement(ProcessListElement * elem) { process_elem = elem; }

    const Progress & getProgress() const { return progress; }

    Block getHeader() const override { return stream->getHeader(); }
    void write(const Block & block) override;

    void writePrefix() override { stream->writePrefix(); }
    void writeSuffix() override { stream->writeSuffix(); }
    void flush() override { stream->flush(); }
    void onProgress(const Progress & progress) override { stream->onProgress(progress); }
    String getContentType() const override { return stream->getContentType(); }

protected:
    BlockOutputStreamPtr stream;
    Progress progress;
    ProgressCallback progress_callback;
    ProcessListElement * process_elem = nullptr;
};

} // namespace DB