// 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.

#pragma once

#include <gen_cpp/PaloInternalService_types.h>

#include <stddef.h>

#include <memory>

#include <vector>

#include "common/status.h"

#include "core/data_type/data_type.h"

#include "core/data_type/define_primitive_type.h"

#include "exec/sink/writer/result_writer.h"

#include "exprs/vexpr_fwd.h"

#include "runtime/result_block_buffer.h"

#include "runtime/runtime_profile.h"

#include "util/mysql_row_buffer.h"

namespace doris {

class RuntimeState;

class Block;

class GetResultBatchCtx {

public:

    using ResultType = TFetchDataResult;

    ENABLE_FACTORY_CREATOR(GetResultBatchCtx)

    GetResultBatchCtx(PFetchDataResult* result, google::protobuf::Closure* done)

            : _result(result), _done(done) {}

#ifdef BE_TEST

    GetResultBatchCtx() = default;

#endif

    MOCK_FUNCTION ~GetResultBatchCtx() = default;

    MOCK_FUNCTION void on_failure(const Status& status);

    MOCK_FUNCTION void on_close(int64_t packet_seq, int64_t returned_rows = 0);

    MOCK_FUNCTION Status on_data(const std::shared_ptr<TFetchDataResult>& t_result,

                                 int64_t packet_seq, ResultBlockBufferBase* buffer);

private:

#ifndef BE_TEST

    const int32_t _max_msg_size = std::numeric_limits<int32_t>::max();

#else

    int32_t _max_msg_size = std::numeric_limits<int32_t>::max();

#endif

    PFetchDataResult* _result = nullptr;

    google::protobuf::Closure* _done = nullptr;

};

using MySQLResultBlockBuffer = ResultBlockBuffer<GetResultBatchCtx>;

class VMysqlResultWriter final : public ResultWriter {

public:

    VMysqlResultWriter(std::shared_ptr<ResultBlockBufferBase> sinker,

                       const VExprContextSPtrs& output_vexpr_ctxs, RuntimeProfile* parent_profile,

                       bool is_binary_format);

    Status init(RuntimeState* state) override;

    Status write(RuntimeState* state, Block& block) override;

    Status close(Status status) override;

private:

    void _init_profile();

    Status _write_one_block(RuntimeState* state, Block& block);

    std::shared_ptr<MySQLResultBlockBuffer> _sinker = nullptr;

    const VExprContextSPtrs& _output_vexpr_ctxs;

    RuntimeProfile* _parent_profile; // parent profile from result sink. not owned

    // total time cost on append batch operation

    RuntimeProfile::Counter* _append_row_batch_timer = nullptr;

    // tuple convert timer, child timer of _append_row_batch_timer

    RuntimeProfile::Counter* _convert_tuple_timer = nullptr;

    // file write timer, child timer of _append_row_batch_timer

    RuntimeProfile::Counter* _result_send_timer = nullptr;

    // number of sent rows

    RuntimeProfile::Counter* _sent_rows_counter = nullptr;

    // size of sent data

    RuntimeProfile::Counter* _bytes_sent_counter = nullptr;

    // If true, no block will be sent

    bool _is_dry_run = false;

    uint64_t _bytes_sent = 0;

    const bool _is_binary_format;

};

} // namespace doris