// 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 "exprs/function/function.h"

namespace doris {

namespace io {

class FileSystem;

}

class FunctionToFile : public IFunction {

public:

    static constexpr auto name = "to_file";

    static FunctionPtr create() { return std::make_shared<FunctionToFile>(); }

    String get_name() const override { return name; }

    size_t get_number_of_arguments() const override { return 2; }

    ColumnNumbers get_arguments_that_are_always_constant() const override { return {0}; }

    bool use_default_implementation_for_constants() const override { return false; }

    bool use_default_implementation_for_nulls() const override { return false; }

    bool is_blockable() const override { return true; }

    DataTypePtr get_return_type_impl(const ColumnsWithTypeAndName& arguments) const override;

    Status open(FunctionContext* context, FunctionContext::FunctionStateScope scope) override;

    Status close(FunctionContext* context, FunctionContext::FunctionStateScope scope) override;

    Status execute_impl(FunctionContext* context, Block& block, const ColumnNumbers& arguments,

                        uint32_t result, size_t input_rows_count) const override;

protected:

    virtual Status create_filesystem(const TS3Resource& resource, const std::string& uri,

                                     std::shared_ptr<io::FileSystem>* filesystem) const;

};

} // namespace doris