// 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.

// This file is copied from

// https://github.com/ClickHouse/ClickHouse/blob/master/src/AggregateFunctions/AggregateFunctionSum.cpp

// and modified by Doris

#include "exprs/aggregate/aggregate_function_sum.h"

#include "exprs/aggregate/aggregate_function_simple_factory.h"

#include "exprs/aggregate/helpers.h"

namespace doris {

void register_aggregate_function_sum(AggregateFunctionSimpleFactory& factory) {

    AggregateFunctionCreator creator = [&](const std::string& name, const DataTypes& types,

                                           const DataTypePtr& result_type,

                                           const bool result_is_nullable,

                                           const AggregateFunctionAttr& attr) {

        if (is_decimalv3(types[0]->get_primitive_type())) {

            // for decimalv3, use result type from FE plan

            return creator_with_type_list<TYPE_DECIMAL32, TYPE_DECIMAL64, TYPE_DECIMAL128I,

                                          TYPE_DECIMAL256>::

                    creator_with_result_type<AggregateFunctionSumDecimalV3>(

                            name, types, result_type, result_is_nullable, attr);

        } else {

            // TODO: for other types, also use result type from FE plan

            return creator_with_type_list<TYPE_TINYINT, TYPE_SMALLINT, TYPE_INT, TYPE_BIGINT,

                                          TYPE_LARGEINT, TYPE_FLOAT, TYPE_DOUBLE, TYPE_DECIMALV2>::

                    creator<AggregateFunctionSumSimple>(name, types, result_type,

                                                        result_is_nullable, attr);

        }

    };

    factory.register_function_both("sum", creator);

    factory.register_alias("sum", "sum0");

}

} // namespace doris