/**
 *   Copyright 2015 Pivotal Software, 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.
 **/

#include "expressions/aggregation/AggregateFunction.hpp"

#include <type_traits>

#include "expressions/aggregation/AggregateFunction.pb.h"
#include "expressions/aggregation/AggregationID.hpp"

#include "glog/logging.h"

namespace quickstep {

serialization::AggregateFunction AggregateFunction::getProto() const {
  serialization::AggregateFunction proto;
  switch (agg_id_) {
    case AggregationID::kAvg:
      proto.set_aggregation_id(serialization::AggregateFunction::AVG);
      break;
    case AggregationID::kCount:
      proto.set_aggregation_id(serialization::AggregateFunction::COUNT);
      break;
    case AggregationID::kMax:
      proto.set_aggregation_id(serialization::AggregateFunction::MAX);
      break;
    case AggregationID::kMin:
      proto.set_aggregation_id(serialization::AggregateFunction::MIN);
      break;
    case AggregationID::kSum:
      proto.set_aggregation_id(serialization::AggregateFunction::SUM);
      break;
    default: {
      LOG(FATAL) << "Unrecognized AggregationID: "
                 << static_cast<std::underlying_type<AggregationID>::type>(agg_id_);
    }
  }

  return proto;
}

}  // namespace quickstep