////////////////////////////////////////////////////////////////////////////////
/// DISCLAIMER
///
/// Copyright 2022 ArangoDB GmbH, Cologne, Germany
///
/// 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.
///
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
///
/// @author Andrey Abramov
////////////////////////////////////////////////////////////////////////////////

#pragma once

#include "search/filter.hpp"

namespace irs {

class AllDocsProvider {
 public:
  using Ptr = std::unique_ptr<FilterWithBoost>;
  using ProviderFunc = std::function<Ptr(score_t)>;

  static Ptr Default(score_t boost);

  Ptr MakeAllDocsFilter(score_t boost) const { return all_docs_(boost); }

  void SetProvider(ProviderFunc&& provider) {
    all_docs_ = provider ? std::move(provider) : ProviderFunc{&Default};
  }

 private:
  ProviderFunc all_docs_{&Default};
};

}  // namespace irs
