/*
 * Copyright (C) 2020 The Android Open Source Project
 *
 * 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.
 */

#pragma once

#include <PowerStatsAidl.h>

namespace aidl {
namespace android {
namespace hardware {
namespace power {
namespace stats {

class GenericStateResidencyDataProvider : public PowerStats::IStateResidencyDataProvider {
  public:
    class StateResidencyConfig {
      public:
        std::string name;
        std::string header;

        bool entryCountSupported;
        std::string entryCountPrefix;
        std::function<uint64_t(uint64_t)> entryCountTransform;

        bool totalTimeSupported;
        std::string totalTimePrefix;
        std::function<uint64_t(uint64_t)> totalTimeTransform;

        bool lastEntrySupported;
        std::string lastEntryPrefix;
        std::function<uint64_t(uint64_t)> lastEntryTransform;
    };

    class PowerEntityConfig {
      public:
        PowerEntityConfig(const std::vector<StateResidencyConfig> &stateResidencyConfigs,
                          const std::string &name, const std::string &header = "")
            : mStateResidencyConfigs(std::move(stateResidencyConfigs)),
              mName(std::move(name)),
              mHeader(std::move(header)) {}
        const std::vector<StateResidencyConfig> mStateResidencyConfigs;
        const std::string mName;
        const std::string mHeader;
    };

    GenericStateResidencyDataProvider(const std::string &path,
                                      const std::vector<PowerEntityConfig> &configs)
        : mPath(std::move(path)), mPowerEntityConfigs(std::move(configs)) {}
    ~GenericStateResidencyDataProvider() = default;

    // Methods from PowerStats::IStateResidencyDataProvider
    bool getStateResidencies(
            std::unordered_map<std::string, std::vector<StateResidency>> *residencies) override;
    std::unordered_map<std::string, std::vector<State>> getInfo() override;

  private:
    const std::string mPath;
    const std::vector<PowerEntityConfig> mPowerEntityConfigs;
};

std::vector<GenericStateResidencyDataProvider::StateResidencyConfig>
generateGenericStateResidencyConfigs(
        const GenericStateResidencyDataProvider::StateResidencyConfig &stateConfig,
        const std::vector<std::pair<std::string, std::string>> &stateHeaders);

}  // namespace stats
}  // namespace power
}  // namespace hardware
}  // namespace android
}  // namespace aidl