/*
 * Copyright (C) 2017 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.
 */

#include <cerrno>
#include <vector>

#include <android-base/logging.h>

#include "Thermal.h"
#include "thermal-helper.h"

namespace android {
namespace hardware {
namespace thermal {
namespace V1_0 {
namespace implementation {

Thermal::Thermal() : enabled(initThermal()) {}

// Methods from ::android::hardware::thermal::V1_0::IThermal follow.
Return<void> Thermal::getTemperatures(getTemperatures_cb _hidl_cb) {
    ThermalStatus status;
    status.code = ThermalStatusCode::SUCCESS;
    hidl_vec<Temperature> temperatures;
    temperatures.resize(kTemperatureNum);

    if (!enabled) {
        status.code = ThermalStatusCode::FAILURE;
        status.debugMessage = "Unsupported hardware";
        _hidl_cb(status, temperatures);
        return Void();
    }

    ssize_t ret = fillTemperatures(&temperatures);
    if (ret < 0) {
        status.code = ThermalStatusCode::FAILURE;
        status.debugMessage = strerror(-ret);
    }
    _hidl_cb(status, temperatures);

    for (auto& t : temperatures) {
        LOG(DEBUG) << "getTemperatures "
                   << " Type: " << static_cast<int>(t.type)
                   << " Name: " << t.name
                   << " CurrentValue: " << t.currentValue
                   << " ThrottlingThreshold: " << t.throttlingThreshold
                   << " ShutdownThreshold: " << t.shutdownThreshold
                   << " VrThrottlingThreshold: " << t.vrThrottlingThreshold;
    }

    return Void();
}

Return<void> Thermal::getCpuUsages(getCpuUsages_cb _hidl_cb) {
    ThermalStatus status;
    status.code = ThermalStatusCode::SUCCESS;
    hidl_vec<CpuUsage> cpuUsages;
    cpuUsages.resize(kCpuNum);

    if (!enabled) {
        status.code = ThermalStatusCode::FAILURE;
        status.debugMessage = "Unsupported hardware";
        _hidl_cb(status, cpuUsages);
        return Void();
    }

    ssize_t ret = fillCpuUsages(&cpuUsages);
    if (ret < 0) {
        status.code = ThermalStatusCode::FAILURE;
        status.debugMessage = strerror(-ret);
    }

    for (auto& u : cpuUsages) {
        LOG(DEBUG) << "getCpuUsages "
                   << " Name: " << u.name
                   << " Active: " << u.active
                   << " Total: " << u.total
                   << " IsOnline: " << u.isOnline;
    }

    _hidl_cb(status, cpuUsages);
    return Void();
}

Return<void> Thermal::getCoolingDevices(getCoolingDevices_cb _hidl_cb) {
    ThermalStatus status;
    status.code = ThermalStatusCode::SUCCESS;
    hidl_vec<CoolingDevice> coolingDevices;

    if (!enabled) {
        status.code = ThermalStatusCode::FAILURE;
        status.debugMessage = "Unsupported hardware";
        _hidl_cb(status, coolingDevices);
        return Void();
    }

    LOG(DEBUG) << "No Cooling Device";
    _hidl_cb(status, coolingDevices);
    return Void();
}

}  // namespace implementation
}  // namespace V1_0
}  // namespace thermal
}  // namespace hardware
}  // namespace android