/*
 * Copyright 2019-2020 PixlOne
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
#include "DeviceStatus.h"
#include "../util/task.h"

#define EVENTHANDLER_NAME "devicestatus"

using namespace logid::features;
using namespace logid::backend;

DeviceStatus::DeviceStatus(logid::Device *dev) : DeviceFeature(dev)
{
    try {
        _wireless_device_status =std::make_shared<
                hidpp20::WirelessDeviceStatus>(&dev->hidpp20());
    } catch(hidpp20::UnsupportedFeature& e) {
        throw UnsupportedFeature();
    }
}

void DeviceStatus::configure()
{
    // Do nothing
}

void DeviceStatus::listen()
{
    if(_device->hidpp20().eventHandlers().find(EVENTHANDLER_NAME) ==
       _device->hidpp20().eventHandlers().end()) {
        auto handler = std::make_shared<hidpp::EventHandler>();
        handler->condition = [index=_wireless_device_status->featureIndex()](
                const hidpp::Report& report)->bool {
            return report.feature() == index && report.function() ==
                hidpp20::WirelessDeviceStatus::StatusBroadcast;
        };

        handler->callback = [dev=this->_device](
                const hidpp::Report& report)->void {
            auto event = hidpp20::WirelessDeviceStatus::statusBroadcastEvent(
                    report);
            if(event.reconfNeeded)
                task::spawn([dev](){ dev->wakeup(); });
        };

        _device->hidpp20().addEventHandler(EVENTHANDLER_NAME, handler);
    }
}