// SPDX-License-Identifier: LGPL-3.0-or-later

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
*
* Copyright (C) 2013 - 2024, nymea GmbH
* Copyright (C) 2024 - 2025, chargebyte austria GmbH
*
* This file is part of libnymea-networkmanager.
*
* libnymea-networkmanager is free software: you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation, either version 3
* of the License, or (at your option) any later version.
*
* libnymea-networkmanager 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with libnymea-networkmanager. If not, see <https://www.gnu.org/licenses/>.
*
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

#ifndef WIRELESSSERVICE_H
#define WIRELESSSERVICE_H

#include <QObject>
#include <QVariantMap>
#include <QLowEnergyService>
#include <QLowEnergyServiceData>

#include "../networkmanager.h"
#include "../wirelessaccesspoint.h"
#include "../wirelessnetworkdevice.h"

class WirelessService : public QObject
{
    Q_OBJECT

public:
    enum WirelessServiceCommand {
        WirelessServiceCommandInvalid               = -1,
        WirelessServiceCommandGetNetworks           = 0x00,
        WirelessServiceCommandConnect               = 0x01,
        WirelessServiceCommandDisconnect            = 0x03,
        WirelessServiceCommandScan                  = 0x04,
        WirelessServiceCommandGetCurrentConnection  = 0x05,
        WirelessServiceCommandStartAccessPoint      = 0x06
    };
    Q_ENUM(WirelessServiceCommand)

    enum WirelessServiceResponse {
        WirelessServiceResponseSuccess                     = 0x00,
        WirelessServiceResponseIvalidCommand               = 0x01,
        WirelessServiceResponseIvalidParameters            = 0x02,
        WirelessServiceResponseNetworkManagerNotAvailable  = 0x03,
        WirelessServiceResponseWirelessNotAvailable        = 0x04,
        WirelessServiceResponseWirelessNotEnabled          = 0x05,
        WirelessServiceResponseNetworkingNotEnabled        = 0x06,
        WirelessServiceResponseUnknownError                = 0x07
    };
    Q_ENUM(WirelessServiceResponse)

    explicit WirelessService(QLowEnergyService *service, NetworkManager *networkManager, QObject *parent = nullptr);
    QLowEnergyService *service();

    static QLowEnergyServiceData serviceData(NetworkManager *networkManager);

private:
    QLowEnergyService *m_service = nullptr;
    NetworkManager *m_networkManager = nullptr;
    WirelessNetworkDevice *m_device = nullptr;

    bool m_readingInputData = false;
    QByteArray m_inputDataStream;

    WirelessServiceResponse checkWirelessErrors();

    // Note: static to be available in serviceData
    static QByteArray getWirelessNetworkDeviceState(const NetworkDevice::NetworkDeviceState &state);
    static QByteArray getWirelessMode(WirelessNetworkDevice::WirelessMode mode);

    void streamData(const QVariantMap &responseMap);

    QVariantMap createResponse(const WirelessServiceCommand &command, const WirelessServiceResponse &responseCode = WirelessServiceResponseSuccess);

    // Methods
    void commandGetNetworks(const QVariantMap &request);
    void commandConnect(const QVariantMap &request);
    void commandDisconnect(const QVariantMap &request);
    void commandScan(const QVariantMap &request);
    void commandGetCurrentConnection(const QVariantMap &request);
    void commandStartAccessPoint(const QVariantMap &request);

private slots:
    // Service
    void characteristicChanged(const QLowEnergyCharacteristic &characteristic, const QByteArray &value);
    void characteristicRead(const QLowEnergyCharacteristic &characteristic, const QByteArray &value);
    void characteristicWritten(const QLowEnergyCharacteristic &characteristic, const QByteArray &value);
    void descriptorRead(const QLowEnergyDescriptor &descriptor, const QByteArray &value);
    void descriptorWritten(const QLowEnergyDescriptor &descriptor, const QByteArray &value);
    void serviceError(QLowEnergyService::ServiceError error);

    // Commands
    void processCommand(const QVariantMap &request);

    // Wireless network device
    void onWirelessDeviceBitRateChanged(const int &bitRate);
    void onWirelessDeviceStateChanged(const NetworkDevice::NetworkDeviceState &state);
    void onWirelessModeChanged(WirelessNetworkDevice::WirelessMode mode);

};

#endif // WIRELESSSERVICE_H