/*!
 * \copyright
 * Copyright (c) 2019-2020 Diality Inc. - All Rights Reserved.
 * THIS CODE MAY NOT BE COPIED OR REPRODUCED IN ANY FORM, IN PART OR IN
 * WHOLE, WITHOUT THE EXPLICIT PERMISSION OF THE COPYRIGHT OWNER.
 *
 * \file    BluetoothInterface.h
 * \author  (last)      Behrouz NematiPour
 * \author  (original)  Behrouz NematiPour
 * \date    (last)      22-Aug-2021
 * \date    (original)  22-Aug-2021
 */
#pragma once

// Qt
#include <QObject>
#include <QBluetoothLocalDevice>
#include <QBluetoothDeviceDiscoveryAgent>
#include <QLowEnergyController>

// Project
#include "main.h" // Doxygen : do not remove
#include "MBluetooth.h"

// Define
#define _BluetoothInterface Bluetooth::BluetoothInterface::I()

// forward declarations
class tst_initializations;

// namespace
namespace Bluetooth {

using namespace Model;
/*!
 * \brief The MessageAcknowModel class
 * \details The wrapper class of the AcknowModel which does the thread handling.
 */
class BluetoothInterface : public QObject
{
    Q_OBJECT

    // Singleton
    SINGLETON(BluetoothInterface)

    // friends
    friend class ::tst_initializations;

    QThread    *_thread     = nullptr;
    bool        _init       = false;

    QBluetoothLocalDevice          *_local  ;
    QBluetoothDeviceDiscoveryAgent *_agent  ;
    QLowEnergyController           *_device ; // Factory pointer
    QBluetoothDeviceInfo            _info   ;
    MBluetooth                      _model  ;
    MBluetooth::InterfaceStates     _state  ;

    bool                            _bpRead     = false;
    const quint16                   _interval   = 1000 ; // the interface timer base interval in mSec

protected:
    void timerEvent(QTimerEvent *event) override;

public slots:
    bool init();
    bool init(QThread &vThread);

    void doScan();

private slots:
    void quit();
    void onDestroy();

    // Local Device Slots
    void onLocalPairingFinish               (const QBluetoothAddress &vAddress, QBluetoothLocalDevice::Pairing vPairing);
    void onLocalPairingDisplayConfirmation  (const QBluetoothAddress &vAddress, const QString &vPin);
    void onLocalPairingDisplayPinCode       (const QBluetoothAddress &vAddress, const QString &vPin);
    void onLocalDeviceConnect               (const QBluetoothAddress &vAddress);
    void onLocalDeviceDisconnect            (const QBluetoothAddress &vAddress);
    void onLocalError                       (QBluetoothLocalDevice::Error vError);

    // Discovery Agent Slots
    void onAgentDiscoverDevice(const QBluetoothDeviceInfo &vDevice);
    void onAgentDiscoverFinish();
    void onAgentDiscoverCancel();
    void onAgentDiscoverError (QBluetoothDeviceDiscoveryAgent::Error vError);

private:
    void initConnections();

    void initThread(QThread &vThread);
    void quitThread();

    bool discoverStart  ();
    bool discoverFinish ();

    void notifyStateChange(const MBluetooth &vData);
signals:
    void    didStateChange(const Model::MBluetooth &vData);

    SAFE_CALL(start)
};
}