#ifndef VBLUETOOTH_H
#define VBLUETOOTH_H

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

// Project
#include "VBluetoothDeviceInfo.h"
#include "GuiController.h"

using namespace Gui;
using namespace Storage;

// forward declarations
class tst_views;

namespace View {

/*!
 * \brief The VBluetooth class
 * Interface between the user and underlying bluetooth classes
 * \details Exposes a list of unpaired and paired bluetooth devices as well as the paired and connection
 * status of each devices. Interfaces with the bluetooth scanner class to initiate scans, pair, and connect to devices
 *
 */
class VBluetooth : public QObject
{
    Q_OBJECT
public:
    explicit VBluetooth(QObject *parent = nullptr);

protected:
    Q_PROPERTY(QVariant devices READ doGetDevices NOTIFY didDevicesChanged)
    Q_PROPERTY(QVariant pairedDevices READ doGetPairedDevices NOTIFY didPairedDevicesChanged)
    Q_PROPERTY(QVariant status READ getStatus NOTIFY didStatusChanged)

public slots:
    void doScanForDevices();
    QVariant doGetDevices();
    QVariant doGetPairedDevices();
    void doSelectDevice(const QString &addr, const QString &name);
    void doSaveMyDevices(const QString &path = Bluetooth_Saved_Devices_Path_JSON);

signals:
    void didDevicesChanged();
    void didSelectDevice(const QString &addr, const QString &name);
    void didScanFinished();
    void didStatusChanged();
    void didRequestScanForDevices();
    void didPairedDevicesChanged();
    void didRequestConcurrentSave(QString, QString, bool);
    void didRequestReconnectToDevice(QBluetoothDeviceInfo);

private:
    QList<QObject *> _unpairedDevices;
    QList<QObject *> _pairedDevices;
    QString _status;
    const QString _lastSelectedDeviceAddrKey = "LastSelectedDevice";
    VBluetoothDeviceInfo *_lastSelectedDevice = nullptr;

    QString getStatus() { return _status; }
    QString controllerErrorToString(QLowEnergyController::Error error);
    bool isDeviceAlreadyPaired(const QBluetoothDeviceInfo &deviceInfo);
    void removeFromDevices(const VBluetoothDeviceInfo *info);
    void setDeviceConnected(const QBluetoothDeviceInfo &deviceInfo, const bool &connected);
    void notifyStatusUpdate(const QString &message);

private slots:
    void onScanForDevicesError(QBluetoothDeviceDiscoveryAgent::Error error);
    void onScanForDevicesFinished();
    void onDeviceDiscovered(const QBluetoothDeviceInfo &device);
    void onConnectingToDevice();
    void onControllerError(QLowEnergyController::Error error);
    void onConnectedToDevice(const QBluetoothDeviceInfo &deviceInfo);
    void onDisconnectedFromDevice(const QBluetoothDeviceInfo &deviceInfo);
    void onLoadMyDevices(const QString &path = Bluetooth_Saved_Devices_Path_JSON);
    void onReconnectToDevice(const VBluetoothDeviceInfo *deviceInfo);
    void onLoadAndConnectToLastSelectedDevice(const QJsonObject &obj);
};
}
#endif // VBLUETOOTH_H