#include "VBluetooth.h"
#include "BLEScanner.h"

// Qt

// Project

using namespace View;

VBluetooth::VBluetooth(QObject *parent) : QObject(parent)
{
    connect(&_BLEScanner, SIGNAL(didReceiveScanForDevicesError(QBluetoothDeviceDiscoveryAgent::Error)),
            this, SLOT(onScanForDevicesError(QBluetoothDeviceDiscoveryAgent::Error)));

    connect(&_BLEScanner, SIGNAL(didFinishScan()),
            this, SLOT(onScanForDevicesFinished()));

    connect(&_BLEScanner, SIGNAL(didDiscoverDevice(QBluetoothDeviceInfo)),
            this, SLOT(onDeviceDiscovered(const QBluetoothDeviceInfo)));

    connect(this, SIGNAL(didSelectDevice(const QString)),
            &_BLEScanner, SLOT(doSelectDevice(const QString)));

    connect(this, SIGNAL(didRequestScanForDevices()),
            &_BLEScanner, SLOT(doScanForDevices()));
}

/*!
 * \brief VBluetooth::onScanForDevices
 * Slot for when the user starts scanning for devices.
 * Updates the status and emits a signal to the BLEScanner to
 * begin a new scan.
 */
void VBluetooth::doScanForDevices()
{
    bleDevices.clear();
    emit didDevicesChanged();
    emit didRequestScanForDevices();
    status = "Scanning...";
    emit didStatusChanged();
}

/*!
 * \brief VBluetooth::onScanForDevicesError
 *  Slot called when the BLEScanner enounters an error
 * while scanning for devices
 * \param error
 */
void VBluetooth::onScanForDevicesError(QBluetoothDeviceDiscoveryAgent::Error error)
{
    switch (error) {
    case QBluetoothDeviceDiscoveryAgent::PoweredOffError:
        status = tr("Error: The bluetooth module is powered off.");
        break;
    default:
        status = tr("Error: Scan for devices error.");
        break;
    }
    emit didStatusChanged();
}

/*!
 * \brief VBluetooth::onDeviceDiscovered
 * Slot for when a device is discovered by the BLEScanner.
 * \param device - the BLE Device info of the discovered device
 */
void VBluetooth::onDeviceDiscovered(const QBluetoothDeviceInfo &device)
{
    VBluetoothDeviceInfo *info = new VBluetoothDeviceInfo(device);
    bleDevices.append(info);
    qDebug() << "VBluetooth: Discovered " << device.address();
    emit didDevicesChanged();
}

/*!
 * \brief VBluetooth::onScanForDevicesFinished
 *  Slot called when the scan is finished. Updates the scanning status.
 */
void VBluetooth::onScanForDevicesFinished()
{
    emit didScanFinished();
    status = "Scan Finished.";
    emit didStatusChanged();
}

/*!
 * \brief VBluetooth::getDevices
 * Gets the BLE modelData for QML
 * \return QVariant - the modelData
 */
QVariant VBluetooth::doGetDevices()
{
    return QVariant::fromValue(bleDevices);
}

/*!
 * \brief VBluetooth::onSelectedDevice
 *  Emits a signal that the device was selected
 * \param addr - the selected BLE mac address
 */
void VBluetooth::doSelectDevice(const QString &addr)
{
    emit didSelectDevice(addr);
}