path: root/src/bluetooth/qlowenergycontrollernew.cpp

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#include "qlowenergycontrollernew.h"
#include "qlowenergycontrollernew_p.h"

#include <QtBluetooth/QBluetoothLocalDevice>

#include <algorithm>

QT_BEGIN_NAMESPACE

void QLowEnergyControllerNewPrivate::setError(
        QLowEnergyControllerNew::Error newError)
{
    Q_Q(QLowEnergyControllerNew);
    error = newError;

    switch (newError) {
    case QLowEnergyControllerNew::UnknownRemoteDeviceError:
        errorString = QLowEnergyControllerNew::tr("Remote device cannot be found");
        break;
    case QLowEnergyControllerNew::InvalidBluetoothAdapterError:
        errorString = QLowEnergyControllerNew::tr("Cannot find local adapter");
        break;
    case QLowEnergyControllerNew::NetworkError:
        errorString = QLowEnergyControllerNew::tr("Error occurred during connection I/O");
        break;
    case QLowEnergyControllerNew::UnknownError:
    default:
        errorString = QLowEnergyControllerNew::tr("Unknown Error");
        break;
    }

    emit q->error(newError);
}

bool QLowEnergyControllerNewPrivate::isValidLocalAdapter()
{
    if (localAdapter.isNull())
        return false;

    const QList<QBluetoothHostInfo> foundAdapters = QBluetoothLocalDevice::allDevices();
    bool adapterFound = false;

    foreach (const QBluetoothHostInfo &info, foundAdapters) {
        if (info.address() == localAdapter) {
            adapterFound = true;
            break;
        }
    }

    return adapterFound;
}

void QLowEnergyControllerNewPrivate::setState(
        QLowEnergyControllerNew::ControllerState newState)
{
    Q_Q(QLowEnergyControllerNew);
    if (state == newState)
        return;

    state = newState;
    emit q->stateChanged(state);
}

void QLowEnergyControllerNewPrivate::invalidateServices()
{
    foreach (const QSharedPointer<QLowEnergyServicePrivate> service, serviceList.values()) {
        service->setController(0);
        service->setState(QLowEnergyService::InvalidService);
    }

    serviceList.clear();
}

QSharedPointer<QLowEnergyServicePrivate> QLowEnergyControllerNewPrivate::serviceForHandle(
        QLowEnergyHandle handle)
{
    foreach (QSharedPointer<QLowEnergyServicePrivate> service, serviceList.values())
        if (service->startHandle <= handle && handle <= service->endHandle)
            return service;

    return QSharedPointer<QLowEnergyServicePrivate>();
}

/*!
    Returns a valid characteristic if the given handle is the
    handle of the characteristic itself or one of its descriptors
 */
QLowEnergyCharacteristic QLowEnergyControllerNewPrivate::characteristicForHandle(
        QLowEnergyHandle handle)
{
    QSharedPointer<QLowEnergyServicePrivate> service = serviceForHandle(handle);
    if (service.isNull())
        return QLowEnergyCharacteristic();

    if (service->characteristicList.isEmpty())
        return QLowEnergyCharacteristic();

    // check whether it is the handle of a characteristic header
    if (service->characteristicList.contains(handle))
        return QLowEnergyCharacteristic(service, handle);

    // check whether it is the handle of the characteristic value or its descriptors
    QList<QLowEnergyHandle> charHandles = service->characteristicList.keys();
    std::sort(charHandles.begin(), charHandles.end());
    for (int i = charHandles.size() - 1; i >= 0; i--) {
        if (charHandles.at(i) > handle)
            continue;

        return QLowEnergyCharacteristic(service, charHandles.at(i));
    }

    return QLowEnergyCharacteristic();
}

/*!
    Returns a valid descriptor if \a handle blongs to a descriptor;
    otherwise an invalid one.
 */
QLowEnergyDescriptor QLowEnergyControllerNewPrivate::descriptorForHandle(
        QLowEnergyHandle handle)
{
    const QLowEnergyCharacteristic matchingChar = characteristicForHandle(handle);
    if (!matchingChar.isValid())
        return QLowEnergyDescriptor();

    const QLowEnergyServicePrivate::CharData charData = matchingChar.
            d_ptr->characteristicList[matchingChar.attributeHandle()];

    if (charData.descriptorList.contains(handle))
        return QLowEnergyDescriptor(matchingChar.d_ptr, matchingChar.attributeHandle(),
                                    handle);

    return QLowEnergyDescriptor();
}

void QLowEnergyControllerNewPrivate::updateValueOfCharacteristic(
        QLowEnergyHandle charHandle, const QByteArray &value)
{
    QSharedPointer<QLowEnergyServicePrivate> service = serviceForHandle(charHandle);
    if (!service.isNull() && service->characteristicList.contains(charHandle))
        service->characteristicList[charHandle].value = value;
}

void QLowEnergyControllerNewPrivate::updateValueOfDescriptor(
        QLowEnergyHandle charHandle, QLowEnergyHandle descriptorHandle,
        const QByteArray &value)
{
    QSharedPointer<QLowEnergyServicePrivate> service = serviceForHandle(charHandle);
    if (service.isNull() || !service->characteristicList.contains(charHandle))
        return;

    if (!service->characteristicList[charHandle].descriptorList.contains(descriptorHandle))
        return;

    service->characteristicList[charHandle].descriptorList[descriptorHandle].value = value;
}

QLowEnergyControllerNew::QLowEnergyControllerNew(
                            const QBluetoothAddress &remoteDevice,
                            QObject *parent)
    : QObject(parent), d_ptr(new QLowEnergyControllerNewPrivate())
{
    Q_D(QLowEnergyControllerNew);
    d->q_ptr = this;
    d->remoteDevice = remoteDevice;
    d->localAdapter = QBluetoothLocalDevice().address();
}

QLowEnergyControllerNew::QLowEnergyControllerNew(
                            const QBluetoothAddress &remoteDevice,
                            const QBluetoothAddress &localDevice,
                            QObject *parent)
    : QObject(parent), d_ptr(new QLowEnergyControllerNewPrivate())
{
    Q_D(QLowEnergyControllerNew);
    d->q_ptr = this;
    d->remoteDevice = remoteDevice;
    d->localAdapter = localDevice;
}

QLowEnergyControllerNew::~QLowEnergyControllerNew()
{
    disconnectFromDevice(); //in case we were connected
    delete d_ptr;
}

/*!
  Returns the address of the local Bluetooth adapter being used for the
  communication.

  If this class instance was requested to use the default adapter
  but there was no default adapter when creating this
  class instance, the returned \l QBluetoothAddress will be null.

  \sa QBluetoothAddress::isNull()
 */
QBluetoothAddress QLowEnergyControllerNew::localAddress() const
{
    return d_ptr->localAdapter;
}

QBluetoothAddress QLowEnergyControllerNew::remoteAddress() const
{
    return d_ptr->remoteDevice;
}

QLowEnergyControllerNew::ControllerState QLowEnergyControllerNew::state() const
{
    return d_ptr->state;
}

void QLowEnergyControllerNew::connectToDevice()
{
    Q_D(QLowEnergyControllerNew);

    if (!d->isValidLocalAdapter()) {
        d->setError(QLowEnergyControllerNew::InvalidBluetoothAdapterError);
        return;
    }

    if (state() != QLowEnergyControllerNew::UnconnectedState)
        return;

    d->connectToDevice();
}

void QLowEnergyControllerNew::disconnectFromDevice()
{
    Q_D(QLowEnergyControllerNew);

    if (state() == QLowEnergyControllerNew::UnconnectedState)
        return;

    d->invalidateServices();
    d->disconnectFromDevice();
}

void QLowEnergyControllerNew::discoverServices()
{
    Q_D(QLowEnergyControllerNew);

    if (d->state != QLowEnergyControllerNew::ConnectedState)
        return;

    d->discoverServices();
}

QList<QBluetoothUuid> QLowEnergyControllerNew::services() const
{
    return d_ptr->serviceList.keys();
}

QLowEnergyService *QLowEnergyControllerNew::createServiceObject(
        const QBluetoothUuid &serviceUuid, QObject *parent)
{
    Q_D(QLowEnergyControllerNew);
    if (!d->serviceList.contains(serviceUuid))
        return 0;

    QLowEnergyService *service = new QLowEnergyService(
                d->serviceList.value(serviceUuid), parent);

    return service;
}

QLowEnergyControllerNew::Error QLowEnergyControllerNew::error() const
{
    return d_ptr->error;
}

QString QLowEnergyControllerNew::errorString() const
{
    return d_ptr->errorString;
}

QT_END_NAMESPACE