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#include <QtCore/qmetaobject.h>
#include <QtIviCore/qiviserviceobject.h>

#include "qiviabstractzonedfeature.h"
#include "qiviabstractzonedfeature_p.h"
#include "qivizonedfeatureinterface.h"

QT_BEGIN_NAMESPACE

QIviAbstractZonedFeaturePrivate::QIviAbstractZonedFeaturePrivate(const QString &interface, const QString &zone, QIviAbstractFeature *parent)
    : QIviAbstractFeaturePrivate(interface, parent)
    , m_zone(zone)
{}

/*!
    \class QIviAbstractZonedFeature
    \inmodule QtIviCore

    \since 5.6

    \brief The QIviAbstractZonedFeature is the base class for all QtIvi vehicle features.

    QIviAbstractZonedFeature contains all feature attributes and zone handling.
*/

/*!
    \qmltype AbstractZonedFeature
    \instantiates QIviAbstractZonedFeature
    \inqmlmodule QtIvi 1.0
    \inherits AbstractFeature
    \brief The AbstractZonedFeature is not directly accessible. The QML type provides
    base QML properties for each QML Vehicle feature like zone and error access.
*/

/*!
    Constructs a vehicle feature with a specific \a interface and \a zone.

    If \a parent is of type QIviAbstractZonedFeature, then the created instance
    uses parent for the backend connection. Parent is connected to the
    backend and will forward updates between child features and the backend.

    \sa QIviAbstractFeature
*/
QIviAbstractZonedFeature::QIviAbstractZonedFeature(const QString &interface, const QString &zone, QObject *parent)
    : QIviAbstractFeature(*new QIviAbstractZonedFeaturePrivate(interface, zone, this), parent)
{
}

/*!
    \reimp
*/
bool QIviAbstractZonedFeature::acceptServiceObject(QIviServiceObject *serviceObject)
{
    if (auto *parentFeature = qobject_cast<QIviAbstractZonedFeature*>(parent()))
        return parentFeature->acceptServiceObject(serviceObject);
    else if (serviceObject)
        return serviceObject->interfaces().contains(interfaceName());
    return false;
}

/*!
    \reimp
*/
void QIviAbstractZonedFeature::connectToServiceObject(QIviServiceObject *serviceObject)
{
    QIviZonedFeatureInterface *backend = nullptr;
    if (auto *parentFeature = qobject_cast<QIviAbstractZonedFeature*>(parent()))
        backend = parentFeature->backend();
    else if (serviceObject)
        backend = qobject_cast<QIviZonedFeatureInterface*>(serviceObject->interfaceInstance(interfaceName()));

    connect(backend, &QIviZonedFeatureInterface::availableZonesChanged, this, &QIviAbstractZonedFeature::initializeZones);

    if (backend) {
        QStringList zones = backend->availableZones();
        initializeZones(zones);
    }

    QIviAbstractFeature::connectToServiceObject(serviceObject);
}

/*!
    \reimp
*/
void QIviAbstractZonedFeature::clearServiceObject()
{
    Q_D(QIviAbstractZonedFeature);
    qDeleteAll(d->m_zoneFeatures);
    d->m_zoneFeatures.clear();
    d->m_zoneFeatureList.clear();
    d->m_zoneFeatureMap.clear();
    emit availableZonesChanged(QStringList());
    emit zonesChanged();
}

/*!
    Returns a pointer to the backend \a interface.

    Returns the parent backend, if the parent is a QIviAbstractZonedFeature type.
    Returns zero if no backend is connected.
*/
QIviZonedFeatureInterface *QIviAbstractZonedFeature::backend(const QString &interface) const
{
    QString iface = interface;
    if (iface.isEmpty())
        iface = interfaceName();

    if (auto *parentFeature = qobject_cast<QIviAbstractZonedFeature*>(parent()))
        return parentFeature->backend();
    else if (QIviServiceObject *so = serviceObject())
        return so->interfaceInstance<QIviZonedFeatureInterface*>(iface);
    return nullptr;
}


/*!
    \fn virtual QIviAbstractZonedFeature *QIviAbstractZonedFeature::createZoneFeature(const QString &zone) = 0

    Create a new child feature for the given \a zone.

    Returns zero if the feature can't be created using the parameters specified.
*/

/*!
    \qmlproperty QString AbstractZonedFeature::zone

    \brief Name of the zone for this zoned feature.

    The zone can be given in the feature initialization. This property lets you control a single
    specific feature zone only.

    This property is only writable before the backend is connected. Once the backend is
    discovered and the component is verified to be valid, the zone is not writable anymore.
    It's not recommended to change the zone after initialization.

    \qml
    ClimateControl {
        zone: "FrontLeft"
        onAirConditioningChanged: {
            // Take action on front left A/C changes.
        }
   }
    \endqml
*/
/*!
    \property QIviAbstractZonedFeature::zone

    \brief Name of the zone of this zoned feature.

    The zone can be given in the feature initialization. With this property it's possible to
    control only a single specific feature zone.

    This property is writable only before the backend is connected. Once the backend is discovered
    and the component is verified to be valid, zone is not writable anymore.

    It's recommended to initialize the zone in the feature constructor:

    \code
    QIviClimateControl *climateControl = new QIviClimateControl("FrontLeft", this);
    climateControl->startAutoDiscovery();
    QString zone = climateControl->zone();
    \endcode

    After initialization, it's not recommended to change the zone.

*/
QString QIviAbstractZonedFeature::zone() const
{
    Q_D(const QIviAbstractZonedFeature);
    return d->m_zone;
}

void QIviAbstractZonedFeature::setZone(const QString &zone)
{
    Q_D(QIviAbstractZonedFeature);
    if (backend() || d->m_zone == zone)
        return;
    d->m_zone = zone;
    emit zoneChanged();
}

void QIviAbstractZonedFeature::initializeZones(const QStringList &zones)
{
    if (!backend() || !zone().isEmpty())
        return;

    Q_D(QIviAbstractZonedFeature);
    for (const QString &zone : zones) {
        QIviAbstractZonedFeature *f = zoneAt(zone);
        if (!f) {
            if (this->zone() == zone)
                f = this;
            else
                f = createZoneFeature(zone);
            if (f) {
                f->d_func()->m_serviceObject = d->m_serviceObject;
                d->m_zoneFeatures.append(f);
                d->m_zoneFeatureList.append(QVariant::fromValue(f));
                d->m_zoneFeatureMap.insert(f->zone(), QVariant::fromValue(f));
                emit availableZonesChanged(d->m_zoneFeatureMap.keys());
                emit zonesChanged();
            }
        }
    }
}

/*!
    \qmlproperty QStringList AbstractZonedFeature::availableZones

    Holds a list of the available zones.
*/
/*!
    \property QIviAbstractZonedFeature::availableZones

    Holds a list of the available zones.
*/
QStringList QIviAbstractZonedFeature::availableZones() const
{
    Q_D(const QIviAbstractZonedFeature);
    return d->m_zoneFeatureMap.keys();
}


/*!
    Returns the given \a zone instance for the feature.
*/
QIviAbstractZonedFeature *QIviAbstractZonedFeature::zoneAt(const QString &zone) const
{
    Q_D(const QIviAbstractZonedFeature);
    for (QIviAbstractZonedFeature *f : d->m_zoneFeatures)
        if (f->zone() == zone)
            return f;
    return nullptr;
}

/*!
    Returns all zone instances for the feature.
*/
QList<QIviAbstractZonedFeature*> QIviAbstractZonedFeature::zones() const
{
    Q_D(const QIviAbstractZonedFeature);
    return d->m_zoneFeatures;
}

QIviAbstractZonedFeature::QIviAbstractZonedFeature(QIviAbstractZonedFeaturePrivate &dd, QObject *parent)
    : QIviAbstractFeature(dd, parent)
{
}

/*!
    \qmlproperty QVariantMap AbstractZonedFeature::zoneAt

    Provides direct feature access to the given zone.

    \code
    feature.zoneAt.FrontLeft
    \endcode
*/
/*!
    \property QIviAbstractZonedFeature::zoneAt

    Provides direct feature access to the given zone.
*/
QVariantMap QIviAbstractZonedFeature::zoneFeatureMap() const
{
    Q_D(const QIviAbstractZonedFeature);
    return d->m_zoneFeatureMap;
}

/*!
    \qmlproperty QVariantList AbstractZonedFeature::zones

    Provides access to the feature zones model.

    \code
    model: feature.zones
    \endcode
*/
/*!
    \property QIviAbstractZonedFeature::zones

    Provides access to the feature zones model.
*/
QVariantList QIviAbstractZonedFeature::zoneFeatureList() const
{
    Q_D(const QIviAbstractZonedFeature);
    return d->m_zoneFeatureList;
}

QT_END_NAMESPACE