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#include "maemodeviceconfiglistmodel.h"

#include "maemoconstants.h"

namespace Qt4ProjectManager {
namespace Internal {

MaemoDeviceConfigListModel::MaemoDeviceConfigListModel(QObject *parent)
    : QAbstractListModel(parent), m_currentIndex(-1)
{
    setupList();
    const MaemoDeviceConfigurations &devConfs
        = MaemoDeviceConfigurations::instance();
    if (m_devConfigs.isEmpty())
        setInvalid();
    else
        setCurrentIndex(0);
    connect(&devConfs, SIGNAL(updated()), this,
        SLOT(handleDeviceConfigListChange()));
}

void MaemoDeviceConfigListModel::setupList()
{
    m_devConfigs.clear();
    const MaemoDeviceConfigurations &devConfs
        = MaemoDeviceConfigurations::instance();
    foreach (const MaemoDeviceConfig &devConfig, devConfs.devConfigs()) {
        if (devConfig.freePorts().hasMore())
            m_devConfigs << devConfig;
    }
}

void MaemoDeviceConfigListModel::setCurrentIndex(int index)
{
    const quint64 idForIndex = m_devConfigs.at(index).internalId;
    if (idForIndex != m_currentId) {
        m_currentId = idForIndex;
        m_currentIndex = index;
        emit currentChanged();
    }
}

void MaemoDeviceConfigListModel::resetCurrentIndex()
{
    if (m_devConfigs.isEmpty()) {
        setInvalid();
        return;
    }

    for (int i = 0; i < m_devConfigs.count(); ++i) {
        if (m_devConfigs.at(i).internalId == m_currentId) {
            setCurrentIndex(i);
            return;
        }
    }
    setCurrentIndex(0);
}

void MaemoDeviceConfigListModel::setInvalid()
{
    m_currentIndex = -1;
    m_currentId = MaemoDeviceConfig::InvalidId;
    emit currentChanged();
}

MaemoDeviceConfig MaemoDeviceConfigListModel::current() const
{
    return MaemoDeviceConfigurations::instance().find(m_currentId);
}

QVariantMap MaemoDeviceConfigListModel::toMap() const
{
    QVariantMap map;
    map.insert(DeviceIdKey, current().internalId);
    return map;
}

void MaemoDeviceConfigListModel::fromMap(const QVariantMap &map)
{
    const quint64 oldId = m_currentId;
    m_currentId = map.value(DeviceIdKey, 0).toULongLong();
    resetCurrentIndex();
    if (oldId != m_currentId)
        emit currentChanged();
}

void MaemoDeviceConfigListModel::handleDeviceConfigListChange()
{
    setupList();
    resetCurrentIndex();
    reset();
    emit currentChanged();
}

int MaemoDeviceConfigListModel::rowCount(const QModelIndex &parent) const
{
    return parent.isValid() ? 0 : m_devConfigs.count();
}

QVariant MaemoDeviceConfigListModel::data(const QModelIndex &index, int role) const
{
    if (!index.isValid() || index.row() >= rowCount()
        || role != Qt::DisplayRole)
        return QVariant();
    return m_devConfigs.at(index.row()).name;
}

} // namespace Internal
} // namespace Qt4ProjectManager