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#include "stationdialog.h"

#include "ui_stationdialog.h"

#include <QtCore/QAbstractListModel>

class StationModel : public QAbstractListModel

{

    public:

        enum Role

        {

            StationIdRole = Qt::UserRole + 1,

            StationNameRole

        };

        StationModel(QObject *parent = 0)

            : QAbstractListModel(parent)

        {

        }

        void setStations(const StationInformation::List &list)

        {

            m_stations = list;

            layoutChanged();

        }

        virtual int rowCount(const QModelIndex &parent = QModelIndex()) const

        {

            if (!parent.isValid())

                return m_stations.count();

            else

                return 0;

        }

        virtual int columnCount(const QModelIndex &parent = QModelIndex()) const

        {

            if (!parent.isValid())

                return 1;

            else

                return 0;

        }

        virtual QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const

        {

            if (!index.isValid())

                return QVariant();

            if (index.column() > 1 || index.row() >= m_stations.count())

                return QVariant();

            const StationInformation info = m_stations.at(index.row());

            if (role == Qt::DisplayRole || role == StationNameRole)

                return info.name();

            else if (role == StationIdRole)

                return info.id();

            return QVariant();

        }

    private:

        StationInformation::List m_stations;

};

StationDialog::StationDialog(const QString &name, const QStringList &lineNumbers, QWidget *parent)

    : QDialog(parent)

{

    m_ui.setupUi(this);

    connect(m_ui.m_searchButton, SIGNAL(clicked()), this, SLOT(searchStations()));

    m_ui.m_searchButton->setDefault(true);

    m_ui.m_input->setText(name);

    m_model = new StationModel(this);

    m_ui.m_view->setModel(m_model);

    for (int i = 0; i < lineNumbers.count(); ++i) {

        if (i == 0)

            m_ui.m_line1->setText(lineNumbers.at(i));

        else if (i == 1)

            m_ui.m_line2->setText(lineNumbers.at(i));

        else if (i == 2)

            m_ui.m_line3->setText(lineNumbers.at(i));

        else if (i == 3)

            m_ui.m_line4->setText(lineNumbers.at(i));

    }

    QMetaObject::invokeMethod(this, SLOT(searchStations()), Qt::QueuedConnection);

}

StationInformation StationDialog::selectedStation() const

{

    const QModelIndex index = m_ui.m_view->currentIndex();

    if (!index.isValid())

        return StationInformation();

    return StationInformation(index.data(StationModel::StationIdRole).toString(),

                              index.data(StationModel::StationNameRole).toString());

}

QStringList StationDialog::lineNumbers() const

{

    QStringList lines;

    if (!m_ui.m_line1->text().simplified().isEmpty())

        lines.append(m_ui.m_line1->text().simplified());

    if (!m_ui.m_line2->text().simplified().isEmpty())

        lines.append(m_ui.m_line2->text().simplified());

    if (!m_ui.m_line3->text().simplified().isEmpty())

        lines.append(m_ui.m_line3->text().simplified());

    if (!m_ui.m_line4->text().simplified().isEmpty())

        lines.append(m_ui.m_line4->text().simplified());

    return lines;

}

void StationDialog::searchStations()

{

    m_model->setStations(StationQuery::query(m_ui.m_input->text()));

    m_ui.m_view->keyboardSearch(m_ui.m_input->text());

}