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#include "VariantsTagModel.h"

VariantsTagModel::VariantsTagModel(const QVector<std::pair<QString, bool> > &data, QObject *parent)
    : QAbstractListModel(parent)
    , m_data(data)
{

}

void VariantsTagModel::updateTagState(const QString &tag, bool selected)
{
    for (auto &t : m_data) {
        if (t.first == tag) {
            t.second = selected;
            break;
        }
    }
}

// return the tags in a formatted string to be saved to the property
QString VariantsTagModel::serialize(const QString &groupName) const
{
    QString ret;
    bool skipFirst = false;
    for (auto &t : qAsConst(m_data)) {
        if (t.second) {
            if (skipFirst)
                ret.append(QLatin1Char(','));

            ret.append(groupName + QLatin1Char(':') + t.first);

            skipFirst = true;
        }
    }

    return ret;
}

int VariantsTagModel::rowCount(const QModelIndex &parent) const
{
    // For list models only the root node (an invalid parent) should return the list's size. For all
    // other (valid) parents, rowCount() should return 0 so that it does not become a tree model.
    if (parent.isValid())
        return 0;

    return m_data.size();
}

QVariant VariantsTagModel::data(const QModelIndex &index, int role) const
{
    if (!index.isValid())
        return QVariant();

    if (role == TagRole)
        return m_data.at(index.row()).first;
    else if (role == SelectedRole)
        return m_data.at(index.row()).second;

    return QVariant();
}

QHash<int, QByteArray> VariantsTagModel::roleNames() const
{
    auto names = QAbstractListModel::roleNames();
    names.insert(TagRole, "tag");
    names.insert(SelectedRole, "selected");
    return names;
}

Qt::ItemFlags VariantsTagModel::flags(const QModelIndex &index) const
{
    if (!index.isValid())
        return Qt::NoItemFlags;

    return Qt::ItemIsEditable; // FIXME: Implement me!
}