/*!
 * \brief Model implementation for the providers.
 *
 * \copyright Copyright (c) 2015-2018 Governikus GmbH & Co. KG, Germany
 */

#pragma once

#include "ProviderModel.h"

#include <QSet>
#include <QSortFilterProxyModel>
#include <QString>


namespace governikus
{

class ProviderCategoryFilterModel
	: public QSortFilterProxyModel
{
	Q_OBJECT
	Q_PROPERTY(QString searchString READ getSearchString WRITE updateSearchString NOTIFY fireCriteriaChanged)
	Q_PROPERTY(QStringList categories READ getSelectedCategories NOTIFY fireCriteriaChanged)
	Q_PROPERTY(int rowCount READ rowCount NOTIFY fireCriteriaChanged)
	Q_PROPERTY(int additionalResultCount READ getAdditionalResultCount NOTIFY fireCriteriaChanged)

	private:
		QString mSearchString;
		QSet<QString> mSelectedCategories;

		ProviderModel mProviderModel;

		QString getSearchString() const;
		void updateSearchString(const QString& pSearchString);
		QStringList getSelectedCategories() const;
		int getAdditionalResultCount() const;
		int matchesForExcludedCategory(const QString& pCategory) const;

	protected:
		bool filterAcceptsRow(int pSourceRow, const QModelIndex& pSourceParent) const override;

	public:
		ProviderCategoryFilterModel();
		virtual ~ProviderCategoryFilterModel() override;

		Q_INVOKABLE void sortByCategoryFirst(bool pEnabled);
		Q_INVOKABLE void setCategorySelection(const QString& pCategory);
		Q_INVOKABLE void updateCategorySelection(const QString& pCategory, bool pSelected);
		Q_INVOKABLE void addAdditionalResultCategories();

	Q_SIGNALS:
		void fireCriteriaChanged();

};


} /* namespace governikus */