/****************************************************************************
**
** This file is part of the LibreCAD project, a 2D CAD program
**
** Copyright (C) 2012 R. van Twisk (librecad@rvt.dds.nl)
** Copyright (C) 2001-2003 RibbonSoft. All rights reserved.
**
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software 
** Foundation and appearing in the file gpl-2.0.txt included in the
** packaging of this file.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
** GNU General Public License for more details.
** 
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
**
** This copyright notice MUST APPEAR in all copies of the script!  
**
**********************************************************************/

#ifndef RS_FILEIO_H
#define RS_FILEIO_H

#include <vector>
#include <functional>
#include <memory>
#include "rs_filterinterface.h"

//RLZ: TODO destructor for clear filterList
/**
 * API Class for importing files. 
 *
 * @author Andrew Mustun
 */
class RS_FileIO {
private:
    //singleton
	RS_FileIO()=default;
	RS_FileIO(RS_FileIO const&) = delete;
	RS_FileIO& operator = (RS_FileIO const&) = delete;
	RS_FileIO(RS_FileIO&&) = delete;
	RS_FileIO& operator = (RS_FileIO&&) = delete;
	
public:
    /**
     * @return Instance to the unique import object.
     */
	static RS_FileIO* instance();

	/**
	 * @return Filter which can import the given file type.
	 */
	std::unique_ptr<RS_FilterInterface> getImportFilter(const QString &fileName,
										RS2::FormatType t) const;
	
	/**
	 * @return Filter which can export the given file type.
	 */
	std::unique_ptr<RS_FilterInterface> getExportFilter(const QString &fileName,
										RS2::FormatType t) const;

    bool fileImport(RS_Graphic& graphic, const QString& file,
		RS2::FormatType type = RS2::FormatUnknown);
		
    bool fileExport(RS_Graphic& graphic, const QString& file,
		RS2::FormatType type = RS2::FormatUnknown);
	/** \brief detectFormat detect file format type
	 * \param file type
	 * \param forRead read the file to verify dxf/dxfrw type, default to true
	 * \return file format type
	 */
	static RS2::FormatType detectFormat(QString const& file, bool forRead=true);

private:

/** a list of pointers to static functions to create file filters **/
	static std::vector<std::function<RS_FilterInterface*()>> getFilters();
};


#endif