/***************************************************************************
 *   Copyright (C) 2008-2017 by Oleksii S. Malakhov <brezerk@gmail.com>    *
 *                                                                         *
 *   This program is free software: you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation, either version 3 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   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, see <http://www.gnu.org/licenses/>. *
 *                                                                         *
 ***************************************************************************/

/*!
 * \defgroup registry Q4Wine registry core
 * \brief Registry core package provides general registry functions like reading and writing for Wine registry files.
 */

#ifndef REGISTRY_H
#define REGISTRY_H

#include <memory>

#include <config.h>

#include <unistd.h>

#include <QTime>

//q4wine lib
#include "q4wine-lib.h"

/*!
 * \class Registry
 * \ingroup registry
 * \brief This class provides general registry functions for Q4Wine.
 *
 * This class can create registry files to export via Wine regedit.
 * Also this class can read keys value from Wine registry.
 *
 */
class Registry: public QObject
{
	Q_OBJECT
public:
	/*! \brief This is empty calss constructor.
	  */
	Registry();
	/*! \brief This is calss constructor.
	  * \param prefixPath Base prefix path. This is need to get wine system registry file path.
	  */
	Registry(QString prefixPath);

	/*! \brief Creates heade information for  exported reg file.
	  *
	  * \return ture on success.
	  */
	bool init();

	/*! \brief Appends path and keys to exported reg file.
	  * \param reg_keys QString of keys and it's values.
	  */
	void append(QString reg_keys);

	/*! \brief Append setted key to exported reg file.
	  * \param path  Registry path
	  * \param key   Registry key name
	  * \param value Keristry key value
	  */
	void set(QString path, const QString key, const QString value, const QString hkey = "HKEY_CURRENT_USER");

	/*! \brief Append setted unsetkey to exported reg file.
	  * \param path  Registry path
	  * \param key   Registry key name
	  */
	void unset(QString path, const QString key, const QString hkey = "HKEY_CURRENT_USER");
	void unsetPath(QString path, const QString hkey = "HKEY_CURRENT_USER");

	/*! \brief Executes regedit to import exported file into wine registry.
	  *
	  * \return ture on success.
	  */
        bool exec(QObject *parent, QString prefix_path, QString prefix_name = "Default");

	/*! \brief Read registry keys value from regfile by path.
	  * \param path Registry path.
	  * \param keys List of keys to be readed from registry.
	  *
	  * \return List of readed key's value. Index of readed keys identical to requested keys.
	  */
	QStringList readKeys(const QString sysfile, const QString path, const QStringList keys) const;

	/*! \brief Read registry all keys (exclude of requested keys) value from regfile by path.
	  * \param sysfile
	  * \param path Registry path.
	  * \param keys List of keys to be excluded readed from registry.
	  * \param count Number of keys to be readed from registry.
	  *
	  * \return List of readed key's value. Index of readed keys identical to requested keys.
	  */
	QStringList readExcludedKeys(const QString sysfile, const QString path, const QStringList keys, const int count) const;

private:
	//! This is need for libq4wine-core.so import;
	typedef void *CoreLibPrototype (bool);
		CoreLibPrototype *CoreLibClassPointer;
		std::auto_ptr<corelib> CoreLib;
	QLibrary libq4wine;

	QString regfile;
	QString regfile_image;
};

#endif
