/*
    Scan Tailor - Interactive post-processing tool for scanned pages.
    Copyright (C) Joseph Artsimovich <joseph_a@mail.ru>

    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/>.
*/

#ifndef AUTO_REMOVING_FILE_H_
#define AUTO_REMOVING_FILE_H_

#include <QString>

/**
 * \brief Provides unique_ptr semantics for files.
 *
 * Just like std::unique_ptr deleting its object when it goes out of scope,
 * this class deletes a file.  unique_ptr's copying semantics is also preserved.
 */
class AutoRemovingFile
{
private:
    struct CopyHelper {
        AutoRemovingFile* obj;

        CopyHelper(AutoRemovingFile* o) : obj(o) {}
    };
public:
    AutoRemovingFile();

    AutoRemovingFile(QString const& file_path);

    AutoRemovingFile(AutoRemovingFile& other);

    AutoRemovingFile(CopyHelper other);

    ~AutoRemovingFile();

    AutoRemovingFile& operator=(AutoRemovingFile& other);

    AutoRemovingFile& operator=(CopyHelper other);

    operator CopyHelper()
    {
        return CopyHelper(this);
    }

    QString const& get() const
    {
        return m_file;
    }

    void reset(QString const& file);

    QString release();
private:
    QString m_file;
};

#endif
