/**************************************************************************
**
** This file is part of Installer Framework
**
** Copyright (c) 2011-2012 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
**
** GNU Lesser General Public License Usage
**
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this file.
** Please review the following information to ensure the GNU Lesser General
** Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** Other Usage
**
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**************************************************************************/

#include "simplemovefileoperation.h"

#include <QtCore/QFileInfo>

namespace QInstaller {

SimpleMoveFileOperation::SimpleMoveFileOperation()
{
    setName(QLatin1String("SimpleMoveFile"));
}

void SimpleMoveFileOperation::backup()
{
}

bool SimpleMoveFileOperation::performOperation()
{
    const QStringList args = arguments();
    if (args.count() != 2) {
        setError(InvalidArguments);
        setErrorString(tr("Invalid arguments in %0: %1 arguments given, exactly 2 expected.").arg(name())
            .arg(args.count()));
        return false;
    }

    const QString source = args.at(0);
    const QString target = args.at(1);

    if (source.isEmpty() || target.isEmpty()) {
        setError(UserDefinedError);
        setErrorString(tr("None of the arguments can be empty: source(%1), target(%2).")
            .arg(source, target));
        return false;
    }

    // If destination file exists, then we cannot use QFile::copy() because it does not overwrite an existing
    // file. So we remove the destination file.
    QFile file(target);
    if (file.exists()) {
        if (!file.remove()) {
            setError(UserDefinedError);
            setErrorString(tr("Can not copy source(%1) to target(%2), because target exists and is "
                "not removable.").arg(source, target));
            return false;
        }
    }

    file.setFileName(source);
    if (!file.rename(target)) {
        setError(UserDefinedError);
        setErrorString(tr("Can not move source(%1) to target(%2): %3").arg(source, target,
            file.errorString()));
        return false;
    }

    emit outputTextChanged(tr("Move %1 to %2.").arg(source, target));
    return true;
}

bool SimpleMoveFileOperation::undoOperation()
{
    const QString source = arguments().at(0);
    const QString target = arguments().at(1);

    QFile(target).rename(source);
    emit outputTextChanged(tr("Move %1 to %2.").arg(target, source));

    return true;
}

bool SimpleMoveFileOperation::testOperation()
{
    return true;
}

Operation *SimpleMoveFileOperation::clone() const
{
    return new SimpleMoveFileOperation();
}

}   // namespace QInstaller