/**

   This file is part of CWRT package **

   Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). **

   This program is free software: you can redistribute it and/or modify

   it under the terms of the GNU (Lesser) General Public License as 

   published by the Free Software Foundation, version 2.1 of the License. 

   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 

   (Lesser) General Public License for more details. You should have 

   received a copy of the GNU (Lesser) General Public License along 

   with this program. If not, see <http://www.gnu.org/licenses/>.

*/

#include "storageutility.h"

#include <QFile>

#include <QDir>

#include <qregexp.h>

int StorageUtility::generateUniqueFileName(const QString &fileName, const QString &tempPath,

        const QString& permPath, QString &outFileName)

{

    int uniqueExt = 0;

    QString orgFilename = fileName;    

    QFileInfo fileinfo(tempPath, fileName);

    QFileInfo fileinfoPerm(permPath, fileName);

    while(true)

    {

        uniqueExt++;

        // check if file exists

        if (fileinfo.exists() || fileinfoPerm.exists()) {

            // a file with this name already exists in either temporary

            // or permanent download location

            QString tempFileName = orgFilename;

            QString ext = fileinfo.suffix();

            QString fileNoExt = tempFileName;

            if (!ext.isEmpty())

                fileNoExt = tempFileName.mid(0, tempFileName.length()-ext.length()-1);

            // add index to filename

            QString strExt;

            strExt.setNum(uniqueExt);

            tempFileName =  fileNoExt+"("+strExt+")";

            if (!ext.isEmpty())

                tempFileName = tempFileName+"."+ext;

            // set fileinfo to check again if any file with 

            // this new filename already exists

            fileinfo.setFile(tempPath, tempFileName);

            fileinfoPerm.setFile(permPath, tempFileName);

        }

        else {

            // this is a unique filename

            outFileName = fileinfo.fileName();

            return 0;

        }

    }   

    return -1;

}

void StorageUtility::validateFileName(const QString &fileName, QString &outFileName)

{

    QString orgFileName = fileName;

    // Remove invalid filename characters

    orgFileName.replace( QRegExp("[?:*\"\\/<>|]"), "" );

    // Check if filename is empty

    outFileName = orgFileName.trimmed();

    if (outFileName.isEmpty())

        outFileName = FILENAME_UNKNOWN;

}

QString StorageUtility::createTemporaryPath(const QString& clientName)

{

    /* create "downloads" folder : ./<clientname>/downloads */ 

    QString orgClientName = clientName;

    orgClientName.replace( QRegExp("[\\\\/:\\*\\?\"<>\\|]+"), "_" );

    QDir currentDir(QDir::current());

    QString tempPath = currentDir.absolutePath() + "/" + orgClientName + "/" + QObject::tr(TEMPORARY_FOLDER);

    currentDir.mkpath(tempPath);

    return tempPath;

}