/*

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

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

#include "fmoperationcopy.h"

#include "fmcommon.h"

#include "fmoperationbase.h"

#include "fmdrivedetailstype.h"

#include <QDir>

#include <QFileInfo>

#include <QStringList>

#include <QStack>

FmOperationCopy::FmOperationCopy( QObject *parent, QStringList sourceList, QString targetPath ) :

        FmOperationBase( parent, FmOperationService::EOperationTypeCopy ), 

        mSourceList( sourceList ), mTargetPath( targetPath ),

        mStop( 0 ), mTotalSize( 0 ), mErrString( 0 ), mCopiedSize( 0 ), mTotalSteps( 100 ), mCurrentStep( 0 )

{

}

FmOperationCopy::~FmOperationCopy()

{

}

QStringList FmOperationCopy::sourceList()

{

    return mSourceList;

}

QString FmOperationCopy::targetPath()

{

    return mTargetPath;

}

int FmOperationCopy::start( volatile bool *isStopped, QString *errString )

{

    mStop = isStopped;

    mErrString = errString;

    mTotalSize   = 0;

    mCopiedSize  = 0;

    mCurrentStep = 0;

    if( mSourceList.empty() ) {

        return FmErrWrongParam;

    }

    emit notifyPreparing( true );

    int numofFolders = 0;

    int numofFiles      = 0;

    int ret = FmFolderDetails::queryDetailOfContentList( mSourceList, numofFolders, 

        numofFiles, mTotalSize, mStop, true );

    if( ret != FmErrNone ) {

        return ret;

    }

    emit notifyStart( true, mTotalSteps );

    foreach( const QString& source, mSourceList ) {

        QFileInfo fi( source );

        if( !fi.exists() ) {

            *mErrString = source;

            ret = FmErrSrcPathDoNotExist;

            return ret;

        }

        QString newName;

        QFileInfo destFi( mTargetPath + fi.fileName() );

        while( destFi.exists() ) {

            emit askForRename( destFi.absoluteFilePath(), &newName );

            if( newName.isEmpty() ) {

                ret = FmErrCancel;

                break;

            }

            QString targetName = mTargetPath + newName;

            destFi.setFile( targetName );

        }

        if( ret != FmErrNone ) {

            return ret;

        }

        ret = copy( source, mTargetPath, newName );

        if( ret != FmErrNone ) {

            return ret;

        }

    }

    return FmErrNone;

}

int FmOperationCopy::copy( const QString &source, const QString &targetPath,

                          const QString &newTargetName )

{        

    if( *mStop ) {

        return FmErrCancel;

    }

    QFileInfo fi( source );

    if( !fi.exists() ) {

        *mErrString = source;

        return FmErrSrcPathDoNotExist;

    }

    QString newName;

    if( !newTargetName.isEmpty() ) {

        newName = targetPath + newTargetName;

    } else {

        newName = targetPath + fi.fileName();

    }

    int ret = FmErrNone;

    if (fi.isFile()) {

        quint64 fileSize = fi.size();

        if ( !QFile::copy( source, newName )) {

            *mErrString = source;

            ret = FmErrCannotCopy;

        } else {

        IncreaseProgress( fileSize );

        }

    } else if (fi.isDir()) {

        ret = copyDirInsideContent( source, newName );

    } else {

        qWarning( "Things other than file and directory are not copied" );

        ret = FmErrIsNotFileOrFolder;

    }

    return ret;

}

int FmOperationCopy::copyDirInsideContent( const QString &srcPath, const QString &destPath )

{

    if( destPath.contains( srcPath, Qt::CaseInsensitive ) ) {

        *mErrString = destPath;

        return FmErrCopyDestToSubFolderInSrc;

    }

    QFileInfo srcInfo( srcPath );

    if( !srcInfo.isDir() || !srcInfo.exists() ) {

        *mErrString = srcPath;

        return FmErrSrcPathDoNotExist;

    }

    QFileInfo destInfo( destPath );

    if( !destInfo.exists() ) {

        if( !destInfo.dir().mkdir( destInfo.absoluteFilePath() ) ) {

            *mErrString = destPath;

            return FmErrCannotMakeDir;

        }

    }    

    if( !srcInfo.isDir() ) {

        *mErrString = destPath;

        return FmErrCannotMakeDir;

    }

    //start to copy

    QFileInfoList infoList = QDir( srcPath ).entryInfoList( QDir::NoDotAndDotDot | QDir::AllEntries | QDir::Hidden | QDir::System );

    while( !infoList.isEmpty() ) {

        if( *mStop ) {

            return FmErrCancel;

        }

        QFileInfo fileInfo = infoList.takeFirst();

        if( fileInfo.isFile() ){

            //copy file

            QString newFilePath = destPath + fileInfo.absoluteFilePath().mid( srcPath.length() );

            if (!QFile::copy( fileInfo.absoluteFilePath(), newFilePath ) ) {

                *mErrString = fileInfo.absoluteFilePath();

                return FmErrCannotCopy;

            }

            IncreaseProgress( fileInfo.size() );

        } else if( fileInfo.isDir() ) {

            //makedir

            QString newDirPath = destPath + fileInfo.absoluteFilePath().mid( srcPath.length() );

            if( !QDir( newDirPath ).exists() && !QDir( destPath ).mkdir( newDirPath ) ) {

                *mErrString = newDirPath;

                return FmErrCannotMakeDir;

            }

            // add dir content to list.

            QFileInfoList infoListDir = QDir( fileInfo.absoluteFilePath() ).entryInfoList(

                QDir::NoDotAndDotDot | QDir::AllEntries );

            while( !infoListDir.isEmpty() ) {

                infoList.push_front( infoListDir.takeLast() );

            }

        } else {

            *mErrString = fileInfo.absoluteFilePath();

            return FmErrIsNotFileOrFolder;

        }

    }

    return FmErrNone;

}

void FmOperationCopy::IncreaseProgress( quint64 size )

{

    mCopiedSize += size;

    int step = ( mCopiedSize * 100 ) / mTotalSize;

    if( step > mCurrentStep ) {

        mCurrentStep = step;

        emit notifyProgress( mCurrentStep );

    }

}