/*

* Copyright (c) 2009-2010 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 "cxeimagedataitemsymbian.h"

#include "cxeerrormappingsymbian.h"

#include "cxesysutil.h"

#include "cxutils.h"

#include "cxestate.h"

#include "OstTraceDefinitions.h"

#ifdef OST_TRACE_COMPILER_IN_USE

#include "cxeimagedataitemsymbianTraces.h"

#endif

/*!

* Constructor.

*/

CxeImageDataItemSymbian::CxeImageDataItemSymbian(QByteArray data,

                                                 QString filename,

                                                 int id,

                                                 bool addLocation,

                                                 CxeImageDataItem::State state)

  : CxeStateMachine("CxeImageDataItemSymbian"),

    mId(id),

    mData(data),

    mAddLocationInfo(addLocation),

    mPath(filename)

{

    CX_DEBUG_ENTER_FUNCTION();

    qRegisterMetaType<CxeImageDataItem::State>();

    qRegisterMetaType<CxeError::Id>();

    // Init mState

    initializeStates();

    setInitialState(state);

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

* Destructor.

*/

CxeImageDataItemSymbian::~CxeImageDataItemSymbian()

{

    CX_DEBUG_ENTER_FUNCTION();

    closeHandles();

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

* Save the data now.

* @return Status code.

*/

CxeError::Id CxeImageDataItemSymbian::save()

{

    CX_DEBUG_ENTER_FUNCTION();

    CxeError::Id status(CxeError::None);

    try {

        setState(CxeImageDataItem::Saving);

        trySave();

        setState(CxeImageDataItem::Saved);

    } catch (const std::exception &e) {

        closeHandles();

        status = CxeErrorHandlingSymbian::map(qt_symbian_exception2Error(e));

        setState(CxeImageDataItem::SaveFailed);

    }

    emit imageSaved(status, mPath, mId);

    CX_DEBUG_EXIT_FUNCTION();

    return status;

}

/*!

* Helper method for trying to save the data.

* If any error is encountered during the saving process, exception is thrown.

*/

void CxeImageDataItemSymbian::trySave()

{

    CX_DEBUG_ENTER_FUNCTION();

    OstTrace0(camerax_performance, CXEIMAGEDATAITEMSYMBIAN_SAVE_IN, "msg: e_CX_IMAGEDATAITEM_SAVE 1");

    CX_DEBUG(("CxeImageDataItemSymbian - Starting to save [%s]", qPrintable(mPath)));

    // Check we have the path set.

    if (mPath.isEmpty()) {

        CX_DEBUG(("CxeImageDataItemSymbian - Filename not set!"));

        qt_symbian_throwIfError(KErrArgument);

    }

    TPtrC16 filename;

    filename.Set(reinterpret_cast<const TUint16*>(mPath.utf16()));

    // Init

    CX_DEBUG(("CxeImageDataItemSymbian - connect to RFs.."));

    qt_symbian_throwIfError(mFs.Connect());

    // Get drive number

    TInt drive = 0;

    CX_DEBUG(("CxeImageDataItemSymbian - Get drive number.."));

    qt_symbian_throwIfError(RFs::CharToDrive(filename[0], drive));

    // Check disk has space

    bool fullDisk = checkDiskSpace(&mFs, mData.size(), drive);

    if (fullDisk) {

        CX_DEBUG(("CxeImageDataItemSymbian - Disk is full!"));

        qt_symbian_throwIfError(KErrDiskFull);

    }

    // Attempt to create the file

    // Note: In sake of MDS not starting harvesting here,

    // do not use RFile::Replace. If harvesting is started now,

    // our later call to harvest may be ignored and

    // file may be missing from "Captured" album.

    CX_DEBUG(("CxeImageDataItemSymbian - Create the file.."));

    qt_symbian_throwIfError(mFile.Create(mFs, filename, EFileWrite));

    // Write data to the file.

    CX_DEBUG(("CxeImageDataItemSymbian - Starting to write the file.."));

    TPtrC8 data(reinterpret_cast<const TUint8*> (mData.constData()), mData.size());

    qt_symbian_throwIfError(mFile.Write(data)); // synchronous

    // Flush all the data to file now.

    // This may take a while depending on buffer sizes and file server load.

    OstTrace0(camerax_performance, CXEIMAGEDATAITEMSYMBIAN_FLUSH_1, "msg: e_CX_SAVE_FLUSH_FILE 1");

    qt_symbian_throwIfError(mFile.Flush());

    OstTrace0(camerax_performance, CXEIMAGEDATAITEMSYMBIAN_FLUSH_2, "msg: e_CX_SAVE_FLUSH_FILE 0");

    // Close the file and server handles.

    closeHandles();

    CX_DEBUG(("CxeImageDataItemSymbian - Saving to file completed.."));

    OstTrace0(camerax_performance, CXEIMAGEDATAITEMSYMBIAN_SAVED, "msg: e_CX_SHOT_TO_SAVE 0");

    OstTrace0(camerax_performance, CXEIMAGEDATAITEMSYMBIAN_SAVE_OUT, "msg: e_CX_IMAGEDATAITEM_SAVE 0");

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

* Get the id number of this data item.

*/

int CxeImageDataItemSymbian::id() const

{

    return mId;

}

/*!

* Get the path of this data item.

*/

QString CxeImageDataItemSymbian::path() const

{

    return mPath;

}

/*!

* Check that there's enough space in the drive.

* @param aFs File server session

* @param aBytesToWrite Amount of bytes to be written.

* @param aDrive Drive number.

* @return True, if given amount of bytes can be written to the drive, false otherwise.

*/

bool CxeImageDataItemSymbian::checkDiskSpace(RFs* aFs,

        TInt aBytesToWrite,

        TInt aDrive)

{

    CX_DEBUG_ENTER_FUNCTION();

    bool value = CxeSysUtil::DiskSpaceBelowCriticalLevel(

            aFs,

            aBytesToWrite,

            aDrive );

    return value;

}

/*!

* State of this item.

* @return The state.

*/

CxeImageDataItem::State CxeImageDataItemSymbian::state() const

{

    return static_cast<CxeImageDataItem::State> (stateId());

}

/*!

* Handle state change.

*/

void CxeImageDataItemSymbian::handleStateChanged(int newStateId, CxeError::Id error)

{

    emit stateChanged(static_cast<State> (newStateId), error);

}

/*!

* Is location tagging enabled for this item.

* @return True if location tagging is enabled, false otherwise.

*/

bool CxeImageDataItemSymbian::isLocationEnabled() const

{

    return mAddLocationInfo;

}

/*!

* Init the state machine.

*/

void CxeImageDataItemSymbian::initializeStates()

{

    // addState( id, name, allowed next states )

    addState(new CxeState(SavePending, "SavePending", Saving | SaveFailed));

    addState(new CxeState(Saving, "Saving", Saved | SaveFailed));

    addState(new CxeState(Saved, "Saved", 0));

    addState(new CxeState(SaveFailed, "SaveFailed", 0));

}

/*!

* Close the file server and file handles.

*/

void CxeImageDataItemSymbian::closeHandles()

{

    mFile.Close();

    mFs.Close();

}

// end of file