/*

* 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: Music Player collection data - private implementation.

*

*/

#include <thumbnaildata.h>

#include <thumbnailobjectsource.h>

#include <mpxmedia.h>

#include <mpxmediacontainerdefs.h>

#include <mpxmediaarray.h>

#include <mpxmediageneraldefs.h>

#include <mpxmediamusicdefs.h>

#include "mpmpxcollectiondata_p.h"

#include "mptrace.h"

_LIT( KSong, " song" );

_LIT( KSongs, " songs" );

/*!

    \class MpMpxCollectionDataPrivate

    \brief Music Player collection data - private implementation.

    This is a private implementation of the collection data interface.

*/

/*!

 \internal

 */

MpMpxCollectionDataPrivate::MpMpxCollectionDataPrivate( MpMpxCollectionData *wrapper )

    : q_ptr( wrapper ),

      iContainerMedia(0),

      iMediaArray(0),

      iContext( ECollectionContextUnknown ),

      iCachedRemovedItem ( 0 )

{

    TX_LOG

}

/*!

 \internal

 */

MpMpxCollectionDataPrivate::~MpMpxCollectionDataPrivate()

{

    TX_ENTRY

    delete iContainerMedia;

    delete iCachedRemovedItem;

    TX_EXIT

}

/*!

 \internal

 */

TCollectionContext MpMpxCollectionDataPrivate::context() const

{

    return iContext;

}

/*!

 \internal

 */

int MpMpxCollectionDataPrivate::count() const

{

    if ( iMediaArray ) {

        return iMediaArray->Count();

    }

    return 0;

}

/*!

 \internal

 */

QString MpMpxCollectionDataPrivate::collectionTitle() const

{

    TX_ENTRY

    QString title;

    if ( iContainerMedia && iContainerMedia->IsSupported( KMPXMediaGeneralTitle ) ) {

        const TDesC& titleText = iContainerMedia->ValueText( KMPXMediaGeneralTitle );

        if ( titleText.Compare( KNullDesC ) != 0 ) {

            title = QString::fromUtf16( titleText.Ptr(), titleText.Length() );

        }

    }

    TX_EXIT_ARGS("title =" << title);

    return title;

}

/*!

 \internal

 */

QString MpMpxCollectionDataPrivate::itemData( int index, MpMpxCollectionData::DataType type ) const

{

    TX_ENTRY_ARGS("index=" << index << ", type=" << type);

    QString data;

    TRAPD(err, DoGetDataL(index, type, data));

    if ( err != KErrNone ) {

        TX_LOG_ARGS("Error: " << err << "; should never get here.");

    }

    TX_EXIT

    return data;

}

/*!

 \internal

 */

bool MpMpxCollectionDataPrivate::isAutoPlaylist()

{

    TX_ENTRY

    if ( iContext != ECollectionContextPlaylistSongs ) {

        TX_EXIT

        return false;

    }

    bool isAuto = false;

    TRAPD(err, isAuto = DoIsAutoPlaylistL());

    if ( err == KErrNone ) {

        TX_LOG_ARGS("isAuto=" << isAuto);

    }

    else {

        TX_LOG_ARGS("Error: " << err << "; should never get here.");

    }

    TX_EXIT

    return isAuto;

}

/*!

 \internal

 */

bool MpMpxCollectionDataPrivate::isAutoPlaylist( int index )

{

    TX_ENTRY_ARGS("index=" << index);

    if ( iContext != ECollectionContextPlaylists ) {

        TX_EXIT

        return false;

    }

    bool isAuto = false;

    TRAPD(err, isAuto = DoIsAutoPlaylistL(index));

    if ( err == KErrNone ) {

        TX_LOG_ARGS("isAuto=" << isAuto);

    }

    else {

        TX_LOG_ARGS("Error: " << err << "; should never get here.");

    }

    TX_EXIT

    return isAuto;

}

/*!

 \internal

 */

int MpMpxCollectionDataPrivate::itemCount( int index )

{

    TX_ENTRY_ARGS("index=" << index);

    int count = 0;

    TRAPD(err, count = DoGetItemCountL(index));

    if ( err == KErrNone ) {

        TX_LOG_ARGS("count=" << count);

    }

    else {

        TX_LOG_ARGS("Error: " << err << "; should never get here.");

    }

    TX_EXIT

    return count;

}

/*!

 \internal

 */

int MpMpxCollectionDataPrivate::containerId()

{

    int id = -1;

    TRAPD( err, id = DoGetContainerIdL() );

    if ( err == KErrNone ) {

        TX_LOG_ARGS("id=" << id);

    }

    else {

        TX_LOG_ARGS("Error: " << err << "; should never get here.");

    }

    TX_EXIT

    return id;

}

/*!

 \internal

 */

int MpMpxCollectionDataPrivate::itemId(int index)

{

    TX_ENTRY_ARGS("index=" << index);

    int id = -1;

    TRAPD(err, id = DoGetItemIdL(index));

    if ( err == KErrNone ) {

        TX_LOG_ARGS("id=" << id);

    }

    else {

        TX_LOG_ARGS("Error: " << err << "; should never get here.");

    }

    TX_EXIT

    return id;

}

/*!

 \internal

 */

void MpMpxCollectionDataPrivate::removeItem(int index)

{

    TX_ENTRY_ARGS("index=" << index);

     TRAPD(err,  DoRemoveItemL(index));

    if ( err != KErrNone ) {

        TX_LOG_ARGS("Error: " << err << "; should never get here.");

    }

    TX_EXIT

}

/*!

 \internal

 */

bool MpMpxCollectionDataPrivate::testCachedItem( int itemId )

{

    TX_ENTRY_ARGS( "itemId=" << itemId);

    bool match = false;

    TRAPD( err, match = DoTestCachedItemL( itemId ) );

    if ( err == KErrNone ) {

        TX_LOG_ARGS("match=" << match);

    }

    else {

        TX_LOG_ARGS("Error: " << err << "; should never get here.");

    }

    TX_EXIT

    return match;

}

/*!

 \internal

 */

void MpMpxCollectionDataPrivate::insertCachedItem(int index)

{

    TX_ENTRY_ARGS("index=" << index);

    iMediaArray->Insert( iCachedRemovedItem, index );

    iCachedRemovedItem = 0; //ownership tranferred above.

    TX_EXIT

}

/*!

 \internal

 */

void MpMpxCollectionDataPrivate::setMpxMedia( const CMPXMedia& entries )

{

    TX_ENTRY

    TRAPD(err, DoSetMpxMediaL(entries));

    if ( err == KErrNone ) {

        TX_LOG_ARGS("Context changed: iContext=" << iContext);

        emit q_ptr->contextChanged(iContext);

    }

    else {

        TX_LOG_ARGS("Error: " << err << "; should never get here.");

    }

    TX_EXIT

}

/*!

 \internal

 */

void MpMpxCollectionDataPrivate::DoGetDataL( int index, MpMpxCollectionData::DataType type, QString& data ) const

{

    TX_ENTRY

    CMPXMedia* currentMedia( iMediaArray->AtL( index ) );

    TBuf<256> countBuf;

    TBuf<20> temp;

    TInt count = 0;

    switch ( type ) {

        case MpMpxCollectionData::Title:

            if ( currentMedia->IsSupported( KMPXMediaGeneralTitle ) ) {

                const TDesC& title = currentMedia->ValueText( KMPXMediaGeneralTitle );

                if ( title.Compare( KNullDesC ) != 0 ) {

                    data = QString::fromUtf16( title.Ptr(), title.Length() );

                }

            }

            break;

        case MpMpxCollectionData::Artist:

            if ( currentMedia->IsSupported( KMPXMediaMusicArtist ) ) {

                const TDesC& artist = currentMedia->ValueText( KMPXMediaMusicArtist );

                if ( artist.Compare( KNullDesC ) != 0 ) {

                    data = QString::fromUtf16( artist.Ptr(), artist.Length() );

                }

            }

            break;

        case MpMpxCollectionData::Album:

            if ( currentMedia->IsSupported( KMPXMediaMusicAlbum ) ) {

                const TDesC& album = currentMedia->ValueText( KMPXMediaMusicAlbum );

                if ( album.Compare( KNullDesC ) != 0 ) {

                    data = QString::fromUtf16( album.Ptr(), album.Length() );

                }

            }

            break;

        case MpMpxCollectionData::Count:

            if ( currentMedia->IsSupported( KMPXMediaGeneralCount ) ) {

                count = currentMedia->ValueTObjectL<TInt>( KMPXMediaGeneralCount );

            }

            temp.AppendNum( count );

            //AknTextUtils::LanguageSpecificNumberConversion( temp );

            countBuf.Append( temp );

            countBuf.Append( (count > 1 ) ? KSongs() : KSong() );

            data = QString::fromUtf16( countBuf.Ptr(), countBuf.Length() );

            break;

        case MpMpxCollectionData::AlbumArtUri:

            if ( currentMedia->IsSupported( KMPXMediaMusicAlbumArtFileName ) ) {

                const TDesC& album = currentMedia->ValueText( KMPXMediaMusicAlbumArtFileName );

                if ( album.Compare( KNullDesC ) != 0 ) {

                    data = QString::fromUtf16( album.Ptr(), album.Length() );

                }

            }

            break;

        case MpMpxCollectionData::Uri:

            if ( currentMedia->IsSupported( KMPXMediaGeneralUri ) ) {

                const TDesC& uri = currentMedia->ValueText( KMPXMediaGeneralUri );

                if ( uri.Compare( KNullDesC ) != 0 ) {

                    data = QString::fromUtf16( uri.Ptr(), uri.Length() );

                }

            }

            break;

        default:

            break;

    }

    TX_EXIT

}

/*!

 \internal

 */

bool MpMpxCollectionDataPrivate::DoIsAutoPlaylistL()

{

    if ( iContainerMedia->IsSupported(KMPXMediaGeneralNonPermissibleActions) ) {

        TMPXGeneralNonPermissibleActions attr(

                iContainerMedia->ValueTObjectL<TMPXGeneralNonPermissibleActions>(

                KMPXMediaGeneralNonPermissibleActions ) );

        if ( attr & EMPXWrite ) {

            return true;

        }

    }

    return false;

}

/*!

 \internal

 */

bool MpMpxCollectionDataPrivate::DoIsAutoPlaylistL( int index )

{

    const CMPXMediaArray* containerArray = iContainerMedia->Value<CMPXMediaArray>( KMPXMediaArrayContents );

    User::LeaveIfNull( const_cast<CMPXMediaArray*>( containerArray ));

    CMPXMedia* media( containerArray->AtL(index) );

    if ( media->IsSupported(KMPXMediaGeneralNonPermissibleActions) ) {

        TMPXGeneralNonPermissibleActions attr(

            media->ValueTObjectL<TMPXGeneralNonPermissibleActions>(

                KMPXMediaGeneralNonPermissibleActions ) );

        if ( attr & EMPXWrite ) {

            return true;

        }

    }

    return false;

}

/*!

 \internal

 */

int MpMpxCollectionDataPrivate::DoGetItemCountL( int index )

{

    CMPXMedia* currentMedia( iMediaArray->AtL( index ) );

    int count = 0;

    if ( currentMedia->IsSupported( KMPXMediaGeneralCount ) ) {

        count = currentMedia->ValueTObjectL<TInt>( KMPXMediaGeneralCount );

    }

    return count;

}

/*!

 \internal

 */

int MpMpxCollectionDataPrivate::DoGetContainerIdL()

{

    if ( !iContainerMedia->IsSupported( KMPXMediaGeneralId ) ) {

        User::Leave(KErrNotFound);

    }

    return iContainerMedia->ValueTObjectL<TInt>( KMPXMediaGeneralId );

}

/*!

 \internal

 */

int MpMpxCollectionDataPrivate::DoGetItemIdL( int index )

{

    CMPXMedia* currentMedia( iMediaArray->AtL( index ) );

    if ( !currentMedia->IsSupported( KMPXMediaGeneralId ) ) {

        User::Leave(KErrNotFound);

    }

    return currentMedia->ValueTObjectL<TInt>( KMPXMediaGeneralId );

}

/*!

 \internal

 */

void MpMpxCollectionDataPrivate::DoRemoveItemL( int index )

{

    delete iCachedRemovedItem;

    iCachedRemovedItem = 0;

    iCachedRemovedItem = CMPXMedia::NewL( *iMediaArray->AtL( index ) );

    iMediaArray->Remove( index );

}

/*!

 \internal

 */

bool MpMpxCollectionDataPrivate::DoTestCachedItemL( int itemId )

{

    if ( !iCachedRemovedItem && !iCachedRemovedItem->IsSupported( KMPXMediaGeneralId ) ) {

        User::Leave(KErrNotFound);

    }

    return ( itemId == iCachedRemovedItem->ValueTObjectL<TInt>( KMPXMediaGeneralId ) );

}

/*!

 \internal

 */

void MpMpxCollectionDataPrivate::SetCollectionContextL()

{

    TX_ENTRY

    TMPXGeneralType containerType( EMPXNoType );

    if ( iContainerMedia->IsSupported( KMPXMediaGeneralType ) ) {

        containerType = iContainerMedia->ValueTObjectL<TMPXGeneralType>( KMPXMediaGeneralType );

    }

    TMPXGeneralCategory containerCategory( EMPXNoCategory );

    if( iContainerMedia->IsSupported( KMPXMediaGeneralCategory ) ) {

        containerCategory = iContainerMedia->ValueTObjectL<TMPXGeneralCategory>( KMPXMediaGeneralCategory );

    }

    TX_LOG_ARGS("type=" << containerType << ", category=" << containerCategory );

    iContext = ECollectionContextUnknown;

    if ( containerType == EMPXGroup ) {

        switch (containerCategory) {

            case EMPXSong:

                iContext = ECollectionContextAllSongs;

                break;

            case EMPXArtist:

                iContext = ECollectionContextArtists;

                break;

            case EMPXAlbum:

                iContext = ECollectionContextAlbums;

                break;

            case EMPXPlaylist:

                iContext = ECollectionContextPlaylists;

                break;

            case EMPXGenre:

                iContext = ECollectionContextGenres;

                break;

        }

    }

    else if ( containerType == EMPXItem ) {

        switch (containerCategory) {

            case EMPXArtist:

                iContext = ECollectionContextArtistAlbums;

                break;

            case EMPXAlbum:

                iContext = ECollectionContextAlbumSongs;

                break;

            case EMPXSong:

                iContext = ECollectionContextArtistSongs;

                break;

            case EMPXPlaylist:

                iContext = ECollectionContextPlaylistSongs;

                break;

            case EMPXGenre:

                iContext = ECollectionContextGenreSongs;

                break;

        }

    }

    TX_EXIT

}

/*!

 \internal

 */

void MpMpxCollectionDataPrivate::DoSetMpxMediaL( const CMPXMedia& entries )

{

    TX_ENTRY

    delete iContainerMedia;

    iContainerMedia = 0;

    iContainerMedia = CMPXMedia::NewL(entries);

    iMediaArray = const_cast<CMPXMediaArray*>(iContainerMedia->Value<CMPXMediaArray>( KMPXMediaArrayContents ) );

    TX_LOG_ARGS("media count=" << iMediaArray->Count() );

    SetCollectionContextL();

    TX_EXIT

}

/*!

 \internal

 */

const CMPXMedia& MpMpxCollectionDataPrivate::containerMedia()

{

    return *iContainerMedia;

}