/*

* Copyright (c) 2007 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:  Responsible for interaction with the PlaylistSongs and

*                PlaylistSongInfo tables.

*

*/

// INCLUDE FILES

#include <f32file.h>

#include <mpxlog.h>

#include <mpxmedia.h>

#include <mpxmediaarray.h>

#include <mpxmediageneraldefs.h>

#include "mpxdbcommonutil.h"

#include "mpxcollectiondbdef.h"

#include "mpxdbutil.h"

#include "mpxdbpluginqueries.h"

#include "mpxdbmanager.h"

#include "mpxdbplaylistsongs.h"

// ============================ MEMBER FUNCTIONS ==============================

// ----------------------------------------------------------------------------

// Two-phased constructor.

// ----------------------------------------------------------------------------

//

CMPXDbPlaylistSongs* CMPXDbPlaylistSongs::NewL(

    CMPXDbManager& aDbManager)

    {

    MPX_FUNC("CMPXDbPlaylistSongs::NewL");

    CMPXDbPlaylistSongs* self = CMPXDbPlaylistSongs::NewLC(aDbManager);

    CleanupStack::Pop(self);

    return self;

    }

// ----------------------------------------------------------------------------

// Two-phased constructor.

// ----------------------------------------------------------------------------

//

CMPXDbPlaylistSongs* CMPXDbPlaylistSongs::NewLC(

    CMPXDbManager& aDbManager)

    {

    MPX_FUNC("CMPXDbPlaylistSongs::NewLC");

    CMPXDbPlaylistSongs* self = new (ELeave) CMPXDbPlaylistSongs(aDbManager);

    CleanupStack::PushL(self);

    self->ConstructL();

    return self;

    }

// ----------------------------------------------------------------------------

// Destructor

// ----------------------------------------------------------------------------

//

CMPXDbPlaylistSongs::~CMPXDbPlaylistSongs()

    {

    MPX_FUNC("CMPXDbPlaylistSongs::~CMPXDbPlaylistSongs");

    }

// ----------------------------------------------------------------------------

// Constructor

// ----------------------------------------------------------------------------

//

CMPXDbPlaylistSongs::CMPXDbPlaylistSongs(

    CMPXDbManager& aDbManager) :

    CMPXDbTable(aDbManager)

    {

    MPX_FUNC("CMPXDbPlaylistSongs::CMPXDbPlaylistSongs");

    }

// ----------------------------------------------------------------------------

// Second phase constructor.

// ----------------------------------------------------------------------------

//

void CMPXDbPlaylistSongs::ConstructL()

    {

    MPX_FUNC("CMPXDbPlaylistSongs::ConstructL");

    BaseConstructL();

    }

// ----------------------------------------------------------------------------

// CMPXDbPlaylistSongs::AddSongsL

// ----------------------------------------------------------------------------

//

void CMPXDbPlaylistSongs::AddSongsL(

    TUint32 aPlaylistId,

    const CMPXMediaArray& aMediaArray,

    TInt aDriveId)

    {

    MPX_FUNC("CMPXDbPlaylistSongs::AddSongsL");

    TInt count(aMediaArray.Count());

    for (TInt index = 0; index < count; ++index)

        {

        AddSongL(aPlaylistId, *(aMediaArray[index]), aDriveId);

        }

    }

// ----------------------------------------------------------------------------

// CMPXDbPlaylistSongs::AddSongL

// ----------------------------------------------------------------------------

//

TUint32 CMPXDbPlaylistSongs::AddSongL(

    TUint32 aPlaylistId,

    const CMPXMedia& aMedia,

    TInt aDriveId)

    {

    MPX_FUNC("CMPXDbPlaylistSongs::AddSongL");

    }

// ----------------------------------------------------------------------------

// CMPXDbPlaylistSongs::AddSongL

// ----------------------------------------------------------------------------

//

TUint32 CMPXDbPlaylistSongs::AddSongL(

    TUint32 aPlaylistId,

    TInt aOrdinal,

    const CMPXMedia& aMedia,

    TInt aDriveId)

    {

    MPX_FUNC("CMPXDbPlaylistSongs::AddSongL");

    // the UniqueId field is AUTOINCREMENT and its value is going to be generated

    // automatically by the database - no need to supply it here

    TUint32 songId((aMedia.ValueTObjectL<TMPXItemId>(KMPXMediaGeneralId)).iId2);

    // insert PlaylistSongs record

    iDbManager.ExecuteQueryL(aDriveId, KQueryPlaylistSongsInsert, aPlaylistId, songId, aOrdinal);

    // if the song is not already in the PlaylistSongInfo table - add it

    if (!SongInfoExistsL(aDriveId, songId))

        {

        // add a new song info record

        HBufC* uri = MPXDbCommonUtil::ProcessSingleQuotesLC(aMedia.ValueText(KMPXMediaGeneralUri));

        HBufC* title = MPXDbCommonUtil::ProcessSingleQuotesLC(aMedia.ValueText(KMPXMediaGeneralTitle));

        TUint32 dbFlag(0);

        if (aMedia.IsSupported(KMPXMediaGeneralFlags))

            {

            dbFlag = (aMedia.ValueTObjectL<TUint>(KMPXMediaGeneralFlags));

            dbFlag = dbFlag & (~KMPXMediaGeneralFlagsDriveInfo); // clear drive info

            }

        // add the URI without the drive letter

        TPtrC uriPtr(uri->Mid(KMCPathStartPos));

        iDbManager.ExecuteQueryL(aDriveId, KQueryPlaylistSongInfoInsert, songId, &uriPtr, title,

            MPXDbCommonUtil::GetVolIdMatchDriveIdL(iDbManager.Fs(), TDriveUnit(*uri)), dbFlag);

        CleanupStack::PopAndDestroy(title);

        CleanupStack::PopAndDestroy(uri);

        }

    return songId;

    }

// ----------------------------------------------------------------------------

// CMPXDbPlaylistSongs::UpdateSongL

// ----------------------------------------------------------------------------

//

TBool CMPXDbPlaylistSongs::UpdateSongL(

    TUint32 aSongId,

    const CMPXMedia& aMedia,

    TBool aResetFlags,

    TBool& aUpdated)

    {

    MPX_FUNC("CMPXDbPlaylistSongs::UpdateSongL");

    aUpdated = EFalse;

    TBool visibleChange(EFalse);

    // get the current record

    RSqlStatement recordset(iDbManager.ExecuteSelectQueryL(KQueryPlaylistSongInfoGet, aSongId));

    CleanupClosePushL(recordset);

    if (recordset.Next() == KSqlAtRow)

        {

        const TArray<TMPXAttribute> attributes = aMedia.Attributes();

        // stores the current song ID, which may change during execution

        TUint32 songId(aSongId);

        TInt attrCount(attributes.Count());

        for (TInt i = 0; i < attrCount; ++i)

            {

            TInt contentId(attributes[i].ContentId());

            TUint attributeId(attributes[i].AttributeId());

            switch(contentId)

                {

                case KMPXMediaIdGeneral:

                    {

                    if (attributeId & EMPXMediaGeneralTitle)

                        {

                        // existing title

                        TPtrC title(aMedia.ValueText(KMPXMediaGeneralTitle).Left(KMCMaxTextLen));

                        // compare with the old title

                        if (title.Compare(MPXDbCommonUtil::GetColumnTextL(recordset, EPlaylistSongInfoTitle)) != 0)

                            {

                            HBufC* titleProc = MPXDbCommonUtil::ProcessSingleQuotesLC(title);

                            // title has changed - update on all drives

                            iDbManager.ExecuteQueryL(KDbManagerAllDrives, KQueryPlaylistSongInfoUpdateTitle,

                                titleProc, songId);

                            CleanupStack::PopAndDestroy(titleProc);

                            visibleChange = ETrue;

                            aUpdated = ETrue;

                            MPX_DEBUG2("    Title[%S]", &title);

                            }

                        }

                    if (attributeId & EMPXMediaGeneralUri)

                        {

                        const TDesC& uriOrig(aMedia.ValueText(KMPXMediaGeneralUri));

                        songId = MPXDbCommonUtil::GenerateUniqueIdL(iDbManager.Fs(), EMPXCollection, uriOrig, EFalse);

                        if (aSongId != songId)

                            {

                            // URI of the song has been changed. This changes the Id of the song and both the

                            // PlaylistSongs and PlaylistSongInfo tables should be updated accordingly.

                            HBufC* uri = MPXDbCommonUtil::ProcessSingleQuotesLC(uriOrig);

                            // use the URI without the drive letter

                            TPtrC uriPtr(uri->Mid(KMCPathStartPos));

                            // update the PlaylistSongInfo table on all drives

                            iDbManager.ExecuteQueryL(KDbManagerAllDrives, KQueryPlaylistSongInfoUpdate, songId,

                                &uriPtr, MPXDbCommonUtil::GetVolIdMatchDriveIdL(iDbManager.Fs(), TDriveUnit(*uri)), aSongId);

                            // update the PlaylistSongs table on all drives

                            iDbManager.ExecuteQueryL(KDbManagerAllDrives, KQueryPlaylistSongsUpdate, songId,

                                aSongId);

                            aUpdated = ETrue;

                            MPX_DEBUG3("    CurrentSongId[0x%x] changed to [0x%x]", aSongId, songId);

                            CleanupStack::PopAndDestroy(uri);

                            }

                        }

                    if (attributeId & EMPXMediaGeneralFlags)

                        {

                        TUint flag(aMedia.ValueTObjectL<TUint>(KMPXMediaGeneralFlags));

                        TUint32 curFlag(recordset.ColumnInt64(EPlaylistSongInfoDbFlag));

                        if (flag & KMPXMediaGeneralFlagsSetOrUnsetBit)

                            {

                            if (aResetFlags)

                                {

                                visibleChange = ETrue;

                                curFlag = flag;

                                }

                            else

                                {

                                // Set flag, visible change is true only if the flag status is changing

                                visibleChange = visibleChange || ((curFlag^flag) & 0x7FFFFFFF);

                                curFlag |= flag;

                                }

                            }

                        else

                            {

                            // Clear flag, visible change is true only if the flag status is changing

                            visibleChange = visibleChange || (((curFlag^0xFFFFFFFF)^flag) & 0x7FFFFFFF);

                            curFlag &= (~flag);

                            }

                        if (visibleChange)

                            {

                            // update the flags on all drives

                            iDbManager.ExecuteQueryL(KDbManagerAllDrives, KQueryPlaylistSongInfoUpdateFlags,

                                curFlag, songId);

                            aUpdated = ETrue;

                            }

                        MPX_DEBUG2("    GeneralFlags[%b]", curFlag);

                        }

                    } // end case

                } // end switch

            } // end for

        }

    CleanupStack::PopAndDestroy(&recordset);

    return visibleChange;

    }

// ----------------------------------------------------------------------------

// CMPXDbPlaylistSongs::UpdateSongsL

// ----------------------------------------------------------------------------

//

void CMPXDbPlaylistSongs::UpdateSongsL(

    TUint32 aPlaylistId,

    TUint32 aNewPlaylistId)

    {

    MPX_FUNC("CMPXDbPlaylistSongs::UpdateSongsL");

    // update the PlaylistSongs table on all drives

    iDbManager.ExecuteQueryL(KDbManagerAllDrives, KQueryPlaylistSongsUpdatePlaylistId,

        aNewPlaylistId, aPlaylistId);

    }

// ----------------------------------------------------------------------------

// CMPXDbPlaylistSongs::ReorderSongL

// ----------------------------------------------------------------------------

//

void CMPXDbPlaylistSongs::ReorderSongL(

    const TMPXItemId& aPlaylistId,

    const TMPXItemId& aSongId,

    TUint aOriginalOrdinal,

    TUint aNewOrdinal)

    {

    MPX_DEBUG1("-->CMPXDbPlaylistSongs::ReorderSongL");

    MPX_DEBUG5("    playlist[0x%x, 0x%x], song[0x%x, 0x%x]",

               aPlaylistId.iId1, aPlaylistId.iId2, aSongId.iId1, aSongId.iId2);

    //

    // Move the song up. The rest of the songs in between the old ordinal and new ordinal

    // need to be moved down, i.e. their ordinals need to be incremented

    //

    if (aOriginalOrdinal > aNewOrdinal)

        {

        iDbManager.ExecuteQueryL(KDbManagerAllDrives, KQueryPlaylistSongsMoveSongUp,

            aPlaylistId.iId2, aNewOrdinal, aOriginalOrdinal);

        }

    //

    // Move the song down. The rest of the songs in between the old ordinal and new ordinal

    // need to be moved up, i.e. their ordinals need to be decremented

    //

    else if (aOriginalOrdinal < aNewOrdinal)

        {

        iDbManager.ExecuteQueryL(KDbManagerAllDrives, KQueryPlaylistSongsMoveSongDown,

            aPlaylistId.iId2, aNewOrdinal, aOriginalOrdinal);

        }

    //

    // Change the ordinal of the song itself. If the ordinal is unchanged, no update is

    // required

    //

    if (aOriginalOrdinal != aNewOrdinal)

        {

        iDbManager.ExecuteQueryL(KDbManagerAllDrives, KQueryPlaylistSongsUpdateSongOrdinal,

            aNewOrdinal, aSongId.iId1);

        }

    MPX_DEBUG1("<--CMPXDbPlaylistSongs::ReorderSongL");

    }

// ----------------------------------------------------------------------------

// CMPXDbPlaylistSongs::DeleteSongL

// ----------------------------------------------------------------------------

//

void CMPXDbPlaylistSongs::DeleteSongL(

    TUint32 aSongId)

    {

    MPX_FUNC("CMPXDbPlaylistSongs::DeleteSongL");

    // delete from the PlaylistSongs table on all drives

    iDbManager.ExecuteQueryL(KDbManagerAllDrives, KQueryPlaylistSongsDelete, aSongId);

    // delete from the PlaylistSongInfo table on all drives

    iDbManager.ExecuteQueryL(KDbManagerAllDrives, KQueryPlaylistSongInfoDelete, aSongId);

    }

// ----------------------------------------------------------------------------

// CMPXDbPlaylistSongs::DeleteSongL

// ----------------------------------------------------------------------------

//

void CMPXDbPlaylistSongs::DeleteSongL(

    TUint32 aPlaylistId,

    TUint32 aSongId,

    TInt aOrdinal,

    TInt aDriveId)

    {

    MPX_FUNC("CMPXDbPlaylist::DeleteSongL");

    // get the number of instances for the song in the playlist

    TInt count(SongInstanceCountL(aPlaylistId, aSongId));

    if (1 == count)

        {

        // just one instance with this ID in the playlist

        // delete it regardless of the ordinal

        iDbManager.ExecuteQueryL(aDriveId, KQueryPlaylistSongsDeleteSong, aPlaylistId, aSongId);

        // check how many instances of this song are left for all playlists

        if (!SongCountL(aSongId))

            {

            // delete the PlaylistSongInfo record

            iDbManager.ExecuteQueryL(aDriveId, KQueryPlaylistSongInfoDelete, aSongId);

            }

        }

    else if (count > 1)

        {

        // multiple songs with this id in the playlist

        // try to delete the one with the specified ordinal

        iDbManager.ExecuteQueryL(aDriveId, KQueryPlaylistSongsDeleteSongOrdinal, aPlaylistId,

            aSongId, aOrdinal);

        }

    else

        {

        // no such song in the playlist

        User::Leave(KErrCorrupt);

        }

    // adjust song ordinals for the songs after the deleted song

    iDbManager.ExecuteQueryL(aDriveId, KQueryPlaylistSongsUpdateSongOrdinalAfterDelete,

        aPlaylistId, aOrdinal);

    }

// ----------------------------------------------------------------------------

// CMPXDbPlaylistSongs::DeleteSongsL

// ----------------------------------------------------------------------------

//

void CMPXDbPlaylistSongs::DeleteSongsL(

    TUint32 aPlaylistId,

    TInt aDriveId)

    {

    MPX_FUNC("CMPXDbPlaylist::DeleteSongsL");

    // delete the records from the PlaylistSongs table

    iDbManager.ExecuteQueryL(aDriveId, KQueryPlaylistSongsDeletePlaylist, aPlaylistId);

    // delete the unused records from the PlaylistSongInfo table

    CleanupSongInfoL(aDriveId);

    }

// ----------------------------------------------------------------------------

// CMPXDbPlaylistSongs::DeleteSongsForCategoryL

// ----------------------------------------------------------------------------

//

void CMPXDbPlaylistSongs::DeleteSongsForCategoryL(

    TMPXGeneralCategory aCategory,

    TUint32 aCategoryId,

    TInt aDriveId)

    {

    MPX_FUNC("CMPXDbPlaylist::DeleteSongsForCategoryL");

    // get the category field name in the Music table

    TPtrC category = MPXDbUtil::MusicFieldNameForCategoryL(aCategory);

    iDbManager.ExecuteQueryL(aDriveId, KQueryPlaylistSongsDeleteForCategory,

        &category, aCategoryId);

    // delete the unused records from the PlaylistSongInfo table

    CleanupSongInfoL(aDriveId);

    }

// ----------------------------------------------------------------------------

// CMPXDbPlaylistSongs::DeleteSongsForArtistAndAlbumL

// ----------------------------------------------------------------------------

//

void CMPXDbPlaylistSongs::DeleteSongsForArtistAndAlbumL(

    TUint32 aArtistId,

    TUint32 aAlbumId,

    TInt aDriveId)

    {

    MPX_FUNC("CMPXDbPlaylist::DeleteSongsForArtistAndAlbumL");

    // delete the songs in the PlaylisSongs table

    iDbManager.ExecuteQueryL(aDriveId, KQueryPlaylistSongsDeleteForArtistAlbum,

        aArtistId, aAlbumId);

    // delete the unused records from the PlaylistSongInfo table

    CleanupSongInfoL(aDriveId);

    }

// ----------------------------------------------------------------------------

// CMPXDbPlaylistSongs::DeleteAllSongsL

// ----------------------------------------------------------------------------

//

void CMPXDbPlaylistSongs::DeleteAllSongsL()

    {

    MPX_FUNC("CMPXDbPlaylist::DeleteAllSongsL");

    // delete all records from the PlaylistSongs table, all drives

    iDbManager.ExecuteQueryL(KDbManagerAllDrives, KQueryPlaylistSongsDeleteAll);

    // delete all records from the PlaylistSongInfo table, all drives

    iDbManager.ExecuteQueryL(KDbManagerAllDrives, KQueryPlaylistSongInfoDeleteAll);

    }

// ----------------------------------------------------------------------------

// CMPXDbPlaylistSongs::GetSongsL

// ----------------------------------------------------------------------------

//

void CMPXDbPlaylistSongs::GetSongsL(

    TUint32 aPlaylistId,

    CMPXMediaArray& aMediaArray)

    {

    MPX_DEBUG2("-->CMPXDbPlaylistSongs::GetSongsL(playlist 0x%x)", aPlaylistId);

    RArray<TMPXAttribute> attributes;

    CleanupClosePushL( attributes );

    attributes.AppendL(KMPXMediaGeneralType);

    attributes.AppendL(KMPXMediaGeneralCategory);

    attributes.AppendL(KMPXMediaGeneralId);

    // cannot execute a joined query to the music table

    // because the song records in the music table may be on a different drive

    ExecuteMediaQueryL(attributes.Array(), aMediaArray, KQueryPlaylistSongsGetSongs, aPlaylistId);

    CleanupStack::PopAndDestroy(&attributes);

    MPX_DEBUG1("<--CMPXDbPlaylistSongs::GetSongsL");