/*

* 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 interation with the category tables:

*                Artist, Album, Genre and Composer

*

*/

// INCLUDE FILES

#include <sqldb.h>

#include <mpxlog.h>

#include "mpxdbcommonutil.h"

#include "mpxdbcommondef.h"

#include "mpxdbmanager.h"

#include "mpxcollectiondbdef.h"

#include "mpxmediamusicdefs.h"

#include "mpxdbpluginqueries.h"

#include "mpxdbutil.h"

#include "mpxdbalbum.h"

// CONSTANTS

// maximum number of table name entries per query

const TInt KMaxTableNameCount = 2;

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

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

// Two-phased constructor.

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

//

CMPXDbAlbum* CMPXDbAlbum::NewL(

    CMPXDbManager& aDbManager,

    TMPXGeneralCategory aCategory,

    MMPXDbAlbumObserver& aObserver)

    {

    MPX_FUNC("CMPXDbAlbum::NewL");

    CMPXDbAlbum* self = CMPXDbAlbum::NewLC(aDbManager, aCategory, aObserver);

    CleanupStack::Pop(self);

    return self;

    }

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

// Two-phased constructor.

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

//

CMPXDbAlbum* CMPXDbAlbum::NewLC(

    CMPXDbManager& aDbManager,

    TMPXGeneralCategory aCategory,

    MMPXDbAlbumObserver& aObserver)

    {

    MPX_FUNC("CMPXDbAlbum::NewLC");

    CMPXDbAlbum* self = new (ELeave) CMPXDbAlbum(aDbManager, aCategory, aObserver);

    CleanupStack::PushL(self);

    self->ConstructL();

    return self;

    }

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

// Destructor

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

//

CMPXDbAlbum::~CMPXDbAlbum()

    {

    MPX_FUNC("CMPXDbAlbum::~CMPXDbAlbum");

    }

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

// Constructor

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

//

CMPXDbAlbum::CMPXDbAlbum(

    CMPXDbManager& aDbManager,

    TMPXGeneralCategory aCategory,

    MMPXDbAlbumObserver& aObserver) :

    CMPXDbCategory(aDbManager, aCategory),

    iObserver(aObserver)

    {

    MPX_FUNC("CMPXDbAlbum::CMPXDbAlbum");

    }

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

// Second phase constructor.

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

//

void CMPXDbAlbum::ConstructL()

    {

    MPX_FUNC("CMPXDbAlbum::ConstructL");

    BaseConstructL();

    }

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

// CMPXDbAlbum::AddItemL

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

//

TUint32 CMPXDbAlbum::AddItemL(

    const TDesC& aName,

    TUint32 aArtist,

    const TDesC& aArt,

    TInt aDriveId,

    TBool& aNewRecord,

    TBool aCaseSensitive)

    {

    MPX_FUNC("CMPXDbAlbum::AddItemL");

    // try to find the item first

    TUint32 rowId(MPXDbCommonUtil::GenerateUniqueIdL(iDbManager.Fs(), iCategory,

        aName, aCaseSensitive));

    aNewRecord = !CategoryItemExistsL(aDriveId, rowId);

    if (aNewRecord)

        {      

        // insert new

        HBufC* query = PreProcessStringLC(KQueryAlbumInsert);

        HBufC* name = MPXDbCommonUtil::ProcessSingleQuotesLC(aName);

		HBufC* art = MPXDbCommonUtil::ProcessSingleQuotesLC(aArt);

        iDbManager.ExecuteQueryL(aDriveId, *query, rowId, name, 1, aArtist, art);

		CleanupStack::PopAndDestroy(art);

        CleanupStack::PopAndDestroy(name);

        CleanupStack::PopAndDestroy(query);

        }

    else

        {

        // retrieve the existing record

        HBufC* query = NULL;

        query = PreProcessStringLC(KQueryCategoryItem);

        RSqlStatement recordset(iDbManager.ExecuteSelectQueryL(*query, rowId));

        CleanupStack::PopAndDestroy(query);

        CleanupClosePushL(recordset);

        if (recordset.Next() != KSqlAtRow)

            {

            User::Leave(KErrNotFound);

	    }

        // Artist

        TUint32 artistId = recordset.ColumnInt64(EAlbumArtist);

        // the current one is Unknown and the new one is Not Unknown.

        if ( IsUnknownArtistL( artistId ) && !IsUnknownArtistL( aArtist ) )

            {

            _LIT( KFormatArtistId, "Artist=%d" );

            HBufC* setStr = HBufC::NewLC(KFormatArtistId().Length() + KMCIntegerLen);

            setStr->Des().Format( KFormatArtistId, aArtist );

            iDbManager.ExecuteQueryL(aDriveId, KQueryAlbumUpdate, setStr, rowId);

            CleanupStack::PopAndDestroy(setStr);            

            }

        // Album Art

        TPtrC art(KNullDesC);

        art.Set(MPXDbCommonUtil::GetColumnTextL(recordset, EAlbumArt));

        // the current one is Unknown and the new one is Not Unknown

        if ( art == KNullDesC && aArt != KNullDesC )

            {

            HBufC* artReplaceSingleQuote = 

                MPXDbCommonUtil::ProcessSingleQuotesLC( aArt );

            _LIT( KFormatArt, "Art=\'%S\'" );

            HBufC* setStr = HBufC::NewLC(256);

            setStr->Des().Format( KFormatArt, artReplaceSingleQuote );

            iDbManager.ExecuteQueryL(aDriveId, KQueryAlbumUpdate, setStr, rowId);

            CleanupStack::PopAndDestroy(setStr);		    

            CleanupStack::PopAndDestroy(artReplaceSingleQuote);

            }

        CleanupStack::PopAndDestroy(&recordset);

        // increment the number of songs for the category

        query = PreProcessStringLC(KQueryCategoryIncrementSongCount);

        iDbManager.ExecuteQueryL(aDriveId, *query, rowId);

        CleanupStack::PopAndDestroy(query);

        }

    return rowId;

    }

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

// CMPXDbAlbum::DecrementSongsForCategoryL

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

//

void CMPXDbAlbum::DecrementSongsForCategoryL(

    const TUint32 aId,

    TInt aDriveId,

    CMPXMessageArray* aItemChangedMessages,

    TBool& aItemExist,

    const TUint32 aArtist)

    {

    MPX_FUNC("CMPXDbAlbum::DecrementSongsForCategoryL");

    // if just one song uses this category. Use <= just in case

    if (GetSongsCountL(aDriveId, aId) <= 1)

        {

        aItemExist = EFalse;

        // delete the category

        DeleteCategoryL(aId, aDriveId);

        if (aItemChangedMessages)

            {

            // add the item changed message

            MPXDbCommonUtil::AddItemChangedMessageL(*aItemChangedMessages, aId, EMPXItemDeleted,

                iCategory, KDBPluginUid);

            }

        }

    else

        {

        aItemExist = ETrue;

        // retrieve the existing record

        HBufC* query = PreProcessStringLC(KQueryCategoryItem);

        RSqlStatement recordset(iDbManager.ExecuteSelectQueryL(*query, aId));

        CleanupStack::PopAndDestroy(query);

        CleanupClosePushL(recordset);

        if (recordset.Next() != KSqlAtRow)

            {

            User::Leave(KErrNotFound);

        }

        TUint32 artistId = recordset.ColumnInt64(EAlbumArtist);

        CleanupStack::PopAndDestroy(&recordset);

        // the current artist is equal to deleted song's artist

        if ( artistId == aArtist )

            {

            TUint32 newArtistId = ArtistForAlbumL(aId);

            _LIT( KFormatArtistId, "Artist=%d" );

            HBufC* setStr = HBufC::NewLC(KFormatArtistId().Length() + KMCIntegerLen);

            setStr->Des().Format(KFormatArtistId, newArtistId);

            iDbManager.ExecuteQueryL(aDriveId, KQueryAlbumUpdate, setStr, aId);

            CleanupStack::PopAndDestroy(setStr);

            if (aItemChangedMessages)

                {

                // add the item changed message

                MPXDbCommonUtil::AddItemChangedMessageL(*aItemChangedMessages, aId, EMPXItemModified,

                    iCategory, KDBPluginUid);

                }

            }

        // decrement the number of songs for the category

        query = PreProcessStringLC(KQueryCategoryDecrementSongCount);

        iDbManager.ExecuteQueryL(aDriveId, *query, aId);

        CleanupStack::PopAndDestroy(query);

        }

    }

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

// CMPXDbAlbum::GetAllCategoryItemsL

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

//

void CMPXDbAlbum::GetAllCategoryItemsL(

    const TArray<TMPXAttribute>& aAttrs,

    CMPXMediaArray& aMediaArray)

    {

    MPX_FUNC("CMPXDbAlbum::GetAllCategoryItemsL");

    HBufC* query = PreProcessStringLC(KQueryAlbumAll);

    RSqlStatement recordset(iDbManager.ExecuteSelectQueryL(*query));

    CleanupStack::PopAndDestroy(query);

    CleanupClosePushL(recordset);

    ProcessRecordsetL(aAttrs, recordset, aMediaArray);

    CleanupStack::PopAndDestroy(&recordset);

    }

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

// CMPXDbAlbum::UpdateItemL

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

//

void CMPXDbAlbum::UpdateItemL(

    TUint32 aId, 

    const CMPXMedia& aMedia, 

    TInt aDriveId, 

    CMPXMessageArray* aItemChangedMessages)

	{

	MPX_FUNC("CMPXDbAlbum::UpdateItemL");

	CDesCArrayFlat* fields = new (ELeave) CDesCArrayFlat(EAlbumFieldCount);

	CleanupStack::PushL(fields);

	CDesCArrayFlat* values = new (ELeave) CDesCArrayFlat(EAlbumFieldCount);

	CleanupStack::PushL(values);

	// process the media parameter and construct the fields and values array

	GenerateAlbumFieldsValuesL(aMedia, *fields, *values);

	// construct the SET string

	HBufC* setStr = MPXDbCommonUtil::StringFromArraysLC(*fields, *values, KMCEqualSign, KMCCommaSign);

    if (setStr->Length())

        {

        // execute the query

        iDbManager.ExecuteQueryL(aDriveId, KQueryAlbumUpdate, setStr, aId);

	    TInt oldSongId = (aMedia.ValueTObjectL<TMPXItemId>(KMPXMediaGeneralId)).iId2;	

	    MPXDbCommonUtil::AddItemChangedMessageL(*aItemChangedMessages, aId, EMPXItemModified,

            EMPXAlbum, KDBPluginUid, oldSongId );

        }

	CleanupStack::PopAndDestroy(setStr);

	CleanupStack::PopAndDestroy(values);

	CleanupStack::PopAndDestroy(fields);

	}

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

// CMPXDbAlbum::GetAlbumsCountForArtistL

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

//

TInt CMPXDbAlbum::GetAlbumsCountForArtistL(TUint32 aArtistId)

	{

    RSqlStatement recordset(iDbManager.ExecuteSelectQueryL(KQueryCategorySubcategoryItems, aArtistId));

    TInt prevId(0);

    TInt count(0);

	TInt err(KErrNone);

    while ((err = recordset.Next()) == KSqlAtRow)

		{

		TUint32 rowId(recordset.ColumnInt64(EAlbumUniqueId));

        if (prevId == rowId)

            {

            continue;

            }

		count++;

		prevId = rowId;

		}

    if (err != KSqlAtEnd)

        {

        User::Leave(err);

        }

	return count;

	}

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

// CMPXDbAlbum::GetSongsCountInAlbumMatchingArtistL

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

//

TInt CMPXDbAlbum::GetSongsCountInAlbumMatchingArtistL(TUint32 aArtistId, TUint32 aAlbumId)

	{

	MPX_FUNC("CMPXDbAlbum::GetSongsCountInAlbumMatchingArtistL");

	return ExecuteSumQueryL(KQuerySongsInArtistAlbum, aArtistId, aAlbumId);

	}

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

// CMPXDbAlbum::UpdateMediaL

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

//

void CMPXDbAlbum::UpdateMediaL(

    RSqlStatement& aRecord,

    const TArray<TMPXAttribute>& aAttrs,

    CMPXMedia& aMedia)

    {

    MPX_FUNC("CMPXDbAlbum::UpdateMediaL");

    TInt count(aAttrs.Count());

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

        {

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

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

        if (contentId == KMPXMediaIdGeneral)

            {

            if (attributeId & EMPXMediaGeneralId)

                {

                MPX_DEBUG1("    EMPXMediaGeneralId");

                aMedia.SetTObjectValueL<TMPXItemId>(KMPXMediaGeneralId,

                    aRecord.ColumnInt64(EAlbumUniqueId));

                }

            if (attributeId & EMPXMediaGeneralTitle)

                {

                MPX_DEBUG1("    EMPXMediaGeneralTitle");

                TPtrC album( MPXDbCommonUtil::GetColumnTextL(aRecord, EAlbumName) );

                aMedia.SetTextValueL(KMPXMediaGeneralTitle,

                    MPXDbCommonUtil::GetColumnTextL(aRecord, EAlbumName));

                MPX_DEBUG2("	Album[%S]", &album );

                }

            if (attributeId & EMPXMediaGeneralCount)

                {

                MPX_DEBUG1("    EMPXMediaGeneralCount");

				TInt songCount = GetSongsCountL(KDbManagerAllDrives,

					aRecord.ColumnInt64(EAlbumUniqueId));

                aMedia.SetTObjectValueL<TInt>(KMPXMediaGeneralCount, songCount );

				MPX_DEBUG2("	SongCount[%d]", songCount );

                }

            } // end if contentId == KMPXMediaIdGeneral

		else if ( contentId == KMPXMediaIdMusic )

			{

			if (attributeId & EMPXMediaMusicArtist)

				{				

				MPX_DEBUG1("	EMPXMediaMusicArtist");

				TPtrC artistName(KNullDesC);

				// if album is unknown, ignore arist name

				if (MPXDbCommonUtil::GetColumnTextL(aRecord, EAlbumName) != KNullDesC)

					{

					artistName.Set(MPXDbCommonUtil::GetColumnTextL(aRecord, EAlbumArtistName));

					}

				aMedia.SetTextValueL(KMPXMediaMusicArtist, artistName);

				MPX_DEBUG2("	Artist[%S]", &artistName);

				}

			if (attributeId & EMPXMediaMusicAlbumArtFileName)

				{

				MPX_DEBUG1("	EMPXMediaMusicAlbumArtFileName");

				TPtrC art(KNullDesC);

				// if album is unknown, ignore album art name

				if (MPXDbCommonUtil::GetColumnTextL(aRecord, EAlbumName) != KNullDesC)

					{

					art.Set(MPXDbCommonUtil::GetColumnTextL(aRecord, EAlbumArt));

					}

				aMedia.SetTextValueL(KMPXMediaMusicAlbumArtFileName, art);

				MPX_DEBUG2("	Art[%S]", &art);

				}

			}

		} // end for

    aMedia.SetTObjectValueL<TMPXGeneralType>(KMPXMediaGeneralType, EMPXItem);

    aMedia.SetTObjectValueL<TMPXGeneralCategory>(KMPXMediaGeneralCategory, iCategory);

    }

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

// CMPXDbAlbum::GenerateAlbumFieldsValuesL

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

//

void CMPXDbAlbum::GenerateAlbumFieldsValuesL(const CMPXMedia& aMedia, CDesCArray& aFields, CDesCArray& aValues)

	{

	if (aMedia.IsSupported(KMPXMediaMusicAlbumArtFileName))

		{

		const TDesC& albumArtFilename = aMedia.ValueText(KMPXMediaMusicAlbumArtFileName).Left(KMCMaxTextLen);

		MPXDbCommonUtil::AppendValueL(aFields, aValues, KMCMusicArt, albumArtFilename);

		}

	if (aMedia.IsSupported(KMPXMediaMusicArtist))

	    {

	    const TDesC& artistName = aMedia.ValueText(KMPXMediaMusicArtist).Left(KMCMaxTextLen);

	    TUint32 artistId = MPXDbCommonUtil::GenerateUniqueIdL(iDbManager.Fs(), EMPXArtist,

	            artistName, ETrue);

	    MPXDbCommonUtil::AppendValueL(aFields, aValues, KMCMusicArtist, artistId);	    

	    }

	}

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

// CMPXDbAlbum::IsUnknownArtistL

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

//

TBool CMPXDbAlbum::IsUnknownArtistL(TUint32 aId)

	{

	return iObserver.HandleIsUnknownArtistL(aId);

	}

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

// CMPXDbAlbum::ArtistForAlbumL

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

//

TUint32 CMPXDbAlbum::ArtistForAlbumL(const TUint32 aId)

    {

    return iObserver.HandleArtistForAlbumL(aId);

    }

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

// CMPXDbAlbum::CreateTableL

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

//

void CMPXDbAlbum::CreateTableL(

    RSqlDatabase& aDatabase,

    TBool /* aCorruptTable */)

    {

    MPX_FUNC("CMPXDbCategory::CreateTableL");

    // create the table

    HBufC* query = PreProcessStringLC(KAlbumCreateTable);

    User::LeaveIfError(aDatabase.Exec(*query));

    CleanupStack::PopAndDestroy(query);

    // do not create an index on the Name field

    // as it only slows down the insert/update queries overall

    }

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

// CMPXDbAlbum::CheckTableL

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

//

TBool CMPXDbAlbum::CheckTableL(

    RSqlDatabase& aDatabase)

    {

    MPX_FUNC("CMPXDbCategory::CheckTableL");

    HBufC* query = PreProcessStringLC(KAlbumCheckTable);

    TBool check(DoCheckTable(aDatabase, *query));

    CleanupStack::PopAndDestroy(query);

    return check;