/*

* Copyright (c) 2006 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:  Implements the cell id database

*

*/

#include "lbtcelliddatabase.h"

/**

 * Maximum entry that database can hold 

 */

static const TInt KMaxEntry = 25;

/**

 * Index of the entry that needs to removed.

 */

static const TInt EIndexToBeRemoved = 0;

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

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

// CLbtCellIdDatabase::NewL

// The Symbian 2 phase constructor

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

//

CLbtCellIdDatabase* CLbtCellIdDatabase::NewL()

    {

    CLbtCellIdDatabase* self = new(ELeave) CLbtCellIdDatabase;

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

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

// CLbtCellIdDatabase::CLbtCellIdDatabase

// Default constructor

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

//

CLbtCellIdDatabase::CLbtCellIdDatabase()

    {

    }

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

// CLbtCellIdDatabase::ConstructL

//

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

//

void CLbtCellIdDatabase::ConstructL()

    {

    }

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

// CLbtCellIdDatabase::~CLbtCellIdDatabase

// Destructor

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

//

CLbtCellIdDatabase::~CLbtCellIdDatabase()

    {

    iCellIdDbArray.Close();

    }

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

// CLbtCellIdDatabase::InsertCidLocationL

// 

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

//

void CLbtCellIdDatabase::InsertCidLocation( TInt32 aCountryCode, 

                                            TInt32 aNetworkID, 

                                            TInt32 aLac, 

                                            TInt32 aCellId,

                                            TLocality aLocality )

    {

    if( IsDuplicateEntry( aCountryCode,aNetworkID,aLac,aCellId,aLocality ) )

        {

        return;

        }

    TCellIdCoordinateData cellIdCoordinateData;

    cellIdCoordinateData.iCountryCode = aCountryCode;

    cellIdCoordinateData.iNetworkID = aNetworkID;

    cellIdCoordinateData.iLac = aLac;

    cellIdCoordinateData.iCellId = aCellId;

    cellIdCoordinateData.iLocality.SetCoordinate( aLocality.Latitude(),

                                                  aLocality.Longitude(),

                                                  aLocality.Altitude() );

    cellIdCoordinateData.iLocality.SetHorizontalAccuracy( aLocality.HorizontalAccuracy() );

    if( iCellIdDbArray.Count() == KMaxEntry )

        {

        iCellIdDbArray.Remove( EIndexToBeRemoved );

        }

    TInt error = iCellIdDbArray.Append( cellIdCoordinateData );

    }

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

// CLbtCellIdDatabase::GetLocationForCid

// 

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

//

TInt CLbtCellIdDatabase::GetLocationForCid( TInt32 aCountryCode, 

                                            TInt32 aNetworkID, 

                                            TInt32 aLac,

                                            TInt32 aCellId,

                                            TLocality& aLocality )

    {

    for( TInt i=0;i<iCellIdDbArray.Count();i++ )

        {

        if( iCellIdDbArray[i].iCountryCode == aCountryCode &&

            iCellIdDbArray[i].iNetworkID == aNetworkID && 

            iCellIdDbArray[i].iLac == aLac &&

            iCellIdDbArray[i].iCellId == aCellId )

            {

            aLocality.SetCoordinate( iCellIdDbArray[i].iLocality.Latitude(),

                                     iCellIdDbArray[i].iLocality.Longitude(),

                                     iCellIdDbArray[i].iLocality.Altitude() );

            aLocality.SetHorizontalAccuracy( iCellIdDbArray[i].iLocality.HorizontalAccuracy() );

            // This entry has been used and should be deleted last compared to 

            // unused entry. This is pushed to the end because we delete 

            // entry from first when max cap is reached.

            iCellIdDbArray.Append( iCellIdDbArray[i] );

            iCellIdDbArray.Remove( i );

            return KErrNone;

            }

        }

    return KErrNotFound;

    }

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

// CLbtCellIdDatabase::IsDuplicateEntry

// 

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

//

TBool CLbtCellIdDatabase::IsDuplicateEntry( TInt32 aCountryCode, 

                                            TInt32 aNetworkID, 

                                            TInt32 aLac, 

                                            TInt32 aCellId,

                                            TLocality aLocality )

    {

    for( TInt i=0;i<iCellIdDbArray.Count();i++ )

        {

        if( iCellIdDbArray[i].iCountryCode == aCountryCode &&

            iCellIdDbArray[i].iNetworkID == aNetworkID && 

            iCellIdDbArray[i].iLac == aLac &&

            iCellIdDbArray[i].iCellId == aCellId )

            {

            // If the HA of the current entry is less than the existing entry,

            // replace the old entry with new one.

            if( aLocality.HorizontalAccuracy() < iCellIdDbArray[i].iLocality.HorizontalAccuracy() )

                {

                iCellIdDbArray[i].iLocality.SetCoordinate( aLocality.Latitude(),

                                                           aLocality.Longitude(),

                                                           aLocality.Altitude() );

                iCellIdDbArray[i].iLocality.SetHorizontalAccuracy( aLocality.HorizontalAccuracy() );

                }

            return ETrue;

            }

        }

    return EFalse;

    }