/*

* Copyright (c) 2008 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:  ?Description

 *

*/

#include <liwcommon.h>

#include <s32mem.h>

#include "cpnotificationhandler.h"

#include "cpdebug.h"

#include "cpliwmap.h"

#include "cpglobals.h"

#include "cpserverdef.h"

static const int KMaxKeyLength =  256;

using namespace LIW;

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

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

// 

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

//

CCPNotificationHandler::CCPNotificationHandler( TLiwVariant& aDataMapCache ):

        iDataMapCache(aDataMapCache)

    {

    }

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

// 

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

//

void CCPNotificationHandler::ConstructL( RPointerArray<CLiwDefaultList>& 

        aNotifications)

    {

    iChangeInfoList = CLiwGenericParamList::NewL( );

    for ( TInt i(0); i< aNotifications.Count( ); i++ )

        {

        iNotifications.AppendL(aNotifications[i]);

        aNotifications[i]->IncRef();

        }    

    }

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

// 

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

//

CCPNotificationHandler* CCPNotificationHandler::NewL(RPointerArray<

        CLiwDefaultList>& aNotifications, TLiwVariant& aDataMapCache)

    {

    CCPNotificationHandler* self = CCPNotificationHandler::NewLC(

            aNotifications, aDataMapCache);

    CleanupStack::Pop( self );

    return self;

    }

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

// 

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

//

CCPNotificationHandler* CCPNotificationHandler::NewLC(RPointerArray<

        CLiwDefaultList>& aNotifications, TLiwVariant& aDataMapCache)

    {

    CCPNotificationHandler* self = new (ELeave) CCPNotificationHandler(

            aDataMapCache);

    CleanupStack::PushL( self );

    self->ConstructL( aNotifications );

    return self;

    }

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

// 

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

//

CCPNotificationHandler::~CCPNotificationHandler()

    {

    THashMapIter<TInt32, CCPLiwMap*> iter( iFilters );

    const TInt32* transaction = iter.NextKey();

    while( transaction )

        {

        CCPLiwMap** filter = iFilters.Find( *transaction );// leaves if not found

        if ( filter )

        	{

        	(*filter)->Reset();

        	(*filter)->Close();

        	}

        transaction = iter.NextKey( );

        }  

    iFilters.Close();    

    iExtendedFlags.Close();

    Reset( );

    for ( TInt i(0); i< iNotifications.Count( ); i++ )

        {

        iNotifications[i]->Close( );

        }

    iNotifications.Close( );

    delete iChangeInfoList;

    }

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

//

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

//    

void CCPNotificationHandler::SaveMessageL( const RMessage2& aMessage )

    {

    iIsReadyToSend = ETrue;

    iMessage = aMessage;

    TInt32 transactionId = aMessage.Int3();

    if ( transactionId != KErrAlreadyExists )

    	{

    	TInt deslen = aMessage.GetDesLengthL( KDescriptorPosition );

    	if( deslen > 0 )

    		{

    		HBufC8* buffer = HBufC8::NewLC( deslen );

    		TPtr8 tempDes = buffer->Des( );

    		aMessage.Read( KDescriptorPosition, tempDes );

    		RDesReadStream datastrm( *buffer);

    		CleanupClosePushL( datastrm );

    		CCPLiwMap* filterMap = CCPLiwMap::NewL( datastrm );

    		CleanupStack::PushL( filterMap );

    		iFilters.InsertL( transactionId, filterMap );

    	    TUint options = static_cast<TUint> (aMessage.Int2()); // 2 == KOptionsPosition

            iExtendedFlags.InsertL(transactionId, options

                    & KExtendedNotifications);

    		CleanupStack::Pop( filterMap );

    		CleanupStack::PopAndDestroy( &datastrm );

    		CleanupStack::PopAndDestroy( buffer );

    		}

    	}

	if ( iNotifications.Count( ) )

		{

		SendNotificationL( NULL );

		}   

    }

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

//

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

//    

void CCPNotificationHandler::AddObserverL( const RMessage2& aMessage )

    {

    TInt32 transactionId = aMessage.Int3();

    TInt deslen = aMessage.GetDesLength( KDescriptorPosition );

    if( deslen > 0 )

        {

        HBufC8* buffer = HBufC8::NewLC( deslen );

        TPtr8 tempDes = buffer->Des( );

        aMessage.Read( KDescriptorPosition, tempDes );

        RDesReadStream datastrm( *buffer);

        CleanupClosePushL( datastrm );

        CCPLiwMap* filterMap = CCPLiwMap::NewL( datastrm );

		CleanupStack::PushL( filterMap );

        iFilters.InsertL( transactionId, filterMap );

        TUint options = static_cast<TUint> (aMessage.Int2()); // 2 == KOptionsPosition

        iExtendedFlags.InsertL(transactionId, options

                & KExtendedNotifications);

		CleanupStack::Pop( filterMap );

        CleanupStack::PopAndDestroy( &datastrm );

        CleanupStack::PopAndDestroy( buffer );

        }    

    }

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

//

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

//    

void CCPNotificationHandler::RemoveObserverL( const RMessage2& aMessage )

    {

    TInt32 transactionId = aMessage.Int3();

    CCPLiwMap* filter = iFilters.FindL( transactionId );// leaves if not found

    filter->Reset();

    filter->Close();

    iFilters.Remove( transactionId );

    iExtendedFlags.Remove( transactionId );

    }

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

// 

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

//

TBool CCPNotificationHandler::IsProperForFilterL( const CLiwMap& aMap, 

		const CCPLiwMap& aFilter )

    {

    CP_DEBUG( _L8("CCPNotificationHandler::IsProperForFilter()") );

    TBool result( EFalse );

    if( CheckRegistryTypeL( aMap, aFilter ) && 

    		CheckOperationTypeL( aMap, aFilter ) )

        {

        if( CheckIdL( aMap, aFilter ) )

            {

            result= ETrue;

            }

        else if( CheckPropertiesL( aMap, aFilter ) )

            {

            result = ETrue;

            }

        }

    return result;

    }

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

//

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

//

void CCPNotificationHandler::SendNotificationL( CLiwDefaultList* aListOfMaps )

    {

    CP_DEBUG( _L8("CCPNotificationHandler::SendNotificationL()") );

    if ( iIsReadyToSend )

        {

        //notification can be send

        if ( iNotifications.Count( ) )

            {

            //at least one notification is waiting to be sent

            TBool sent;

            sent = SendChangeInfoListL( iNotifications[0] );

            iNotifications[0]->Close( );

            iNotifications.Remove( 0 );

            if ( !sent )

                {

                //if notification from array wasn't sent because it didn't 

                //match the filter, try to send the next one

                SendNotificationL( NULL );

                }

            else

                {

                //message was send

                iIsReadyToSend = EFalse;

                }

            }

        else

            {

            //no notification is waiting, so send the new one

            if ( aListOfMaps && SendChangeInfoListL( aListOfMaps ) )

                {

                iIsReadyToSend = EFalse;

                }

            }

        }

    else

        {

        //notification cannot be sent in this moment

        aListOfMaps->IncRef( );

        iNotifications.AppendL( aListOfMaps );

        }

    }

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

//

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

//

const CLiwGenericParamList* CCPNotificationHandler::GetPointerToChangeInfoList()

    {

    return iChangeInfoList;

    }

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

//

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

//

void CCPNotificationHandler::Reset()

    {

    iIsReadyToSend = EFalse;

    iChangeInfoList->Reset( );

    }

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

//

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

//

void CCPNotificationHandler::ErrorComplete( TInt aErrCode )

    {

    if( iIsReadyToSend && iMessage.IsNull() == EFalse )

        {

        iMessage.Complete( aErrCode );

        iIsReadyToSend = EFalse;

        }

    }

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

//

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

//

TBool CCPNotificationHandler::SendChangeInfoListL(

    const CLiwDefaultList* aListOfMaps )

    {

    CP_DEBUG( _L8("CCPNotificationHandler::SendChangeInfoListL()") );

	iChangeInfoList->Reset( );

    TBool sent(EFalse);

    //for every observer in session

    THashMapIter<TInt32, CCPLiwMap*> iter( iFilters );

    const CCPLiwMap*const* filter = iter.NextValue( );

    while( filter )

        {

        CLiwDefaultList* listOfMatchingMaps = CLiwDefaultList::NewLC( );

        TInt count = aListOfMaps->Count( );

        //for every item in the input list

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

			{

	        TLiwVariant variant;

	        variant.PushL( );

			aListOfMaps->AtL( j, variant );

            if ( variant.TypeId() == EVariantTypeMap )

                {

                const CLiwMap* map = variant.AsMap();

                if ( IsProperForFilterL( *map, **filter ) )

                    {

                    if (iExtendedFlags.FindL(*iter.CurrentKey())

                            && (iDataMapCache.TypeId() == EVariantTypeDesC8))

                        {

                        //extended notifications - append data map

                        CLiwDefaultMap* extendedMap = CLiwDefaultMap::NewLC();

                        TInt count = map->Count();

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

                            {

                            TLiwVariant temporary;

                            temporary.PushL();

                            TBuf8<KMaxKeyLength> key;

                            map->AtL(i,key);

                            map->FindL(key, temporary);

                            extendedMap->InsertL(key,temporary);

                            CleanupStack::PopAndDestroy(&temporary);

                            }

                        extendedMap->InsertL(KDataMap,iDataMapCache);

                        listOfMatchingMaps->AppendL( TLiwVariant(extendedMap) );

                        CleanupStack::PopAndDestroy(extendedMap);

                        }

                    else

                        {

                        listOfMatchingMaps->AppendL( variant );

                        }

                    }

                }

            CleanupStack::PopAndDestroy( &variant );

			}

		if ( listOfMatchingMaps->Count( ) )

			{

			//append transaction id

			listOfMatchingMaps->AppendL( TLiwVariant( *iter.CurrentKey() ));

			iChangeInfoList->AppendL( TLiwGenericParam( KChangeInfo,

				TLiwVariant( listOfMatchingMaps ) ) );

			}

		CleanupStack::PopAndDestroy( listOfMatchingMaps );

		filter = iter.NextValue( );

        }

    if( iChangeInfoList->Count( ) )

    	{

    	TPckgBuf<TInt> sizeDes( iChangeInfoList->Size( ) );

    	TInt err = iMessage.Write( KReturnPosition, sizeDes );

    	iMessage.Complete( err );

    	sent = ETrue;

    	}

	return sent;

    }

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

//

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

//

void CCPNotificationHandler::GetPropertyL( const CLiwMap& aMap,

    const TDesC8& aProperty, RBuf& aResult )

    {

    TLiwVariant value;

    value.PushL( );

    if ( aMap.FindL( aProperty, value ) )

        {

        TPtrC result( KNullDesC );

        value.Get( result );

        aResult.CreateL( result );

        }

    CleanupStack::PopAndDestroy( &value );

    }

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

//

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

//

TBool CCPNotificationHandler::CheckIdL( const CLiwMap& aMap, 

		const CCPLiwMap& aFilter )

    {

    TBool result = EFalse;

    TInt32 id( 0);

    if ( aFilter.GetProperty( KId, id ) )

        {

        TLiwVariant value;

        value.PushL( );

        if ( aMap.FindL( KId, value ) )

            {

            TUint idToCompare( 0);

            if ( value.Get( idToCompare ) )

                {

                if ( id == idToCompare )

                    {

                    result = ETrue;

                    }

                }

            }

        CleanupStack::PopAndDestroy( &value );

        }

    return result;

    }

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

//

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

//

TBool CCPNotificationHandler::CheckPropertiesL( const CLiwMap& aMap,

		const CCPLiwMap& aFilter )

    {

    TBool result( EFalse );

    TBool publisherName( ETrue );

    TBool contentType( ETrue );

    TBool contentId( ETrue );

    RBuf publisher;

    publisher.CleanupClosePushL();

    if ( aFilter.GetPropertyL( KPublisherId, publisher ) )

        {

        if ( publisher != KAll )

            {

            RBuf str2compare;

            str2compare.CleanupClosePushL();

            GetPropertyL( aMap, KPublisherId, str2compare );

            if ( publisher!=str2compare )

                {

                publisherName = EFalse;

                }

            CleanupStack::PopAndDestroy( &str2compare );

            }

        }

    RBuf content;

    content.CleanupClosePushL();

    if ( aFilter.GetPropertyL( KContentType, content ) )

        {

        if ( content != KAll )

            {

            RBuf str2compare;

            str2compare.CleanupClosePushL();

            GetPropertyL( aMap, KContentType, str2compare );

            if ( content!=str2compare )

                {

                contentType = EFalse;

                }

            CleanupStack::PopAndDestroy( &str2compare );

            }

        }

    RBuf content_id;

    content_id.CleanupClosePushL();

    if ( (publisher != KAll)||(content != KAll) )

        {

        if ( aFilter.GetPropertyL( KContentId, content_id ) )

            {

            if ( content_id != KAll )

                {

				RBuf str2compare;

				str2compare.CleanupClosePushL();

				GetPropertyL( aMap, KContentId, str2compare );

				if ( content_id!=str2compare )

					{

					contentId = EFalse;

					}

				CleanupStack::PopAndDestroy( &str2compare );

                }

            }

        }

    if ( publisherName && contentType && contentId )

        {

        result = ETrue;

        }

    CleanupStack::PopAndDestroy( &content_id );

    CleanupStack::PopAndDestroy( &content );

    CleanupStack::PopAndDestroy( &publisher );

    return result;

    }

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

//

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

//

TBool CCPNotificationHandler::CheckOperationTypeL( const CLiwMap& aMap,

		const CCPLiwMap& aFilter )

    {

    TBool result = ETrue;

    RBuf operation;

    operation.CleanupClosePushL();

    if ( aFilter.GetPropertyL( KOperation, operation ) )

        {

        result = EFalse;

        TLiwVariant value;

        value.PushL( );

        if ( aMap.FindL( KOperation, value ) )

            {

            TPtrC operationToCompare( KNullDesC );

            if ( value.Get( operationToCompare ) )

                {

                if ( operation.Find( operationToCompare ) != KErrNotFound )

                    {

                    result = ETrue;

                    }

                }

            }