/*

* 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 CNcdNodeuriContent class

*

*/

#include "ncdnodeuricontentimpl.h"

#include "catalogssession.h"

#include "catalogsbasemessage.h"

#include "ncdnodefunctionids.h"

#include "ncdnodeclassids.h"

#include "catalogsconstants.h"

#include "ncd_pp_download.h"

#include "ncd_cp_query.h"

#include "catalogsutils.h"

#include "catalogsdebug.h"

#include "ncdpurchasedetails.h"

#include "ncdutils.h"

CNcdNodeUriContent::CNcdNodeUriContent( NcdNodeClassIds::TNcdNodeClassId aClassId )

: CCatalogsCommunicable(),

  iClassId( aClassId ),

  iValidityDelta( -1 )

    {

    }

void CNcdNodeUriContent::ConstructL()

    {

    iUriContent = KNullDesC().AllocL();

    }

CNcdNodeUriContent* CNcdNodeUriContent::NewL()

    {

    CNcdNodeUriContent* self =   

        CNcdNodeUriContent::NewLC();

    CleanupStack::Pop( self );

    return self;        

    }

CNcdNodeUriContent* CNcdNodeUriContent::NewLC()

    {

    CNcdNodeUriContent* self = 

        new( ELeave ) CNcdNodeUriContent( 

            NcdNodeClassIds::ENcdNodeUriContentClassId );

    CleanupClosePushL( *self );

    self->ConstructL();

    return self;        

    }

CNcdNodeUriContent::~CNcdNodeUriContent()

    {

    DLTRACEIN((""));

    delete iUriContent;

    iUriContent = NULL;

    DLTRACEOUT((""));

    }        

NcdNodeClassIds::TNcdNodeClassId CNcdNodeUriContent::ClassId() const

    {

    return iClassId;

    }

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

// Internalization from purchase details 

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

//

TBool CNcdNodeUriContent::InternalizeL( const MNcdPurchaseDetails& aDetails )

    {

    DLTRACEIN(("this-ptr: %X", this));

    TArray<MNcdPurchaseDownloadInfo*> dlInfo ( aDetails.DownloadInfoL() );

    TInt index = KErrNotFound;                

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

        {

        if ( dlInfo[i]->ContentUsage() == MNcdPurchaseDownloadInfo::EConsumable )

            {

            DLINFO(("Download in index %d is consumable!", i));

            index = i;

            // Only one uri is supported so break immediately as we

            // come across it

            break;

            }

        }

    // Leaves if index is still KErrNotFound, positive indices don't leave

    if ( index == KErrNotFound )

        {

        return EFalse;

        }

    DLTRACE(("Copying content URI"));

    HBufC* uri = dlInfo[index]->ContentUri().AllocL();

    delete iUriContent;

    iUriContent = uri;

    iValidityDelta = dlInfo[index]->ContentValidityDelta();

    DLTRACEOUT(( _L("Content URI: %S"), iUriContent ));

    return ETrue;

    }

// Internalization from and externalization to the database

void CNcdNodeUriContent::ExternalizeL( RWriteStream& aStream )

    {

    DLTRACEIN((""));

    aStream.WriteInt32L( ClassId() );

    ExternalizeDesL( *iUriContent, aStream );

    aStream.WriteInt32L( iValidityDelta );

    DLTRACEOUT((""));

    }

void CNcdNodeUriContent::InternalizeL( RReadStream& aStream )

    {

    DLTRACEIN((""));

    // Read the class id first because it is set to the stream in internalize

    // function and it is not read from the stream anywhere else.

    TInt classId( aStream.ReadInt32L() );

    if ( classId != ClassId() )

        {

        DLTRACE(("Wrong class id"));

        DASSERT( EFalse );

        // Leave because the stream does not match this class object

        User::Leave( KErrCorrupt );

        }

    InternalizeDesL( iUriContent, aStream );

    iValidityDelta = aStream.ReadInt32L();

    DLTRACEOUT((""));

    }

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

// URI getter

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

//

const TDesC& CNcdNodeUriContent::Uri() const

    {    

    DASSERT( iUriContent );

    DLTRACEIN(( _L("%S"), iUriContent ));

    return *iUriContent;

    }

void CNcdNodeUriContent::ReceiveMessage( MCatalogsBaseMessage* aMessage,

                                         TInt aFunctionNumber )

    {

    DLTRACEIN((""));    

    DASSERT( aMessage );

    // Now, we can be sure that rest of the time iMessage exists.

    // This member variable is set for the CounterPartLost function.

    iMessage = aMessage;

    TInt trapError( KErrNone );

    // Check which function is called by the proxy side object.

    // Function number are located in ncdnodefunctinoids.h file.

    switch( aFunctionNumber )

        {

        case NcdNodeFunctionIds::ENcdInternalize:

            // Internalize the proxy side according to the data

            // of this object.

            TRAP( trapError, InternalizeRequestL( *aMessage ) );

            break;

        case NcdNodeFunctionIds::ENcdRelease:

            // The proxy does not want to use this object anymore.

            // So, release the handle from the session.

            ReleaseRequest( *aMessage );

            break;

        default:

            DLERROR(("Unidentified function request"));

            DASSERT( EFalse );

            break;

        }

    if ( trapError != KErrNone )

        {

        // Because something went wrong, the complete has not been

        // yet called for the message.

        // So, inform the client about the error if the

        // message is still available.

        aMessage->CompleteAndRelease( trapError );

        }

    // Because the message should not be used after this, set it NULL.

    // So, CounterPartLost function will know that no messages are

    // waiting the response at the moment.

    iMessage = NULL;        

    DLTRACEOUT((""));

    }

void CNcdNodeUriContent::CounterPartLost( const MCatalogsSession& aSession )

    {

    // This function may be called whenever -- when the message is waiting

    // response or when the message does not exist.

    // iMessage may be NULL here, because in the end of the

    // ReceiveMessage it is set to NULL. The life time of the message

    // ends shortly after CompleteAndRelease is called.

    if ( iMessage != NULL )

        {

        iMessage->CounterPartLost( aSession );

        }

    }

void CNcdNodeUriContent::InternalizeRequestL( MCatalogsBaseMessage& aMessage )

    {

    DLTRACEIN((""));

    CBufBase* buf = CBufFlat::NewL( KBufExpandSize );

    CleanupStack::PushL( buf );

    RBufWriteStream stream( *buf );

    CleanupClosePushL( stream );

    // Include all the necessary node data to the stream

    ExternalizeDataForRequestL( stream );     

    // Commits data to the stream when closing.

    CleanupStack::PopAndDestroy( &stream );

    // If this leaves, ReceiveMessage will complete the message.

    // NOTE: that here we expect that the buffer contains at least

    // some data. So, make sure that ExternalizeDataForRequestL inserts

    // something to the buffer.

    aMessage.CompleteAndReleaseL( buf->Ptr( 0 ), KErrNone );        

    DLTRACE(("Deleting the buf"));

    CleanupStack::PopAndDestroy( buf );

    DLTRACEOUT((""));

    }

void CNcdNodeUriContent::ExternalizeDataForRequestL( RWriteStream& aStream )

    {

    DLTRACEIN((""));

    ExternalizeL( aStream ); 

    DLTRACEOUT((""));

    }

void CNcdNodeUriContent::ReleaseRequest( MCatalogsBaseMessage& aMessage ) const

    {

    DLTRACEIN((""));

    // Decrease the reference count for this object.

    // When the reference count reaches zero, this object will be destroyed

    // and removed from the session.

    MCatalogsSession& requestSession( aMessage.Session() );

    TInt handle( aMessage.Handle() );

    // Send complete information back to proxy.

    aMessage.CompleteAndRelease( KErrNone );

    // Remove this object from the session.

    requestSession.RemoveObject( handle );

    DLTRACEOUT((""));

    }