/*

* 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 the License "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:    Listens events from IPTV server*

*/

// INCLUDE FILES

#include "IptvDebug.h"

#include <s32mem.h>

#include "IptvClientServerCommon.h"

#include "CIptvEventListener.h"

#include "CIptvEvents.h"

#include "MIptvEvent.h"

#include "CIptvClientBase.h"

#include "IptvServer.pan"

// EXTERNAL DATA STRUCTURES

// EXTERNAL FUNCTION PROTOTYPES  

// CONSTANTS

// MACROS

// LOCAL CONSTANTS AND MACROS

// MODULE DATA STRUCTURES

// LOCAL FUNCTION PROTOTYPES

// FORWARD DECLARATIONS

// ============================= LOCAL FUNCTIONS ===============================

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

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

// CIptvEventListener::CIptvEventListener

// C++ default constructor can NOT contain any code, that

// might leave.

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

//

CIptvEventListener::CIptvEventListener( CIptvClientBase& aClient,

                                        MIptvEvent* aEventProto,

                                        TInt aSizeReqMsgId,

                                        TInt aDataMsgId,

                                        TInt aCancelSizeReqMsgId )

: CActive(EPriorityStandard),

  iClient(aClient),

  iEventProto(aEventProto),

  iSizeReqMsgId(aSizeReqMsgId),

  iDataMsgId(aDataMsgId),

  iCancelSizeReqMsgId(aCancelSizeReqMsgId)

    {

    IPTVLOGSTRING_HIGH_LEVEL("CIptvEventListener::CIptvEventListener()");

    CActiveScheduler::Add( this );

    IPTVLOGSTRING_HIGH_LEVEL("CIptvEventListener::CIptvEventListener() exit");

    }

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

// CIptvEventListener::ConstructL

// Symbian 2nd phase constructor can leave.

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

//

void CIptvEventListener::ConstructL()

    {

    IPTVLOGSTRING_HIGH_LEVEL("CIptvEventListener::ConstructL()");    

    SendSizeReqL();

    IPTVLOGSTRING_HIGH_LEVEL("CIptvEventListener::ConstructL() exit");

    }

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

// CIptvEventListener::NewL

// Two-phased constructor.

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

//

CIptvEventListener* CIptvEventListener::NewL( CIptvClientBase& aClient,

                                              MIptvEvent* aEventProto,

                                              TInt aSizeReqMsgId,

                                              TInt aDataMsgId,

                                              TInt aCancelSizeReqMsgId )

    {

    IPTVLOGSTRING_HIGH_LEVEL("CIptvEventListener::NewL()");

    CIptvEventListener* self = new( ELeave ) CIptvEventListener( aClient,

                                                                 aEventProto,

                                                                 aSizeReqMsgId,

                                                                 aDataMsgId,

                                                                 aCancelSizeReqMsgId );

    CleanupStack::PushL( self );

    IPTVLOGSTRING2_HIGH_LEVEL("CIptvEventListener:: this = %d", self);

    self->ConstructL();

    CleanupStack::Pop(self);

    IPTVLOGSTRING_HIGH_LEVEL("CIptvEventListener::NewL() exit");

    return self;

    }

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

// CIptvEventListener::RunL

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

//

void CIptvEventListener::RunL()

    {

    TInt error = iStatus.Int();

    const TInt KMaxErrors = 10;

    if (error != KErrNone)

        {

        IPTVLOGSTRING2_HIGH_LEVEL("CIptvEventListener:: request completed with error code: %d", error);

        switch(error)

            {

            case KErrServerTerminated:

                {

                IPTVLOGSTRING_HIGH_LEVEL("CIptvEventListener:: server has terminated, panicing client!");

                User::Panic(KIptvEventListener, error);

                }

                break;

            case KErrCancel:

                {

                IPTVLOGSTRING_HIGH_LEVEL("CIptvEventListener:: KErrCancel received");                        

                }

                break;

            default:

                {

                iErrorCounter++;

                if (iErrorCounter < KMaxErrors)

                    {

                    IPTVLOGSTRING_HIGH_LEVEL("CIptvEventListener:: sending new size request");

                    SendSizeReqL();

                    }

                else

                    {

                    IPTVLOGSTRING_HIGH_LEVEL("CIptvEventListener:: too many errors, panicing client");

                    User::Panic(KIptvEventListener, EMaxErrorsExceeded);

                    }

                }

            }

        }

    else

        {

        iErrorCounter = 0;

        }

    if ( iPendingMsgId == iSizeReqMsgId )

        {

        IPTVLOGSTRING2_HIGH_LEVEL("CIptvEventListener:: (%d) event size msg arrived", this);

        RDesReadStream readStream;

        readStream.Open(iSizeRequestIpcMsg);

        CleanupClosePushL(readStream); // 1->

        TUint32 size = readStream.ReadUint32L();

        CleanupStack::PopAndDestroy(&readStream); // <-1

        CIptvEvents* events = CIptvEvents::NewL(iEventProto->GetCopyL());

        CleanupStack::PushL(events); // 1->

        IPTVLOGSTRING2_HIGH_LEVEL("CIptvEventListener:: (%d) sending data req", this);

        TInt err = iClient.SendRequestL( static_cast<TUint16>(iDataMsgId),

                                         *events,

                                         static_cast<TInt>(size) );

        if ( err == KErrNone )

            {

            TInt eventCount = events->iEvents.Count();

            IPTVLOGSTRING3_HIGH_LEVEL("CIptvEventListener:: (%d) received %d events", this, eventCount);

            TInt i;

            for ( i = 0; i < eventCount; i++ )

                {

                iClient.HandleEvent( *(events->iEvents[i]) );

                }

            }

        else

            {

            IPTVLOGSTRING2_HIGH_LEVEL("CIptvEventListener:: (%d) failed to receive vod dl events", this);

            }

        CleanupStack::PopAndDestroy(events); // <-1

        SendSizeReqL();

        }

    else

        {

        IPTVLOGSTRING2_HIGH_LEVEL("CIptvEventListener:: (%d) unknown msg received-> panic", this);

        User::Panic(KIptvEventListener, EIptvUnknownMessage);

        }

    }

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

// CIptvEventListener::DoCancel

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

//

void CIptvEventListener::DoCancel()

    {

    iClient.iSession.SendRequest(iCancelSizeReqMsgId); //sync, server side is gone when this finishes

    }

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

// Destructor.

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

//    

CIptvEventListener::~CIptvEventListener()

    {

    IPTVLOGSTRING2_LOW_LEVEL("CIptvEventListener::~CIptvEventListener() (%d)", this);

    Cancel(); //calls DoCancel if there is message pending

    if ( iEventProto )

        {

        iEventProto->Destruct();

        }

    IPTVLOGSTRING2_LOW_LEVEL("CIptvEventListener::~CIptvEventListener() (%d) exit", this);

    }

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

// CIptvEventListener::SendSizeReqL

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

//

void CIptvEventListener::SendSizeReqL()

    {   

    IPTVLOGSTRING2_LOW_LEVEL("CIptvEventListener:: (%d) sending size req", this);

    iClient.iSession.SendRequest(iSizeReqMsgId, iSizeRequestIpcMsg, iStatus);

    SetActive();

    iPendingMsgId = iSizeReqMsgId;

    }