/*

* Copyright (c) 2006-2008 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:  Hold controller, interface class to SVP sessions

*

*/

#include    <mcesession.h>

#include    <mcemediastream.h>

#include    <mceaudiostream.h>

#include    "svpholdcontroller.h"

#include    "svpholdmediahandler.h"

#include    "svpholdobserver.h"

#include    "svpsessionbase.h"

#include    "svpsipconsts.h"

#include    "svpconsts.h"

#include    "svplogger.h"

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

// CSVPHoldController::CSVPHoldController

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

//

CSVPHoldController::CSVPHoldController() :

        iContext( NULL ),

        iPreviousHoldState( ESVPHoldConnected ),

        iHoldRequestCompleted( EFalse ),

        iHoldRequest( ESVPHoldNoRequest ),

        iReinviteCrossover( EFalse )

    {

    }

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

// CSVPHoldController::ConstructL

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

//

void CSVPHoldController::ConstructL( 

                            CMceSession& aSession,

                            TMceTransactionDataContainer& aContainer,

                            MSVPHoldObserver* aObserver,

                            TBool aIsMobileOriginated )

    {

    iContext = CSVPHoldContext::NewL( aSession, aContainer, aObserver,

                                      aIsMobileOriginated );

    }

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

// CSVPHoldController::NewL

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

//

CSVPHoldController* CSVPHoldController::NewL( 

                            CMceSession& aSession,

                            TMceTransactionDataContainer& aContainer,

                            MSVPHoldObserver* aObserver,

                            TBool aIsMobileOriginated )

    {    

    CSVPHoldController* self = new ( ELeave ) CSVPHoldController();

    CleanupStack::PushL( self );

    self->ConstructL( aSession, aContainer, aObserver,

                      aIsMobileOriginated );

    CleanupStack::Pop( self );

    return self;

    }

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

// CSVPHoldController::NewLC

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

//

CSVPHoldController* CSVPHoldController::NewLC( 

                            CMceSession& aSession,

                            TMceTransactionDataContainer& aContainer,

                            MSVPHoldObserver* aObserver,

                            TBool aIsMobileOriginated )

    {

    CSVPHoldController* self = new ( ELeave ) CSVPHoldController();

    CleanupStack::PushL( self );

    self->ConstructL( aSession, aContainer, aObserver,

                      aIsMobileOriginated );

    return self;

    }

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

// CSVPHoldController::~CSVPHoldController

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

//

CSVPHoldController::~CSVPHoldController()

    {

    delete iContext;

    SVPDEBUG1( "CSVPHoldController::~CSVPHoldController Done" );

    }

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

// CSVPHoldController::RetryHoldRequest

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

//

TInt CSVPHoldController::RetryHoldRequest( CMceSession* aSession )

    {

    SVPDEBUG1( "CSVPHoldController::RetryHoldRequest -- IN" );

    TInt err = KErrNone;

    switch ( iHoldRequest )

        {

        case ESVPHoldToHold:

            {

            SVPDEBUG1( "CSVPHoldController::RetryHoldRequest -- Hold" );

            err = HoldSession( aSession );

            break;

            }

        case ESVPHoldToResume:

            {

            SVPDEBUG1( "CSVPHoldController::RetryHoldRequest -- Resume" );

            err = ResumeSession( aSession );

            break;

            }

        default:

            {

            SVPDEBUG1( "CSVPHoldController::RetryHoldRequest -- No request!!" );

            err = KErrNotFound;

            break;

            }

        }

    iHoldRequest = ESVPHoldNoRequest;

    SVPDEBUG1( "CSVPHoldController::RetryHoldRequest -- OUT" );

    return err;

    }

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

// CSVPHoldController::HoldSession

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

//

TInt CSVPHoldController::HoldSession( CMceSession* aSession )

    {

    SVPDEBUG1( "CSVPHoldController::HoldSession -- IN" );

    if ( HoldAllowed() )

        {

        iHoldRequest = ESVPHoldToHold;

        iHoldRequestCompleted = EFalse;

        SVPDEBUG1( "CSVPHoldController::HoldSession -- Allowed" );

        TInt err = KErrNone;

        iContext->SetSessionObject( aSession );

        TRAP( err, iContext->ApplyCurrentStateL( aSession,

                                                 ESVPHoldToHold ) );

        SVPDEBUG2(

        "CSVPHoldController::HoldSession -- ApplyCurrentState done, err = %i",

         err );

        switch ( err )

            {                

            case KErrSVPHoldLocalOldwayholdNeeded:

                {

                SVPDEBUG1(

                "CSVPHoldController::HoldSession: Oldway hold needed" );

                iContext->SetFirstAttempt( EFalse ); // Clearing the flag                

                TRAP( err, iContext->ApplyCurrentStateL( aSession,

                                                         ESVPHoldToHold ) );

                return err;

                }

            default:

                {

                SVPDEBUG2(

                "CSVPHoldController::HoldSession - default, err: %i", err );

                return err;

                }

            }        

        }

    else

        {

        return KErrSVPHoldInProgress;

        }

    }

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

// CSVPHoldController::ResumeSession

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

//

TInt CSVPHoldController::ResumeSession( CMceSession* aSession )

    {

    if ( ResumeAllowed() )

        {

        iHoldRequest = ESVPHoldToResume;

        iHoldRequestCompleted = EFalse;

        TInt err = KErrNone;

        iContext->SetSessionObject( aSession );

        TRAP( err, iContext->ApplyCurrentStateL( aSession,

                                                 ESVPHoldToResume ) );

        return err;

        }

    else

        {

        return KErrSVPHoldResumeInProgress;

        }

    }

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

// CSVPHoldController::TimedOut

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

//

void CSVPHoldController::TimedOut()

    {

    iContext->TimedOut();

    }

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

// CSVPHoldController::IncomingRequest

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

//

TInt CSVPHoldController::IncomingRequest( CMceSession* aSession )

    {

    SVPDEBUG1( "CSVPHoldController::IncomingRequest IN" )

    if ( IncomingRequestAllowed() )

        {

        SVPDEBUG1( "CSVPHoldController::IncomingRequest allowed" )

        iHoldRequestCompleted = EFalse;

        iContext->SetSessionObject( aSession );

        TInt err = KErrNone;

        TRAP( err, iContext->ApplyCurrentStateL( aSession,

                                                 ESVPHoldIncoming ) );

        if ( KErrSVPHoldNotHoldRequest == err )

            {

            iHoldRequestCompleted = ETrue;

            }

        return err;            

        }

    else

        {

        SVPDEBUG1( "CSVPHoldController::IncomingRequest not allowed!" )

        return KErrSVPHoldRequestPending;

        }    

    }

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

// CSVPHoldController::IncomingResponse

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

//

TInt CSVPHoldController::IncomingResponse( 

                            CMceSession* aSession, 

                            TInt aStatusCode )

    {

    if ( IncomingResponseAllowed() )

        {

        SVPDEBUG1( "CSVPHoldController::IncomingResponse - Allowed" );

        iContext->SetSessionObject( aSession );

        iContext->SetResponseStatusCode( aStatusCode );

        TInt err = KErrNone;

        TRAP( err, iContext->ApplyCurrentStateL() );

        iContext->SetResponseStatusCode( KErrNotFound );

        SVPDEBUG2( "CSVPHoldController::IncomingResponse - Error = %i", err );                                         

        return err;            

        }

    else

        {

        SVPDEBUG1( "CSVPHoldController::IncomingResponse - not Allowed!" );

        return KErrSVPHoldRequestPending;

        }        

    }

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

// CSVPHoldController::HoldInProgress

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

//

TBool CSVPHoldController::HoldInProgress() const

    {

    return !iHoldRequestCompleted;

    }

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

// CSVPHoldController::HoldRolledBack

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

//

TBool CSVPHoldController::HoldRolledBack() const

    {

    return iContext->HoldRolledBack();

    }

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

// CSVPHoldController::HoldFailed

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

//

TBool CSVPHoldController::HoldFailed()

    {

    return iContext->HoldFailed();    

    }

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

// CSVPHoldController::ResumeFailed

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

//

TBool CSVPHoldController::ResumeFailed()

    {

    return iContext->ResumeFailed();    

    }

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

// CSVPHoldController::ContinueHoldProcessing

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

//

TInt CSVPHoldController::ContinueHoldProcessing( CMceSession& aSession )

    {

    SVPDEBUG1( "CSVPHoldController::ContinueHoldProcessing - IN" );

    iReinviteCrossover = EFalse;

    TInt err = KErrNone;

    iContext->SetSessionObject( &aSession );

    TRAP( err, iContext->ApplyCurrentStateL() );

    iHoldRequestCompleted = ETrue;

    SVPDEBUG2( "CSVPHoldController::ContinueHoldProcessing - Ready, err = %i",

                err );

    return err;

    }

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

// CSVPHoldController::RequestFailed

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

//

TInt CSVPHoldController::RequestFailed( CMceSession& aSession, 

                                        TInt aStatusCode, 

                                        CSVPSessionBase& aBase )

    {

    SVPDEBUG1( "CSVPHoldController::RequestFailed - IN" );

    aBase.StopTimers();

    // If 491 received first time, try it once more. No need to enable /

    // disable audios

    if ( KSVPRequestPendingVal == aStatusCode )

        {

        SVPDEBUG1( "CSVPHoldController::RequestFailed - 491 received" )

        if ( !iReinviteCrossover )

            {

            // First 491 received              

            iReinviteCrossover = ETrue;

            iContext->CrossOver( ETrue );                

            }

        else

            {

            // Second 491; hold/resume request failed

            iReinviteCrossover = EFalse;

            iContext->CrossOver( EFalse );

            }

        }

    TInt err = KErrNone;

    if ( iReinviteCrossover )

        {

        TRAP( err, aBase.StartTimerL( aBase.ReinviteCrossoverTime(),

                                       KSVPReInviteTimerExpired ) );

        if ( err )

            {

            SVPDEBUG2("CSVPHoldController::RequestFailed - Timer, err %i",

                       err )

            }

        }

    iContext->SetCallRequestFailed( ETrue );

    err = IncomingResponse( &aSession, aStatusCode );

    iContext->SetCallRequestFailed( EFalse );

    SVPDEBUG1( "CSVPHoldController::RequestFailed - OUT" );

    return err;

    }

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

// CSVPHoldController::CheckCrossOver

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

//

void CSVPHoldController::CheckCrossOver( CSVPSessionBase& aBase )

    {

    SVPDEBUG1( "CSVPHoldController::CheckCrossOver - IN" );

    if ( iReinviteCrossover )

        {

        SVPDEBUG1("CSVPHoldController::CheckCrossOver - True");

        aBase.StopTimers();

        iReinviteCrossover = EFalse;

        iContext->CrossOver( EFalse );

        TSVPHoldRequestType previousRequest = HoldRequest();

        if ( ESVPLocalHold == previousRequest ||

             ESVPLocalDoubleHold == previousRequest )

            {

            aBase.HoldRequestFailed();

            }

        else if ( ESVPLocalResume == previousRequest ||

                  ESVPLocalDoubleHoldResume == previousRequest )

            {

            aBase.ResumeRequestFailed();

            }

        else

            {

            // This case should never happen

            SVPDEBUG2( "CSVPHoldController::CheckCrossOver - Error,  = %i",

                        previousRequest );

            }

        }

    SVPDEBUG1( "CSVPHoldController::CheckCrossOver - OUT" );

    }

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

// CSVPHoldController::HoldState

// Returns the hold state.

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

//

TSVPSessionHoldState CSVPHoldController::HoldState() const

    {

    SVPDEBUG1( "CSVPHoldController::HoldState" );

    TSVPHoldStateIndex currentState = iContext->CurrentState();

    if ( KSVPHoldConnectedStateIndex == currentState )

        {

        SVPDEBUG1( "CSVPHoldController::HoldState - CONNECTED" );

        return ESVPConnected;

        }

    else if ( KSVPHoldEstablishingStateIndex == currentState )

        {

        SVPDEBUG1( "CSVPHoldController::HoldState - ESTABLISHING" );

        return ESVPEstablishing;

        }

    else

        {

        SVPDEBUG1( "CSVPHoldController::HoldState - ONHOLD" );

        return ESVPOnHold;

        }

    }

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

// CSVPHoldController::HoldRequest

// Returns the hold request type.

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

//

TSVPHoldRequestType CSVPHoldController::HoldRequest() const

    {

    SVPDEBUG1( "CSVPHoldController::HoldRequest" );

    return iContext->HoldRequest();

    }

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

// CSVPHoldController::HoldAllowed

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

//

TBool CSVPHoldController::HoldAllowed()

    {

    TSVPHoldStateIndex currentState = iContext->CurrentState();

    if ( KSVPHoldOutStateIndex == currentState ||

         KSVPHoldEstablishingStateIndex == currentState ||

         KSVPHoldDHStateIndex == currentState )

        {

        SVPDEBUG1( "CSVPHoldController::HoldAllowed - EFalse" );

        return EFalse;

        }

    else

        {

        SVPDEBUG1( "CSVPHoldController::HoldAllowed - ETrue" );

        return ETrue;

        }

    }

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

// CSVPHoldController::ResumeAllowed

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

//   

TBool CSVPHoldController::ResumeAllowed()

    {

    TSVPHoldStateIndex currentState = iContext->CurrentState();

    if ( KSVPHoldInStateIndex == currentState ||

         KSVPHoldEstablishingStateIndex == currentState ||

         KSVPHoldConnectedStateIndex == currentState )

        {

        return EFalse;

        }

    else

        {

        SVPDEBUG1( "CSVPHoldController::ResumeAllowed" );

        return ETrue;

        }    

    }

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

// CSVPHoldController::Muted

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

//

void CSVPHoldController::Muted( TBool aMuted )

    {

    iContext->Muted( aMuted );

    }