// Copyright (c) 2007-2009 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:

//

/**

 @file

 @internalComponent

*/

#include "cmtpoperator.h"

__FLOG_STMT( _LIT8( KComponent, "mtpoperator" ); )

CMTPOperator* CMTPOperator::NewL( MMTPOperatorNotifier& aNotifier )

    {

    CMTPOperator* self = new( ELeave ) CMTPOperator( aNotifier );

    self->ConstructL();

    return self;

    }

CMTPOperator::~CMTPOperator()

    {

    Cancel();

    iPendingOperations.Reset();

    iPendingOperations.Close();

    iMTPClient.Close();

    iProperty.Close();

    delete iTimer;

    __FLOG( _L8("+/-Dtor") );

    __FLOG_CLOSE;

    }

void CMTPOperator::StartTransport( TUid aTransport )

    {

    __FLOG_1( _L8("+/-StartTransport( 0x%08X )"), aTransport.iUid );

    TInt err = AppendOperation( EStartTransport, aTransport );

    if ( KErrNone != err )

        {

        iNotifier.HandleStartTrasnportCompleteL( err );

        }

    }

void CMTPOperator::StopTransport( TUid aTransport )

    {

    __FLOG_1( _L8("+/-StopTransport( 0x%08X )"), aTransport.iUid );

    TInt err = AppendOperation( EStopTransport, aTransport );

    if ( KErrNone != err )

        {

        iNotifier.HandleStartTrasnportCompleteL( err );

        }

    }

void CMTPOperator::StartTimer(TInt aSecond)

    {

    __FLOG(_L8("StartTimer in cmtpoperator!"));

    iTimer->Start(aSecond);    

    }

void CMTPOperator::DoCancel()

    {

    __FLOG( _L8("+/-DoCancel") );

    iProperty.Cancel();

    iConSubscribed = EFalse;

    }

void CMTPOperator::RunL()

    {

    __FLOG( _L8("+RunL") );

    iConSubscribed = EFalse;

    TInt count = iPendingOperations.Count();

    TInt connState = KInitialValue;

    if ( count > 0 )

        {

        TOperation& operation = iPendingOperations[0];

        TRAP_IGNORE( HandleOperationL( operation ) );

        iPendingOperations.Remove( 0 );

        }

    else

        {

        //this will go on to get the updated connection status.

        SubscribeConnState();

        TInt error = iProperty.Get(KMTPPublishConnStateCat, EMTPConnStateKey, connState);

        __FLOG_2(_L8("Before, the iConnState is %d and connState is %d"), iConnState, connState);

        if ( KErrNotFound == error )

            {

            iConnState = KInitialValue;

            __FLOG( _L8("The key is deleted and mtp server shut down!") );

            }

        else

            {

            if (iTimer->IsActive() && !iTimer->GetStopTransportStatus())

                {

                __FLOG( _L8("Timer is cancelled!") );

                iTimer->Cancel();

                }

            //if the disconnect is not set, set the disconnect

            //else if the connState is disconnect, launch the timer to restart the server to unload dps.

            if ( KInitialValue == iConnState )

                {

                iConnState = connState;

                __FLOG( _L8("the first time to launch mtp") );

                }

            else

                {

                if (EDisconnectedFromHost == connState)

                    {

                    iConnState = connState;

                    if (!iTimer->IsActive())

                        {

                        iTimer->Start(KStopMTPSeconds);

                        }

                    __FLOG( _L8("Timer is launched.") );

                    }

                else

                    {

                    iConnState = connState;

                    }

                }

            }

        __FLOG_2(_L8("After, the iConnState is %d and connState is %d"), iConnState, connState);

        }

    __FLOG( _L8("-RunL") );

    }

CMTPOperator::CMTPOperator( MMTPOperatorNotifier& aNotifier ):

    CActive( EPriorityStandard ),

    iNotifier( aNotifier )

    {

    __FLOG_OPEN( KMTPSubsystem, KComponent );

    __FLOG( _L8("+/-Ctor") );

    }

void CMTPOperator::ConstructL()

    {

    __FLOG( _L8("+ConstructL") );

    CActiveScheduler::Add( this );

    //if the server is running, the first disconnction shows the conection is down!

    if(KErrNone == iMTPClient.IsProcessRunning())

        {

        iConnState = EDisconnectedFromHost;

        }

    else

        {

        iConnState = KInitialValue;

        }

    __FLOG_1( _L8("The connstate is set to %d"), iConnState );

    User::LeaveIfError( iMTPClient.Connect() );

    User::LeaveIfError(iProperty.Attach(KMTPPublishConnStateCat, EMTPConnStateKey));

    iTimer = CMTPControllerTimer::NewL(iMTPClient, *this);

    iConSubscribed = EFalse;

    __FLOG( _L8("-ConstructL") );

    }

TInt CMTPOperator::AppendOperation( TOperationType aType, TUid aTransport )

    {

    TOperation operation = { aType, aTransport };

    TInt err = iPendingOperations.Append( operation );

    __FLOG_1( _L8("+AppendOperation returns %d"), err );

    if ( ( KErrNone == err ) && !IsActive() )

        {

        Schedule( KErrNone );

        }

    else

        {

        if (iConSubscribed)

            {

            Cancel();

            if (KErrNone == err)

                {

                Schedule( KErrNone );

                }

            }

        }

    __FLOG( _L8("-AppendOperation") );

    return err;

    }

void CMTPOperator::Schedule( TInt aError )

    {

    __FLOG_1( _L8("+/-Schedule( %d )"), aError );

    if(iTimer->IsActive())

        {

        iTimer->Cancel();

        }

    TRequestStatus* status = &iStatus;

    User::RequestComplete( status, aError );

    SetActive();

    }

void CMTPOperator::HandleOperationL( const TOperation& aOperation )

    {

    __FLOG_2( _L8("+HandleOperationL( 0x%08X, 0x%08X )"), aOperation.iTransport.iUid, aOperation.iType );

    TInt err = KErrNone;

    switch ( aOperation.iType )

        {

        case EStartTransport:

            err = iMTPClient.StartTransport( aOperation.iTransport );

            iNotifier.HandleStartTrasnportCompleteL( err );

            SubscribeConnState();

            break;

        default:

            __ASSERT_DEBUG( ( EStopTransport == aOperation.iType ), User::Invariant() );

            if(!iTimer->GetStopTransportStatus())

                {

                err = iMTPClient.StopTransport( aOperation.iTransport );

                }

            iNotifier.HandleStopTrasnportCompleteL( err );

            break;

        }

    __FLOG( _L8("-HandleOperationL") );

    }

void CMTPOperator::SubscribeConnState()

    {

    if(!IsActive())

        {

        __FLOG( _L8("Subscribe connection state changed)") );

        iProperty.Subscribe(iStatus);

        iConSubscribed = ETrue;

        SetActive();

        }

    }