/*

* Copyright (c) 2010 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: Listen VPN toggle key changes in central repository.

*

*/

#include <centralrepository.h>

#include <mpmvpntoggleapi.h>

#include "mpmlogger.h"

#include "mpmvpntogglewatcher.h"

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

// Default constructor

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

//

CMpmVpnToggleWatcher::CMpmVpnToggleWatcher( MMpmVpnToggleWatcherNotify& aNotify )

    : CActive( EPriorityStandard ),

      iNotify( aNotify )

    {

    CActiveScheduler::Add( this );    

    }

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

// Creates central repositor object

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

//

void CMpmVpnToggleWatcher::ConstructL()

    {

    TRAPD(err, iRepository = CRepository::NewL( KMpmVpnToggleCenRepUid ));

    if ( err == KErrNone )

        {

        StartL();

        }

    }

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

// Creates new object

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

//

CMpmVpnToggleWatcher* CMpmVpnToggleWatcher::NewL( MMpmVpnToggleWatcherNotify& aNotify )

    {

    CMpmVpnToggleWatcher* self = new( ELeave ) CMpmVpnToggleWatcher(aNotify);

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

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

// Destructor

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

//

CMpmVpnToggleWatcher::~CMpmVpnToggleWatcher()

    {    

    Cancel();

    delete iRepository;

    }

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

// Order notification from changes

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

//

void CMpmVpnToggleWatcher::StartL()

    {

    MPMLOGSTRING( "CMpmVpnToggleWatcher::StartL" )

    // Get the initial Connect screen ID from repository.

    User::LeaveIfError( GetVpnToggleValues() );

    // Request for notifications.

    User::LeaveIfError( RequestNotifications() );

    }

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

// Request notifications.

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

//

TInt CMpmVpnToggleWatcher::RequestNotifications()

    {

    MPMLOGSTRING( "CMpmVpnToggleWatcher::RequestNotifications" )

    TInt err = iRepository->NotifyRequest( KMpmVpnTogglePreferVpn, iStatus );

    if ( err == KErrNone )

        {

        SetActive();

        }

    else

        {

        MPMLOGSTRING2( "CMpmVpnToggleWatcher::RequestNotifications, ERROR: %d", err )

        }

    return err;

    }

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

// Get VPN toggle values.

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

//

TInt CMpmVpnToggleWatcher::GetVpnToggleValues()

    {

    MPMLOGSTRING( "CMpmVpnToggleWatcher::GetVpnToggleValues" )

    // Get values from central repository    

    TInt err = iRepository->Get( KMpmVpnTogglePreferVpn, iVpnConnectionPreferred );

    if ( err != KErrNone )

        {

        MPMLOGSTRING2( "CMpmVpnToggleWatcher::GetVpnToggleValues, preferred value, ERROR: %d", err )    

        return err;

        }    

    TInt value(0);    

    err = iRepository->Get( KMpmVpnToggleIapId, value );

    if ( err != KErrNone )

        {

        MPMLOGSTRING2( "CMpmVpnToggleWatcher::GetVpnToggleValues, IAP Id value, ERROR: %d", err )

        return err;

        }    

    iVpnIapId = value;   

    err = iRepository->Get( KMpmVpnToggleSnapId, value );

    if ( err != KErrNone )

        {

        MPMLOGSTRING2( "CMpmVpnToggleWatcher::GetVpnToggleValues, SNAP Id value, ERROR: %d", err )

        return err;

        }

    iSnapId = value;        

    return KErrNone;

    }

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

// Return VPN toggle value.

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

//

TBool CMpmVpnToggleWatcher::IsVpnConnectionPreferred() const

    {

    return iVpnConnectionPreferred;

    }

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

// Return VPN IAP Id.

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

//

TUint32 CMpmVpnToggleWatcher::VpnIapId() const

    {

    return iVpnIapId;

    }

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

// Return SNAP Id.

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

//

TUint32 CMpmVpnToggleWatcher::SnapId() const

    {

    return iSnapId;

    }

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

// Resets VPN toggle values.

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

//

void CMpmVpnToggleWatcher::ResetVpnToggleValues()

    {

    // Cancel listening VPN toggle value change

    Cancel();

    // Reset values.

    iVpnConnectionPreferred = EFalse;

    iVpnIapId = 0;

    iSnapId = 0;

    TInt err = iRepository->Set( KMpmVpnTogglePreferVpn, 0 );

    if ( err == KErrNone ) 

        {

        err = iRepository->Set( KMpmVpnToggleIapId, 0 );

        }

    if ( err == KErrNone )

        {

        err = iRepository->Set( KMpmVpnToggleSnapId, 0 );

        }

    MPMLOGSTRING2( "CMpmVpnToggleWatcher::ResetVpnToggleValues, ERROR: %d", err )

    // Restart listening VPN toggle value change

    RequestNotifications();

    }

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

// From class CActive.

// When there is a change in VPN toggle key value, event is received in here

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

//

void CMpmVpnToggleWatcher::RunL()

    {            

    if ( iStatus.Int() < KErrNone )

        {

        MPMLOGSTRING2("CMpmVpnToggleWatcher::RunL, status: 0x%08X", iStatus.Int())

        iErrorCounter++;

        if ( iErrorCounter > KMpmVpnToggleWatcherCenRepErrorThreshold )

            {

            MPMLOGSTRING2("Over %d consecutive errors, stopping notifications permanently.",

                    KMpmVpnToggleWatcherCenRepErrorThreshold)

            return;

            }

        // Else: Error occured but counter not expired. Proceed.

        RequestNotifications();

        }

    else

        {

        // Notification is received ok => Reset the counter.

        iErrorCounter = 0;

        RequestNotifications();

        // Get values from central repository

        GetVpnToggleValues();

        // Notify values.

        TRAP_IGNORE( iNotify.SetVpnToggleValuesL( iVpnConnectionPreferred,

                                                  iVpnIapId,

                                                  iSnapId ) );        

        }    

    }

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

// From class CActive.

// Cancel outstanding request

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

//

void CMpmVpnToggleWatcher::DoCancel()

    {

    iRepository->NotifyCancel( KMpmVpnTogglePreferVpn );

    }