/*

* Copyright (c) 2007-2010 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:   This module contains the implementation of CIAUpdateManager

*                class member functions.

*

*/

// INCLUDES

#include <eikenv.h>

#include <iaupdateobserver.h>

#include <iaupdateresult.h>

#include <iaupdateparameters.h>

#include "iaupdatemanager.h"

#include "iaupdateclient.h"

#include "iaupdatedebug.h"

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

// CIAUpdateManager::NewL

// 

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

// 

CIAUpdateManager* CIAUpdateManager::NewL( MIAUpdateObserver& aObserver )

    {

    IAUPDATE_TRACE("[IAUPDATE] CIAUpdateManager::NewL() begin");

    CIAUpdateManager* self = CIAUpdateManager::NewLC( aObserver );

    CleanupStack::Pop( self );

    IAUPDATE_TRACE("[IAUPDATE] CIAUpdateManager::NewL() end");

    return self;

    }

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

// CIAUpdateManager::NewLC

// 

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

//    

CIAUpdateManager* CIAUpdateManager::NewLC( MIAUpdateObserver& aObserver )

    {

    IAUPDATE_TRACE("[IAUPDATE] CIAUpdateManager::NewLC() begin");

    CIAUpdateManager* self = new( ELeave ) CIAUpdateManager( aObserver );

    CleanupStack::PushL( self );

    self->ConstructL();

    IAUPDATE_TRACE("[IAUPDATE] CIAUpdateManager::NewLC() end");

    return self;

    }

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

// CIAUpdateManager::CIAUpdateManager

// 

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

//    

CIAUpdateManager::CIAUpdateManager( MIAUpdateObserver& aObserver )

: CActive( CActive::EPriorityStandard ),

  iObserver( aObserver ),

  iUpdateType( EIAUpdateIdle )

    {

    IAUPDATE_TRACE("[IAUPDATE] CIAUpdateManager::CIAUpdateManager()");

    iEikEnv = CEikonEnv::Static();

    }

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

// CIAUpdateManager::ConstructL()

// 

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

//    

void CIAUpdateManager::ConstructL()

    {

    IAUPDATE_TRACE("[IAUPDATE] CIAUpdateManager::ConstructL() begin");

    CActiveScheduler::Add( this );

    if ( iEikEnv )

        {

    	iEikEnv->AddForegroundObserverL(*this);

        }

    IAUPDATE_TRACE("[IAUPDATE] CIAUpdateManager::ConstructL() end");

    }

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

// CIAUpdateManager::~CIAUpdateManager

// 

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

//

CIAUpdateManager::~CIAUpdateManager()

    {

    IAUPDATE_TRACE("[IAUPDATE] CIAUpdateManager::~CIAUpdateManager() begin");

    delete iUpdateParameters;

    iUpdateParameters = NULL;

    // If an operation is still active, 

    // then DoCancel will cancel ongoing request

    Cancel();

    UpdateClient().Close();

    if ( iEikEnv )

        {

    	iEikEnv->RemoveForegroundObserver(*this);

        }

    IAUPDATE_TRACE("[IAUPDATE] CIAUpdateManager::~CIAUpdateManager() end");

    }

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

// CIAUpdateManager::CheckUpdates

// 

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

//

void CIAUpdateManager::CheckUpdates( const CIAUpdateParameters& aUpdateParameters )

    {

    IAUPDATE_TRACE("[IAUPDATE] CIAUpdateManager::CheckUpdates() begin");

    if ( BusyCheck() )

        {

        // An operation is already going on.

        // Do not continue with this new operation.

        // Only, inform the observer with the error code.

        // Notice that the callback is called synchronously here 

        // because there is no better way to do it. Asynchronous way 

        // would be really cumbersome because this object is already active. 

        // This error is users fault. Therefore we, could also panic here.

        Observer().CheckUpdatesComplete( KErrServerBusy, 0 );

        return;

        }

    // Reset result values because we are starting a new operation.

    ResetResults();

    //

    delete iUpdateParameters;

    iUpdateParameters = NULL;

    TInt error = KErrNone;

    TRAP(error,CopyUpdateParamsL( aUpdateParameters ) );

    if ( error == KErrNone )

        {

        // Set the update type. 

        // So, we know later in RunL what operation was requested.

        SetUpdateType( EIAUpdateStartServer );   

        error = UpdateClient().OpenToBackroundAsync( iStatus);

        }

    if ( error == KErrNone )

        {

        // Set this object active.

        // Because everything went ok, 

        // the operation will be handled asynchronously

        // and the service provider will inform us when the operation

        // is finished.

        SetActive();        

        }

    else

        {

        // Because we are going to activate this active object,

        // set the status pending.

        iStatus = KRequestPending;

        // An error occurred above. 

        // Therefore, the operation did not proceed any further.

        // Set this object active for asynchronous error handling.

        SetActive();

        // Now, that everything is ready, just inform the active scheduler

        // that operation is finished. Pass the error code for the observer.

        TRequestStatus* status( &iStatus );

        User::RequestComplete( status, error );                

        }

    IAUPDATE_TRACE("[IAUPDATE] CIAUpdateManager::CheckUpdates() end");

    }

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

// CIAUpdateManager::ShowUpdates

// 

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

// 

void CIAUpdateManager::ShowUpdates( const CIAUpdateParameters& aUpdateParameters )

    {

    IAUPDATE_TRACE("[IAUPDATE] CIAUpdateManager::ShowUpdates() begin");

    if ( BusyCheck() )

         {

         // An update operation is already going on.

         // Do not continue with this new operation.

         // Only, inform the observer with the error code.

         // Notice that the callback is called synchronously here 

         // because there is no better way to do it. Asynchronous way 

         // would be really cumbersome because this object is already active. 

         // This error is users fault. Therefore we, could also panic here.

         Observer().UpdateComplete( KErrServerBusy, NULL );

         return;

         }

    // Reset result values because we are starting a new operation.

    ResetResults();

    // Set the update type. 

    // So, we know later in RunL what operation was requested.

    SetUpdateType( EIAUpdateUpdate );

    TInt error( UpdateClient().Open() );

    if ( error == KErrNone )

        {    

        error =

            UpdateClient().ShowUpdates( aUpdateParameters, 

                                        iSuccessCount,

                                        iFailCount,

                                        iCancelCount,  

                                        iStatus );

        }        

    if ( error == KErrNone )

        {

        // Set this object active.

        // Because everything went ok, 

        // the operation will be handled asynchronously

        // and the service provider will inform us when the operation

        // is finished.

        SetActive();        

        }

    else

        {

        // Because we are going to activate this active object,

        // set the status pending.

        iStatus = KRequestPending;

        // An error occurred above. 

        // Therefore, the operation did not proceed any further.

        // Set this object active for asynchronous error handling.

        SetActive();

        // Now, that everything is ready, just inform the active scheduler

        // that operation is finished. Pass the error code for the observer.

        TRequestStatus* status( &iStatus );

        User::RequestComplete( status, error );                

        }

    IAUPDATE_TRACE("[IAUPDATE] CIAUpdateManager::ShowUpdates() end");

    }

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

// CIAUpdateManager::Update

// 

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

// 

void CIAUpdateManager::Update( const CIAUpdateParameters& /*aUpdateParameters*/ )

    {

    IAUPDATE_TRACE("[IAUPDATE] CIAUpdateManager::Update() begin");

    Observer().UpdateComplete( KErrNotSupported, NULL );

    IAUPDATE_TRACE("[IAUPDATE] CIAUpdateManager::Update() begin");

    }

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

// CIAUpdateManager::UpdateQuery

// 

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

//   

void CIAUpdateManager::UpdateQuery()

    {

    IAUPDATE_TRACE("[IAUPDATE] CIAUpdateManager::UpdateQuery() begin");

    if ( BusyCheck() )

        {

        // An update operation is already going on.

        // Do not continue with this new operation.

        // Only, inform the observer with the error code.

        // Notice that the callback is called synchronously here 

        // because there is no better way to do it. Asynchronous way 

        // would be really cumbersome because this object is already active. 

        // This error is users fault. Therefore we, could also panic here.

        Observer().UpdateQueryComplete( KErrServerBusy, EFalse );

        return;

    }

    // Reset result values because we are starting a new operation.

    ResetResults();

    // Set the update type. 

    // So, we know later in RunL what operation was requested.

    SetUpdateType( EIAUpdateQuery );

    TInt error( UpdateClient().Open() );

    if ( error == KErrNone )

        {    

        error =

            UpdateClient().UpdateQuery( iUpdateNow, iStatus );

        }        

    if ( error == KErrNone )

        {

        // Set this object active.

        // Because everything went ok, 

        // the operation will be handled asynchronously

        // and the service provider will inform us when the operation

        // is finished.

        SetActive();        

        }

    else

        {

        // Because we are going to activate this active object,

        // set the status pending.

        iStatus = KRequestPending;

        // An error occurred above. 

        // Therefore, the operation did not proceed any further.

        // Set this object active for asynchronous error handling.

        SetActive();

        // Now, that everything is ready, just inform the active scheduler

        // that operation is finished. Pass the error code for the observer.

        TRequestStatus* status( &iStatus );

        User::RequestComplete( status, error );                

        }

    IAUPDATE_TRACE("[IAUPDATE] CIAUpdateManager::UpdateQuery() end");

    }

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

// CIAUpdateManager::DoCancel

// 

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

//

void CIAUpdateManager::DoCancel()

    {

    IAUPDATE_TRACE("[IAUPDATE] CIAUpdateManager::DoCancel() begin");

    UpdateClient().CancelAsyncRequest();

    // Reset result values because we are starting a new operation.

    ResetResults();

    IAUPDATE_TRACE("[IAUPDATE] CIAUpdateManager::DoCancel() end");

    }

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

// CIAUpdateManager::RunL

// 

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

//

void CIAUpdateManager::RunL()

    {

    IAUPDATE_TRACE("[IAUPDATE] CIAUpdateManager::RunL() begin");

    // Update operation error code

    TInt errorCode( iStatus.Int() );

    IAUPDATE_TRACE_1("[IAUPDATE] error code: %d", errorCode );

    if ( errorCode == KErrServerTerminated )

        {

    	// Handle is released if server is terminated

        UpdateClient().Close();

        }

    // Variables for operation and result information.

    TIAUpdateType updateType( UpdateType() );

    IAUPDATE_TRACE_1("[IAUPDATE] update type: %d", updateType );

    CIAUpdateResult* updateResult( NULL );

    if ( updateType == EIAUpdateUpdate )

        {

        // Update result object is required.

        // Notice that the ownership is transferred later.

        // So, this function does not need to delete updateResult object.

        TRAPD( trapError, updateResult = CIAUpdateResult::NewL() );

        if ( updateResult )

            {

            updateResult->SetSuccessCount( iSuccessCount );

            updateResult->SetFailCount( iFailCount );

            updateResult->SetCancelCount( iCancelCount );

            }

        else

            {

            // Something went wrong when creating update result object.

            // Update the error code accordingly.

            errorCode = trapError;

            }

        // Let's assume that connection is not needed anymore

        UpdateClient().Close();

        }

    // Inform that no operation is going on anymore.

    // This is required for busy check.

    SetUpdateType( EIAUpdateIdle );    

    // Use the update type of the ongoing operation to check what callback

    // function to call.

    switch ( updateType )

        {

        case EIAUpdateStartServer:

                {

                CheckUpdatesContinue();            

                }

            else

                {

                UpdateClient().Close();

                Observer().CheckUpdatesComplete( errorCode, 0);

                }

            break;

        case EIAUpdateCheck:

            if ( iSuccessCount == 0 )

                {

            	// Let's assume that connection is not needed anymore

                UpdateClient().Close();

                }

            IAUPDATE_TRACE_1("[IAUPDATE] success count: %d", iSuccessCount );

            Observer().CheckUpdatesComplete( errorCode, iSuccessCount );

            break;

        case EIAUpdateUpdate:

            // Notice that ownership of result object is transferred here.

            IAUPDATE_TRACE_3("[IAUPDATE] success count: %d failed count: %d cancelled count: %d", iSuccessCount, iFailCount, iCancelCount );

            Observer().UpdateComplete( errorCode, updateResult );

            break;

        case EIAUpdateQuery:

            if ( !iUpdateNow )

                {

            	// Let's assume that connection is not needed anymore

                UpdateClient().Close();

                } 

            IAUPDATE_TRACE_1("[IAUPDATE] update now: %d", iUpdateNow );

            Observer().UpdateQueryComplete( errorCode, iUpdateNow );

            break;

        default:

            // Should not ever come here.

            break;

        }

    // Do not anything else than return after callback function is called because 

    // this instance can be deleted by a client in a callback function

    // 

    IAUPDATE_TRACE("[IAUPDATE] CIAUpdateManager::RunL() end");

    }

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

// CIAUpdateManager::ResetResults

// 

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

//

void CIAUpdateManager::ResetResults()

    {

    IAUPDATE_TRACE("[IAUPDATE] CIAUpdateManager::ResetResults() begin");

    // Set the member variables to their default values.

    iSuccessCount = 0;

    iFailCount = 0;

    iCancelCount = 0;

    iUpdateNow = EFalse;

    IAUPDATE_TRACE("[IAUPDATE] CIAUpdateManager::ResetResults() end");

    }

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

// CIAUpdateManager::BusyCheck

// 

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

//

TBool CIAUpdateManager::BusyCheck() const

    {

    IAUPDATE_TRACE("[IAUPDATE] CIAUpdateManager::BusyCheck()");

    if ( UpdateType() == EIAUpdateIdle )

        {

        return EFalse;

        }

    else

        {

        return ETrue; 

        }

    }

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

// CIAUpdateManager::UpdateClient 

// 

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

//

RIAUpdateClient& CIAUpdateManager::UpdateClient()

    {

    IAUPDATE_TRACE("[IAUPDATE] CIAUpdateManager::UpdateClient()");

    return iUpdateClient;

    }

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

// CIAUpdateManager::Observer

// 

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

//

MIAUpdateObserver& CIAUpdateManager::Observer() const

    {

    IAUPDATE_TRACE("[IAUPDATE] CIAUpdateManager::Observer()");

    return iObserver;

    }