/*

* Copyright (c) 2004 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: 

*

*/

#include "uninstaller.h"

#include "versionRevisor.h"

#include "SWInstDebug.h"

#include "sisregistrysession.h"

#include "siscontents.h"

#include "sisparser.h"

#include "filesisdataprovider.h"

#include "dessisdataprovider.h"

#include "siscontroller.h"

#include "sisinfo.h"

#include "sisuid.h"

#include "sisregistryentry.h"

#include "DialogWrapper.h"

using namespace Swi;

const static TInt KWaitTime = 3000000; // 2 secs

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

// Two phased construction

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

//   

CSisPkgUninstaller* CSisPkgUninstaller::NewL( 

    CProgramStatus& aMainStatus, 

    CVersionRevisor& aRevisor )

    {

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

    CleanupStack::PushL(self);

    self->ConstructL( aMainStatus, aRevisor );

    CleanupStack::Pop(self);

    return self;

    }

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

// c++ constructor

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

//   

CSisPkgUninstaller::CSisPkgUninstaller() : CActive( CActive::EPriorityStandard )      

    {  

    CActiveScheduler::Add( this );          

    }

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

// c++ destructor

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

//

CSisPkgUninstaller::~CSisPkgUninstaller()

    { 

    FLOG( _L("[SISUninstaller] ~CSisPkgUninstaller start"));

    if ( EStateUninstalling == iProgramStatus->GetProgramStatus() )

        {   

        FLOG( _L("[SISUninstaller] Set status to idle"));

        iProgramStatus->SetProgramStatusToIdle();

        } 

    FLOG( _L("[SISUninstaller] ~CSisPkgUninstaller: Cancel()"));

    // Cancels the wait for completion of an outstanding request.

    Cancel();

    FLOG( _L("[SISUninstaller] ~CSisPkgUninstaller: Deque()"));

    // Removes the active object from the active scheduler's list.

    Deque();

    FLOG( _L("[SISUninstaller] ~CSisPkgUninstaller: iTimer.Close()"));

    iTimer.Close();    

    iPkgUidArray.Close();  

    delete iSilentUninstaller; 

    FLOG( _L("[SISUninstaller] ~CSisPkgUninstaller: delete iMime"));

    delete iMime;  

    FLOG( _L("[SISUninstaller] ~CSisPkgUninstaller: delete iDialogs"));

    delete iDialogs;      

    FLOG( _L("[SISUninstaller] ~CSisPkgUninstaller: iApaSession.Close()"));

    iApaSession.Close();            

    FLOG( _L("[SISUninstaller] ~CSisPkgUninstaller: iFs.Close();"));

    iFs.Close();     

    FLOG( _L("[SISUninstaller] ~CSisPkgUninstaller end"));

    }

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

// 2nd phase construction

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

//

void CSisPkgUninstaller::ConstructL( 

    CProgramStatus& aMainStatus, 

    CVersionRevisor& aRevisor )

    {       

    iProgramStatus = &aMainStatus;    

    iRevisor = &aRevisor;

    User::LeaveIfError( iTimer.CreateLocal() );    

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

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

    iFs.ShareProtected();

    iUidArrayIndex = 0;

    iSilentUninstaller = NULL;

    // Note this will create new instance for dialog class and

    // also new dialog watcher AO for uninstaller.

    // Since uninstaller is used rarely this is not big issue.

    // In future dialog class could be added to CProgramStatus class 

    // member from where both installer and uninstaller could us it.    

    iDialogs = CDialogWrapper::NewL( iFs );      

    }

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

// This function adds package uid to uninstall array.

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

//

void CSisPkgUninstaller::AddUidToListL( const TUid& aUID )

    {    

    iPkgUidArray.AppendL( aUID );    

    }

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

// This function starts uninstall process. Leaves if nothing to do.

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

//

void CSisPkgUninstaller::StartUninstallL()

    {    

    FLOG( _L("[SISUninstaller] StartUninstallL"));

    if( iPkgUidArray.Count() == 0 )

         {

         FLOG( _L("[SISUninstaller] No UIDs leave uninstaller"));

         User::Leave( KErrAbort );         

         }

    // If daemon installer is in idle, start uninstall and

    // set process status as uninstalling.

    if ( EStateIdle == iProgramStatus->GetProgramStatus() )

        {

        FLOG( _L("[SISUninstaller] StartUninstallL: Set EStateUninstalling") );

        iProgramStatus->SetProgramStatus( EStateUninstalling );

        }               

    if ( iSilentUninstaller == NULL )

        {

        FLOG( _L("[SISUninstaller] Create SilentUninstaller"));

        iSilentUninstaller = CSilentUninstaller::NewL( iFs );

        }

    if ( iState == EUninstallerStateIdle )

        {       

        CompleteSelf();

        }                 

    }

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

// Complete the request manually.

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

//

void CSisPkgUninstaller::CompleteSelf()

    {  

    FLOG( _L("[SISUninstaller] CompleteSelf"));

    if ( !IsActive() )

        {        

        TRequestStatus* status = &iStatus;

        User::RequestComplete( status, KErrNone );

        SetActive();

        }      

    }

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

// Cancel the active request.

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

//

void CSisPkgUninstaller::DoCancel()

    { 

    FLOG( _L("[SISUninstaller] DoCancel") ); 

    iTimer.Close();      

    if ( iState == EUninstallerStateUninstalling )

        {                    

        iSilentUninstaller->Cancel();

        }           

    }

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

// Handles the active object's request completion. Process the uninstall

// tasks and waits install process if needed.

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

//

void CSisPkgUninstaller::RunL()

    {

    FLOG_1( _L("[SISUninstaller] RunL: ProgramStatus = %d"),

            iProgramStatus->GetProgramStatus() );    

    // If daemon installer is running let's wait some time and try again.

    if ( EStateInstalling == iProgramStatus->GetProgramStatus() )

        {

        FLOG( _L("[SISUninstaller] RunL: Wait daemon installer ! ! !") ); 

        TTimeIntervalMicroSeconds32 time( KWaitTime ); 

        iTimer.After( iStatus, time );

        SetActive();        

        }    

    // Ok, run uninstaller.

    else

        {

        FLOG( _L("[SISUninstaller] RunL: Start uninstalling process") );        

        iProgramStatus->SetProgramStatus( EStateUninstalling );        

        FLOG_1( _L("Daemon Uninstaller: RunL: SWI iStatus = %d"), 

                iStatus.Int()); 

        switch ( iState )

            {             

            case EUninstallerStateUninstalling:

                {

                FLOG( _L("[SISUninstaller] RunL: EUninstallerStateUninstal."));                                        

                // We are not checking SWI error status here because 

                // there is not need for that. If uninstall fails because 

                // some error, we can not fix it. In case of error we will 

                // start next uninstall.

                // Ok, server busy, we have to wait.

                if ( iStatus.Int() == SwiUI::KSWInstErrBusy )

                    {

                    FLOG(_L("[SISUninstaller] RunL: iStatus: KSWInstErrBusy"));                                       

                    TTimeIntervalMicroSeconds32 time( KWaitTime ); 

                    iTimer.After( iStatus, time );

                    iState = EUninstallerStateBusy;

                    SetActive(); 

                    break;

                    }                                                                                                      

                // Check if we have more to uninstall

                else if ( iUidArrayIndex < iPkgUidArray.Count() )

                    {

                    FLOG(_L("[SISUninstaller] RunL: Complete self and cont."));

                    // Run again to kick of the next uninstallation.

                    iState = EUninstallerStateIdle;                 

                    CompleteSelf();

                    } 

                // Ok all is done.

                else

                    {                    

                    FLOG( _L("[SISUninstaller] RunL: Completed") );                     

                    UninstallationCompleted( KErrNone );

                    ExitUninstaller();

                    }

                }

                break;

            case EUninstallerStateIdle:

                 {  

                 FLOG( _L("[SISUninstaller] RunL: EDSisInstallerStateIdle") );   

                 // Check if there is pkgs to be uninstalled.

                 if ( iUidArrayIndex < iPkgUidArray.Count() )

                     { 

                     // Display installing note for user.

                     iDialogs->ShowWaitingNoteForUninstallerL(); 

                     FLOG_1( _L("[SISUninstaller] Run uninstall index = %d"), 

                             iUidArrayIndex ); 

                     // Get next UID. 

                     iUID = iPkgUidArray[ iUidArrayIndex ];

                     // Increas pkg counter.

                     iUidArrayIndex++;                                   

                     // Start uninstall process

                     iSilentUninstaller->UninstallL( iUID, iStatus, *iMime );

                     //iDialogs->ShowWaitingNoteL(); 

                     iState = EUninstallerStateUninstalling;       

                     SetActive();                                                                                                                                 

                     }

                 else

                     {

                     // No more pkgs to uninstall. Let's quit.                     

                     FLOG( _L("[SISUninstaller] RunL: Completed") );

                     UninstallationCompleted( KErrNone );

                     ExitUninstaller();

                     }                        

                 }                        

                 break;

            case EUninstallerStateBusy:

                {

                FLOG( _L("[SISUninstaller] RunL: EUninstallerStateBusy") );

                FLOG_1( _L("[SISUninstaller] Run uninstall again index = %d"),

                        iUidArrayIndex-1 );

                // Start uninstall process                                   

                iSilentUninstaller->UninstallL( iUID, iStatus, *iMime );                 

                iState = EUninstallerStateUninstalling;       

                SetActive();                                                              

                }

                break;

            default:

                 FLOG(_L("[SISUninstaller] RunL: KErrNotSupported EXIT!!!"));

                 // This state is not supported, let's exit.

                 DoCancel();

                 UninstallationCompleted( KErrNotSupported );

                 ExitUninstaller();                 

                 break;                     

            } //switch case

        } //if-else      

    }

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

// This function is called when RunL leaves. 

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

//

TInt CSisPkgUninstaller::RunError( TInt aError )

    { 

    FLOG_1( _L("[SISUninstaller] RunError: error = %d"), aError );

    UninstallationCompleted( aError );

    return aError;    

    }		

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

// This function is called after uninstall tasks are done.

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

//

void CSisPkgUninstaller::UninstallationCompleted( TInt /*aResult*/ )

    {

    FLOG( _L("[SISUninstaller] UninstallationCompleted") );

    if ( EStateUninstalling == iProgramStatus->GetProgramStatus() )

         {   

         FLOG( _L("[SISUninstaller] Set status to idle"));

         iProgramStatus->SetProgramStatusToIdle();

         }     

    iUidArrayIndex = 0;    

    iState = EUninstallerStateIdle; 

    // Cancel waiting note.

    }  

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

// This is for self exit.

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

//

void CSisPkgUninstaller::ExitUninstaller()

    {

    FLOG( _L("[SISUninstaller] ExitUninstaller") );            

    // Uninstall is completed and we do not need uninstaller anymore.

    // Call revisor's destructor.

    iRevisor->Exit();

    }

//EOF