/*

* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* 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:

*

*

*/

//  INCLUDE FILES

#include <apgcli.h>

#include <apacmdln.h>

#include <eikenv.h>

#include <bautils.h>

#include <utf.h>

#include <e32property.h>

#include "cbsinstallhandler.h"

#include "bsimportconstants.h"

#include "cbsstoragemanager.h"

// CONSTANTS

// branding installer application

_LIT( KInstallerApp,            "bsinstall.exe" );

// wildcard for finding installed brand files

_LIT( KBrandWild,               "*" );

// Line feed separates uninstalled brands from each other

_LIT( KLineFeed,                "\n" );

// Pub&Sub Key for uninstalled brands

const TUint KUninstallKey       = 0x01;

// METHODS

// Two-phased constructor.

CBSInstallHandler* CBSInstallHandler::NewL( )

    {

    TRACE( T_LIT( "CBSInstallHandler::NewL begin") );

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

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    TRACE( T_LIT( "CBSInstallHandler::NewL end") );

    return self;

    }

// Symbian OS default constructor can leave.

void CBSInstallHandler::ConstructL()

    {

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

    CActiveScheduler::Add( this );

    }

// Destructor

CBSInstallHandler::~CBSInstallHandler()

    {

    Cancel();

    iFs.Close();

    }

// C++ default constructor can NOT contain any code, that

// might leave.

//

CBSInstallHandler::CBSInstallHandler() :

    CActive( EPriorityIdle )

	{

	}

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

// CBSInstallHandler::InstallNewFilesL()

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

//

void CBSInstallHandler::InstallNewFilesL()

    {

	TRACE( T_LIT( "CBSInstallHandler::InstallNewFilesL begin") );

    TInt needInstaller = 0;

    TRAP_IGNORE( needInstaller += CheckForDiscardedBrandsL( KBSDataStore ) );

    // uninstall removed brands

    needInstaller += 

        SyncFilesL( KInstallPath, KInstallObservePath, EInstallDeleteFromSrc );

    // install new brands

    needInstaller += 

        SyncFilesL( KInstallObservePath, KInstallPath, EInstallCopyNewToDest );

    if( needInstaller )

        {

        // something new was installed

        LaunchInstallerAppL();

        }

	TRACE( T_LIT( "CBSInstallHandler::InstallNewFilesL end") );

    }

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

// CBSInstallHandler::StartObservingL()

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

//

void CBSInstallHandler::StartObservingL()

	{

	TRACE( T_LIT( "CBSInstallHandler::StartObservingL begin") );

	if( IsActive() )

	    {

	    __ASSERT_DEBUG( EFalse, User::Leave( KErrAlreadyExists ) );

	    return;

	    }

	// observe path: (drive:)[private](/import/install)

	TPath path( KNullDesC );

	GetPrivateFolder( path, KInstallObservePath );

    iFs.NotifyChange( ENotifyEntry, iStatus, path );

    SetActive();

	TRACE( T_LIT( "CBSInstallHandler::StartObservingL end") );

	}

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

// CBSInstallHandler::StopObserving()

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

//

void CBSInstallHandler::StopObserving()

	{

	TRACE( T_LIT( "CBSInstallHandler::StopObserving begin") );

    Cancel();

	TRACE( T_LIT( "CBSInstallHandler::StopObserving end") );

	}

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

// CBSInstallHandler::DoCancel()

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

//

void CBSInstallHandler::DoCancel()

    {

    iFs.NotifyChangeCancel();

    }

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

// CBSInstallHandler::RunL()

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

//

void CBSInstallHandler::RunL()

    {

	TRACE( T_LIT( "CBSInstallHandler::RunL start") );

    if( iStatus == KErrNone )

        {

        TRACE( T_LIT( "CBSInstallHandler::RunL installing...") );

        TRAP_IGNORE( InstallNewFilesL() );

        StartObservingL();

        }

    else

        {

        TRACE( T_LIT( "CBSInstallHandler::RunL observing stopped") );

        }

	TRACE( T_LIT( "CBSInstallHandler::RunL end") );

    }

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

// CBSInstallHandler::LaunchInstallerAppL()

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

//

void CBSInstallHandler::LaunchInstallerAppL()

    {

	TRACE( T_LIT( "CBSInstallHandler::LaunchInstallerAppL start") );

    // initialize RApaLsSession

    RApaLsSession apas;

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

    CleanupClosePushL( apas );

    apas.GetAllApps();

    // start installer

    CApaCommandLine* command = CApaCommandLine::NewLC();

    command->SetExecutableNameL( KInstallerApp );

    User::LeaveIfError( apas.StartApp( *command ) );

    TRACE( T_LIT( "CBSInstallHandler::LaunchInstallerAppL bsinstall.exe launched OK") );

    CleanupStack::PopAndDestroy( 2 ); // apas, command

	TRACE( T_LIT( "CBSInstallHandler::LaunchInstallerAppL end") );

    }

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

// CBSInstallHandler::SyncFilesL()

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

//

TBool CBSInstallHandler::SyncFilesL( const TDesC& aSrcDir, const TDesC& aDestDir, 

                                     TInstallOperation aOperation )

    {

	TRACE( T_LIT( "CBSInstallHandler::SyncFilesL start") );

    // Check new install folder

    HBufC* fileBuf = HBufC::NewLC( KMaxFileName );

    TPtr file( fileBuf->Des() );

    GetPrivateFolder( file, aSrcDir );

    TBool ret = BaflUtils::PathExists( iFs, file );

    if( !ret )

        {

        // install folder doesn't exist.

    	TRACE( T_LIT( 

            "CBSInstallHandler::SyncFilesL no src folder!") );

        CleanupStack::PopAndDestroy( fileBuf );

        return EFalse;

        }

    // Apply extension filter

    file.Append( KBrandWild );       //

    file.Append( KBrandInstallExt ); // *.install

    // Get list of src dir files

    CDir* dir = NULL;

    User::LeaveIfError( iFs.GetDir( file, 

        KEntryAttNormal, ESortNone, dir ) );

    CleanupStack::PushL( dir );

    // Create destination directory

    GetPrivateFolder( file, aDestDir );

    BaflUtils::EnsurePathExistsL( iFs, file );

    // Compare source dir to destination

    TBool OperationExecuted = EFalse;

    TInt count = dir->Count();

    for( TInt i = 0; i < count; i++ )

        {

        GetPrivateFolder( file, aDestDir );

        file.Append( (*dir)[i].iName );

        if( !BaflUtils::FileExists( iFs, file ) )

            {

            // file does not exist in destionation dir

            // => react according to operation

            HBufC* fileSrcBuf = HBufC::NewLC( KMaxFileName );

            TPtr fileSrc( fileSrcBuf->Des() );

            GetPrivateFolder( fileSrc, aSrcDir );

            fileSrc.Append( (*dir)[i].iName );

            switch( aOperation )

                {

                case EInstallCopyNewToDest:

                    {

                    // copy new files from src to destination

                    TRACE( T_LIT( "CBSInstallHandler::SyncFilesL copy") );

                    OperationNotifyL( aOperation, file );

                    User::LeaveIfError( BaflUtils::CopyFile( 

                        iFs, fileSrc, file ) );

                    break;

                    }

                case EInstallDeleteFromSrc:

                    {

                    // delete files from src if they are not found from dest

                    TRACE( T_LIT( "CBSInstallHandler::SyncFilesL del") );

                    OperationNotifyL( aOperation, fileSrc );

                    User::LeaveIfError( BaflUtils::DeleteFile( iFs, fileSrc ) );

                    break;

                    }

                default:

                    {

                    // Every operation should have a case!

                    __ASSERT_DEBUG( EFalse, 

                        User::LeaveIfError( KErrArgument ) );

                    }

                }

            OperationExecuted = ETrue;

            CleanupStack::PopAndDestroy( fileSrcBuf );

            }

        }

    CleanupStack::PopAndDestroy( 2 ); // fileBuf, dir

    TRACE( T_LIT( "CBSInstallHandler::SyncFilesL end") );

    return OperationExecuted;

    }

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

// CBSInstallHandler::OperationNotifyL()

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

//

void CBSInstallHandler::OperationNotifyL( TInstallOperation aOperation, 

                                          const TDesC& aSrcFile )

    {

	TRACE( T_LIT( "CBSInstallHandler::OperationNotifyL start") );

    if( aOperation == EInstallDeleteFromSrc )

        {

        // parse brand id and application id from filename

        TParse parse;

        parse.Set( aSrcFile, NULL, NULL );

        // find ids from filename

        TInt firstSepar = parse.Name().Find( KInstallFileDataSeparator );

        TInt secondSepar = parse.Name().

            Mid( firstSepar + 1 ).Find( KInstallFileDataSeparator );

        TInt cutlen = 0;

        secondSepar == KErrNotFound ? cutlen = parse.Name().Length() :

                                      cutlen = firstSepar + secondSepar + 1;

        // brandString: [brandId]$[appId]

        TPtrC brandString ( parse.Name().Left( cutlen ) );

        if( IsBrandInstalled( brandString ) )

            {

            TRACE( T_LIT( "CBSInstallHandler::OperationNotifyL %S exists in import\\install =>RProperty NOT UPDATED!"),&aSrcFile );

            // brand still exists, so no need to uninstall.

            return;

            }

        // Create discardedbrand.txt file in the /appid/brandid path

        CreateFlagFile( aSrcFile );

        UpdateRPropertyL( brandString );

        TRACE( T_LIT( "CBSInstallHandler::OperationNotifyL uninstall string to pub&sub updated OK") );

        }

	TRACE( T_LIT( "CBSInstallHandler::OperationNotifyL end") );

    }

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

// CBSInstallHandler::IsBrandInstalled()

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

//

TBool CBSInstallHandler::IsBrandInstalled( const TDesC& aBrand )

    {

	TRACE( T_LIT( "CBSInstallHandler::IsBrandInstalled start") );

    TFileName file;

    GetPrivateFolder( file, KInstallObservePath );

    file.Append( aBrand );

    file.Append( KBrandInstallExt );

    // check file directly: 

    // aaa$bbb -> aaa$bbb.install

    CDir* dir = NULL;

    iFs.GetDir( file, KEntryAttNormal, ESortNone, dir );

    if( dir->Count() > 0 )

        {

        // brand is installed

        delete dir;

    	TRACE( T_LIT( "CBSInstallHandler::IsBrandInstalled true") );

        return ETrue;

        }

    delete dir;

    dir = NULL;

    GetPrivateFolder( file, KInstallObservePath );

    file.Append( aBrand );

    file.Append( KInstallFileDataSeparator );

    file.Append( KBrandWild );

    file.Append( KBrandInstallExt );

    // check file with different versions:

    // aaa$bbb -> aaa$bbb$*.install

    iFs.GetDir( file, KEntryAttNormal, ESortNone, dir );

    if( dir->Count() > 0 )

        {

        // brand is installed

        delete dir;

    	TRACE( T_LIT( "CBSInstallHandler::IsBrandInstalled true") );

        return ETrue;

        }

    delete dir;

    // brand is not installed

	TRACE( T_LIT( "CBSInstallHandler::IsBrandInstalled false") );

    return EFalse;

    }

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

// CBSInstallHandler::GetPrivateFolder()

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

//

void CBSInstallHandler::GetPrivateFolder( TDes& aPath, const TDesC& aAppend )

    {

    iFs.PrivatePath( aPath );

    aPath.Insert( 0, KInstallDrive );

    aPath.Append( aAppend );

    }

void CBSInstallHandler::CreateFlagFile(const TDesC& aSrcFile)

	{

	TRACE( T_LIT( "CBSInstallHandler::CreateFlagFile begin") );

	// parse brand id and application id from aSrcFile

	TParse parse;

	parse.Set( aSrcFile, NULL, NULL );

	// find ids from filename

	TInt firstSepar = parse.Name().Find( KInstallFileDataSeparator );

	// Get the brand Id

	HBufC* brandId = (parse.Name().Left(firstSepar)).AllocL();

	// to get application id

	TInt secondSepar = parse.Name().

	    Mid( firstSepar + 1 ).Find( KInstallFileDataSeparator );

	TInt cutlen = 0;

	secondSepar == KErrNotFound ? cutlen = parse.Name().Length() :

	                              cutlen = firstSepar + secondSepar + 1;

	TParse parseAgain;

	parseAgain.Set(parse.Name().Left( cutlen ), NULL, NULL );

	HBufC* applicationId = (parseAgain.Name().Right( cutlen - firstSepar - 1)).AllocL(); 

	HBufC *fileName = CBSStorageManager::ConstructDiscardBrandFileNameL(*applicationId, *brandId) ;

	CleanupStack::PushL(fileName);

	HBufC *fullPath = CBSStorageManager::FullDiscardBrandFileNameLC( *fileName ) ;

	// crate a flag file

	RFile file;

	file.Create(iFs, *fullPath, EFileWrite);

	file.Close() ;

	delete brandId ;

	delete applicationId ;

	CleanupStack::PopAndDestroy(fullPath) ;

	CleanupStack::PopAndDestroy(fileName) ;

	TRACE( T_LIT( "CBSInstallHandler::CreateFlagFile end") );

	}

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

// CBSInstallHandler::CheckForDiscardedBrandsL()

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

//

TBool CBSInstallHandler::CheckForDiscardedBrandsL( const TDesC& aDir )

    {

    TRACE( T_LIT( "CBSInstallHandler::CheckForDiscardedBrandsL begin") );

    TBool discardedBrandExists( EFalse );

    CDir* appDir = NULL; // will contain all application folders     

    TPath path;

    iFs.PrivatePath( path );

    path.Insert( 0, KInstallDrive );

    path.Append( aDir ); 

    path.Append( KDirSeparator ); // "C:\\private\\102828dd\\data\\"    

    User::LeaveIfError( 

        iFs.GetDir( path, KEntryAttDir, ESortNone, appDir ) );

    CleanupStack::PushL( appDir );

    /*TFileName find( path );

    find.Append( KInstallFiles );*/

    // create array of files (as text)

    TInt count = appDir->Count();

    //for each application do...

    for( TInt i = 0; i < count; i++ )

        { 

        TFileName file( path );

        file.Append( (*appDir)[i].iName );

        file.Append( KDirSeparator ); // "C:\\private\\102828dd\\data\\xsp\\"    

        TRACE( T_LIT( "CBSInstallHandler::CheckForDiscardedBrandsL AppDir='%S'"),&file );

        CDir* brandDir = NULL; // will contain all brand folder for each application 

        User::LeaveIfError( 

            iFs.GetDir( file, KEntryAttDir, ESortNone, brandDir ) );

        CleanupStack::PushL( brandDir );

        TInt countBrands = brandDir->Count();

        //for each brand of a certain application do...

        for( TInt j(0) ; j < countBrands ; j++ )

            {            

            TFileName discardedFile( file );

            discardedFile.Append( (*brandDir)[j].iName );

            discardedFile.Append( KDirSeparator );

            discardedFile.Append( KDiscardBrandFileName );   // "C:\\private\\102828dd\\data\\xsp\\branda\\discarded.txt"    

            TRACE( T_LIT( "CBSInstallHandler::CheckForDiscardedBrandsL BrandDir='%S'"),&file );

            // check for the existance of the 'discarded.txt' file  

            if ( BaflUtils::FileExists( iFs, discardedFile ) )

                {

                TRACE( T_LIT( "CBSInstallHandler::CheckForDiscardedBrandsL '%S' found!=>brand is discarded."),&discardedFile );

                discardedBrandExists = ETrue;

                //set RProperty for this brand                

                //the string written to RProperty: 

                //"[brandId]$[applicationId]"(e.g."branda$xsp")

                HBufC* writeBuf = HBufC::NewLC( RProperty::KMaxPropertySize );

                TPtr writeData( writeBuf->Des() );                

                writeData.Append( (*brandDir)[j].iName );

                writeData.Append( KInstallFileDataSeparator );

                writeData.Append( (*appDir)[i].iName );

                TRACE( T_LIT( "CBSInstallHandler::CheckForDiscardedBrandsL uninstallstring='%S'"),writeBuf );

                //UpdateProperty here!!!

                UpdateRPropertyL( writeData );

                CleanupStack::PopAndDestroy( writeBuf );

                }

            }        

        CleanupStack::PopAndDestroy( brandDir );

        }

    CleanupStack::PopAndDestroy( appDir );    

    TRACE( T_LIT( "CBSInstallHandler::CheckForDiscardedBrandsL end") );

    return discardedBrandExists;

    }

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

// CBSInstallHandler::UpdateRPropertyL 

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

//

void CBSInstallHandler::UpdateRPropertyL( const TDesC& aUninstallationString )

    {

    HBufC* dataBuf = HBufC::NewLC( RProperty::KMaxPropertySize );

    TPtr data( dataBuf->Des() );                

    // Update uninstall string to pub&sub (only if the RProperty does not 

    // contain the unistallation string yet)