/*

* Copyright (c) 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:  Class for database import/export and maintenance

*

*/

// INCLUDE FILES

#include "mdsmaintenanceengine.h"

#include "mdslogger.h"

#include "mdsmanipulationengine.h"

#include "mdcserializationbuffer.h"

#include "mdsimportexport.h"

#include "mdssqliteconnection.h"

#include "mdsschema.h"

#include "mdssqldbmaintenance.h"

#include "mdsdbconnectionpool.h"

#include "mdsindexer.h"

#include "mdspreferences.h"

__USES_LOGGER

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

// NewL

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

//

CMdSMaintenanceEngine* CMdSMaintenanceEngine::NewL()

    {

    CMdSMaintenanceEngine* self = CMdSMaintenanceEngine::NewLC();

    CleanupStack::Pop( self );

    return self;

    }

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

// NewLC

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

//

CMdSMaintenanceEngine* CMdSMaintenanceEngine::NewLC()

    {

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

    CleanupStack::PushL( self );

    self->ConstructL( );

    return self;

    }

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

// Constructor

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

//

CMdSMaintenanceEngine::CMdSMaintenanceEngine() : iPrivateSchemaFileInvalid( EFalse )

    {

    }

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

// NewL

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

//

void CMdSMaintenanceEngine::ConstructL()

    {

    iMaintenance = CMdSSqlDbMaintenance::NewL();

    }

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

// Destructor

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

//

CMdSMaintenanceEngine::~CMdSMaintenanceEngine()

    {

    delete iMaintenance;

    iMaintenance = NULL;

    }

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

// InitConnectionL

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

//

void CMdSMaintenanceEngine::InitConnectionL()

    {

    // open the database

    MMdSDbConnectionPool::ConnectAllL();

    }

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

// CloseDatabaseL

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

//

void CMdSMaintenanceEngine::CloseDatabase()

	{

	MMdSDbConnectionPool::DisconnectAll();

	}

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

// DeleteDatabaseL

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

//

void CMdSMaintenanceEngine::DeleteDatabase()

	{

	CMdSMaintenanceEngine::CloseDatabase();    

	CMdSSqLiteConnection::DeleteDb( );

	}

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

// InstallL

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

//

void CMdSMaintenanceEngine::InstallL( CMdSManipulationEngine& aManipulate, CMdsSchema& aSchema )

    {

    __LOG1( ELogAlways, "Trying to validate MDS DB, error expected if not created(first boot): %d", 0 );

    TBool isValid(EFalse);

    TRAPD(err, isValid = iMaintenance->ValidateL( ));

        {

        DeleteDatabase();

        User::Leave( err );

        }

    else if ( !isValid )

        {

        // Pump up priority to load the MDS DB up as fast as possible to

        // enable client side session connections

        RProcess process;

        process.SetPriority( EPriorityForeground );

        __LOG1( ELogAlways, "MDS DB not valid, creating tables: %d", 0 );

        // first-time init: re-form the database completely

    	iMaintenance->CreateDatabaseL( );

		const TUint KMdSServerUid = 0x0320e65f; // temporal uid

		TInt schemaError( KErrNone );

		if( iPrivateSchemaFileInvalid )

		    {

		    // if schema was updated in FOTA update, read the updated schema from ROM

		    TRAP( schemaError, ImportSchemaL( aSchema, KSchemaRomImportFile, KMdSServerUid) );

		    }

		else

		    {

		    // try to read schema file from C drive

		    TRAP( schemaError, ImportSchemaL( aSchema, KSchemaImportFile, KMdSServerUid) );

		    }

		if( schemaError != KErrNone )

			{

			__LOG1( ELogAlways, "Schema reading error: %d", schemaError );

			// if schema file is not found, try to read from rom (Z) drive

			if ( schemaError == KErrNotFound || schemaError == KErrPathNotFound )

				{

				TRAP( schemaError, ImportSchemaL( aSchema, KSchemaRomImportFile, KMdSServerUid) );

				}

			else if( !iPrivateSchemaFileInvalid && schemaError == KErrCorrupt )

			    {

			    iPrivateSchemaFileInvalid = ETrue;

			    }

			else

			    {

			    schemaError = KErrUnknown;

			    }

			if( schemaError != KErrNone )

				{

				__LOG1( ELogAlways, "Schema reading error: %d", schemaError );

				DeleteDatabase();

				User::Leave( schemaError );

				}

			}

		// try to read default import file from C drive

       	TRAPD( err, ImportMetadataL( aManipulate, aSchema, KMdsDefaultImportFile ) );

       	if ( err == KErrNotFound || err == KErrPathNotFound )

       		{

       		// if default import file is not found, try to read from rom (Z) drive

       		// and ignore errors

       		TRAP_IGNORE( ImportMetadataL( aManipulate, aSchema, KMdsDefaultRomImportFile ) );

       		}

       	__LOG1( ELogAlways, "MDS DB tables created %d", 0 );

        // Revert back to default MDS server priority when server is up and running

        process.SetPriority( EPriorityBackground );

        process.Close();

       	StoreDriveMediaIdsL();

        }

    else

        {

        TRAPD( err, LoadSchemaL( aSchema ) );

        if( err != KErrNone )

        	{ 

			DeleteDatabase();

			User::Leave( err );

        	}

        }

    __LOG1( ELogAlways, "CMdSMaintenanceEngine::InstallL complete: %d", 0 );

    }

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

// LoadSchemaL

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

//

void CMdSMaintenanceEngine::LoadSchemaL( CMdsSchema& aSchema )

    {

    CMdsImportExport* impSchema = CMdsImportExport::NewLC();

    impSchema->ImportSchemaFromDBL( aSchema );

    CleanupStack::PopAndDestroy( impSchema );

    aSchema.SerializeToSharedMemoryL();

    }

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

// ImportSchemaL

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

//

void CMdSMaintenanceEngine::ImportSchemaL( CMdsSchema& aSchema, const TDesC16& aFileName, TUint32 aVendorId )

    {

    CMdsImportExport* impSchema = CMdsImportExport::NewLC();

    impSchema->ImportSchemaFromFileL( aFileName, aSchema, aVendorId );

    CleanupStack::PopAndDestroy( impSchema );

    aSchema.StoreToDBL();

	aSchema.SerializeToSharedMemoryL();

    }

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

// ImportMetadataL

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

//

TInt CMdSMaintenanceEngine::ImportMetadataL( CMdSManipulationEngine& aManipulate, CMdsSchema& aSchema, const TDesC16& aFileName )

    {

    CMdsImportExport* importMetadata = CMdsImportExport::NewLC();

    TInt failed = KErrNone;

    TRAPD( err, failed = importMetadata->ImportMetadataL( aManipulate.Manipulate(), aSchema, aFileName ) );

    if (err != KErrNone)

    	{

    	failed = err;

    	}

    CleanupStack::PopAndDestroy( importMetadata );

   	iFailedImports = failed;

    return failed;

    }

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

// ExportMetadataL

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

//

void CMdSMaintenanceEngine::ExportMetadataL( CMdsSchema& aSchema, const TDesC16& aFileName, 

                                             CMdCSerializationBuffer& aItems )

	{

	CMdsImportExport* exporter = CMdsImportExport::NewLC();

	exporter->ExportMetadataL( aSchema, aFileName, aItems );

	CleanupStack::PopAndDestroy( exporter );

    }

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

// StoreDriveMediaIdsL

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

//

void CMdSMaintenanceEngine::StoreDriveMediaIdsL()

	{

	RFs fs;

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

    CleanupClosePushL( fs );

    TVolumeInfo volumeInfo;

    User::LeaveIfError( fs.Volume( volumeInfo, EDriveC ) );

    MMdsPreferences::InsertL( KCMediaIdKey, MMdsPreferences::EPreferenceValueSet,

    		(TUint32) volumeInfo.iUniqueID );

    CleanupStack::PopAndDestroy( &fs );

	}