/*

* Copyright (c) 2006 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 header file describes the class that handles the storage

*                of triggers in RAM Structures.

*

*/

#include "lbttriggeridgenerator.h"

_LIT(KLbtTriggerIdFile,"lbttriggeridgenerator.dat");

// ======== MEMBER FUNCTIONS ========

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

// The Symbian 2 phase constructor

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

//

CLbtTriggerIdGenerator* CLbtTriggerIdGenerator::NewL()

    {

    CLbtTriggerIdGenerator* self = new( ELeave ) CLbtTriggerIdGenerator;

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

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

// Destructor

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

//

CLbtTriggerIdGenerator::~CLbtTriggerIdGenerator()

    {

    iFileHandle.Close();

    iFileServer.Close();

    }

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

// Constructor

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

//

CLbtTriggerIdGenerator::CLbtTriggerIdGenerator()

    {

    // Nothing to do now

    }

void CLbtTriggerIdGenerator::SetTriggerId(TInt64 aId)

	{

	HBufC8* trigId = NULL;

	TRAP_IGNORE(trigId=HBufC8::NewL(sizeof(TInt64)));

	TPtr8 ptr=trigId->Des();

	ptr.AppendNum(aId);

	TInt pos = 0;

	iFileHandle.Seek(ESeekStart,pos);

	iFileHandle.Write(ptr);

	delete trigId;

	}

TInt64 CLbtTriggerIdGenerator::GetTriggerId()

	{

	HBufC8* trigId = NULL;

	TRAP_IGNORE(trigId=HBufC8::NewL(sizeof(TInt64)));

	TPtr8 ptr=trigId->Des();	

	TInt pos = 0;

	iFileHandle.Seek(ESeekStart,pos);

	iFileHandle.Read(ptr);

	TLex8 lex(ptr);

	TInt64 iD;

	lex.Val(iD);

	delete trigId;

	return iD;	

	}

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

// The 2nd phase Symbian Constructor

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

//

void CLbtTriggerIdGenerator::ConstructL()

    {

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

	 // Obtain the file path

    TFileName trigIdFile;

    iFileServer.SessionPath(trigIdFile);

    // Create the  Directory ie the private directory of the process

    iFileServer.MkDirAll(trigIdFile);

    // Generate the Db file

    trigIdFile.Append(KLbtTriggerIdFile);

	TInt createError=iFileHandle.Create(iFileServer,trigIdFile,EFileWrite);

	if(createError==KErrAlreadyExists)

	    {

	    createError=iFileHandle.Open(iFileServer,trigIdFile,EFileWrite);

	    }

	else if(createError==KErrNone)

	    {

	    SetTriggerId(0);

	    }

    User::LeaveIfError(createError);	    

    }

// end of file