/*

* Copyright (c) 2009-2010 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: 

*     Declares DownloadHandler class for application.

*

*

*/

#ifndef __ADMDOWNLOADHANDLER_H__

#define __ADMDOWNLOADHANDLER_H__

#include <e32base.h>

#include <downloadmgrclient.h>

#include "globals.h"

#include "networkstatusobserver.h"

// Forward declarations

class CADMAppUi;

class CNetworkStatusListener;

class RFileLogger;

class CDownloadHandler : public CBase,

	public MHttpDownloadMgrObserver,

	public MNetworkStatusObserver

	{

public:

	class MDownloadClient

		{

	public:

		virtual void HandleIapChanged( const TUint32 aIAP ) = 0;

		virtual void HandleHttpFetchCompleted( const TDesC& aDlFilename, const TInt aDownloadType, const TInt32 aBytesDownloaded, const TReal32 aAvgDlSpeed, const TInt64 aDlTime ) = 0;

		virtual void HandleHttpFetchInProgress( const TInt32 aDownloaded, const TInt32 aTotalDownloadSize, const TReal32 aAvgDlSpeed ) = 0;

		virtual void HandleHttpFetchFailure( const TDesC& aDlFilename, const TInt aGlobalErrorId, const TInt aErrorId, const TInt aFetchType ) = 0;

		virtual void HandleDownloadDeleting() = 0;

		};

#ifdef USE_LOGFILE

public:

	static CDownloadHandler* NewL(MDownloadClient* aDlClient, RFileLogger& aLogger, const TBool aMasterInstance);

	void Log(TRefByValue<const TDesC16> aFmt, ...);

private:

	CDownloadHandler( MDownloadClient* aDlClient, RFileLogger& aLogger, const TBool aMasterInstance );

private:

	RFileLogger&        iLog; ///< Not Owned

#else

public:

	static CDownloadHandler* NewL(MDownloadClient* aDlClient, const TBool aMasterInstance);

	static CDownloadHandler* NewLC(MDownloadClient* aDlClient, const TBool aMasterInstance);

private:

	CDownloadHandler( MDownloadClient* aDlClient, const TBool aMasterInstance );

#endif

public:

	~CDownloadHandler();

public:

	void HandleDMgrEventL( RHttpDownload& aDownload, THttpDownloadEvent aEvent );

	void StartDownloadL( const TDesC8& aDepUrl, const TDesC& aFileName, const TDesC& aDownloadPath, const TInt aFetchType );

	void CancelAllDownloads();

	void SetIAP( TUint32 aIAP );

	inline EDownloadError GetDownloadError() const

		{

		return iDownloadError;

		}

	//From MNetworkStatusObserver

	void HandleNetworkStatusChangedL( const TInt aStatus );

private:

	void ConstructL();

	TBool ProcessDlErrors(const TInt32 aGlErrId, const TInt32 aErrId, EDownloadError& aDownloadError);

	TInt64 UpdateDownloadSpeed(const TInt32 aBytesDownloaded);

	void DoHandleHttpFetchFailure(const TDesC& aDlFilename, const TInt aGlobalErrorId, const TInt aErrorId);

private:

	MDownloadClient*    iDlClient;

	CNetworkStatusListener* iNetworkStatusListener;

	TInt                iFetchType;

	TBool               iMasterInstance;

	TBool               iNetworkLost; // ETrue, if used network connection is lost during download

	TBool               iCancelled; // ETrue, if called HandleHttpFailure()

	HBufC8*             iUrl;

	TPtrC8              iPtrToUrl; //to avoid a temporary TPtrC8 being passed by IPC

	HBufC*              iResponseBodyFileName;

	TPtr                iPtrToResponseBodyFileName;

	RHttpDownloadMgr    iDownloadManager;

	TInt32              iIAP;

	TInt                iConnectionAttempt;

	EDownloadError      iDownloadError;

	TInt                iDownloadState;

	TInt                iProgressState;

	TTime               iDlStartTime;

	TReal32             iDlAvgSpeed;

	};

#endif  //__ADMDOWNLOADHANDLER_H__