/*

* Copyright (c) 2007-2010 Sebastian Brannstrom, Lars Persson, EmbedDev AB

*

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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:

* EmbedDev AB - initial contribution.

*

* Contributors:

*

* Description:

*

*/

#ifndef SHOWENGINE_H_

#define SHOWENGINE_H_

#include <e32base.h>

#include <APGCLI.H>

#include "constants.h"

#include "ShowInfo.h"

#include "PodcastModel.h"

#include "HttpClient.h"

#include "ShowEngineObserver.h"

#include "MetaDataReader.h"

#include <sqlite3.h>

struct TDownload

	{

	TUint iIndex;

	TUint iUid;

	};

typedef enum TShowFilter

	{

	EAllShows,

	ENewShows,

	EDownloadedShows,

	ENewAndDownloadedShows

	};

class CShowEngine : public CBase, public MHttpClientObserver, public MMetaDataReaderObserver

	{

public:

	IMPORT_C static CShowEngine* NewL(CPodcastModel& aPodcastModel);

	IMPORT_C virtual ~CShowEngine();

public:

	IMPORT_C void AddDownloadL(CShowInfo& info);

	IMPORT_C void RemoveDownloadL(TUint aUid);

	IMPORT_C void RemoveAllDownloadsL();

	IMPORT_C void SuspendDownloads();

	IMPORT_C void ResumeDownloadsL();

	IMPORT_C TInt GetNumDownloadingShows();

	IMPORT_C CShowInfo* ShowDownloading();

	IMPORT_C CShowInfo* GetShowByUidL(TUint aShowUid);

	IMPORT_C CShowInfo* GetNextShowByTrackL(CShowInfo* aShowInfo);

	// show access methods

	IMPORT_C void GetAllShowsL(RShowInfoArray &aArray);

	IMPORT_C void GetShowsByFeedL(RShowInfoArray &aArray, TUint aFeedUid);

	IMPORT_C void GetShowsDownloadedL(RShowInfoArray &aArray);

	IMPORT_C void GetNewShowsL(RShowInfoArray &aArray);

	IMPORT_C void GetShowsDownloadingL(RShowInfoArray &aArray);

	IMPORT_C CShowInfo* DBGetShowByFileNameL(TFileName aFileName);

	IMPORT_C void AddShowL(const CShowInfo& item);

	IMPORT_C void DeletePlayedShowsL(RShowInfoArray &aShowInfoArray);

	IMPORT_C void DeleteAllShowsByFeedL(TUint aFeedUid,TBool aDeleteFiles=ETrue);

	IMPORT_C void DeleteShowL(TUint aShowUid, TBool aRemoveFile=ETrue);

	IMPORT_C void DeleteOldShowsByFeedL(TUint aFeedUid);

	IMPORT_C void AddObserver(MShowEngineObserver *observer);

	IMPORT_C void RemoveObserver(MShowEngineObserver *observer);

	IMPORT_C void NotifyShowListUpdatedL();

	IMPORT_C void UpdateShowL(CShowInfo& aInfo);

	IMPORT_C void GetMimeType(const TDesC& aFileName, TDes& aMimeType);

	IMPORT_C void CheckForDeletedShows(TUint aFeedUid);

	IMPORT_C CMetaDataReader& MetaDataReader();

	IMPORT_C void SetShowFilter(TShowFilter aFilter);

	IMPORT_C void MoveDownloadUpL(TUint aUid);

	IMPORT_C void MoveDownloadDownL(TUint aUid);

private:

	// from HttpClientObserver, dont have to be public

	void Connected(CHttpClient* aClient);

	void Disconnected(CHttpClient* aClient);

	void CompleteL(CHttpClient* aClient, TInt aError);

	void Progress(CHttpClient* aHttpClient, int aBytes, int aTotalBytes);

	void DownloadInfo(CHttpClient* aClient, int aSize);

	void FileError(TUint aError);

	// from MetaDataReaderObserver

	void ReadMetaDataL(CShowInfo& aShowInfo);

	void ReadMetaDataCompleteL();

private:

	CShowEngine(CPodcastModel& aPodcastModel);

	void ConstructL();

	void GetShowL(CShowInfo *info);

	void NotifyDownloadQueueUpdatedL();

	void NotifyShowDownloadUpdatedL(TInt aBytesOfCurrentDownload, TInt aBytesTotal);

	void NotifyShowFinishedL(TInt aError);

	void DownloadNextShowL();

	static TInt CompareShowsByDate(const CShowInfo &a, const CShowInfo &b);

	static TBool CompareShowsByUid(const CShowInfo &a, const CShowInfo &b);

	static TInt CompareShowsByTitle(const CShowInfo &a, const CShowInfo &b);

	static TInt CompareShowsByTrackNo(const CShowInfo &a, const CShowInfo &b);

	void AddShowToMpxCollection(CShowInfo &aShowInfo);

private:

	// DB methods

	CShowInfo* DBGetShowByUidL(TUint aUid);

	void DBFillShowInfoFromStmtL(sqlite3_stmt *st, CShowInfo* showInfo);

	void DBAddShowL(const CShowInfo& aItem);

	void DBUpdateShowL(CShowInfo& aItem);

	void DBGetShowsByFeedL(RShowInfoArray& aShowArray, TUint aFeedUid);

	void DBGetAllShowsL(RShowInfoArray& aShowArray);

	void DBGetNewShowsL(RShowInfoArray& aShowArray);

	void DBGetDownloadedShowsL(RShowInfoArray& aShowArray);

	void DBDeleteAllShowsByFeedL(TUint aFeedUid);

	void DBDeleteOldShowsByFeedL(TUint aFeedUid);

	void DBDeleteShowL(TUint aUid);

	void DBRemoveAllDownloadsL();

	void DBRemoveDownloadL(TUint aUid);

	void DBGetAllDownloadsL(RShowInfoArray& aShowArray);

	TUint DBGetDownloadsCountL();

	void DBAddDownloadL(TUint aUid);

	CShowInfo* DBGetNextDownloadL();

	void DBSwapDownloadsL(TDownload aFirstDL, TDownload aSecondDL);

private:

	CHttpClient* iShowClient;			

	CPodcastModel& iPodcastModel;

	// observers that will receive callbacks

    	RArray<MShowEngineObserver*> iObservers;

	// The show we are currently downloading

	CShowInfo* iShowDownloading;

    TUint iDownloadErrors;

    CMetaDataReader* iMetaDataReader;

    RApaLsSession iApaSession;

	TBuf8<512> iRecogBuffer;

	sqlite3& iDB;

    TBuf<KDefaultSQLDataBufferLength> iSqlBuffer;

   	TShowFilter iShowFilter;

	};

#endif /*SHOWENGINE_H_*/