/*

* Copyright (c) 2004 Nokia Corporation and/or its subsidiary(-ies).

* 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:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Declaration of class CCodDownloadImpl.   

*

*/

#ifndef COD_DOWNLOAD_IMPL_H

#define COD_DOWNLOAD_IMPL_H

// FORWARD DECLARATION

class CCodEngBase;

class CCodUiResource;

class CDocumentHandler;

class CErrorUI;

class CBodyPart;

class CAiwGenericParamList;

// INCLUDES

#include <e32std.h>

#include <f32file.h>

#include <CodDownload.h>

#include <CodLoadObserver.h>

#include <AknServerApp.h>

// CONSTANTS

const TUid KDRMHelperUid = {0x101F85C7};

/**

* Cod Download implementation (behind proxy CCodDownload).

*/

NONSHARABLE_CLASS( CCodDownloadImpl )

: public CActive,

  public MCodLoadObserver,

  public MAknServerAppExitObserver

    {

    public:     // Constructors and destructor

        /**

        * Two-phased constructor. Leaves on failure.

        * @param aProxy Proxy owning this object.

        * @param aBuf The descriptor.

        * @param aType Descriptor data type.

        * @param aObserver Observer.

        * @param aEikEnv Eikon environment or NULL. Can be NULL if download

        * does not require UI functionality.

        * @param aMultipartBoundary Multipart boundary or NULL.

        * Required for processing multipart.

        * @param aMultipartUrl Multipart URL or NULL.

        * Required for processing multipart.

        * @return The constructed object.

        */

        IMPORT_C static CCodDownloadImpl* NewL

            (

            CCodDownload& aProxy,

            const TDesC8& aBuf,

            const TDesC8& aType,

            MCodDownloadObserver& aObserver,

            CEikonEnv* aEikEnv,

            const TDesC8* aMultipartBoundary,

            const TDesC16* aMultipartUrl

            );

        /**

        * Destructor.

        */

        IMPORT_C virtual ~CCodDownloadImpl();

    public:     // New methods

        /**

        * Start download. Panics if already active.

        * Restart is OK for completed downloads.

        * @param aParams Parameters or NULL.

        */

        IMPORT_C void StartL( const CAiwGenericParamList* aParams );

        /**

        * Stop (cancel) download. Safe to call in any state.

        * Some processing still follows (e.g. install-notify).

        */

        IMPORT_C void Stop();

        /**

        * Get progress.

        * @return Progress.

        */

        IMPORT_C const TCodDownloadProgress& Progress() const;

        /**

        * Get name attribute. This may be empty string, if attribute is

        * empty or not available. Do not store pointer (data may change as

        * download proceeds).

        */

        IMPORT_C TPtrC Name();

        /**

        * Get data type of content (or empty string: type may not be

        * available).

        * @return Data type.

        */

        IMPORT_C TPtrC8 Type() const;

        /**

        * Get path of saved content (or empty string).

        * Available only after successful download.

        * @return Path of saved content. Fits to KMaxFileName.

        */

        IMPORT_C TPtrC GetPath() const;

        /**

        * Perform service flow after a successful or failed download.

        * This consists of zero, one or both of

        * - launching dwonloaded content

        * - activating Next-URL.

        * Load may also be retried.

        * Call this in response to EEndLoad event.

        */

        IMPORT_C void ServiceFlowL();

        /**

        * Get Next-URL.

        * @return Next-URL. Owner is the caller.

        */

        IMPORT_C HBufC8* NextUrlL() const;

        /**

        * Get PostResponse-URL.

        * @return PostResponse-URL. Owner is the caller.

        */

        IMPORT_C HBufC8* GetPostResponseUrlL() const;

        /**

        * Check if downloading to removable media.

        * Available after EAccept event.

        * @return ETrue if downloading to removable media.

        */

        IMPORT_C TBool RemovableMedia() const;

        /**

        * Set COD download attached

        * @param aValue If equals ETrue - download is attached

        */

        IMPORT_C void SetCodDlAttached(const TBool aValue);

        /**

        * Get updated DD URi

        * @return Updated DD-URL.

        */

        IMPORT_C HBufC8* UpdatedDDUriL() const;

        /**

        * Pause COD Download.

        */           

        IMPORT_C void Pause();

        /**

        * Two-phased constructor. Leaves on failure.

        * @param aProxy Proxy owning this object.

        * @param aDownloadId The download id.

        * @param aDlUid The app UID.

        * @param aType Descriptor data type.

        * @param aObserver Observer.

        * @param aEikEnv Eikon environment or NULL. Can be NULL if download

        * does not require UI functionality.

        * @param aMultipartBoundary Multipart boundary or NULL.

        * Required for processing multipart.

        * @param aMultipartUrl Multipart URL or NULL.

        * Required for processing multipart.

        * @return The constructed object.

        */            

        IMPORT_C static CCodDownloadImpl* NewL

            (

            CCodDownload& aProxy,

            const TInt aDownloadId,

            const TUid aDlUid,

            const TDesC8& aType,

            MCodDownloadObserver& aObserver,

            CEikonEnv* aEikEnv,

            const TDesC8* aMultipartBoundary,

            const TDesC16* aMultipartUrl            

            );

        /**

        * Get Destination file name 

        * @param aMOIndex media object index between 1 to 'n'

        * @return NULL if index out of range

        */

        IMPORT_C TPtrC GetDestFilePath (TInt aMOIndex ) const;

        /**

        * Set the CodData stream descriptor.

        * @param aDesStream.

        */

        IMPORT_C HBufC8* UpdatedDownloadDataL() const;

        /**

        * Set the stream descriptor for single mediaq object (track).

        * @param aDesStream.

        */

        IMPORT_C HBufC8* UpdatedTrackDataL(TInt& aValue) const;

        /**

        * Currently active COD download 

        */          

        IMPORT_C TInt ActiveDownload();

    public:     // Transparent user data

        /**

        * Get tansparent user data.

        * @return User data.

        */

        IMPORT_C TAny* UserData() const;

        /**

        * Set tansparent user data.

        * @param aUserData User data.

        */

        IMPORT_C void SetUserData( TAny* aUserData );

    private:    // Constructor

        /**

        * Constructor.

        * @param aProxy Proxy owning this object.

        * @param aObserver Observer.

        * @param aEikEnv Eikon environment or NULL. Can be NULL if download

        * does not require UI functionality.

        */

        inline CCodDownloadImpl

            (

            CCodDownload& aProxy,

            MCodDownloadObserver& aObserver,

            CEikonEnv* aEikEnv

            );

        /**

        * Second phase constructor. Leaves on failure.

        * @param aBuf The descriptor.

        * @param aType Data type.

        * @param aMultipartBoundary Multipart boundary or NULL.

        * Required for processing multipart.

        * @param aMultipartUrl Multipart URL or NULL.

        * Required for processing multipart.

        */

        void ConstructL

            (

            const TDesC8& aBuf,

            const TDesC8& aType,

            const TDesC8* aMultipartBoundary,

            const TDesC16* aMultipartUrl

            );

        /**

        * Second phase constructor. Leaves on failure.

        * @param aDownloadId The download id.        

        * @param aDlUid The app uid.

        * @param aType Data type.

        * @param aMultipartBoundary Multipart boundary or NULL.

        * Required for processing multipart.

        * @param aMultipartUrl Multipart URL or NULL.

        * Required for processing multipart.

        */            

        void ConstructL

            (

            const TInt aDownloadId,

            const TUid aDlUid,

            const TDesC8& aType,

            const TDesC8* aMultipartBoundary,

            const TDesC16* aMultipartUrl

            );

    private:  // from CActive

        /**

        * Cancel protocol implementation.

        */

        virtual void DoCancel();

        /**

        * Outstanding request completed.

        */

        virtual void RunL();

        /**

        * Handle error.

        * @param aError Error code.

        * @return KErrNone.

        */

        virtual TInt RunError( TInt aError );

    private:    // processing completion

        /**

        * SetL succeeded.

        */

        void SetOkL();

        /**

        * Load done.

        */

        void LoadDoneL();

        /**

        * Perform service flow after a successful or failed download.

        * This consists of zero, one or both of

        * - launching dwonloaded content

        * - activating Next-URL.

        * Load may also be retried.

        * @return ETrue if application should exit.

        */

        TBool DoServiceFlowL();

        /**

        * Handle successful load.

        * @return ETrue if application should exit.

        */

        TBool LoadOkL();

        /**

        * Handle failed load.

        * @return ETrue if application should exit.

        */

        TBool LoadFailedL();

        /**

        * Handle successful ROAP.

        * @return ETrue if application should exit.

        */

        TBool RoapOkL();

        /**

        * Handle successful RoAcq ROAP.

        * @return ETrue if application should exit.

        */

        TBool RoAcqOkL();

        /**

        * Handle failed ROAP.

        * @return ETrue if application should exit.

        */

        TBool RoapFailedL();

        /**

        * Service flow: launch browser and (optionally) activate Next-URL,

        * if exists.

        */

        void ActivateNextUrlL();

        /**

        * Finished.

        */

        void Done();

    private:    // from MCodLoadObserver

        /**

        * Get download root path.

        * Leave with KErrCancel if query is cancelled.

        * @param aRootPath Root path returned here.

        */

        virtual void GetRootPathL( TDes& aRootPath );

        /**

        * Starting load (fetch content or error-notify).

        * @param aStatusCode HTTP status code.

        * - 900 (Success) indicates start of content load.

        * - Other values indicate start of error report.

        */

        virtual void StartLoadL( TInt aStatusCode );

        /**

        * Cancelling content load started. Not called if cancelling error

        * report.

        */

        virtual void StartCancelL();

        /**

        * Load progress update.

        * @param aFinalValue Final progress value.

        * @param aCurrentValue Current progress value.

        */

        virtual void ProgressL( TInt aFinalValue, TInt aCurrentValue );

        /**

        * Processing ended.

        * Note that if processing does not include loading, this method can be

        * called without a preceding StartLoadL call.

        * @param aStatusCode HTTP status code (aError mapped to HTTP status

        * code).

        * @param aError Error code of result. (The Set(), Accept() or Reject()

        * request to CodEng will also complete with this value.)

        */

        virtual void Done( TInt aStatusCode, TInt aError );

        /**

        * Get confirmation for creating network connection.

        * @return ETrue if connection can be created.

        */

        virtual TBool ConfirmConnectL();

        /**

        * Opening a connection.

        * @param aIap AP to be used for creating the connection.

        */

        virtual void StartConnect( TUint32 aIap );

        /**

        * Connected.

        */

        virtual void EndConnect();

        /**

        * Authenticate user.

        * @param aHost Host.

        * @param aRealm Realm.

        * @param aProxyAuth ETrue if this is a proxy authentication.

        * @param aUsername Return username here.

        * @param aPassword Return password here.

        * @return ETrue if auth is OK, EFalse if cancelled.

        */

        virtual TBool UserAuthL

            (

            const TDesC& aHost,

            const TDesC& aRealm,

            TBool aProxyAuth,

            TDes& aUsername,

            TDes& aPassword

            );

        /**

        * ROAP Trigger parsed (success or error).

        * @param aData ROAP Trigger data.

        */

        virtual void RoapTriggerParsedL( const CRoapData& aData );

        /**

        * Connection Error

        * return: Connection Error .

        */

		inline virtual void SetConnError( TInt aError) {iConnError = aError;}

        /**

        * Connection Error

        * return: Connection Error .

        */

		inline virtual TInt ConnError () {return iConnError;}

        /**

        * Progresive download "Play" is available

        * return: Connection Error .

        */

		virtual void PdPlayAvailable();

		/**

        * Inform DownloadMgrClntSrv about updated media info

        * return: Connection Error .

        */

		virtual void UpdateMediaInfoL();

        /**

        * SetActive Download

        */

        virtual void SetActiveDownload( );

		/**

        * Inform DownloadMgrClntSrv about updated track

        * return: Connection Error .

        */

		virtual void UpdateTrackInfoL();

        /**

        * Displays Info message "Waiting for license" 

        */

        virtual void WaitForLicenseL();

        /**

        * To indicate the download is paused

        */

        inline virtual void DownloadPaused() {iDownloadPaused = ETrue;}

        /**

        * To indicate the download is resumed and ready for PD

        */

        inline virtual void DownloadResumedPdAvailable()

            {

        	iObserver.CodEventL( iProxy, MCodDownloadObserver::EResumed );

            }

        /**

        * To update the server about whether or not download is pausable

        */

        virtual void UpdatePausable( TBool aPausable );

        /**

        * To update the server about next media object being downloaded.

        */        

        virtual void MediaObjectNameChanged();

        /**

        * To update the server about content type.

        */

        virtual void ContentTypeChanged();

        /**

        * 

        * To handle PostResponseUrlL as part of metering response

        * @param aPrUrl: The PostResponseURL

        * @return void

        *  

        */