/*

* Copyright (c) 2008 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:  Used by sessions for handling data related requests

 *

*/

#ifndef C_CPDATA_MANAGER_H

#define C_CPDATA_MANAGER_H

#include <e32base.h>

#include "cpstorage.h"

// FORWARD DECLARATIONS

#ifdef CONTENT_PUBLISHER_DEBUG

class CCPDebug;

#endif

class CLiwMap;

class CCPLiwMap;

class CCpStorage;

class CCPServerSession;

class CCPNotificationHandler;

class TLiwVariant;

/**

 *  Content publisher data manager.

 *

 *  Used to add, modify and remove data and actions.

 *  @since S60 v5.0

 */

class CCPDataManager : public CBase, MCPChangeNotifier

    {

public:

    // exported

    /**

     * C++ destructor

     */

    ~CCPDataManager();

    /**

     * Two-phased constructor.

     */

    static CCPDataManager* NewL( TBool aTBool = EFalse );

    /**

     * Two-phased constructor.

     */

    static CCPDataManager* NewLC( TBool aTBool = EFalse );

    /**

     * Add a new data to database

     *

     * @param aData Data to be added.

     * @return Id of a newly created data item

     */

    TUint AddDataL( CCPLiwMap& aMap );

    /**

     * Data is not added to database. Only notification is send to observers.

     *

     * @param aData Data to be added.

     * @return Id of a newly created data item

     */

    void AddNonPersistentDataL( const CCPLiwMap* aMap );

    /**

     * Fetches data from database

     * @param aInParamList filter and sorting criteria

     * @param aOutParamList results

     */

    void GetListL( const CCPLiwMap& aMa, CLiwGenericParamList& aOutParamList );

    /**

     * Fetches action from database

     * @param aInParamList filter and sorting criteria

     * @param aOutParamList results

     * @param aNotificationList change info list (for notifications)

     * @return KErrNotFound if data was not found

     */

    TInt GetActionL( const CCPLiwMap& aMa,

        CLiwGenericParamList& aOutParamList, 

        CLiwDefaultList* aNotificationList = NULL );

    /**

     * Fetches all activated publishers 

     * @param aInParamList filter and sorting criteria

     * @param aOutParamList results

     */

    void GetActivePublishersL( CLiwGenericParamList* aResultList );

    /**

     * Removes data from database

     * @param aInParamList filter criteria

     */

    void RemoveDataL( const CCPLiwMap& aMa );

    /**

     * Adds observer to database

     * @param new observer

     */

    void AddObserverL( CCPNotificationHandler* aNotificationHandler );

    /**

     * Removes observer from database

     * @param aNotificationHandler observer to remove

     */

    void RemoveObserver( CCPNotificationHandler* aNotificationHandler );

    // from MCPChangeNotifier

    /**

     * @param Map containing change information

     * @return 

     */

    void HandleChangeL( CLiwDefaultList* aListOfMaps );

    /**

     * Close database 

     * @return 

     */

    void CloseDatabase();

    /**

     * Open database 

     * @return 

     */

    void OpenDatabaseL();

private:

    // methods

    /**

     * Standard C++ constructor.

     */

    CCPDataManager();

    /**

     * Standard 2nd phase constructor.

     */

    void ConstructL( TBool aTBool );

    /**

     * Fetches action bound to provided trigger.

     *

     * @param aOutParamList of all actions

     * @param aMap for found action

     * @param aTrigger

     */

    void ExtractTriggerL( CLiwGenericParamList& aOutParamList,

        const CLiwDefaultMap* aMap, const TDesC8& aTrigger );

    /**

     * Sends notifications to observers stored in iNotificationsArray

     *

     * @param List of change information

     * @param index od data item

     */

    void SendNotificationL( CLiwDefaultList* aListOfMaps, TInt aIndex );

    /**

     * Exctracts action from input parameters

     *

     * @param aParam for data

     * @param aAction for action

     */

    void ExtractActionL( const TLiwGenericParam* aParam, RBuf8& aAction );

    /**

     * Fills aOutParamList with parameters for action.

     *

     * @param aOutParamList parsed list of items

     * @param aParamList list of items from data base

     * @param aActionTrigger action trigger

     */

    void FillActionParamListL(

    		CLiwGenericParamList & aOutParamList, 

    		const TLiwGenericParam* aParam,

			RBuf8 & aActionTrigger);

     /**

     * Creates map for GetList request - publisher, content_type

     * and content_id are copied from aMap to returned map

     * @param aMap - input map

     * @return input map for GetList request

     */

    CCPLiwMap* CreateMapForGetlistLC( const CCPLiwMap& aMap );

     /**

     * Gets Flag for specified item from DB and returns activate

     * info

     * @param aMap - input map

     * @return activate flag

     */

    TBool GetActivateInfoL( const CCPLiwMap* aMap );

    /**

    * Builds change info list based on query result to database

    * @param aMap - map containing parameters needed to build change info list

    * @param aParam - param from getlist result 

    * @param aChangeInfoList - output list containing change info list sent

    * as notification

    */

    void BuildChangeInfoL( 

    		const CCPLiwMap* aMap, 

    		const TLiwGenericParam* aParam,	

    		CLiwDefaultList* aChangeInfoList );

    /**

    * Builds change info list when query to database returned nothing

    * @param aMap - map containing parameters needed to build change info list

    * @param aChangeInfoList - output list containing change info list sent

    * as notification

    */

    void BuildDefaultChangeInfoL( 

    		const CCPLiwMap* aMap, 

    		CLiwDefaultList* aChangeInfoList );

    /**

    * Builds change info list when query to database returned nothing

    * @param aMap - map containing parameters needed to build change info list

    * @param aChangeInfoList - output list containing change info list sent

    * as notification

    */

    void BuildChangeInfoForAddL(

            const CCPLiwMap* aMap,

            CLiwDefaultList* aChangeInfoList );

    /**

    * Copies variant from in to out map if entry with provided key exists

    * @param aKey a key

    * @param aInMap input map

    * @param aOutMap output map

    */    

    void CopyVariantL(const TDesC8& aKey, const CLiwMap* aInMap, 

    		CLiwDefaultMap* aOutMap );

    /**

    * Copies variant from in map for key KActionTrigger to out map with key KActionTrigger16 

    * and formated type(from TDesC8 to TDesC) 

    * @param aInMap input map

    * @param aOutMap output map

    */    

    void CopyActionTrigger16L( const CLiwMap* aInMap, 

    		CLiwDefaultMap* aOutMap );

private:

    // data

    /*

     * Storage database

     * Own.

     */

    CCpStorage* iStorage;

    /*

     * Array of registered notification handlers.

     * Own.

     */

    RPointerArray<CCPNotificationHandler> iNotificationsArray;

#ifdef CONTENT_PUBLISHER_DEBUG

    CCPDebug* iDebug;

#endif

    };

#endif // C_CPDATA_MANAGER_H

// end of file