/*

* 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:   

*

*/

#ifndef C_NCD_SUBSCRIPTION_GROUP_H

#define C_NCD_SUBSCRIPTION_GROUP_H

// For streams

#include <s32mem.h>

#include <badesca.h>

#include "catalogscommunicable.h"

#include "ncdstoragedataitem.h"

#include "ncdnodeclassids.h"

#include "ncdprotocoltypes.h"

class CNcdSubscription;

class MNcdPreminetProtocolSubscription;

class CNcdPurchaseOptionImpl;

class CNcdNodeIdentifier;

/**

 *  Server side subscriptiongroup implementation

 *

 *  Server side implementation for purchased or old subscriptions

 *  that have been purchased from one certain dataentity.

 *

 *  @lib ?library

 *  @since S60 ?S60_version *** for example, S60 v3.0

 */

class CNcdSubscriptionGroup : public CCatalogsCommunicable,

                              public MNcdStorageDataItem

{

public:

    static CNcdSubscriptionGroup* NewL();

    static CNcdSubscriptionGroup* NewLC();

    virtual ~CNcdSubscriptionGroup();

    /**

     * This function is called when subscription info should be 

     * constructed from a purchase option. If subscription info

     * of given subscription is already found, it is overwritten. If not,

     * it is created.

     *

     * Notice that this function internalizes only given subscription info

     * to this object. This means that entityid, namespace, server uri or 

     * other possible subscriptions are not read into this object.

     * 

     * @param aData Purchase option used to buy the subscription. Info

     *              for the subscription is read from the purchase option.

     */

    void InternalizeSubscriptionL(

        const CNcdPurchaseOptionImpl& aData );

    /**

     * This function is called when subscription info should be updated

     * or constructed from a protocol element. If subscription info

     * of given subscription is already found, it is updated. If not,

     * it is created.

     *

     * Notice that this function internalizes only given subscription info

     * to this object. This means that entityid, namespace, server uri or 

     * other possible subscriptions are not read into this object.

     * 

     * @param aSubscription The data is set in the protocol parser and can

     *                      be used to update or create subscription info.

     */

    void InternalizeSubscriptionL(

        MNcdPreminetProtocolSubscription& aSubscription );

    /**

     * This function is called when a subscription in the group should

     * be removed.

     *

     * @param aPurchaseOptionImpl The purchase option that identifies

     *                            the subscription.

     * @exception KErrNotFound If there is no such subscription.

     */

    void RemoveSubscriptionL( const TDesC& aPurchaseOptionId );

    /**

     * This function is called to set internal flag of the subscription

     * to inform whether the subscription has been recently updated or

     * not.

     *

     * @param aNewState New state for the recently updated flag.

     * @param aPurchaseOptionId The purchase option id to identify

     *                          the desired subscription.

     *

     * @exception KErrNotFound If there is no such subscription.

     */

    void SetRecentlyUpdatedL( TBool aNewState,

                              const TDesC& aPurchaseOptionId );

    /**

     * This function returns the information whether the subscription

     * has been recently updated or not.

     *

     * @param aPurchaseOptionId The purchase option id to identify

     *                          the desired subscription.

     * @return aNewState New state for the recently updated flag.

     *

     * @exception KErrNotFound If there is no such subscription.

     */    

    TBool RecentlyUpdatedL( const TDesC& aPurchaseOptionId ) const;

    /** 

     * Removes all subscriptions that are not marked as recently updated.

     * Returns boolean value to indicate if something was removed.

     *

     * @return Boolean value to indicate if something was removed. ETrue

     *         means that something was removed.

     */

    TBool RemoveUnmarkedSubscriptionsAndUnmarkL();

    /**

     * When updating/constructing this object after a subscription

     * purchase this function is used to set info of entity where from

     * the subscription was bought.

     * This is not needed when initializing from database.

     * Notice that icon is left as it was. 

     */

    virtual void SetEntityInfoL( const TDesC& aEntityId,

                                 const TDesC& aNamespace,

                                 const TDesC& aServerUri,

                                 const TUid aClientUid );

    /**

     * Gets icon of this group's subscriptions. 

     *

     * @return Icon of this group

     */

    const TDesC8& Icon();

    /**

     * Sets icon for subscriptions of this group. 

     */

    virtual void SetIconL( const TDesC8& aIcon );

    // Getters for entity information

    virtual const TDesC& EntityId() const;

    virtual const TDesC& Namespace() const;

    virtual const TDesC& ServerUri() const;

    CNcdNodeIdentifier& OriginNodeIdentifier() const;

    /** 

     * Returns the subscription which has the given purchase option id.

     *

     * @param aPurchaseOptionId The purchase option id.

     * @exception KErrNotFound If the subscription does not exist.

     */

    CNcdSubscription& SubscriptionIfExistsL(

        const TDesC& aPurchaseOptionId ) const;

    /** 

     * Returns the amount of subscription under the group.

     *

     * @return Amount of subscriptions under the group.

     */

    TInt SubscriptionCount() const;

    /** 

     * Function that checks if this group contains subscriptions

     * whose data is incomplete. (Name or icon missing) If such

     * subscriptions are found appends a copy of corresponding

     * node identifier and purchase option id to the arrays.

     *

     * @param aNodeIds Array for node identifier appending.

     * @param aPurchaseOptionIDs Array for purchase option id appending.

     */    

    void AppendIncompleteSubscriptionIDsL(

        RPointerArray<CNcdNodeIdentifier>& aNodeIds,

        CDesCArrayFlat& aPurchaseOptionIDs );

public: // MNcdStorageDataItem 

    // These functions are used to get the data from and to insert the data

    // into the database using by the given stream.

    /**

     * @see MNcdStorageDataItem::ExternalizeL

     */

    virtual void ExternalizeL( RWriteStream& aStream );

    /**

     * @see MNcdStorageDataItem::InternalizeL

     */

    virtual void InternalizeL( RReadStream& aStream );

public: // CCatalogsCommunicable

    /**

     * @see CCatalogsCommunicable::ReceiveMessage

     */

    virtual void ReceiveMessage( MCatalogsBaseMessage* aMessage,

                                 TInt aFunctionNumber );

    /**

     * @see CCatalogsCommunicable::CounterPartLost

     */

    virtual void CounterPartLost( const MCatalogsSession& aSession );

protected:

    CNcdSubscriptionGroup();

    void ConstructL();

    /**

     * This function is called when the proxy wants to get the

     * purchase option ids of the subscription belonging to this

     * subscription group.

     *

     * @param aMessage Used to send data back to proxy.

     */

    void PurchaseOptionIdsRequestL( MCatalogsBaseMessage& aMessage ) const;

    /**

     * This function is called when the proxy wants to get the

     * data from the serverside. This function calls the

     * InternalizeDataForRequestL which may be overloaded in the

     * child classes

     * @param aMessage Contains data from the proxy and can be used

     * to send data back to proxy

     */

    void InternalizeRequestL( MCatalogsBaseMessage& aMessage ) const;

    /**

     * This function is called when the proxy wants to get the

     * icon data of the subscriptions belonging to this

     * subscription group.

     *

     * @param aMessage Used to send data back to proxy.

     */

    /**

     * This function writes the object data to the stream. The given array

     * contains the purchase option ids of the subscription that are externalized.

     * The stream content will be sent to the proxy that requested the data.

     * Child classes should add their own data after this parent data.

     * @param aStream The data content of this class object will be written

     * into this stream.

     */

    virtual void ExternalizeDataForRequestL(

        MCatalogsSession& aSession,

        const CDesCArray& aPurchaseOptionIds,

        RWriteStream& aStream ) const;

    /**

     * This function is called from the proxy side. When the proxy

     * is deleted.

     * @param aMessage Contains data from the proxy and can be used

     * to send data back to proxy

     */

    void ReleaseRequest( MCatalogsBaseMessage& aMessage ) const;

private:

    // Prevent these two if they are not implemented

    CNcdSubscriptionGroup( const CNcdSubscriptionGroup& aObject );

    CNcdSubscriptionGroup& operator=( const CNcdSubscriptionGroup& aObject );

    /**

     * Function to return index pointing to a subscription

     * with given purchaseoption id.

     *

     * @param aPurchaseOptionId Purchaseoption id to identify subscription.

     * @return Index of purchaseoption.

     * @exception Leave KErrNotFound if not found.

     */

    TInt FindSubscriptionL( const TDesC& aPurchaseOptionId ) const;

    /**

     * Function to return reference to subscription identified

     * by purchase option id.

     * If subscription object is not found it is created.

     *

     * @return Reference to found or created subscription.

     */

    CNcdSubscription& SubscriptionL( const TDesC& aPurchaseOptionId );

    /**

     * Deletes all allocated member variables and sets the pointers to NULL.

     *

     * @since S60 ?S60_version

     */    

    void ResetMemberVariables();

private:

    // The message is set when ReceiveMessage is called. The message

    // is used in the CounterPartLost-function that informs the message

    // if the session has been lost.

    MCatalogsBaseMessage* iMessage;

    // Info related to the dataentity where from the subscriptions

    // contained in this group are bought.

    /**

     * NodeIdentifier to identify the node where from the

     * subscriptions within this group are bought from.

     * Own.

     */

    CNcdNodeIdentifier* iOriginNodeIdentifier;

    /**

     * Icon for subscriptions.

     * Own.

     */  

    HBufC8* iIcon;

    /**

     * Array of subscriptions bought from the dataentity

     */

    RPointerArray<CNcdSubscription> iSubscriptions;

};

#endif // C_NCD_SUBSCRIPTION_GROUP_H