/*

* 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:  

*

*/

#ifndef CONVERSATIONS_ENGINE_PRIVATE_H

#define CONVERSATIONS_ENGINE_PRIVATE_H

// SYSTEM INCLUDES

#include <ccsrequesthandler.h>

#include <mcsresultsobserver.h>

#include <msvstd.h>

// USER INCLUDES

// FORWARD DECLARATIONS

class CCsClientConversation;

class ConversationsSummaryModel;

class ConversationsModel;

class ConversationMsgStoreHandler;

class ConversationsChangeHandler;

class ConversationsListChangeHandler;

/**

 *  This Class reads the initial conversation list and conversations.

 *

 *  @code

 *

 *  @endcode

 *  @since S60 v10.1

 */

class ConversationsEnginePrivate :public CBase, public MCsResultsObserver

    {

public:

    /**

     * Default constructor.

     */

    explicit ConversationsEnginePrivate(

        ConversationMsgStoreHandler* conversationMsgStoreHandler,

        ConversationsSummaryModel* conversationsSummaryModel,

        ConversationsModel* conversationsModel

        );

    /**

     * Destructor.

     */

    virtual ~ConversationsEnginePrivate();

    /**

     * Adds ConversationListChange Observer

     */    

    void registerForConversationListUpdatesL();

    /**

     * getConversationsL

     * Initiates a call to conversation server to get all the

     * conversations for a conversation entry.

     * 

     * @param aConversationId

     */

    void getConversationsL( TInt aConversationId);

    /**

     * Delete all conversations.

     * @param conversationId, conversationId

     */

    void deleteConversationL(TInt aConversationId);

    /**

     * Delete all messages.

     * @param msgIdList, message list.

     */ 

    void deleteMessages(RArray<TInt>& aIdArray);

    /**

     * Delete all draft messages.

     */

    void deleteAllDraftMessagesL();

    /**

     * Marks the unread conversations as read

     * @param conversationId, conversationId

     */

    void markConversationReadL(TInt aConversationId);

    /**

     * Mark messages as read.

     * @param msgIdList, message list.

     */

    void markMessagesReadL(RArray<TInt>& aIdArray);

    /**

     * Get current conversation id.

     */  

    TInt getConversationCurrentId();

    /**

     * Clear all conversations

     */

    void clearConversationsL();

    /**

     *  Adds ConversationChange Observer

     */

    void registerForConversationUpdatesL();

    /**

     *  Remove the CV notifs temporary for some time

     *  does not destroy the model as such

     */

    void deRegisterCVUpdatesTemporary();

    /**

     *  Register again after temporary de-register

     * just need to set the new conversation id

     */

    void registerAgainForConversationUpdatesL(int newConversationId);

    /**

     *  Fetch ConversationId from contactId

     *  @param contactId , contactId

     *  @return conversationId

     */

    TInt getConversationIdFromContactIdL(TInt contactId);    

    /**

     *  Fetch ConversationId from contact address

     *  @param contactAddress , contact Address

     *  @return conversationId

     */

    TInt getConversationIdFromAddressL(TDesC& contactAddress);

    /**

     *  Get the latest conversation from the conversation cache by Id

     *  @param aConversationId for conversation is required

     */

    CCsClientConversation* getConversationFromConversationIdL(TInt aConversationId);

    /**

     *  Starts fetching rest of the conversations

     */

    void fetchMoreConversations();

    /**

     *  Starts fetching remaing conversations

     *  @param aCount - count of conversation entries

     */

    void fetchRemainingConversations(TInt& aCount);

    /**

     *  Resend a failed message

	 * @param messageId TMsvId The msv id of the entry to resend

	 * @return bool true if success

     */

    bool resendMessage(TMsvId messageId);

    /**

     * Download a specified message

     * @param aId TMsvId of the message 

     * @return KErrNone if Download request is successful, 

     *         KErrNotFound if settings are not available,

     *         KErrGeneral for other cases

     */

    TInt downloadMessage(TMsvId messageId);

    /**

     * Query if the download operation be performed for

     * a message notification entry

     * @param aId, message notification id

     * @return true if download operation is possible

     */

    bool downloadOperationSupported(TMsvId messageId);

public: // From MCsResultsObserver

    /**

     * ConversationList

     * This is for handling GetEntryList results asynchronusly

     * from the server.

     * 

     * @param aClientConversationList List of client conversations

     * returned by server.

     */

    void ConversationList(

            RPointerArray<CCsClientConversation>& aClientConversationList);

    /**

     * Conversations

     * This is for handling GetConversation results asynchronusly

     * from the server.

     * 

     * @param aConversationEntryList List of conversation entries

     * returned by server.

     */

    void Conversations(

            RPointerArray<CCsConversationEntry>& aConversationEntryList,

            TInt& totalCount);

private:

    /**

     * Initializes the ConversationReader class.

     */

    void initL();

private: // data

    /**

     * mServer

     * Ptr to conversation server.

     */

    CCSRequestHandler* mServer;

    /**

     * mClientConv

     * Current Client Conversation selected.

     * Own.

     */

    CCsClientConversation* mClientConv;

    /**

     * MsgStore Handler

     * Not Owned

     */        

    ConversationMsgStoreHandler* mConversationMsgStoreHandler;

    /**

     * Conversations Summary Model

     * Not Owned

     */        

    ConversationsSummaryModel *mConversationsSummaryModel;

    /**

     * Conversations Model

     * Not Owned

     */    

    ConversationsModel *mConversationsModel;    

    /**

     * Conversations Change Handler

     * Owned

     */

    ConversationsChangeHandler *mConvChangeHandler;

    /**

     * Conversations List Change Handler

     * Owned

     */

    ConversationsListChangeHandler *mConvListChangeHandler;

    };

#endif // CONVERSATIONS_ENGINE_PRIVATE_H

//EOF