/*

* Copyright (c) 2007 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 __CMSSERVERASYNCCONTACT__

#define __CMSSERVERASYNCCONTACT__

// INCLUDES

#include <e32base.h>

// FORWARD DECLARATIONS

class CPbk2SortOrderManager;

class MPbk2ContactNameFormatter;

class CVPbkBaseContactFieldTypeIterator;

// CONSTANTS

const TInt KDefaultBufferSize           = 12;

/**

 * CCmsServerAsyncContact handles contact asynchronous requests.

 */

NONSHARABLE_CLASS( CCmsServerAsyncContact ) : public CActive

    {

    public:  

        /**

        * Creates an instance of CCmsServerAsyncContact

        *

        * @param aSyncContact Reference to CCmsContact instance

        * @param aCmsServer Reference to CCmsServer instance

        * @return Instance of CCmsServerAsyncContact

        */

        static CCmsServerAsyncContact* NewL( CCmsServerContact& aSyncContact,

                                             CCmsServer& aCmsServer );

        /**

        * Fetches list of enabled fields, i.e. fields with some content

        */

        void FetchEnabledFields();

        /**

        * Fetches contact field

        *

        * @param aField Field to be fetched

        */

        void FetchContactData( CCmsContactFieldItem::TCmsContactField aField );

        /**

        * Retrieves content of all fields belonging to some communication method

        *

        * @param aFieldGroup Communication type

        * @return Array of fields. Ownershpi is transfered.

        */

        CDesCArrayFlat* ContactDataTextLC( CCmsContactFieldItem::TCmsContactFieldGroup aFieldGroup );

        /**

        * Reads contact URI fields

        *

        * @param aResourceId Resource identifying URI fields

        * @return Array with URI fields. Ownership is transfered.

        */

        CDesCArrayFlat* ContactDataUriLC( TInt aResourceId );

        /**

        * Read contact's fields to the array

        *

        * @param aResourceId Fields to be read

        * @param aFieldArray Result array

        */

        void PhonebookDataL( TInt aResourceId, CDesCArrayFlat& aFieldArray );

        /**

        * Reads all the data related to a contact: fields content, defaults,

        *   corresponding xSP contacts

        *

        * @param aResourceId Specifies type of data to read

        * @return Packed contact info. Ownership is transfered

        */

        HBufC* DoGetPhonebookDataLC( TInt aResourceId );

        /**

        * Checks if any IM service is supported

        *

        * @return 0 if not supported and 1 if supported

        */

        TInt FindImAvailabilityL();

        /**

        * Checks if Voip service is supported

        *

        * @param aUri Voip service provider

        * @return ETrue if this service is supported

        */

        TBool IsVoipCapableL( const TDesC& aUri );

        /**

        * Destructor

        */

        ~CCmsServerAsyncContact();

    private:

        // Types of fetch operation

        enum TCmsAsyncOperation

            {

            ENone = 0,

            EFetchEnabledFields,

            EFetchPhonebookBinData,

            EFetchPhonebookTextData,

            EFetchPresenceData,

            EFetchPhonebookUriData,

            EFetchPhonebookDateTimeData

            };

    private:

        /**

        * Default constructor

        * @param aSyncContact Reference to CCmsContact instance

        * @param aCmsServer Reference to CCmsServer instance

        */

        CCmsServerAsyncContact( CCmsServerContact& aSyncContact,

                                CCmsServer& aCmsServer );

        /**

        * Second-phase constructor

        */

        void ConstructL();

        /**

        * Reads contact's first binary field

        *

        * @param aResourcId Field type

        * @return Field content. Ownership is transfered.

        */

        HBufC8* ContactDataBinaryL( TInt aResourceId );

        /**

        * Gets the list of fields with some content

        *

        * @return Packed list of fields. Ownership is transfered.

        */

        HBufC* GetEnabledFieldsLC();

        /**

        * Gets the list of fields with some content

        *

        * @param aBufferIndex Buffer index to insert data

        * @param aDataBuffer Buffer to save the list of fields

        * @param aContact Store contact

        */

        void DoGetEnabledFieldsL( TInt& aBufferIndex, CBufFlat* aDataBuffer, 

                                  const MVPbkStoreContact& aContact );

        /**

        * Gets contact's full name or contact fields with default attributes.

        *

        * @param aResourceId: Specifies type of data to read. 

        * @return Buffer with contact's full name, or fields and default

        *        attrtibutes. Ownership is transfered.

        */

        HBufC* DoGetDataLC( TInt aResourceId );

        /**

        * Reads specified contact fields and default field

        *

        * @param aItemArray Array of contact fields to be filled

        * @param aDefaults Array of defaults to be filled

        * @param aResourceId Field type

        * @param aContact MVPbkStoreContact

        */

        void HandleOneContactL( CDesCArray& aItemArray, CDesCArray& aInfoArray, RArray<TInt>& aDefaults,

                                TInt aResourceId, const MVPbkStoreContact& aContact );

        /**

        * Packs information about contacts' default fields into the buffer

        *

        * @param aItemArray Array of contacts

        * @param aDefaults Array of default fields for the contacts

        * @return Packed info about defaults, ownership is transfered

        */

        HBufC* ConstructStreamBufferL( CDesCArray& aItemArray, CDesCArray& aInfoArray, RArray<TInt>& aDefaults );

        /**

        * Get contact's full name. 

        *

        * @return Contact's full name, ownership is transfered

        */

        HBufC* DoGetFullNameDataLC( );

        /**

        * Checks default attributes of a field.

        *

        * @param aContactField Contact field to seach default attributes for.

        * @return TInt TCmsDefaultAttributeTypes bitmask

        */

        TInt DefaultAttributesL( const MVPbkBaseContactField& aContactField );

        /**

        * Matches VPbk's enum to CMS internal enum.

        *

        * @param aDefaultType VPbk's default type.   

        * @return TCmsDefaultAttributeTypes CMS's default type.

        */

        CCmsContactFieldItem::TCmsDefaultAttributeTypes

            CCmsServerAsyncContact::MatchTypesToInternalEnum(

                TVPbkDefaultType aDefaultType );

        /**

        * Reads all E-mail, VoIP and IMPP fields 

        *

        * @return Fields array, ownership is transfered

        */

        CDesCArrayFlat* ContactInfoArrayLC();

        /**

        * Reads field content to the buffer

        *

        * @param aField Contact field

        * @return Field content, ownership is transfered

        */

        HBufC* ParseContactFieldL( const MVPbkBaseContactField& aField );

        /**

        * Reads all contact fields specified in the resource

        *

        * @param aCount Number of field definitions in the resource array

        * @param aResourceArray Resource array

        * @return Array of fields content, ownership is transfered

        */

        CDesCArrayFlat* FieldsFromArrayLC( TInt aCount, const TInt aResourceArray[] );

        /**

        * Gets all fields content and adds them to the field array

        * 

        * @param aFieldArray Field array to keep all fields content

        * @param aFieldIterator Field iterator to go through all fields

        */

        void GetOneFieldL( CDesCArrayFlat& aFieldArray,

                           CVPbkBaseContactFieldTypeIterator& aFieldIterator );

        /**

        * Checks if one string is a subset of another string TODO: why so difficult?

        *

        * @param aBuffer Target string

        * @param aItem Search string

        * @return ETrue if found

        */

        TBool HasElement( const TDesC8& aBuffer, const TDesC8& aItem );

        /**

        * Copies field type and field content (separated by KDelimiter)

        * to the buffer.

        * @param aBuffer Buffer to copy data

        * @param aDescriptor Field content

        * @param aFieldType Field type

        */

        void AppendToBufferL( RBuf16& aBuffer, const TDesC& aDescriptor,

                              CCmsContactFieldItem::TCmsContactField aFieldType );

        /**

        * Copies fields from the source to the target string array

        *

        * @param aSource Source array

        * @param aTarget Target array        

        */

        void AppendFieldsL( const CDesCArrayFlat& aSource, CDesCArrayFlat& aTarget );

        /**

        * Maps Cms contact field to field type (binary, uri, text, etc.)

        *

        * @param aCmsField Cms contact field

        * @return Field type

        */

        TCmsAsyncOperation SelectOperationType( TInt aCmsField );

        /**

        * Fetches contact's avatar. First found is returned.

        *

        * @return Avatar (string or file). Ownership is transfered to client.

        */

        HBufC8* FetchAvatarL();

    private:  //From CActive

        void RunL();

        void DoCancel();

        TInt RunError( TInt aError ); 

    private:  //Data

        /// Server contact. Not owned.

        CCmsServerContact&                  iSyncContact;

        /// Type of fetch operation.

        TCmsAsyncOperation                  iAsyncOperation;

        /// Contact manager. Not owned.

        CVPbkContactManager*                iContactManager;

        /// Sort order manager. Owned.

        CPbk2SortOrderManager*              iSortOrderManager;

        /// Name formatter. Owned.

        MPbk2ContactNameFormatter*          iNameFormatter;

        /// Reference to CCmsServer. Not owned.

        CCmsServer&                         iCmsServer;

    };

#endif  //__CMSSERVERASYNCCONTACT__

// End of File