/*

* Copyright (c) 2009 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:  A class responsible for geotagging of media files in background.

*

*/

#ifndef C_CINTERNALGEOTAGGER_H

#define C_CINTERNALGEOTAGGER_H

#include <e32base.h>

#include <e32property.h>

#include <lbs.h>

#include <locationdatatype.h>

#include <geotagger.h>

#include "mdccommon.h"

#include "mdesession.h"

#include "mdenamespacedef.h"

#include "mdeobjectdef.h"

#include "mdepropertydef.h"

#include "mderelation.h"

#include "mdequery.h"

#ifdef LOC_GEOTAGGING_CELLID

#include "cgeoconverter.h"

#endif

class CReverseGeoCoderPlugin;

/**

 *  GeoTagger converts a given cell ID(CGI Info) to geo-coordinates.

 *  Does reverse geocoding to get country and city name.

 *  Creates country and city tag for image/video files.  

 *  @since S60 9.2

 */

class CInternalGeoTagger : public CGeoTagger,

                   public MMdESessionObserver,

#ifdef LOC_GEOTAGGING_CELLID	

                   ,public MGeoConverterObserver

#endif				   

    {

public:  

    /**

     * 2-phased constructor.

     * @param aMdeSession An instance of the CMdESession

     * @param aObserver   The observer that is to be notified when geotagging is over

     */

    IMPORT_C static CInternalGeoTagger* NewL( CMdESession* aMdeSession,

        MGeoTaggerObserver* aObserver );

    /**

      * C++ destructor.

      */    

    IMPORT_C virtual ~CInternalGeoTagger();

public:    //exported API

    // CGeoTagger

     /**

       * Harvests location tags.

       * @param aObserver, observer for geotagging.

       * @return None.

       */    

    virtual void CreateGeoTagsL( const TConnectionOption = EInteractive  );

     /**

       * Checks if there is any untagged photos with location info and tags them.

       * @param aTagInProgress, boolean value to indicate if geotagging is in progress.

       * @return None.

       */

    virtual void PendingGeoTagsL( TBool aTagInProgress );

public:   //observer methods

    // From MMdEQueryObserver

    /**

      * @param aQuery the query type

      * @param aFirstNewItemIndex The new item index

      * @param aNewItemCount   The new item count

      */

      void HandleQueryNewResults(CMdEQuery& aQuery, TInt aFirstNewItemIndex, 

              TInt aNewItemCount);

    /**

      * This method is called on completion of a query

      * @param aQuery the query type

      * @param aError  Error if any

      */    

      void HandleQueryCompleted(CMdEQuery& aQuery, TInt aError);

    //MReverseGeocodeObserver

    /**

      * This method is called when reverse geocoding is completed

      *@param  aErrorcode  Error if any

      *@param aAddressInfo   the reverse geocoded address     

      */

    void ReverseGeocodeComplete( TInt& aErrorcode, MAddressInfo& aAddressInfo );

    /*

    * Get registrer network country code

    *

    * @return current register n/w info

    */

    RMobilePhone::TMobilePhoneNetworkInfoV2& GetCurrentRegisterNw();

    /*

    * UE is registered to home network?

    *

    * @return ETrue if UE is registered at home network else EFalse

    */

    TBool IsRegisteredAtHomeNetwork();

    /*

    * Get home network country code

    * @param aHomeNwInfoAvailableFlag ETrue if home n/w info available else EFalse

    * @return user home n/w info

    */

    const RMobilePhone::TMobilePhoneNetworkInfoV1& 

        GetHomeNetworkInfo(TBool& aHomeNwInfoAvailableFlag);

    // From MMdESessionObserver

    /** 

      * Handles session opening

      *@param  aSession  A reference of the CMdESession

      *@param aError     error if any

      */    

    void HandleSessionOpened(CMdESession& aSession, TInt aError);

    /**

      * Handles any error in session opening

      *@param  aSession  A reference of the CMdESession

      *@param aError     error if any

      */    

    void HandleSessionError(CMdESession& aSession, TInt aError);

public:     // MGeoConverterObserver

        /**

         * This method is used for notifying completion of geotagging

         * @param aError error code

         * @param aPosition position (lat/lon) for the correcponding n/w info

         */

     void ConversionCompletedL( const TInt aError, TLocality& aPosition );

		/**

		* This method is used to handle the conversion error

		* @param aError the error code

		*/

	 void HandleConversionError(TInt aError);

private:    

    /**

     * C++ constructor.

     * @param aMdeSession An instance of the CMdESession

     * @param aObserver   The observer that is to be notified when geotagging is over     

     */  

    CInternalGeoTagger( CMdESession* aMdeSession, MGeoTaggerObserver* aObserver );

    /**

      * 2nd phase constructor.

     */

    void ConstructL();

    /**

      * Get all relation objects associated with this location

     * @param aLocID The locationId whose relation is to be fetched

     */

    void GetRelationObjectsL(TItemId aLocID);

    /**

      * get tags for this image

     * @param aImageID The imageIs whose tag is to be fetched

     */ 

    void GetTagsL( TItemId aImageID );

    /**

       * Get location objects, where lat, long not populated.

      */    

    void GetAllLocationsL( );

    /**

       * checks if the session is ready

      * @return ETrue If the session is ready

      */        

    TBool IsSessionReady();

    /**

       * Fetches the location information

      */        

    void GetLocationInfoL();

    /**

       * starts geotagging of objects

      */        

    void StartGeoTaggingL();

    /**

       * Checks if Location atg exists for an object

      * @return ETrue if location tag is found

      */        

    TBool LocationTagExists();

    /**

       * Moves to the next location for reverse geocoding

      */        

    void IterateNextLocation();

    /**

       * @return ETrue if item had valid lat/lon else EFalse

      */        

    TBool GPSInfoExists();

private:

    /**

     * A session to Metadata Engine for creating and manipulating location objects.

     */

    CMdESession* iMdeSession;

    /**

     * This query object is used to find existing locations

     */

    CMdEObjectQuery* iLocationQuery;

    /** @var iRelationQuery. */

    CMdERelationQuery* iRelationQuery;

    CMdERelationQuery* iTagQuery;

    TInt iIndex;

    TBool iSessionReady;  

    MGeoTaggerObserver* iObserver;

    TLocationData iLocationData;

    TItemId iLocationId;

    TConnectionOption iConnectionOption;

    /**

     * An active scheduler wait loop for waiting a session to MdE to open.

     */

    CActiveSchedulerWait* iASW;

    TBool iMdeSessionOwnFlag;

    TBool iTagPendingHandlerFlag;

#ifdef LOC_GEOTAGGING_CELLID	

    /*

       * Geo converter

       */

	CGeoConverter* iGeoConverter;

#endif

    };

#endif // C_CGEOTAGGER_H 

// End of file.