/**

 * Copyright (c) 2010 Sasken Communication Technologies Ltd.

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of the "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:

 * Chandradeep Gandhi, Sasken Communication Technologies Ltd - Initial contribution

 *

 * Contributors:

 * Sangeetha Prasad, Nalina Hariharan

 * 

 * Description:

 * The Plugin that fetches gallery related items from the logged in user's flickr account

 *

 */

#ifndef FLICKRGALLERYPLUGIN_H_

#define FLICKRGALLERYPLUGIN_H_

// Include files

#include <QDateTime>

#include <smfgalleryplugin.h>

#include <smfcontact.h>

// Forward declarations

class FlickrProviderBase;

class QVariant;

/**

 * The Plugin that fetches gallery related items from the logged 

 * in user's flickr account

 */

class FlickrGalleryPlugin : public QObject, public SmfGalleryPlugin

{

	Q_OBJECT

	Q_INTERFACES( SmfGalleryPlugin SmfPluginBase )

public:

	/**

	 * Destructor

	 */

	virtual ~FlickrGalleryPlugin();

public: // From FlickrGalleryPlugin

	/**

	 * Method to get a list of albums

	 * @param aRequest [out] The request data to be sent to network

	 * @param aNames The subject or any keywords to be used to filter albums with that name

	 * @param aUser The user whose albums are requested

	 * @param aPageNum The page to be extracted

	 * @param aItemsPerPage Number of items per page

	 * @return SmfPluginError Plugin error if any, else SmfPluginErrNone

	 */

	SmfPluginError albums( SmfPluginRequestData &aRequest, 

			const QStringList &aNames, 

			const SmfContact *aUser, 

			const int aPageNum = SMF_FIRST_PAGE,

			const int aItemsPerPage = SMF_ITEMS_PER_PAGE );

	/**

	 * Method to get a list of pictures

	 * @param aRequest [out] The request data to be sent to network

	 * @param aAlbums The album(s) whose pictures are being requested

	 * @param aPageNum The page to be extracted

	 * @param aItemsPerPage Number of items per page

	 * @return SmfPluginError Plugin error if any, else SmfPluginErrNone

	 */

	SmfPluginError pictures( SmfPluginRequestData &aRequest, 

			const SmfPictureAlbumList &aAlbums, 

			const int aPageNum = SMF_FIRST_PAGE, 

			const int aItemsPerPage = SMF_ITEMS_PER_PAGE );

	 /**

	 * Method to get a description

	 * @param aRequest [out] The request data to be sent to network

	 * @param aImage The image abot which the description is required

	 * @return SmfPluginError Plugin error if any, else SmfPluginErrNone

	 */

	SmfPluginError description( SmfPluginRequestData &aRequest,

			const SmfPicture &aImage );

	/**

	 * Method to upload a picture

	 * @param aRequest [out] The request data to be sent to network

	 * @param aImage The image to be uploaded

	 * @param aAlbum the optional destination album name

	 * @return SmfPluginError Plugin error if any, else SmfPluginErrNone

	 */

	SmfPluginError upload( SmfPluginRequestData &aRequest,

			const SmfPicture &aImage,

			const SmfPictureAlbum* aAlbum = NULL );

	/**

	 * Method to upload a list of pictures

	 * @param aRequest [out] The request data to be sent to network

	 * @param aImages The list of images to be uploaded

	 * @param aAlbum the optional destination album name

	 * @return SmfPluginError Plugin error if any, else SmfPluginErrNone

	 */

	SmfPluginError upload( SmfPluginRequestData &aRequest,

			const QList<SmfPicture> &aImages, 

			const SmfPictureAlbum* aAlbum = NULL );

  /**

	* Method to post comment on a picture is available

	* @param aRequest [out] The request data to be sent to network

	* @param aImage The image on which comment is to be posted

	* @param aComment The comment to be posted

	* @return SmfPluginError Plugin error if any, else SmfPluginErrNone

	*/

	SmfPluginError postComment( SmfPluginRequestData &aRequest,

			 const SmfPicture &aImage, 

			 const SmfComment &aComment );

	/**

	 * Customised method for SMFGalleryPlugin interface

	 * @param aRequest [out] The request data to be sent to network

	 * @param aOperation The operation type (should be known between 

	 * the client interface and the plugin)

	 * @param aData The data required to form the request (The type 

	 * of data should be known between client and the plugin)

	 * @return SmfPluginError Plugin error if any, else SmfPluginErrNone

	 */

	SmfPluginError customRequest( SmfPluginRequestData &aRequest, 

			const int &aOperation, 

			QByteArray *aData );

public: // From SmfPluginBase

	/**

	 * The first method to be called in the plugin that implements this interface.

	 * If this method is not called, plugin may not behave as expected.

	 */

	void initialize( );

	/**

	 * Method to get the provider information

	 * @return Instance of SmfProviderBase

	 */

	SmfProviderBase* getProviderInfo( );

	/**

	 * Method to get the result for a network request.

	 * @param aOperation The type of operation to be requested

	 * @param aTransportResult The result of transport operation

	 * @param aResponse The QByteArray instance containing the network response.

	 * The plugins should delete this instance once they have read the 

	 * data from it.

	 * @param aResult [out] An output parameter to the plugin manager.If the 

	 * return value is SmfSendRequestAgain, QVariant will be of type 

	 * SmfPluginRequestData.

	 * For SmfGalleryPlugin: If last operation was albums, aResult will be of 

	 * type QList<SmfPictureAlbum>. If the last operation was pictures(), aResult 

	 * will be of type QList<SmfPicture>. If last operation was description(), 

	 * aResult will be of type QString. If last operation was upload() or 

	 * postComment(), aResult will be of type bool.

	 * @param aRetType [out] SmfPluginRetType

	 * @param aPageResult [out] The SmfResultPage structure variable

	 */

	SmfPluginError responseAvailable( 

			const SmfRequestTypeID aOperation,

			const SmfTransportResult &aTransportResult, 

			QByteArray *aResponse, 

			QVariant* aResult, 

			SmfPluginRetType &aRetType,

			SmfResultPage &aPageResult );

	/**

	 * Method to construct individual fields for photo upload

	 * @param aName The name argument

	 * @param aContent The content of this field

	 * @param aBoundary The boundary string (need to be unique in the payload data)

	 * @param aFilename The filename if for photo field 

	 * @return The field data constructed by this method

	 */

	QByteArray constructField( const QString &aName, 

			const QString &aContent, 

			const QByteArray &aBoundary, 

			const QString &aFilename = QString() );

private:

	/**

	 * Method called by plugins to generate a signature string from a base string

	 * @param aBaseString The base string

	 * @return The md5 hash of the base string

	 */

	QString generateSignature( const QString aBaseString );

	/**

	 * Method to interpret the key sets obtained from credential manager 

	 * @param aApiKey [out] The api key

	 * @param aApiSecret [out] The api secret

	 * @param aAuthToken [out] The auth token provided by Flickr

	 */

	void fetchKeys(	QString &aApiKey, 

			QString &aApiSecret, 

			QString &aAuthToken );

private:

	FlickrProviderBase *m_provider;

	};

/**

 * The Plugin class that implements SmfProviderBase for this flickr plugin

 */

class FlickrProviderBase : public QObject, public SmfProviderBase

	{

	Q_OBJECT

	Q_INTERFACES( SmfProviderBase )

public:

	virtual ~FlickrProviderBase( );

	/**

	 * Method to get the Localisable name of the service.

	 * @return The Localisable name of the service.

	 */

	QString serviceName( ) const;

	/**

	 * Method to get the Logo of the service

	 * @return The Logo of the service

	 */

	QImage serviceIcon( ) const;

	/**

	 * Method to get the Readable service description

	 * @return The Readable service description

	 */

	QString description( ) const;

	/**

	 * Method to get the Website of the service

	 * @return The Website of the service

	 */

	QUrl serviceUrl( ) const;

	/**

	 * Method to get the URL of the Application providing this service

	 * @return The URL of the Application providing this service

	 */

	QUrl applicationUrl( ) const;

	/**

	 * Method to get the Icon of the application

	 * @return The Icon of the application

	 */

	QImage applicationIcon( ) const;

	/**

	* Method to get the list of interfaces that this provider support

	* @return List of supported Interafces

	*/

	QList<QString> supportedInterfaces( ) const;

	/**

	* Method to get the list of languages supported by this service provider

	* @return a QStringList of languages supported by this service 

	* provider in 2 letter ISO 639-1 format.

	*/

	QStringList supportedLanguages( ) const;

	/**

	 * Method to get the Plugin specific ID

	 * @return The Plugin specific ID

	 */

	QString pluginId( ) const;

	/**

	 * Method to get the ID of the authentication application 

	 * for this service

	 * @param aProgram The authentication application name

	 * @param aArguments List of arguments required for authentication app

	 * @param aMode Strting mode for authentication application

	 * @return The ID of the authentication application 

	 */

	QString authenticationApp( QString &aProgram, QStringList & aArguments, 

			QIODevice::OpenModeFlag aMode = QIODevice::ReadWrite ) const;

	/**

	 * Method to get the unique registration ID provided by the 

	 * Smf for authorised plugins

	 * @return The unique registration ID/token provided by the Smf for 

	 * authorised plugins

	 */

	QString smfRegistrationId( ) const;

private:

	friend class FlickrGalleryPlugin;

	void initialize();

	QString m_serviceName;

	QImage m_serviceIcon;

	QString m_description;

	QUrl m_serviceUrl;

	QUrl m_applicationUrl;

	QImage m_applicationIcon;

	QString m_pluginId;

	QString m_authAppId;

	QString m_smfRegToken;

	QList<QString> m_supportedInterfaces;

	QStringList m_supportedLangs;

	QDateTime m_validity;

	};

#endif /* FLICKRGALLERYPLUGIN_H_ */