/**

 * 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:

 * Nalina Hariharan

 * 

 * Description:

 * The Plugin that fetches contacts from the logged in user's flickr account

 *

 */

// Include files

#include <QtPlugin>

#include <QCryptographicHash>

#include <QTextStream>

#include <QFile>

#include <QMap>

#include <QListIterator>

#include <QDebug>

#include <QSettings>

#include <smfpluginutil.h>

#ifdef SMF_XMLPARSING

#include <QXmlStreamReader>

#endif

#include "flickrcontactfetcherplugin.h"

/**

 * Destructor

 */

FlickrContactFetcherPlugin::~FlickrContactFetcherPlugin( )

	{

	if(m_provider)

		delete m_provider;

	}

/**

 * 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 FlickrContactFetcherPlugin::fetchKeys( QString &aApiKey, 

		QString &aApiSecret, 

		QString &aAuthToken )

	{

	qDebug()<<"Inside FlickrContactFetcherPlugin::fetchKeys()";

	qDebug()<<"Reg Token = "<<m_provider->m_smfRegToken;

	qDebug()<<"Expiry Date as int = "<<m_provider->m_validity.toTime_t();

	SmfAuthParams keys;

	SmfPluginUtil util;

	util.getAuthKeys(keys, m_provider->m_smfRegToken, 

			m_provider->m_validity, m_provider->m_pluginId);

	qDebug()<<"Number of key-value pairs = "<<keys.count();

    QByteArray keyName;

    keyName.append("ApiKey");

	aApiKey.append(keys.value(keyName));

    keyName.clear();

    keyName.append("ApiSecret");

	aApiSecret.append(keys.value(keyName));

	keyName.clear();

    keyName.append("AuthToken");

    aAuthToken.append(keys.value(keyName));

	qDebug()<<"Api Key = "<<aApiKey;

	qDebug()<<"Api Secret = "<<aApiSecret;

	qDebug()<<"Auth Token = "<<aAuthToken;

	}

/**

 * Method to get the list of friends

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

 * @param aPageNum The page to be extracted

 * @param aItemsPerPage Number of items per page

 * @return SmfPluginError Plugin error if any, else SmfPluginErrNone

 */

SmfPluginError FlickrContactFetcherPlugin::friends( SmfPluginRequestData &aRequest,

		const int aPageNum, 

		const int aItemsPerPage )

	{

	qDebug()<<"Inside FlickrContactFetcherPlugin::friends()";

	SmfPluginError error = SmfPluginErrInvalidArguments;

	// invalid arguments

	if( aPageNum < 0 || aItemsPerPage < 0 )

		{

		qDebug()<<"Invalid arguments";

		return error;

		}

	qDebug()<<"Valid arguments";

	// Get the key sets from SMF Plugin Utility class.

	QString apiKey;

	QString apiSecret;

	QString authToken;

	fetchKeys(apiKey, apiSecret, authToken );

	// Create the API signature string

	QString baseString;

	baseString.append(apiSecret);

	baseString.append("api_key"+apiKey);

	baseString.append("auth_token"+authToken);

	baseString.append("filterfriends");

#ifdef SMF_XMLPARSING

	baseString.append("formatxml");

#else

	baseString.append("formatjson");

#endif

	baseString.append("methodflickr.contacts.getList");

	baseString.append("page"+QString::number(aPageNum));

	baseString.append("per_page"+QString::number(aItemsPerPage));

	// Create the url

	QUrl url("http://api.flickr.com/services/rest/?");

	url.addQueryItem("api_key", apiKey);

	url.addQueryItem("auth_token", authToken);

	url.addQueryItem("filter", "friends");

#ifdef SMF_XMLPARSING

	url.addQueryItem("format", "x");

#else

	url.addQueryItem("format", "json");

#endif

	url.addQueryItem("method", "flickr.contacts.getList");

	url.addQueryItem("page", QString::number(aPageNum));

	url.addQueryItem("per_page", QString::number(aItemsPerPage));

	url.addQueryItem("api_sig", generateSignature(baseString));

	// Create the request, set the url

	aRequest.iNetworkRequest.setUrl(url);

	aRequest.iRequestType = SmfContactGetFriends;

	aRequest.iPostData = NULL;

	aRequest.iHttpOperationType = QNetworkAccessManager::GetOperation;

	error = SmfPluginErrNone;

	qDebug()<<"Url string is : "<<aRequest.iNetworkRequest.url().toString();

	return error; 

	}

/**

 * 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 FlickrContactFetcherPlugin::generateSignature(const QString aBaseString)

	{

	qDebug()<<"Inside FlickrContactFetcherPlugin::generateSignature()";

	// Create md5 hash of the signature string

    QByteArray byteArray;

    byteArray.insert(0, aBaseString.toAscii());

    QByteArray md5Hash = QCryptographicHash::hash(byteArray,QCryptographicHash::Md5 ).toHex();

    QString returnString (md5Hash);

    qDebug()<<"generated signature = "<<QString(returnString);

    return returnString;

	}

/**

 * Method to get the list of followers

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

 * @param aPageNum The page to be extracted

 * @param aItemsPerPage Number of items per page

 * @return SmfPluginError Plugin error if any, else SmfPluginErrNone

 */

SmfPluginError FlickrContactFetcherPlugin::followers( SmfPluginRequestData &aRequest,

		const int aPageNum , 

		const int aItemsPerPage  )

	{

	Q_UNUSED(aRequest)

	Q_UNUSED(aPageNum)

	Q_UNUSED(aItemsPerPage)

	qDebug()<<"Inside FlickrContactFetcherPlugin::followers()";

	return SmfPluginErrServiceNotSupported; 

	}

/**

 * Method to search for a contact

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

 * @param aContact contact to be searched

 * @param aPageNum The page to be extracted

 * @param aItemsPerPage Number of items per page

 * @return SmfPluginError Plugin error if any, else SmfPluginErrNone

 */

SmfPluginError FlickrContactFetcherPlugin::search( SmfPluginRequestData &aRequest,

		const SmfContact &aContact,

		const int aPageNum , 

		const int aItemsPerPage  )

	{

	Q_UNUSED(aRequest)

	Q_UNUSED(aContact)

	Q_UNUSED(aPageNum)

	Q_UNUSED(aItemsPerPage)

	qDebug()<<"Inside FlickrContactFetcherPlugin::search()";

	return SmfPluginErrServiceNotSupported; 

	}

/**

 * Method to search for contacts (friends) who are near the user.

 * Proximity defines accuracy level

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

 * @param aLocation The location search criteria

 * @param aProximity location search boundary

 * @param aPageNum The page to be extracted

 * @param aItemsPerPage Number of items per page

 * @return SmfPluginError Plugin error if any, else SmfPluginErrNone

 */

SmfPluginError FlickrContactFetcherPlugin::searchNear( SmfPluginRequestData &aRequest,

		const SmfLocation &aLocation,

		const SmfLocationSearchBoundary &aProximity,

		const int aPageNum , 

		const int aItemsPerPage  )

	{

	Q_UNUSED(aRequest)

	Q_UNUSED(aLocation)

	Q_UNUSED(aProximity)

	Q_UNUSED(aPageNum)

	Q_UNUSED(aItemsPerPage)

	qDebug()<<"Inside FlickrContactFetcherPlugin::searchNear()";

	return SmfPluginErrServiceNotSupported; 

	}

/**

 * Method to get the list of groups

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

 * @param aPageNum The page to be extracted

 * @param aItemsPerPage Number of items per page

 * @return SmfPluginError Plugin error if any, else SmfPluginErrNone

 */

SmfPluginError FlickrContactFetcherPlugin::groups( SmfPluginRequestData &aRequest,

		const int aPageNum , 

		const int aItemsPerPage  )

	{

	qDebug()<<"Inside FlickrContactFetcherPlugin::groups()";

	}

/**

 * Method to search for a contact in a group

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

 * @param aGroup the group in which to search

 * @param aPageNum The page to be extracted

 * @param aItemsPerPage Number of items per page

 * @return SmfPluginError Plugin error if any, else SmfPluginErrNone

 */

SmfPluginError FlickrContactFetcherPlugin::searchInGroup( SmfPluginRequestData &aRequest,

		const SmfGroup &aGroup,

		const int aPageNum , 

		const int aItemsPerPage  )

	{

	Q_UNUSED(aRequest)

	Q_UNUSED(aGroup)

	Q_UNUSED(aPageNum)

	Q_UNUSED(aItemsPerPage)

	qDebug()<<"Inside FlickrContactFetcherPlugin::searchInGroup()";

	return SmfPluginErrServiceNotSupported;