/**

* Copyright (c) 2010 Sasken Communication Technologies Ltd.

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the "{License}"

* which accompanies  this distribution, and is available

* at the URL "{LicenseUrl}".

*

* Initial Contributors:

* Narasimhulu Kavadapu, Sasken Communication Technologies Ltd - Initial contribution

*

* Contributors:

* Siddhartha Chandra, Sasken Communication Technologies Ltd

* Description:

* Login Dialog class of Authentication Application

*/

#include <qdebug.h>

#include "authAppConstants.h"

#include "sessionSP.h"

#include "errorCodes.h"

#include "loginDialog.h"

#include "keys.h"

#include <QNetworkCookie>

///////////////////////////////////////////////////////////////////////////////////////////////////

// global

//static const QString kLoginURL = "http://www.facebook.com/login.php";

///////////////////////////////////////////////////////////////////////////////////////////////////

void FBLoginDialog::connectToGetSession(const QString& aToken)

{

	qDebug()<<"Inside FBLoginDialog::connectToGetSession()";

    iGetSessionRequest = FBRequest::requestWithSession(iSession);

    //connect(iGetSessionRequest, SIGNAL(LoadLoginPage()), this, SLOT(LoadLoginPage()));

    connect(iGetSessionRequest, SIGNAL(requestDidLoad(QVariant)), this, SLOT(requestDidLoad(QVariant)));

    connect(iGetSessionRequest, SIGNAL(requestFailedWithNetworkError(QNetworkReply::NetworkError)), this, SLOT(requestFailedWithNetworkError(QNetworkReply::NetworkError)));

    connect(iGetSessionRequest, SIGNAL(requestFailedWithFacebookError(FBError)), this, SLOT(requestFailedWithFacebookError(FBError)));

    Dictionary params;

    params["auth_token"] = aToken;

    if (iSession->apiSecret().length())

    {

        params["generate_session_secret"]="1";

    }

    if (iSession->getSessionProxy().length())

    {

        iGetSessionRequest->post(iSession->getSessionProxy(),params);

    }

    else

    {

        iGetSessionRequest->call("facebook.auth.getSession", params);

    }

}

void FBLoginDialog::connectToGetToken()

	{

		qDebug()<<"Inside FBLoginDialog::connectToGetToken()";

	    iGetSessionRequest = FBRequest::requestWithSession(iSession);

	   // connect(iGetSessionRequest, SIGNAL(requestDidLoad(QVariant)), this, SLOT(requestDidLoad(QVariant)));

	 //   connect(iGetSessionRequest, SIGNAL(requestFailedWithNetworkError(QNetworkReply::NetworkError)), this, SLOT(requestFailedWithNetworkError(QNetworkReply::NetworkError)));

	  //  connect(iGetSessionRequest, SIGNAL(requestFailedWithFacebookError(FBError)), this, SLOT(requestFailedWithFacebookError(FBError)));

	    Dictionary postParams;

		iSession->stroauth_nonce = generateNONCE(43);

		iSession->stroauth_timestamp = generateTimeStamp();//QString::number(generateTimeStamp());

		qDebug()<<"iSession->stroauth_timestamp"<<iSession->stroauth_timestamp;

		//postParams["oauth_callback"] = kBase;

		postParams["oauth_consumer_key"] = kConsumerKey;

		postParams["oauth_signature_method"] = "HMAC-SHA1";

		postParams["oauth_timestamp"] = iSession->stroauth_timestamp;

		postParams["oauth_nonce"] = iSession->stroauth_nonce;

		postParams["oauth_version"] = "1.0";

		FBRequest* req = FBRequest::requestWithSession(iSession);

		iSession->stroauth_signature = req->generateSig(postParams);

	    iGetSessionRequest->call("/uas/oauth/accessToken", postParams);

	}

void FBLoginDialog::loadLoginPage()

{

    iGetSessionRequest = FBRequest::requestWithSession(iSession);

	qDebug()<<"Inside FBLoginDialog::loadLoginPage()";

    Dictionary getParams, postParams;

    iSession->stroauth_nonce = generateNONCE(43);

	iSession->stroauth_timestamp = generateTimeStamp();//QString::number(generateTimeStamp());

	qDebug()<<"iSession->stroauth_timestamp"<<iSession->stroauth_timestamp;

    postParams["oauth_consumer_key"] = kConsumerKey;

    postParams["oauth_signature_method"] = "HMAC-SHA1";

    postParams["oauth_timestamp"] = iSession->stroauth_timestamp;

    postParams["oauth_nonce"] = iSession->stroauth_nonce;

    postParams["oauth_version"] = "1.0";

    iSession->stroauth_signature = iGetSessionRequest->generateSig(postParams);

    connect(iGetSessionRequest, SIGNAL(LoadLoginPage()), this, SLOT(LoadLoginPage()));

    iGetSessionRequest->connect();

}

QByteArray FBLoginDialog::generateTimeStamp()

	{

		uint time = QDateTime::currentDateTime().toTime_t();

	    QByteArray timestamp = QByteArray::number( time );

	    return timestamp;

	}

QString FBLoginDialog::generateNONCE(const qint64 Length)

	{

	srand(time(0));

	//read upto milliseconds

	QString RetString;

	QString Letters(

			"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789");

	//append a randomly generated string to RetString

	for (int i = 0; i < Length; i++)

		{

		RetString.insert((i), Letters.at(rand() % Letters.size()));

		}

	return RetString;

	}

///////////////////////////////////////////////////////////////////////////////////////////////////

FBLoginDialog::FBLoginDialog() : FBDialog () {}

FBLoginDialog::FBLoginDialog(FBSession* aSession) : FBDialog(aSession) {}

///////////////////////////////////////////////////////////////////////////////////////////////////

// FBDialog

void FBLoginDialog::load()

{

	qDebug()<<"Inside FBLoginDialog::load()";

    loadLoginPage();

}

void FBLoginDialog::dialogWillDisappear()

{

	qDebug()<<"Inside FBLoginDialog::dialogWillDisappear()";

  iGetSessionRequest->cancel();

  if (!iSession->isConnected())

  {

      iSession->cancelLogin();

  }

}

void FBLoginDialog::GetSessionKey(const QUrl& aUrl)

{

	qDebug()<<"Inside FBLoginDialog::GetSessionKey()";

    const QString authToken = "auth_token=";

    const QString url ( aUrl.toString() );

    int start = url.indexOf(authToken);

    if (start != -1)

    {

        QString token;

        int end = url.indexOf("&", start);

        int delta = start + authToken.size() + 1;

        if (end != -1)

        {

            token = url.mid(delta, end - delta );

        }

        else

        {

            token = url.right(url.size() - delta + 1);

        }

        connectToGetSession(token);

    }

}

void FBLoginDialog::FetchKeyFromUrl(const QUrl& aUrl)

{

    const QString url ( aUrl.toString() );

    QStringList varList = url.split("{");

    QString newvar = varList[1];

    varList.clear();

    varList = newvar.split(",");

    QString session_key = varList[0];

    QString uid = varList[1];

    QString expires = varList[2];

    QString secret = varList[3];

    varList.clear();

    varList = session_key.split(":");

    session_key = varList[1];

    session_key = session_key.mid(1,session_key.length()-2);

    varList.clear();

    varList = uid.split(":");

    uid = varList[1];

	varList.clear();

	varList = expires.split(":");

	expires = varList[1];

	varList.clear();

	varList = secret.split(":");

	secret = varList[1];

	secret = secret.mid(1,secret.length()-2);

	varList.clear();

    qDebug()<<"session_key"<<session_key<<"\n";

    qDebug()<<"uid"<<uid<<"\n";

    qDebug()<<"expires"<<expires<<"\n";

    qDebug()<<"secret"<<secret<<"\n";

    uint expiry = expires.toUInt();//.toUInt(&conversionError);

    QDateTime expiration; expiration.setTime_t( expiry );

    iSession->beginSession(session_key, secret,expiration);

    iSession->resume();

}

///////////////////////////////////////////////////////////////////////////////////////////////////

// slots for signals from FBRequest

void FBLoginDialog::requestDidLoad(const QVariant& aResult)

{

	qDebug()<<"Inside FBLoginDialog::requestDidLoad";

    bool conversionError = false;

    QVariantHash object = aResult.toHash();

    QString sessionKey = object.value("session_key").toString();

    QString sessionSecret = object.value("secret").toString();

    QVariant ex = object.value("expires");

    uint expires = object.value("expires").toUInt(&conversionError);

    QDateTime expiration; expiration.setTime_t( expires );

    iSession->beginSession(sessionKey, sessionSecret,expiration);

    iSession->resume();

    dismissWithSuccess(true, true);

}

void FBLoginDialog::requestFailedWithFacebookError (const FBError& aCode )

{

	qDebug()<<"Inside FBLoginDialog::requestFailedWithFacebookError()";

    dismissWithError(aCode, true);

}

void FBLoginDialog::requestFailedWithNetworkError( QNetworkReply::NetworkError aCode )

{

	qDebug()<<"Inside FBLoginDialog::requestFailedWithNetworkError()";

    dismissWithError(aCode, true);

}

void FBLoginDialog::LoadLoginPage()

	{

	qDebug()<<"Enter: LoadLoginPage()";

	QString LoginUrl = kAuthorizeUrl + "?oauth_token=";

	LoginUrl += iSession->stroauth_Token;

/*	QNetworkCookieJar* cookieJar = iWebView->page()->networkAccessManager()->cookieJar();

	iWebView->page()->networkAccessManager()->setCookieJar(cookieJar);

	QNetworkCookie testCookie;// "test_cookie", "1");

	testCookie.setDomain ( "twitter.com" );

	QDateTime dt = QDateTime::currentDateTime();

	dt.addDays(1);

	testCookie.setExpirationDate(dt);

	testCookie.setHttpOnly(false);

	testCookie.setName("twittercookie");

	testCookie.setValue("1");

	testCookie.setPath ( "/" );

	testCookie.setSecure ( true);

	QList<QNetworkCookie> cookieList;

	cookieList.append(testCookie);

	cookieJar->setCookiesFromUrl ( cookieList, QUrl("https://www.twitter.com/") );

	QWebSettings::globalSettings()->setOfflineStoragePath("C:\\Data");*/

	iWebView->load(LoginUrl);

	qDebug()<<"Exit: LoadLoginPage()";

	}

void FBLoginDialog::GetAccessToken()

	{

		qDebug()<<"Inside FBLoginDialog::GetAccessToken()";

	    Dictionary postParams;

	    iSession->stroauth_nonce = generateNONCE(43);

		iSession->stroauth_timestamp = generateTimeStamp();

	    postParams["oauth_consumer_key"] = kConsumerKey;

	    postParams["oauth_nonce"] = iSession->stroauth_nonce;

	    postParams["oauth_signature_method"] = "HMAC-SHA1";

	    postParams["oauth_token"] = iSession->stroauth_Token;

	    postParams["oauth_timestamp"] = iSession->stroauth_timestamp;

	    postParams["oauth_verifier"] = iSession->stroauth_verifier;

	    postParams["oauth_version"] = "1.0";

	    iSession->stroauth_signature = iGetSessionRequest->generateSig(postParams);

	    iGetSessionRequest->connect_req("/access_token");

	}