/*

* Copyright (c) 2010 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: Presence info provider plugin for CntListModel. It can provide

*              the presence information of a contact (icon2 field).

*

*/

#include <qtcontacts.h>

#include "cntpresenceinfoprovider.h"

#include <prcpresencebuddyinfo_qt.h>

#include <prcpresencereader_qt.h>

CntPresenceInfoProvider::CntPresenceInfoProvider() :

    iReader(NULL),

    mManager(NULL)

{

    iReader = PrcPresenceReader::createReader();

    connect(iReader, SIGNAL(signalPresenceNotification(bool , PrcPresenceBuddyInfoQt*)), 

                           this, SLOT(handlePresenceUpdate(bool , PrcPresenceBuddyInfoQt*)));

    mManager = new QContactManager("symbian");

}

CntPresenceInfoProvider::~CntPresenceInfoProvider()

{

    delete iReader;

    delete mManager;

}

/*!

    /return the info fields supported by this provider

 */

ContactInfoFields CntPresenceInfoProvider::supportedFields() const

{

    // this provider has only info for the icon2 field

    return ContactInfoIcon2Field;

}

/*!

    The contact contains all the info this provider needs, so signals with the requested info

    fields are emitted immediately.

    /param contact the contact for which info is requested

    /param requestedInfo one or more of the flags in ContactInfoFields

 */

void CntPresenceInfoProvider::requestInfo(const QContact& contact, ContactInfoFields requestedInfo)

{

    if (requestedInfo & ContactInfoIcon2Field)

    {

        QList<QContactOnlineAccount> accounts = contact.details<QContactOnlineAccount>();

        QList<PrcPresenceBuddyInfoQt*> buddies;

        foreach (QContactOnlineAccount account, accounts)

        {

            QString fullAccount = account.serviceProvider() + ':' + account.accountUri();

            PrcPresenceBuddyInfoQt* buddy = iReader->presenceInfo(fullAccount);

            if (buddy)

            {

                buddies.append(buddy);

                if (!mBuddyMap.contains(buddy->buddyId()))

                {

                    mBuddyMap.insert(buddy->buddyId(), contact.localId());

                    iReader->subscribePresenceBuddyChange(buddy->buddyId());

                }

            }

        }

        if (buddies.count())

        {

            QString icon = parsePresence(buddies);

            if (!icon.isEmpty())

            {

                emit infoFieldReady(this, contact.localId(), ContactInfoIcon2Field, icon);

            }

            qDeleteAll(buddies);

        }

    }

}

/*!

    Update presence icon for contact if needed. Stop listening to presence changes for buddy

    if online account detail was deleted.

    /param aErrorCode error (if any)

    /param aPresenceBuddyInfo presence buddy that was updated

 */

void CntPresenceInfoProvider::handlePresenceUpdate(bool aSuccess, PrcPresenceBuddyInfoQt* aPresenceBuddyInfo)

{

    if (aSuccess && aPresenceBuddyInfo != NULL)

    {

        QContactLocalId id = mBuddyMap.value(aPresenceBuddyInfo->buddyId());

        QContact contact = mManager->contact(id);

        QList<QContactOnlineAccount> accounts = contact.details<QContactOnlineAccount>();

        QList<PrcPresenceBuddyInfoQt*> buddies;

        bool accountFound = false;

        foreach (QContactOnlineAccount account, accounts)

        {

            QString fullAccount = account.serviceProvider() + ':' + account.accountUri();

            PrcPresenceBuddyInfoQt* buddy = iReader->presenceInfo(fullAccount);

            if (buddy)

            {

                buddies.append(buddy);

                if (fullAccount == aPresenceBuddyInfo->buddyId())

                {

                    accountFound = true;

                }

                if (!mBuddyMap.contains(buddy->buddyId()))

                {

                    mBuddyMap.insert(buddy->buddyId(), contact.localId());

                    iReader->subscribePresenceBuddyChange(buddy->buddyId());

                }

            }

        }

        // Account was removed, no need to listen to presence changes anymore

        if (accounts.isEmpty() || !accountFound)

        {

            mBuddyMap.remove(aPresenceBuddyInfo->buddyId());

            iReader->unSubscribePresenceBuddyChange(aPresenceBuddyInfo->buddyId());

        }

        if (id > 0)

        {

            QString icon = parsePresence(buddies);

            emit infoFieldReady(this, id, ContactInfoIcon2Field, icon);

        }

        qDeleteAll(buddies);

    }

}

/*!

    Parse the required presence icon from multiple accounts.

    /param buddyList list of buddies

 */

QString CntPresenceInfoProvider::parsePresence(const QList<PrcPresenceBuddyInfoQt*>& buddyList)

{

    foreach (PrcPresenceBuddyInfoQt* buddy, buddyList)

    {

        PrcPresenceBuddyInfoQt::AvailabilityValues availability = buddy->availability();

        if (availability == PrcPresenceBuddyInfoQt::PrcAvailable)

        {

            return QString("qtg_small_online");

        }

    }

    return QString();

}