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/**
* @file lldonotdisturbnotificationstorage.cpp
* @brief Implementation of lldonotdisturbnotificationstorage
* @author Stinson@lindenlab.com
*
* $LicenseInfo:firstyear=2012&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2012, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
* $/LicenseInfo$
*/

#include "llviewerprecompiledheaders.h"

#include "lldonotdisturbnotificationstorage.h"

#include "llcommunicationchannel.h"
#include "lldir.h"
#include "llerror.h"
#include "llfloaterreg.h"
#include "llimview.h"
#include "llnotifications.h"
#include "llnotificationhandler.h"
#include "llnotificationstorage.h"
#include "llscriptfloater.h"
#include "llsd.h"
#include "llsingleton.h"
#include "lluuid.h"

static const F32 DND_TIMER = 3.0;
const char * LLDoNotDisturbNotificationStorage::toastName = "IMToast";
const char * LLDoNotDisturbNotificationStorage::offerName = "UserGiveItem";

LLDoNotDisturbNotificationStorageTimer::LLDoNotDisturbNotificationStorageTimer() : LLEventTimer(DND_TIMER)
{
}

LLDoNotDisturbNotificationStorageTimer::~LLDoNotDisturbNotificationStorageTimer()
{

}

bool LLDoNotDisturbNotificationStorageTimer::tick()
{
    LLDoNotDisturbNotificationStorage * doNotDisturbNotificationStorage =  LLDoNotDisturbNotificationStorage::getInstance();

    if(doNotDisturbNotificationStorage
        && doNotDisturbNotificationStorage->getDirty())
    {
        doNotDisturbNotificationStorage->saveNotifications();
    }
    return false;
}

LLDoNotDisturbNotificationStorage::LLDoNotDisturbNotificationStorage()
    : LLNotificationStorage("")
    , mDirty(false)
{
    nameToPayloadParameterMap[toastName] = "SESSION_ID";
    nameToPayloadParameterMap[offerName] = "object_id";
    initialize();
}

LLDoNotDisturbNotificationStorage::~LLDoNotDisturbNotificationStorage()
{
}

void LLDoNotDisturbNotificationStorage::reset()
{
    setFileName(gDirUtilp->getExpandedFilename(LL_PATH_PER_SL_ACCOUNT, "dnd_notifications.xml"));
}

void LLDoNotDisturbNotificationStorage::initialize()
{
    reset();
    getCommunicationChannel()->connectFailedFilter(boost::bind(&LLDoNotDisturbNotificationStorage::onChannelChanged, this, _1));
}

bool LLDoNotDisturbNotificationStorage::getDirty()
{
    return mDirty;
}

void LLDoNotDisturbNotificationStorage::resetDirty()
{
    mDirty = false;
}

void LLDoNotDisturbNotificationStorage::saveNotifications()
{
    LL_PROFILE_ZONE_SCOPED;

    LLNotificationChannelPtr channelPtr = getCommunicationChannel();
    const LLCommunicationChannel *commChannel = dynamic_cast<LLCommunicationChannel*>(channelPtr.get());
    llassert(commChannel != NULL);

    LLSD output = LLSD::emptyMap();
    LLSD& data = output["data"];
    data = LLSD::emptyArray();

    for (LLCommunicationChannel::history_list_t::const_iterator historyIter = commChannel->beginHistory();
        historyIter != commChannel->endHistory(); ++historyIter)
    {
        LLNotificationPtr notificationPtr = historyIter->second;

        if (!notificationPtr->isRespondedTo() && !notificationPtr->isCancelled() &&
            !notificationPtr->isExpired() && !notificationPtr->isPersistent())
        {
            data.append(notificationPtr->asLLSD(true));
        }
    }

    writeNotifications(output);

    resetDirty();
}

static LLTrace::BlockTimerStatHandle FTM_LOAD_DND_NOTIFICATIONS("Load DND Notifications");

void LLDoNotDisturbNotificationStorage::loadNotifications()
{
    LL_RECORD_BLOCK_TIME(FTM_LOAD_DND_NOTIFICATIONS);

    LL_INFOS("LLDoNotDisturbNotificationStorage") << "start loading notifications" << LL_ENDL;

    LLSD input;
    if (!readNotifications(input) ||input.isUndefined())
    {
        return;
    }

    LLSD& data = input["data"];
    if (data.isUndefined())
    {
        return;
    }

    LLNotifications& instance = LLNotifications::instance();
    bool imToastExists = false;
    bool group_ad_hoc_toast_exists = false;
    S32 toastSessionType;
    bool offerExists = false;

    for (LLSD::array_const_iterator notification_it = data.beginArray();
         notification_it != data.endArray();
         ++notification_it)
    {
        LLSD notification_params = *notification_it;
        const LLUUID& notificationID = notification_params["id"];
        std::string notificationName = notification_params["name"];
        LLNotificationPtr notification = instance.find(notificationID);

        if(notificationName == toastName)
        {
            toastSessionType = notification_params["payload"]["SESSION_TYPE"];
            if(toastSessionType == LLIMModel::LLIMSession::P2P_SESSION)
            {
                imToastExists = true;
            }
            //Don't add group/ad-hoc messages to the notification system because
            //this means the group/ad-hoc session has to be re-created
            else if(toastSessionType == LLIMModel::LLIMSession::GROUP_SESSION
                    || toastSessionType == LLIMModel::LLIMSession::ADHOC_SESSION)
            {
                //Just allows opening the conversation log for group/ad-hoc messages upon startup
                group_ad_hoc_toast_exists = true;
                continue;
            }
        }
        else if(notificationName == offerName)
        {
            offerExists = true;
        }

        //Notification already exists due to persistent storage adding it first into the notification system
        if(notification)
        {
            notification->setDND(true);
            instance.update(instance.find(notificationID));
        }
        //New notification needs to be added
        else
        {
            notification = (LLNotificationPtr) new LLNotification(notification_params.with("is_dnd", true));
            LLNotificationResponderInterface* responder = createResponder(notification_params["responder_sd"]["responder_type"], notification_params["responder_sd"]);
            if (responder == NULL)
            {
                LL_WARNS("LLDoNotDisturbNotificationStorage") << "cannot create responder for notification of type '"
                    << notification->getType() << "'" << LL_ENDL;
            }
            else
            {
                LLNotificationResponderPtr responderPtr(responder);
                notification->setResponseFunctor(responderPtr);
            }

            instance.add(notification);
        }

    }

    bool isConversationLoggingAllowed = gSavedPerAccountSettings.getS32("KeepConversationLogTranscripts") > 0;
    if(group_ad_hoc_toast_exists && isConversationLoggingAllowed)
    {
        LLFloaterReg::showInstance("conversation");
    }

    if(imToastExists || group_ad_hoc_toast_exists || offerExists)
    {
        make_ui_sound_deferred("UISndNewIncomingIMSession");
    }

    //writes out empty .xml file (since LLCommunicationChannel::mHistory is empty)
    saveNotifications();

    LL_INFOS("LLDoNotDisturbNotificationStorage") << "finished loading notifications" << LL_ENDL;
}

void LLDoNotDisturbNotificationStorage::updateNotifications()
{

    LLNotificationChannelPtr channelPtr = getCommunicationChannel();
    LLCommunicationChannel *commChannel = dynamic_cast<LLCommunicationChannel*>(channelPtr.get());
    llassert(commChannel != NULL);

    LLNotifications& instance = LLNotifications::instance();
    bool imToastExists = false;
    bool offerExists = false;

    for (LLCommunicationChannel::history_list_t::const_iterator it = commChannel->beginHistory();
        it != commChannel->endHistory();
        ++it)
    {
        LLNotificationPtr notification = it->second;
        std::string notificationName = notification->getName();

        if(notificationName == toastName)
        {
            imToastExists = true;
        }
        else if(notificationName == offerName)
        {
            offerExists = true;
        }

        //Notification already exists in notification pipeline (same instance of app running)
        if (notification)
        {
            notification->setDND(true);
            instance.update(notification);
        }
    }

    if(imToastExists || offerExists)
    {
        make_ui_sound("UISndNewIncomingIMSession");
    }

    //When exit DND mode, write empty notifications file
    if(commChannel->getHistorySize())
    {
        commChannel->clearHistory();
        saveNotifications();
    }
}

LLNotificationChannelPtr LLDoNotDisturbNotificationStorage::getCommunicationChannel() const
{
    LLNotificationChannelPtr channelPtr = LLNotifications::getInstance()->getChannel("Communication");
    llassert(channelPtr);
    return channelPtr;
}

void LLDoNotDisturbNotificationStorage::removeNotification(const char * name, const LLUUID& id)
{
    LLNotifications& instance = LLNotifications::instance();
    LLNotificationChannelPtr channelPtr = getCommunicationChannel();
    LLCommunicationChannel *commChannel = dynamic_cast<LLCommunicationChannel*>(channelPtr.get());
    LLNotificationPtr notification;
    LLSD payload;
    LLUUID notificationObjectID;
    std::string notificationName;
    std::string payloadVariable = nameToPayloadParameterMap[name];
    LLCommunicationChannel::history_list_t::iterator it;
    std::vector<LLCommunicationChannel::history_list_t::iterator> itemsToRemove;

    //Find notification with the matching session id
    for (it = commChannel->beginHistory();
        it != commChannel->endHistory();
        ++it)
    {
        notification = it->second;
        payload = notification->getPayload();
        notificationObjectID = payload[payloadVariable].asUUID();
        notificationName = notification->getName();

        if((notificationName == name)
            && id == notificationObjectID)
        {
            itemsToRemove.push_back(it);
        }
    }


    //Remove the notifications
    if(itemsToRemove.size())
    {
        while(itemsToRemove.size())
        {
            it = itemsToRemove.back();
            notification = it->second;
            commChannel->removeItemFromHistory(notification);
            instance.cancel(notification);
            itemsToRemove.pop_back();
        }
        //Trigger saving of notifications to xml once all have been removed
        saveNotifications();
    }
}


bool LLDoNotDisturbNotificationStorage::onChannelChanged(const LLSD& pPayload)
{
    if (pPayload["sigtype"].asString() != "load")
    {
        mDirty = true;
    }

    return false;
}