/**
 * @file llnotificationofferhandler.cpp
 * @brief Notification Handler Class for Simple Notifications and Notification Tips
 *
 * $LicenseInfo:firstyear=2000&license=viewergpl$
 *
 * Copyright (c) 2000-2009, Linden Research, Inc.
 *
 * Second Life Viewer Source Code
 * The source code in this file ("Source Code") is provided by Linden Lab
 * to you under the terms of the GNU General Public License, version 2.0
 * ("GPL"), unless you have obtained a separate licensing agreement
 * ("Other License"), formally executed by you and Linden Lab.  Terms of
 * the GPL can be found in doc/GPL-license.txt in this distribution, or
 * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
 *
 * There are special exceptions to the terms and conditions of the GPL as
 * it is applied to this Source Code. View the full text of the exception
 * in the file doc/FLOSS-exception.txt in this software distribution, or
 * online at
 * http://secondlifegrid.net/programs/open_source/licensing/flossexception
 *
 * By copying, modifying or distributing this software, you acknowledge
 * that you have read and understood your obligations described above,
 * and agree to abide by those obligations.
 *
 * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
 * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
 * COMPLETENESS OR PERFORMANCE.
 * $/LicenseInfo$
 */


#include "llviewerprecompiledheaders.h" // must be first include

#include "llnotificationhandler.h"
#include "lltoastnotifypanel.h"
#include "llviewercontrol.h"
#include "llviewerwindow.h"
#include "llnotificationmanager.h"
#include "llnotifications.h"
#include "llscriptfloater.h"
#include "llimview.h"

using namespace LLNotificationsUI;

//--------------------------------------------------------------------------
LLOfferHandler::LLOfferHandler(e_notification_type type, const LLSD& id)
{
	mType = type;

	// Getting a Channel for our notifications
	mChannel = LLChannelManager::getInstance()->createNotificationChannel();
	mChannel->setControlHovering(true);

	LLScreenChannel* channel = dynamic_cast<LLScreenChannel*>(mChannel);
	if(channel)
		channel->setOnRejectToastCallback(boost::bind(&LLOfferHandler::onRejectToast, this, _1));
}

//--------------------------------------------------------------------------
LLOfferHandler::~LLOfferHandler()
{
}

//--------------------------------------------------------------------------
void LLOfferHandler::initChannel()
{
	S32 channel_right_bound = gViewerWindow->getWorldViewRectScaled().mRight - gSavedSettings.getS32("NotificationChannelRightMargin");
	S32 channel_width = gSavedSettings.getS32("NotifyBoxWidth");
	mChannel->init(channel_right_bound - channel_width, channel_right_bound);
}

//--------------------------------------------------------------------------
bool LLOfferHandler::processNotification(const LLSD& notify)
{
	if(!mChannel)
	{
		return false;
	}

	LLNotificationPtr notification = LLNotifications::instance().find(notify["id"].asUUID());

	if(!notification)
		return false;

	// arrange a channel on a screen
	if(!mChannel->getVisible())
	{
		initChannel();
	}

	if(notify["sigtype"].asString() == "add" || notify["sigtype"].asString() == "change")
	{
		LLHandlerUtil::logToIMP2P(notification);

		if( notification->getPayload().has("give_inventory_notification")
			&& !notification->getPayload()["give_inventory_notification"] )
		{
			// This is an original inventory offer, so add a script floater
			LLScriptFloaterManager::instance().onAddNotification(notification->getID());
		}
		else
		{
			if (LLHandlerUtil::canSpawnIMSession(notification))
			{
				const std::string name = notification->getSubstitutions().has(
						"NAME") ? notification->getSubstitutions()["NAME"]
						: notification->getSubstitutions()["[NAME]"];

				LLUUID from_id = notification->getPayload()["from_id"];

				LLUUID session_id = LLIMMgr::computeSessionID(
						IM_NOTHING_SPECIAL, from_id);

				LLIMModel::LLIMSession* session =
						LLIMModel::instance().findIMSession(session_id);
				if (session == NULL)
				{
					LLIMMgr::instance().addSession(name, IM_NOTHING_SPECIAL,
							from_id);
				}
			}

			LLToastNotifyPanel* notify_box = new LLToastNotifyPanel(notification);

			LLToast::Params p;
			p.notif_id = notification->getID();
			p.notification = notification;
			p.panel = notify_box;
			p.on_delete_toast = boost::bind(&LLOfferHandler::onDeleteToast, this, _1);
			
			LLScreenChannel* channel = dynamic_cast<LLScreenChannel*>(mChannel);
			if(channel)
				channel->addToast(p);

			// send a signal to the counter manager
			mNewNotificationSignal();
		}
	}
	else if (notify["sigtype"].asString() == "delete")
	{
		if( notification->getPayload().has("give_inventory_notification")
			&& !notification->getPayload()["give_inventory_notification"] )
		{
			// Remove original inventory offer script floater
			LLScriptFloaterManager::instance().onRemoveNotification(notification->getID());
		}
		else
		{
			mChannel->killToastByNotificationID(notification->getID());
		}
	}

	return true;
}

//--------------------------------------------------------------------------

void LLOfferHandler::onDeleteToast(LLToast* toast)
{
	// send a signal to the counter manager
	mDelNotificationSignal();

	// send a signal to a listener to let him perform some action
	// in this case listener is a SysWellWindow and it will remove a corresponding item from its list
	mNotificationIDSignal(toast->getNotificationID());
}

//--------------------------------------------------------------------------
void LLOfferHandler::onRejectToast(LLUUID& id)
{
	LLNotificationPtr notification = LLNotifications::instance().find(id);

	if (notification
			&& LLNotificationManager::getInstance()->getHandlerForNotification(
					notification->getType()) == this)
	{
		LLNotifications::instance().cancel(notification);
	}
}