/* Copyright (C) 2013 Liru Færs
 *
 * 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; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * 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 */

#include "llviewerprecompiledheaders.h"

#include "lfsimfeaturehandler.h"

#include "llagent.h"
#include "lllogininstance.h"
#include "llviewercontrol.h"
#include "llviewernetwork.h"
#include "llviewerregion.h"
#include "llworld.h"
// <COLOSI opensim multi-currency support>
#include "llnotificationsutil.h"
#include "tea.h"
#include "llstatusbar.h"
#include "llfloaterbuycurrency.h"
// </COLOSI opensim multi-currency support>

LFSimFeatureHandler::LFSimFeatureHandler()
	: mSupportsExport(false),
	mSayRange(20),
	mShoutRange(100),
	mWhisperRange(10),
	mHasAvatarPicker(false),
	mHasDestinationGuide(false),
	mSimulatorFPS(45.f),
	mSimulatorFPSFactor(1.f),
	mSimulatorFPSWarn(30.f),
	mSimulatorFPSCrit(20.f)
{
	LL_INFOS() << "Initializing Sim Feature Handler" << LL_ENDL;

	gAgent.addRegionChangedCallback(boost::bind(&LFSimFeatureHandler::handleRegionChange, this));

	// Call setSupportedFeatures -> This will work because we construct
	// our singleton instance during STATE_SEED_CAP_GRANTED startup state
	// after we received the initial region caps
	setSupportedFeatures();
}

ExportSupport LFSimFeatureHandler::exportPolicy() const
{
	return LLGridManager::getInstance()->isInSecondLife() ? EXPORT_UNDEFINED : (mSupportsExport ? EXPORT_ALLOWED : EXPORT_DENIED);
}

void LFSimFeatureHandler::handleRegionChange()
{
	if (LLViewerRegion* region = gAgent.getRegion())
	{
		if (region->simulatorFeaturesReceived())
		{
			setSupportedFeatures();
		}
		else
		{
			region->setSimulatorFeaturesReceivedCallback(boost::bind(&LFSimFeatureHandler::onSimulatorFeaturesReceived,this,_1));
		}
	}
}

void LFSimFeatureHandler::onSimulatorFeaturesReceived(const LLUUID &region_id)
{
	LLViewerRegion *region = gAgent.getRegion();
	if (region && (region->getRegionID()==region_id))
	{
		setSupportedFeatures();
	}
}

void LFSimFeatureHandler::setSupportedFeatures()
{
	if (LLViewerRegion* region = gAgent.getRegion())
	{
		LLSD info;
		region->getSimulatorFeatures(info);
		if (!LLGridManager::getInstance()->isInSecondLife() && info.has("OpenSimExtras")) // OpenSim specific sim features
		{
			LL_INFOS("SimFeatures") << "Setting OpenSimExtras..." << LL_ENDL;

			// For definition of OpenSimExtras please see
			// http://opensimulator.org/wiki/SimulatorFeatures_Extras
			const LLSD& extras(info["OpenSimExtras"]);
			LL_DEBUGS("SimFeatures") << "OpenSimExtras received: " << extras << LL_ENDL;

			mSupportsExport = extras.has("ExportSupported") ? extras["ExportSupported"].asBoolean() : false;
			mMapServerURL = extras.has("map-server-url") ? extras["map-server-url"].asString() : gSavedSettings.getString("CurrentMapServerURL");
			mSayRange = extras.has("say-range") ? extras["say-range"].asInteger() : 20;
			mShoutRange = extras.has("shout-range") ? extras["shout-range"].asInteger() : 100;
			mWhisperRange = extras.has("whisper-range") ? extras["whisper-range"].asInteger() : 10;

			if(extras.has("GridURL"))
			{
				// If we have GridURL specified in the extras then we use this by default
				mHyperGridPrefix =  extras["GridURL"].asString();
				auto pos = mHyperGridPrefix.find("://");
				if( pos != std::string::npos)
				{
					// We always strip off the protocol prefix if it exists
					// Note: we do not attempt to clear trailing port numbers or / or even directories.
					mHyperGridPrefix = mHyperGridPrefix.substr(pos+3,mHyperGridPrefix.size()-(pos+3));
				}
				LL_DEBUGS("SimFeatures") << "Setting HyperGrid URL to \"GridURL\" [" << mHyperGridPrefix << "]" << LL_ENDL;
			}
#ifdef OPENSIM
			else if (LLGridManager::instance().getGatekeeper() != std::string{})
			{
				// Note: this is a tentative test pending further use of gatekeeper
				// worst case this is checking the login grid and will simply be the same as the fallback
				// If the GridURL is not available then we will try to use the Gatekeeper which is expected to be present.
				mHyperGridPrefix = LLGridManager::instance().getGatekeeper();
				LL_DEBUGS("SimFeatures") << "Setting HyperGrid URL to \"Gatekeeper\" [" << mHyperGridPrefix << "]" << LL_ENDL;
			}
#endif
			else
			{
				// Just in case that fails we will default back to the current grid
				mHyperGridPrefix = LLGridManager::instance().getGrid();
				LL_DEBUGS("SimFeatures") << "Setting HyperGrid URL to fallback of current grid (target grid is misconfigured) [" << mHyperGridPrefix << "]" << LL_ENDL;
			}

			if (extras.has("SimulatorFPS") && extras.has("SimulatorFPSFactor") &&
				extras.has("SimulatorFPSWarnPercent") && extras.has("SimulatorFPSCritPercent"))
			{
				mSimulatorFPS = extras["SimulatorFPS"].asReal();
				mSimulatorFPSFactor = extras["SimulatorFPSFactor"].asReal();
				mSimulatorFPSWarn = (mSimulatorFPS * mSimulatorFPSFactor) * (extras["SimulatorFPSWarnPercent"].asReal() / 100.f);
				mSimulatorFPSCrit = (mSimulatorFPS * mSimulatorFPSFactor) * (extras["SimulatorFPSCritPercent"].asReal() / 100.f);
			}
			else
			{
				mSimulatorFPS = 45.f;
				mSimulatorFPSFactor = 1.f;
				mSimulatorFPSWarn = 30.f;
				mSimulatorFPSCrit = 20.f;
			}

			if (extras.has("search-server-url"))
			{
				mSearchURL = extras["search-server-url"].asString();
			}
			else if (LLLoginInstance::getInstance()->hasResponse("search"))
			{
				mSearchURL = LLLoginInstance::getInstance()->getResponse("search").asString();
			}
			else
			{
				mSearchURL = LLGridManager::getInstance()->isInSecondLife() ? gSavedSettings.getString("SearchURL") : gSavedSettings.getString("SearchURLOpenSim");
			}

			if (extras.has("destination-guide-url"))
			{
				mDestinationGuideURL = extras["destination-guide-url"].asString();
			}
			else if (LLLoginInstance::getInstance()->hasResponse("destination_guide_url"))
			{
				mDestinationGuideURL = LLLoginInstance::getInstance()->getResponse("destination_guide_url").asString();
			}
			else if (LLGridManager::instance().isInSecondLife())
			{
				mDestinationGuideURL = gSavedSettings.getString("DestinationGuideURL");
			}
			else
			{
				mDestinationGuideURL = LLStringUtil::null;
			}

			if (extras.has("avatar-picker-url"))
			{
				mAvatarPickerURL = extras["avatar-picker-url"].asString();
			}
			else if (LLLoginInstance::getInstance()->hasResponse("avatar-picker-url"))
			{
				mAvatarPickerURL = LLLoginInstance::getInstance()->getResponse("avatar-picker-url").asString();
			}
			else if (LLGridManager::instance().isInSecondLife())
			{
				mAvatarPickerURL = gSavedSettings.getString("AvatarPickerURL");
			}
			else
			{
				mAvatarPickerURL = LLStringUtil::null;
			}

			// <COLOSI opensim multi-currency support>
			if (extras.has("currency-base-uri"))
			{
				if (mHelperUriOverride != extras["currency-base-uri"].asString())
				{
					LLNotificationsUtil::add("CurrencyURIOverrideReceived");
				}
				mHelperUriOverride = extras["currency-base-uri"].asString();
			}
			else
			{
				mHelperUriOverride = LLStringUtil::null;
			}

			if (extras.has("currency"))
			{
				mCurrencySymbolOverride = extras["currency"].asString();
			}
			else
			{
				mCurrencySymbolOverride = LLStringUtil::null;
			}
			// </COLOSI opensim multi-currency support>
			// Adding feature extensions adopted from Aurora to OpenSim
			auto regionSettings=LLWorld::getInstance();
			if(extras.has("MinPrimScale"))
			{
				regionSettings->setRegionMinPrimScale(extras["MinPrimScale"].asReal());
			}
			if(extras.has("MaxPrimScale"))
			{
				regionSettings->setRegionMaxPrimScale(extras["MaxPrimScale"].asReal());
				regionSettings->setRegionMaxPrimScaleNoMesh(extras["MaxPrimScale"].asReal());
			}
			if(extras.has("MaxPhysPrimScale"))
			{
				regionSettings->setMaxPhysPrimScale(extras["MaxPhysPrimScale"].asReal());
			}
		}
		else // OpenSim specifics are unsupported reset all to default
		{
			LL_INFOS() << "Setting defaults..." << LL_ENDL;
			mSupportsExport = false;
			mMapServerURL = gSavedSettings.getString("CurrentMapServerURL");
			mSayRange = 20;
			mShoutRange = 100;
			mWhisperRange = 10;
			mSimulatorFPS = 45.f;
			mSimulatorFPSFactor = 1.f;
			mSimulatorFPSWarn = 30.f;
			mSimulatorFPSCrit = 20.f;
			LLWorld::getInstance()->refreshLimits();// reset  prim scales etc.

			if (LLLoginInstance::getInstance()->hasResponse("search"))
			{
				mSearchURL = LLLoginInstance::getInstance()->getResponse("search").asString();
			}
			else
			{
				mSearchURL = LLGridManager::getInstance()->isInSecondLife() ? gSavedSettings.getString("SearchURL") : gSavedSettings.getString("SearchURLOpenSim");
			}

			if (LLLoginInstance::getInstance()->hasResponse("destination_guide_url"))
			{
				mDestinationGuideURL = LLLoginInstance::getInstance()->getResponse("destination_guide_url").asString();
			}
			else if (LLGridManager::instance().isInSecondLife())
			{
				mDestinationGuideURL = gSavedSettings.getString("DestinationGuideURL");
			}
			else
			{
				mDestinationGuideURL = LLStringUtil::null;
			}

			if (LLLoginInstance::getInstance()->hasResponse("avatar-picker-url"))
			{
				mAvatarPickerURL = LLLoginInstance::getInstance()->getResponse("avatar-picker-url").asString();
			}
			else if (LLGridManager::instance().isInSecondLife())
			{
				mAvatarPickerURL = gSavedSettings.getString("AvatarPickerURL");
			}
			else
			{
				mAvatarPickerURL = LLStringUtil::null;
			}

			// <COLOSI opensim multi-currency support>
			mHelperUriOverride = LLStringUtil::null;
			mCurrencySymbolOverride = LLStringUtil::null;
			// </COLOSI opensim multi-currency support>>
		}

		mHasAvatarPicker = !avatarPickerURL().empty();
		mHasDestinationGuide = !destinationGuideURL().empty();
		
		// <COLOSI opensim multi-currency support>
		std::string prev_currency_symbol = Tea::getCurrency();
		Tea::setRegionCurrency(mCurrencySymbolOverride);
		std::string new_currency_symbol = Tea::getCurrency();
		// If currency symbol has changed, then update things
		if (new_currency_symbol != prev_currency_symbol)
		{
			LFSimFeatureHandler::updateCurrencySymbols();
		}
		// </COLOSI opensim multi-currency support>
	}
}

// <COLOSI opensim multi-currency support>
//static
void LFSimFeatureHandler::updateCurrencySymbols()
{
	// Update the static ui for the buy_currency_floater xml version; html version may require additional work.
	LLFloaterBuyCurrency::updateCurrencySymbols();
	// Update the necessary compontents of the status bar panel
	if (gStatusBar)
	{
		gStatusBar->updateCurrencySymbols();
	}
	// TODO: What else needs to be updated?
}
// </COLOSI opensim multi-currency support>

boost::signals2::connection LFSimFeatureHandler::setSupportsExportCallback(const SignaledType<bool>::changed_signal_t& slot)
{
	return mSupportsExport.connect(slot);
}

boost::signals2::connection LFSimFeatureHandler::setSearchURLCallback(const SignaledType<std::string>::changed_signal_t& slot)
{
	return mSearchURL.connect(slot);
}

boost::signals2::connection LFSimFeatureHandler::setSayRangeCallback(const SignaledType<U32>::changed_signal_t& slot)
{
	return mSayRange.connect(slot);
}

boost::signals2::connection LFSimFeatureHandler::setShoutRangeCallback(const SignaledType<U32>::changed_signal_t& slot)
{
	return mShoutRange.connect(slot);
}

boost::signals2::connection LFSimFeatureHandler::setWhisperRangeCallback(const SignaledType<U32>::changed_signal_t& slot)
{
	return mWhisperRange.connect(slot);
}

boost::signals2::connection LFSimFeatureHandler::setAvatarPickerCallback(const SignaledType<std::string>::changed_signal_t& slot)
{
	return mAvatarPickerURL.connect(slot);
}

boost::signals2::connection LFSimFeatureHandler::setDestinationGuideCallback(const SignaledType<std::string>::changed_signal_t& slot)
{
	return mDestinationGuideURL.connect(slot);
}