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/** 
 * @file llregioninfomodel.cpp
 * @brief Region info model
 *
 * $LicenseInfo:firstyear=2011&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2011, 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 "llregioninfomodel.h"

// libs
#include "message.h"
#include "llregionflags.h"

// viewer
#include "llagent.h"
#include "llviewerregion.h"

void LLRegionInfoModel::reset()
{
	mSimAccess			= 0;
	mAgentLimit			= 0;

	mRegionFlags		= 0;
	mEstateID			= 0;
	mParentEstateID		= 0;

	mPricePerMeter		= 0;
	mRedirectGridX		= 0;
	mRedirectGridY		= 0;

	mBillableFactor		= 0.0f;
	mObjectBonusFactor	= 0.0f;
	mWaterHeight		= 0.0f;
	mTerrainRaiseLimit	= 0.0f;
	mTerrainLowerLimit	= 0.0f;
	mSunHour			= 0.0f;

	mUseEstateSun		= false;

	mSimType.clear();
	mSimName.clear();
}

LLRegionInfoModel::LLRegionInfoModel()
{
	reset();
}

boost::signals2::connection LLRegionInfoModel::setUpdateCallback(const update_signal_t::slot_type& cb)
{
	return mUpdateSignal.connect(cb);
}

void LLRegionInfoModel::sendRegionTerrain(const LLUUID& invoice) const
{
	std::string buffer;
	std::vector<std::string> strings;

	// ==========================================
	// Assemble and send setregionterrain message
	// "setregionterrain"
	// strings[0] = float water height
	// strings[1] = float terrain raise
	// strings[2] = float terrain lower
	// strings[3] = 'Y' use estate time
	// strings[4] = 'Y' fixed sun
	// strings[5] = float sun_hour
	// strings[6] = from estate, 'Y' use global time
	// strings[7] = from estate, 'Y' fixed sun
	// strings[8] = from estate, float sun_hour

	// *NOTE: this resets estate sun info.
	BOOL estate_global_time = true;
	BOOL estate_fixed_sun = false;
	F32 estate_sun_hour = 0.f;

	buffer = llformat("%f", mWaterHeight);
	strings.push_back(buffer);
	buffer = llformat("%f", mTerrainRaiseLimit);
	strings.push_back(buffer);
	buffer = llformat("%f", mTerrainLowerLimit);
	strings.push_back(buffer);
	buffer = llformat("%s", (mUseEstateSun ? "Y" : "N"));
	strings.push_back(buffer);
	buffer = llformat("%s", (getUseFixedSun() ? "Y" : "N"));
	strings.push_back(buffer);
	buffer = llformat("%f", mSunHour);
	strings.push_back(buffer);
	buffer = llformat("%s", (estate_global_time ? "Y" : "N") );
	strings.push_back(buffer);
	buffer = llformat("%s", (estate_fixed_sun ? "Y" : "N") );
	strings.push_back(buffer);
	buffer = llformat("%f", estate_sun_hour);
	strings.push_back(buffer);

	sendEstateOwnerMessage(gMessageSystem, "setregionterrain", invoice, strings);
}

bool LLRegionInfoModel::getUseFixedSun() const
{
	return ((mRegionFlags & REGION_FLAGS_SUN_FIXED) != 0);
}

void LLRegionInfoModel::setUseFixedSun(bool fixed)
{
	if (fixed)
	{
		mRegionFlags |= REGION_FLAGS_SUN_FIXED;
	}
	else
	{
		mRegionFlags &= ~REGION_FLAGS_SUN_FIXED;
	}
}

void LLRegionInfoModel::update(LLMessageSystem* msg)
{
	reset();

	msg->getStringFast(_PREHASH_RegionInfo, _PREHASH_SimName, mSimName);
	msg->getU32Fast(_PREHASH_RegionInfo, _PREHASH_EstateID, mEstateID);
	msg->getU32Fast(_PREHASH_RegionInfo, _PREHASH_ParentEstateID, mParentEstateID);
	msg->getU8Fast(_PREHASH_RegionInfo, _PREHASH_SimAccess, mSimAccess);
	msg->getU8Fast(_PREHASH_RegionInfo, _PREHASH_MaxAgents, mAgentLimit);
	msg->getF32Fast(_PREHASH_RegionInfo, _PREHASH_ObjectBonusFactor, mObjectBonusFactor);
	msg->getF32Fast(_PREHASH_RegionInfo, _PREHASH_BillableFactor, mBillableFactor);
	msg->getF32Fast(_PREHASH_RegionInfo, _PREHASH_WaterHeight, mWaterHeight);
	msg->getF32Fast(_PREHASH_RegionInfo, _PREHASH_TerrainRaiseLimit, mTerrainRaiseLimit);
	msg->getF32Fast(_PREHASH_RegionInfo, _PREHASH_TerrainLowerLimit, mTerrainLowerLimit);
	msg->getS32Fast(_PREHASH_RegionInfo, _PREHASH_PricePerMeter, mPricePerMeter);
	msg->getS32Fast(_PREHASH_RegionInfo, _PREHASH_RedirectGridX, mRedirectGridX);
	msg->getS32Fast(_PREHASH_RegionInfo, _PREHASH_RedirectGridY, mRedirectGridY);

	msg->getBOOL(_PREHASH_RegionInfo, _PREHASH_UseEstateSun, mUseEstateSun);

	// actually the "last set" sun hour, not the current sun hour. JC
	msg->getF32(_PREHASH_RegionInfo, _PREHASH_SunHour, mSunHour);
	LL_DEBUGS("Windlight Sync") << "Got region sun hour: " << mSunHour << LL_ENDL;

	if (msg->has(_PREHASH_RegionInfo3))
	{
		msg->getU64Fast(_PREHASH_RegionInfo3, _PREHASH_RegionFlagsExtended, mRegionFlags);
	}
	else
	{
		U32 flags = 0;
		msg->getU32Fast(_PREHASH_RegionInfo, _PREHASH_RegionFlags, flags);
		mRegionFlags = flags;
	}

	// the only reasonable way to decide if we actually have any data is to
	// check to see if any of these fields have nonzero sizes
	if (msg->getSize(_PREHASH_RegionInfo2, _PREHASH_ProductSKU) > 0 ||
		msg->getSize(_PREHASH_RegionInfo2, "ProductName") > 0)
	{
		msg->getString(_PREHASH_RegionInfo2, "ProductName", mSimType);
	}

	// Let interested parties know that region info has been updated.
	mUpdateSignal();
}

// static
void LLRegionInfoModel::sendEstateOwnerMessage(
	LLMessageSystem* msg,
	const std::string& request,
	const LLUUID& invoice,
	const std::vector<std::string>& strings)
{
	LLViewerRegion* cur_region = gAgent.getRegion();

	if (!cur_region)
	{
		llwarns << "Agent region not set" << llendl;
		return;
	}

	llinfos << "Sending estate request '" << request << "'" << llendl;
	msg->newMessage("EstateOwnerMessage");
	msg->nextBlockFast(_PREHASH_AgentData);
	msg->addUUIDFast(_PREHASH_AgentID, gAgent.getID());
	msg->addUUIDFast(_PREHASH_SessionID, gAgent.getSessionID());
	msg->addUUIDFast(_PREHASH_TransactionID, LLUUID::null); //not used
	msg->nextBlock("MethodData");
	msg->addString("Method", request);
	msg->addUUID("Invoice", invoice);

	if (strings.empty())
	{
		msg->nextBlock("ParamList");
		msg->addString("Parameter", NULL);
	}
	else
	{
		std::vector<std::string>::const_iterator it = strings.begin();
		std::vector<std::string>::const_iterator end = strings.end();
		for (unsigned i = 0; it != end; ++it, ++i)
		{
			lldebugs << "- [" << i << "] " << (*it) << llendl;
			msg->nextBlock("ParamList");
			msg->addString("Parameter", *it);
		}
	}

	msg->sendReliable(cur_region->getHost());
}