/** 
 * @file llfloaterdaycycle.cpp
 * @brief LLFloaterDayCycle class definition
 *
 * $LicenseInfo:firstyear=2007&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, 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 "llfloaterdaycycle.h"

#include "pipeline.h"
#include "llsky.h"

#include "llsliderctrl.h"
#include "llmultislider.h"
#include "llmultisliderctrl.h"
#include "llspinctrl.h"
#include "llcheckboxctrl.h"
#include "lluictrlfactory.h"
#include "llviewercamera.h"
#include "llcombobox.h"
#include "lllineeditor.h"
#include "llwlanimator.h"
#include "llnotifications.h"
#include "llnotificationsutil.h"

#include "v4math.h"
#include "llviewerdisplay.h"
#include "llviewercontrol.h"
#include "llviewerwindow.h"

#include "llwlparamset.h"
#include "llwlparammanager.h"
#include "llpostprocess.h"
#include "llfloaterwindlight.h"
//#include "llwindlightscrubbers.h" // *HACK commented out since this code isn't released (yet)
#include "llenvmanager.h"
#include "llfloaterreg.h"

LLFloaterDayCycle* LLFloaterDayCycle::sDayCycle = NULL;
const F32 LLFloaterDayCycle::sHoursPerDay = 24.0f;
std::map<std::string, LLWLCycleSliderKey> LLFloaterDayCycle::sSliderToKey;
LLEnvKey::EScope LLFloaterDayCycle::sScope;
std::string LLFloaterDayCycle::sOriginalTitle;
LLWLAnimator::ETime LLFloaterDayCycle::sPreviousTimeType = LLWLAnimator::TIME_LINDEN;

LLFloaterDayCycle::LLFloaterDayCycle(const LLSD &key) : LLFloater(key)
{
}

// virtual
BOOL LLFloaterDayCycle::postBuild()
{
	sOriginalTitle = getTitle();

	// *HACK commented out since this code isn't released (yet)
	//llassert(LLWLPacketScrubber::MAX_LOCAL_KEY_FRAMES <= getChild<LLMultiSliderCtrl>("WLDayCycleKeys")->getMaxValue() &&
	//	     LLWLPacketScrubber::MAX_REGION_KEY_FRAMES <= getChild<LLMultiSliderCtrl>("WLDayCycleKeys")->getMaxValue());

	// add the time slider
	LLMultiSliderCtrl* sldr = getChild<LLMultiSliderCtrl>("WLTimeSlider");

	sldr->addSlider();

	// load it up
	initCallbacks();

	return TRUE;
}

LLFloaterDayCycle::~LLFloaterDayCycle()
{
}

void LLFloaterDayCycle::onClickHelp(void* data)
{
	std::string xml_alert = *(std::string *) data;
	LLNotifications::instance().add(xml_alert, LLSD(), LLSD());
}

void LLFloaterDayCycle::initHelpBtn(const std::string& name, const std::string& xml_alert)
{
	childSetAction(name, onClickHelp, new std::string(xml_alert));
}

void LLFloaterDayCycle::initCallbacks(void) 
{
	initHelpBtn("WLDayCycleHelp", "HelpDayCycle");

	// WL Day Cycle
	childSetCommitCallback("WLTimeSlider", onTimeSliderMoved, NULL);
	childSetCommitCallback("WLDayCycleKeys", onKeyTimeMoved, NULL);
	childSetCommitCallback("WLCurKeyHour", onKeyTimeChanged, NULL);
	childSetCommitCallback("WLCurKeyMin", onKeyTimeChanged, NULL);
	childSetCommitCallback("WLKeyPresets", onKeyPresetChanged, NULL);

	childSetAction("WLAddKey", onAddKey, NULL);
	childSetAction("WLDeleteKey", onDeleteKey, NULL);
}

void LLFloaterDayCycle::syncMenu()
{
	// set time
	LLMultiSliderCtrl* sldr = LLFloaterDayCycle::sDayCycle->getChild<LLMultiSliderCtrl>("WLTimeSlider");
	sldr->setCurSliderValue((F32)LLWLParamManager::getInstance()->mAnimator.getDayTime() * sHoursPerDay);

	// turn off Use Estate Time button if it's already being used
	if(	LLWLParamManager::getInstance()->mAnimator.getUseLindenTime())
	{
		LLFloaterDayCycle::sDayCycle->childDisable("WLUseLindenTime");
	} 
	else 
	{
		LLFloaterDayCycle::sDayCycle->childEnable("WLUseLindenTime");
	}
}

void LLFloaterDayCycle::syncSliderTrack()
{
	// clear the slider
	LLMultiSliderCtrl* kSldr = sDayCycle->getChild<LLMultiSliderCtrl>("WLDayCycleKeys");

	kSldr->clear();
	sSliderToKey.clear();

	// add sliders

	lldebugs << "Adding " << LLWLParamManager::getInstance()->mDay.mTimeMap.size() << " keys to slider" << llendl;

	std::map<F32, LLWLParamKey>::iterator mIt = 
		LLWLParamManager::getInstance()->mDay.mTimeMap.begin();
	for(; mIt != LLWLParamManager::getInstance()->mDay.mTimeMap.end(); mIt++) 
	{
		addSliderKey(mIt->first * sHoursPerDay, mIt->second);
	}
}

void LLFloaterDayCycle::syncTrack()
{
	lldebugs << "Syncing track (" << sSliderToKey.size() << ")" << llendl;

	// if no keys, do nothing
	if(sSliderToKey.size() == 0) 
	{
		lldebugs << "No keys, not syncing" << llendl;
		return;
	}
	
	LLMultiSliderCtrl* sldr;
	sldr = sDayCycle->getChild<LLMultiSliderCtrl>( 
		"WLDayCycleKeys");
	llassert_always(sSliderToKey.size() == sldr->getValue().size());
	
	LLMultiSliderCtrl* tSldr;
	tSldr = sDayCycle->getChild<LLMultiSliderCtrl>( 
		"WLTimeSlider");

	// create a new animation track
	LLWLParamManager::getInstance()->mDay.clearKeyframes();
	
	// add the keys one by one
	std::map<std::string, LLWLCycleSliderKey>::iterator mIt = sSliderToKey.begin();
	for(; mIt != sSliderToKey.end(); mIt++) 
	{
		LLWLParamManager::getInstance()->mDay.addKeyframe(mIt->second.time / sHoursPerDay, 
			mIt->second.keyframe);
	}
	
	// set the param manager's track to the new one
	LLWLParamManager::getInstance()->resetAnimator(
		tSldr->getCurSliderValue() / sHoursPerDay, false);

	LLWLParamManager::getInstance()->mAnimator.update(
		LLWLParamManager::getInstance()->mCurParams);
}

void LLFloaterDayCycle::refreshPresetsFromParamManager()
{
	LLComboBox* keyCombo = sDayCycle->getChild<LLComboBox>("WLKeyPresets");

	if(keyCombo != NULL) 
	{
		LLWLParamManager::preset_key_list_t preset_keys;
		LLWLParamManager::instance().getPresetKeys(preset_keys);
		for (LLWLParamManager::preset_key_list_t::const_iterator it = preset_keys.begin(); it != preset_keys.end(); ++it)
		{
			if (it->scope <= sScope)
			{
				const LLWLParamKey& key = *it;
				llinfos << "Adding key: " << key.toString() << llendl;
				keyCombo->add(key.toString(), LLSD(key.toStringVal()));
			}
		}

		// set defaults on combo boxes
		keyCombo->selectFirstItem();
	}
}

// static
LLFloaterDayCycle* LLFloaterDayCycle::instance()
{
	if (!sDayCycle)
	{
		lldebugs << "Instantiating Day Cycle floater" << llendl;
		sDayCycle = LLFloaterReg::getTypedInstance<LLFloaterDayCycle>("env_day_cycle");
		llassert(sDayCycle);
		// sDayCycle->open();
		// sDayCycle->setFocus(TRUE);
	}
	return sDayCycle;
}

bool LLFloaterDayCycle::isOpen()
{
	if (sDayCycle != NULL) 
	{
		return true;
	}
	return false;
}

void LLFloaterDayCycle::show(LLEnvKey::EScope scope)
{
	LLFloaterDayCycle* dayCycle = instance();
	if(scope != sScope && ((LLView*)dayCycle)->getVisible())
	{
		LLNotifications::instance().add("EnvOtherScopeAlreadyOpen", LLSD(), LLSD());
		return;
	}
	sScope = scope;
	std::string title = sOriginalTitle + " (" + LLEnvManager::getScopeString(sScope) + ")";
	dayCycle->setTitle(title);
	refreshPresetsFromParamManager();
	dayCycle->syncMenu();
	syncSliderTrack();

	// set drop-down menu to match preset of currently-selected keyframe (one is automatically selected initially)
	const std::string& curSldr = sDayCycle->getChild<LLMultiSliderCtrl>("WLDayCycleKeys")->getCurSlider();
	if(strlen(curSldr.c_str()) > 0)	// only do this if there is a curSldr, otherwise we put an invalid entry into the map
	{	
		sDayCycle->getChild<LLComboBox>("WLKeyPresets")->selectByValue(sSliderToKey[curSldr].keyframe.toStringVal());
	}

	// comment in if you want the menu to rebuild each time
	//LLUICtrlFactory::getInstance()->buildFloater(dayCycle, "floater_day_cycle_options.xml");
	//dayCycle->initCallbacks();

	dayCycle->openFloater();
}

// virtual
void LLFloaterDayCycle::onClose(bool app_quitting)
{
	if (sDayCycle)
	{
		lldebugs << "Destorying Day Cycle floater" << llendl;
		sDayCycle = NULL;
	}
}

void LLFloaterDayCycle::onTimeSliderMoved(LLUICtrl* ctrl, void* userData)
{
	LLMultiSliderCtrl* sldr = sDayCycle->getChild<LLMultiSliderCtrl>( 
		"WLTimeSlider");

	/// get the slider value
	F32 val = sldr->getCurSliderValue() / sHoursPerDay;
	
	// set the value, turn off animation
	LLWLParamManager::getInstance()->mAnimator.setDayTime((F64)val);
	LLWLParamManager::getInstance()->mAnimator.deactivate();

	// then call update once
	LLWLParamManager::getInstance()->mAnimator.update(
		LLWLParamManager::getInstance()->mCurParams);
}

void LLFloaterDayCycle::onKeyTimeMoved(LLUICtrl* ctrl, void* userData)
{
	LLComboBox* comboBox = sDayCycle->getChild<LLComboBox>("WLKeyPresets");
	LLMultiSliderCtrl* sldr = sDayCycle->getChild<LLMultiSliderCtrl>("WLDayCycleKeys");
	LLSpinCtrl* hourSpin = sDayCycle->getChild<LLSpinCtrl>("WLCurKeyHour");
	LLSpinCtrl* minSpin = sDayCycle->getChild<LLSpinCtrl>("WLCurKeyMin");

	if(sldr->getValue().size() == 0) {
		return;
	}

	// make sure we have a slider
	const std::string& curSldr = sldr->getCurSlider();
	if(curSldr == "") {
		return;
	}

	F32 time = sldr->getCurSliderValue();

	// check to see if a key exists
	LLWLParamKey key = sSliderToKey[curSldr].keyframe;
	sSliderToKey[curSldr].time = time;

	// if it exists, turn on check box
	comboBox->selectByValue(key.toStringVal());

	// now set the spinners
	F32 hour = (F32)((S32)time);
	F32 min = (time - hour) * 60;

	// handle imprecision
	if(min >= 59) {
		min = 0;
		hour += 1;
	}

	hourSpin->set(hour);
	minSpin->set(min);

	syncTrack();

}

void LLFloaterDayCycle::onKeyTimeChanged(LLUICtrl* ctrl, void* userData)
{
	// if no keys, skipped
	if(sSliderToKey.size() == 0) {
		return;
	}

	LLMultiSliderCtrl* sldr = sDayCycle->getChild<LLMultiSliderCtrl>( 
		"WLDayCycleKeys");
	LLSpinCtrl* hourSpin = sDayCycle->getChild<LLSpinCtrl>( 
		"WLCurKeyHour");
	LLSpinCtrl* minSpin = sDayCycle->getChild<LLSpinCtrl>( 
		"WLCurKeyMin");

	F32 hour = hourSpin->get();
	F32 min = minSpin->get();
	F32 val = hour + min / 60.0f;

	const std::string& curSldr = sldr->getCurSlider();
	sldr->setCurSliderValue(val, TRUE);
	F32 time = sldr->getCurSliderValue() / sHoursPerDay;

	// now set the key's time in the sliderToKey map
	sSliderToKey[curSldr].time = time;

	syncTrack();
}

void LLFloaterDayCycle::onKeyPresetChanged(LLUICtrl* ctrl, void* userData)
{
	// get the time
	LLComboBox* comboBox = sDayCycle->getChild<LLComboBox>( 
		"WLKeyPresets");
	LLMultiSliderCtrl* sldr = sDayCycle->getChild<LLMultiSliderCtrl>( 
		"WLDayCycleKeys");

	// do nothing if no sliders
	if(sldr->getValue().size() == 0) {
		return;
	}

	// change the map

	std::string stringVal = comboBox->getSelectedValue().asString();
	LLWLParamKey newKey(stringVal);
	const std::string& curSldr = sldr->getCurSlider();

	// if null, don't use
	if(curSldr == "") {
		return;
	}

	sSliderToKey[curSldr].keyframe = newKey;

	syncTrack();
}

void LLFloaterDayCycle::onAddKey(void* userData)
{
	LLComboBox* comboBox = sDayCycle->getChild<LLComboBox>( 
		"WLKeyPresets");
	LLMultiSliderCtrl* kSldr = sDayCycle->getChild<LLMultiSliderCtrl>( 
		"WLDayCycleKeys");
	LLMultiSliderCtrl* tSldr = sDayCycle->getChild<LLMultiSliderCtrl>( 
		"WLTimeSlider");
	
	llassert_always(sSliderToKey.size() == kSldr->getValue().size());

	S32 max_sliders;
	switch(sScope)
	{
		case LLEnvKey::SCOPE_LOCAL:
			max_sliders = 20; // *HACK this should be LLWLPacketScrubber::MAX_LOCAL_KEY_FRAMES;
			break;
		case LLEnvKey::SCOPE_REGION:
			max_sliders = 12; // *HACK this should be LLWLPacketScrubber::MAX_REGION_KEY_FRAMES;
			break;
		default:
			max_sliders = (S32)kSldr->getMaxValue();
			break;
	}

	if ((S32)sSliderToKey.size() >= max_sliders)
	{
		LLSD args;
		args["SCOPE"] = LLEnvManager::getScopeString(sScope);
		args["MAX"] = max_sliders;
		LLNotificationsUtil::add("DayCycleTooManyKeyframes", args, LLSD(), LLNotificationFunctorRegistry::instance().DONOTHING);
		return;
	}

	// get the values
	LLWLParamKey newKeyframe(comboBox->getSelectedValue());

	// add the slider key
	addSliderKey(tSldr->getCurSliderValue(), newKeyframe);

	syncTrack();
}

void LLFloaterDayCycle::addSliderKey(F32 time, LLWLParamKey keyframe)
{
	LLMultiSliderCtrl* kSldr = sDayCycle->getChild<LLMultiSliderCtrl>( 
		"WLDayCycleKeys");

	// make a slider
	const std::string& sldrName = kSldr->addSlider(time);
	if(sldrName == "") {
		return;
	}

	// set the key
	LLWLCycleSliderKey newKey(keyframe, kSldr->getCurSliderValue());

	llassert_always(sldrName != LLStringUtil::null);

	// add to map
	sSliderToKey.insert(std::pair<std::string, LLWLCycleSliderKey>(sldrName, newKey));

	llassert_always(sSliderToKey.size() == kSldr->getValue().size());

}

void LLFloaterDayCycle::deletePreset(LLWLParamKey keyframe)
{
	LLMultiSliderCtrl* sldr = sDayCycle->getChild<LLMultiSliderCtrl>("WLDayCycleKeys");

	/// delete any reference
	std::map<std::string, LLWLCycleSliderKey>::iterator curr_preset, next_preset;
	for(curr_preset = sSliderToKey.begin(); curr_preset != sSliderToKey.end(); curr_preset = next_preset)
	{
		next_preset = curr_preset;
		++next_preset;
		if (curr_preset->second.keyframe == keyframe)
		{
			sldr->deleteSlider(curr_preset->first);
			sSliderToKey.erase(curr_preset);
		}
	}
}

void LLFloaterDayCycle::onDeleteKey(void* userData)
{
	if(sSliderToKey.size() == 0)
	{
		return;
	}
	else if(sSliderToKey.size() == 1)
	{
		LLNotifications::instance().add("EnvCannotDeleteLastDayCycleKey", LLSD(), LLSD());
		return;
	}

	LLComboBox* comboBox = sDayCycle->getChild<LLComboBox>( 
		"WLKeyPresets");
	LLMultiSliderCtrl* sldr = sDayCycle->getChild<LLMultiSliderCtrl>("WLDayCycleKeys");

	// delete from map
	const std::string& sldrName = sldr->getCurSlider();
	std::map<std::string, LLWLCycleSliderKey>::iterator mIt = sSliderToKey.find(sldrName);
	sSliderToKey.erase(mIt);

	sldr->deleteCurSlider();

	if(sSliderToKey.size() == 0) {
		return;
	}

	const std::string& name = sldr->getCurSlider();
	comboBox->selectByValue(sSliderToKey[name].keyframe.toLLSD());
	F32 time = sSliderToKey[name].time;

	LLSpinCtrl* hourSpin = sDayCycle->getChild<LLSpinCtrl>("WLCurKeyHour");
	LLSpinCtrl* minSpin = sDayCycle->getChild<LLSpinCtrl>("WLCurKeyMin");

	// now set the spinners
	F32 hour = (F32)((S32)time);
	F32 min = (time - hour) / 60;
	hourSpin->set(hour);
	minSpin->set(min);

	syncTrack();

}