/* Copyright (C) 2009 Wildfire Games.
 * This file is part of 0 A.D.
 *
 * 0 A.D. is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 *
 * 0 A.D. 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with 0 A.D.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "precompiled.h"

#include "MessageHandler.h"
#include "../CommandProc.h"
#include "graphics/Camera.h"
#include "graphics/CinemaTrack.h"
#include "graphics/GameView.h"
#include "ps/Game.h"
#include "ps/CStr.h"
#include "ps/CLogger.h"
#include "ps/Filesystem.h"
#include "maths/MathUtil.h"
#include "maths/Quaternion.h"
#include "lib/res/graphics/ogl_tex.h"


namespace AtlasMessage {


sCinemaPath ConstructCinemaPath(const CCinemaPath* source)
{
	sCinemaPath path;
	const CCinemaData* data = source->GetData();
	path.mode = data->m_Mode;
	path.style = data->m_Style;
	path.growth = data->m_Growth;
	path.timescale = data->m_Timescale;
	path.change = data->m_Switch;

	return path;
}
CCinemaData ConstructCinemaData(const sCinemaPath& path)
{
	CCinemaData data;
	data.m_Growth = data.m_GrowthCount = path.growth;
	data.m_Switch = path.change;
	data.m_Mode = path.mode;
	data.m_Style = path.style;
	
	return data;
}
sCinemaSplineNode ConstructCinemaNode(const SplineData& data)
{
	sCinemaSplineNode node;
	node.px = data.Position.X;
	node.py = data.Position.Y;
	node.pz = data.Position.Z;
	
	node.rx = data.Rotation.X;
	node.ry = data.Rotation.Y;
	node.rz = data.Rotation.Z;
	node.t = data.Distance;
	
	return node;
}

std::vector<sCinemaPath> GetCurrentPaths()
{
	const std::map<CStrW, CCinemaPath>& paths = g_Game->GetView()->GetCinema()->GetAllPaths();
	std::vector<sCinemaPath> atlasPaths;

	for ( std::map<CStrW, CCinemaPath>::const_iterator it=paths.begin(); it!=paths.end(); ++it  )
	{
		sCinemaPath path = ConstructCinemaPath(&it->second);	
		path.name = it->first;
		
		const std::vector<SplineData>& nodes = it->second.GetAllNodes();
		std::vector<sCinemaSplineNode> atlasNodes;
			
		for ( size_t i=0; i<nodes.size(); ++i )
			atlasNodes.push_back( ConstructCinemaNode(nodes[i]) );
		
		if ( !atlasNodes.empty() )
		{
			float back = atlasNodes.back().t;
			if ( atlasNodes.size() > 2 )
			{
				for ( size_t i=atlasNodes.size()-2; i>0; --i )
					atlasNodes[i].t = atlasNodes[i-1].t;
			}
			atlasNodes.back().t = atlasNodes.front().t;
			atlasNodes.front().t = back;
		}
		path.nodes = atlasNodes;
		atlasPaths.push_back(path);
	}
	return atlasPaths;
}

void SetCurrentPaths(const std::vector<sCinemaPath>& atlasPaths)
{
	std::map<CStrW, CCinemaPath> paths;
	
	for ( std::vector<sCinemaPath>::const_iterator it=atlasPaths.begin(); it!=atlasPaths.end(); ++it )
	{
		CStrW pathName(*it->name);
		paths[pathName] = CCinemaPath();
		paths[pathName].SetTimescale(it->timescale);

		const sCinemaPath& atlasPath = *it;
		const std::vector<sCinemaSplineNode> nodes = *atlasPath.nodes;
		TNSpline spline;
		CCinemaData data = ConstructCinemaData(atlasPath);
	
 		for ( size_t j=0; j<nodes.size(); ++j )
		{	
			spline.AddNode( CVector3D(nodes[j].px, nodes[j].py, nodes[j].pz), 
							CVector3D(nodes[j].rx, nodes[j].ry, nodes[j].rz), nodes[j].t );
		}
		paths[pathName] = CCinemaPath(data, spline);
	}

	g_Game->GetView()->GetCinema()->SetAllPaths(paths);
}
QUERYHANDLER(GetCameraInfo)
{
	sCameraInfo info;
	CMatrix3D* cam = &g_Game->GetView()->GetCamera()->m_Orientation;

	CQuaternion quatRot = cam->GetRotation();
	quatRot.Normalize();
	CVector3D rotation = quatRot.ToEulerAngles();
	rotation.X = RADTODEG(rotation.X); 
	rotation.Y = RADTODEG(rotation.Y);
	rotation.Z = RADTODEG(rotation.Z);
	CVector3D translation = cam->GetTranslation();
	
	info.pX = translation.X;
	info.pY = translation.Y;
	info.pZ = translation.Z;
	info.rX = rotation.X;
	info.rY = rotation.Y;
	info.rZ = rotation.Z;
	msg->info = info;
}

MESSAGEHANDLER(CinemaEvent)
{
	CCinemaManager* manager = g_Game->GetView()->GetCinema();
	
	if ( msg->mode == eCinemaEventMode::SMOOTH )
		manager->OverridePath(*msg->path);	
	else if ( msg->mode == eCinemaEventMode::IMMEDIATE_PATH )
		manager->MoveToPointAt(msg->t);
	else if ( msg->mode == eCinemaEventMode::RESET )
	{
//		g_Game->GetView()->ResetCamera();
	}
	else if ( msg->mode == eCinemaEventMode::SELECT )
		manager->SetCurrentPath(*msg->path, msg->drawCurrent, msg->lines);
	else
		ENSURE(false);
}
			
BEGIN_COMMAND(SetCinemaPaths)
{
	std::vector<sCinemaPath> m_oldPaths, m_newPaths;
	void Do()
	{
		m_oldPaths = GetCurrentPaths();
		m_newPaths = *msg->paths;
		Redo();
	}
	void Redo()
	{
		SetCurrentPaths(m_newPaths);
	}
	void Undo()
	{
		SetCurrentPaths(m_oldPaths);
	}
};
END_COMMAND(SetCinemaPaths)

QUERYHANDLER(GetCinemaPaths)
{
	msg->paths = GetCurrentPaths();
}

}