#ifndef AnimationTrack_h__
#define AnimationTrack_h__

#include "AnimationFrame.h"
#include "LString.h"
#include "math/LifeMath.h"

namespace LifeGraphics
{
	class AnimationTrack
	{
	public:
		String Name;
		int Layer;
		AnimationFrame* Frames;
		BoneTransform* transformations;
		int FramesCount;
		int ID;
		int prev;
		float Weight;
		bool Enabled;
		float TrackTime;
		bool Loop;
		float TrackPosition;
		bool Playing;

		AnimationTrack(int framesCount)
			:Layer(0), ID(0), Weight(1.0f),TrackPosition(0.0f), prev(0)
		{
			Frames = new AnimationFrame[framesCount];
			transformations = new BoneTransform[framesCount];
			FramesCount = framesCount;
		}

		~AnimationTrack()
		{
			if(Frames)
				delete[] Frames;
			if(transformations)
				delete[] transformations;
		}

		void setFrame(AnimationFrame& frame, int id)
		{
			Frames[id] = frame;
		}

		const BoneTransform* GetTransform()
		{
			/*if (TrackPosition > Frames[FramesCount - 1].time)
			if (Loop)
			TrackPosition = 0.0f;
			else
			TrackPosition = Frames[FramesCount - 1].time;*/
			//if(TrackPosition < 0.0f || TrackPosition >  Frames[FramesCount - 1].time)
			//printf("OMFGNAH!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");

			for (int i = 0; i < FramesCount; i++)
			{
				if (Frames[i].time == TrackPosition)
				{
					Frames[i].getTransformations(transformations);
					return transformations;
				}

				int next = i + 1;
				if(next >= FramesCount)
					next = 0;

				if (TrackPosition > Frames[i].time && TrackPosition < Frames[next].time)
				{
					float amount = (TrackPosition - Frames[i].time) / (Frames[next].time - Frames[i].time);
					InterpolateFrames(Frames + i, Frames + (next), amount);
					return transformations;
				}
			}
			return transformations;
		}

		void InterpolateFrames(AnimationFrame* start, AnimationFrame* end, float amount)
		{
			for (int i = 0; i < start->boneCount; i++)
			{
				BoneTransform newTransform;

				//BoneTransform tr1 = start->getTransform(i);
				BoneTransform tr2 = end->getTransform(i);

				/*	QuatSLerp(tr1.Rotation, tr2.Rotation, amount, newTransform.Rotation);
				Vec3Lerp(tr1.Translation, tr2.Translation, amount, newTransform.Translation);

				if(amount < 0.0f | amount > 1.0f)
				{
				printf("PIZDEC!");
				}

				printf("Select frame: %i,  Frame time: %f\n", end->name, end->time);
				*/
				newTransform.boneId = tr2.boneId;

				newTransform.Translation = tr2.Translation;
				newTransform.Rotation = tr2.Rotation;
				transformations[i] = newTransform;
			}
		}

		void AdvanceTime(float dt)
		{
			if (Playing && Weight >0)
			{
				TrackPosition += dt;
				//	TrackPosition = Frames[1].time;
				//printf("Frame one id: %i\n", Frames[1].name);
				if (TrackPosition > Frames[FramesCount - 1].time)
				{
					if (Loop)
					{
						//DoEvents(prevPos, TrackTime);
						TrackPosition = TrackPosition - Frames[FramesCount - 1].time;
						//OnTrackEnd();
						//OnTrackStart();
						//
					}
					else
					{
						TrackPosition = TrackTime;
						//OnTrackEnd();
						Playing = false;
					}
				}
				if (TrackPosition < 0)
				{
					TrackPosition = 0;
					//	OnTrackStart();
				}
				if (TrackPosition == 0)
				{
					//OnTrackStart();
				}
				else
				{
					//DoEvents(prevPos, TrackPosition);
				}
			}
		}

		void Stop()
		{
			Playing = false;
		}

		void Play()
		{
			if (TrackPosition >= TrackTime)
				TrackPosition = 0;
			Playing = true;
		}

		void Reset()
		{
			TrackPosition = 0;
		}
	};
}
#endif // AnimationTrack_h__