#include "ehs/io/mdl/AnimBone.h"

#include <algorithm>

namespace ehs
{
	AnimBone::AnimBone()
		: boneId(0xFF)
	{
	}

	AnimBone::AnimBone(const UInt_8 boneId)
		: boneId(boneId)
	{
	}

	AnimBone::AnimBone(const UInt_8 boneId, const UInt_64 size)
		: boneId(boneId), keyFrames(size)
	{
	}

	AnimBone::AnimBone(const UInt_8 boneId, Array<KeyFrame> keyFrames)
		: boneId(boneId), keyFrames(std::move(keyFrames))
	{
	}

	AnimBone::AnimBone(const AnimBone& anim)
		: boneId(anim.boneId), keyFrames(anim.keyFrames)
	{
	}

	AnimBone::AnimBone(AnimBone&& anim) noexcept
		: boneId(anim.boneId), keyFrames(std::move(anim.keyFrames))
	{
		anim.boneId = 0xFF;
	}

	AnimBone& AnimBone::operator=(AnimBone&& anim) noexcept
	{
		if (this == &anim)
			return *this;

		boneId = anim.boneId;
		keyFrames = std::move(anim.keyFrames);

		anim.boneId = 0xFF;

		return *this;
	}

	AnimBone& AnimBone::operator=(const AnimBone& anim)
	{
		if (this == &anim)
			return *this;

		boneId = anim.boneId;
		keyFrames = anim.keyFrames;

		return *this;
	}

	UInt_8 AnimBone::GetBoneId() const
	{
		return boneId;
	}

	Array<KeyFrame> AnimBone::GetKeyFrames() const
	{
		return keyFrames;
	}

	Array<KeyFrame>& AnimBone::GetKeyFrames()
	{
		return keyFrames;
	}

	float AnimBone::GetPrevAndNext(KeyFrame& prev, KeyFrame& next, const float elapsed) const
	{
		prev = keyFrames[0];
		next = keyFrames[0];
		for (UInt_64 i = 1; i < keyFrames.Size(); ++i)
		{
			next = keyFrames[i];
			if (keyFrames[i].GetTimeStamp() > elapsed)
				break;
			prev = keyFrames[i];
		}

		return (elapsed - prev.GetTimeStamp()) / (next.GetTimeStamp() - prev.GetTimeStamp());
	}
}