Getting turning direction for character without using Input

I want to assign different animations to my character when he is walking and turning left/right.

My problem is that I’m using a NavMeshAgent so I cant get the Input values from the keyboard to know how much he is turning or not.
How could I find it via scripting?

Thanks in advance!

Found the answer, here it is if anyone is interested:

function Start () {
    lastFrameAngle = actorParent.eulerAngles.y;
function CalculateDirection(){    //running it on Update
	var currentFrameAngle : float = actorParent.eulerAngles.y;
	angleDifference = currentFrameAngle - lastFrameAngle;
	lastFrameAngle = currentFrameAngle;