Play Unity legacy animation on click, click again to play animation in reverse. click and toggle animation

TogglePlayAnimation

using UnityEngine;

public class AnimationController : MonoBehaviour
{

    [SerializeField]
    Animation anim;

    [SerializeField]
    string clipName;

    private float animationSpeed = 0.5f;
      

    private void Reset()
    {
        anim = GetComponent<Animation>();
        clipName = anim.name.ToString();
    }

    bool isForwad = true;

    void Update()
    {
    
        if (Input.GetMouseButtonDown(0))
        {
            //playing forwad animation
            if (isForwad)
            {
                animationSpeed = 0.5f;
                anim.Play();
                anim[clipName].speed = animationSpeed;
            }
            else
            {
                //if the Animation backward mode and time is zero then animation has finsihed.
                if (anim[clipName].time == 0) {
                    anim[clipName].time = anim[clipName].length;
                }

                animationSpeed = -0.5f;
                anim.Play();

                anim[clipName].speed = animationSpeed;
            }

            isForwad = !isForwad;

        }
        
    }

}