using UnityEngine;
using Pixelplacement;

public class LawnMowerChaseBehaviour : MonoBehaviour
{
    public Spline ChaseSpline;
    public Transform LawnMowerObject;
    public float chaseDuration;
    public float chaseDelay;

    private Vector3 _originalScale;
    private bool _facingRight = true;
    private bool _movingForward = true;
    private float _lastPercentage = 0f;
    private const float AnchorThreshold = 0.1f; // Tolerance for anchor detection

    void Start()
    {
        _originalScale = LawnMowerObject.localScale;

        Tween.Spline(
            ChaseSpline,
            LawnMowerObject,
            0,
            1,
            false,
            chaseDuration,
            chaseDelay,
            Tween.EaseInOut,
            Tween.LoopType.PingPong,
            onComplete: OnTweenComplete
        );
    }

    private void OnTweenComplete()
    {
        _movingForward = !_movingForward;
        Flip(_movingForward);
    }

    private void OnTweenUpdate()
    {
        // Find the current percentage along the spline
        float percentage = ChaseSpline.ClosestPoint(LawnMowerObject.position);

        // Detect anchor arrival and flip accordingly
        if (_facingRight && percentage >= 1f - AnchorThreshold)
        {
            Flip(false); // Face left at end anchor
            _facingRight = false;
        }
        else if (!_facingRight && percentage <= AnchorThreshold)
        {
            Flip(true); // Face right at start anchor
            _facingRight = true;
        }

        _lastPercentage = percentage;
    }

    private void Flip(bool faceRight)
    {
        var scale = _originalScale;
        scale.x = Mathf.Abs(scale.x) * (faceRight ? 1 : -1);
        LawnMowerObject.localScale = scale;
    }

    void Update() { }
}