using UnityEngine;

public class ChaseRunEnemy : MonoBehaviour
{
    public Animator m_animator;
    public Rigidbody rb;
    public float moveSpeed;
    public float stopDistance = 1.5f;

    private Transform player;
    private float stopDistanceSqr;
    private bool isStopped = false;
    [Header("Speed Source")]
    public bool usePlayerSpeed = false; // set to false so enemy won't copy the wolf's boost

    [SerializeField] private ParticleSystem LeftFootDustPoof, RightFootDustPoof;

    private void Awake()
    {
        rb = GetComponent<Rigidbody>();

        GameObject playerObj = GameObject.FindGameObjectWithTag("Player");
        if (playerObj != null)
        {
            player = playerObj.transform;
        }
        else
        {
            Debug.LogError("[ChaseRunEnemy] Player not found in scene.");
        }

        stopDistanceSqr = stopDistance * stopDistance; // Cache squared distance
    }

    private void OnEnable()
    {
        if (usePlayerSpeed)
            ChasePlayerController.OnMoveSpeedChanged += UpdateMoveSpeed;
    }

    private void OnDisable()
    {
        if (usePlayerSpeed)
            ChasePlayerController.OnMoveSpeedChanged += UpdateMoveSpeed;
    }

    private void UpdateMoveSpeed(float speed)
    {
        moveSpeed = speed;
    }

    private void FixedUpdate()
    {
        if (player == null) return;

        Vector3 toPlayer = player.position - transform.position;
        float distanceSqr = toPlayer.sqrMagnitude;

        if (distanceSqr <= stopDistanceSqr)
        {
            if (!isStopped)
            {
                m_animator.SetBool("isStop", true);
                isStopped = true;
            }
            return;
        }

        if (isStopped)
        {
            m_animator.SetBool("isStop", false);
            isStopped = false;
        }

        MoveForward();
    }

    private void MoveForward()
    {
        rb.MovePosition(rb.position + Vector3.back * moveSpeed * Time.fixedDeltaTime);
    }

    public void LeftFootOnFloor()
    {
        Debug.Log("Left Foot on floor");
        LeftFootDustPoof.Stop();
        LeftFootDustPoof.Play();
    }
    public void RightFootOnFloor()
    {
        Debug.Log("Right Foot on floor");
        RightFootDustPoof.Stop();
        RightFootDustPoof.Play();
    }
    
}