using UnityEngine;

[DisallowMultipleComponent]
public class MovingMazeWall : MonoBehaviour
{
    [Header("Movement")]
    [Tooltip("로컬 좌표 기준 이동 거리입니다.")]
    [SerializeField] private Vector3 localMoveOffset = new Vector3(0f, 0f, 2f);

    [SerializeField] private float speed = 1f;

    [Header("Timing")]
    [Tooltip("움직이기 전 대기 시간입니다.")]
    [SerializeField] private float startDelay = 0f;

    [Tooltip("여러 벽이 같은 타이밍으로 움직이지 않게 하는 시간 오프셋입니다.")]
    [SerializeField] private float phaseOffset = 0f;

    [Header("Options")]
    [SerializeField] private bool moveOnStart = true;
    [SerializeField] private bool useUnscaledTime = false;

    private Vector3 startLocalPosition;
    private bool isMoving;
    private float moveStartTime;

    private void Awake()
    {
        startLocalPosition = transform.localPosition;
        isMoving = moveOnStart;
        moveStartTime = GetCurrentTime();
    }

    private void Update()
    {
        if (!isMoving)
            return;

        float time = GetCurrentTime() - moveStartTime + phaseOffset - startDelay;

        if (time < 0f)
            return;

        float t = Mathf.PingPong(time * speed, 1f);

        transform.localPosition = Vector3.Lerp(
            startLocalPosition,
            startLocalPosition + localMoveOffset,
            t
        );
    }

    private float GetCurrentTime()
    {
        return useUnscaledTime ? Time.unscaledTime : Time.time;
    }

    public void StartMove()
    {
        isMoving = true;
        moveStartTime = GetCurrentTime();
    }

    public void StopMove()
    {
        isMoving = false;
    }

    public void ResetWallPosition()
    {
        transform.localPosition = startLocalPosition;
        moveStartTime = GetCurrentTime();
    }

    public void ResetWallPosition(bool keepMoving)
    {
        transform.localPosition = startLocalPosition;
        isMoving = keepMoving;
        moveStartTime = GetCurrentTime();
    }

    public void ResetAndStop()
    {
        ResetWallPosition(false);
    }

    public void ResetAndStart()
    {
        ResetWallPosition(true);
    }

    public void ResetToInitialState()
    {
        ResetWallPosition(moveOnStart);
    }

#if UNITY_EDITOR
    private void OnValidate()
    {
        speed = Mathf.Max(0f, speed);
        startDelay = Mathf.Max(0f, startDelay);
    }
#endif
}