using UnityEngine;

public class DoorController : MonoBehaviour
{
    [Header("Çʼö ¿¬°á")]
    public Transform player;
    public GameObject interactionCanvas; // World Space ĵ¹ö½º

    [Header("¼³Á¤")]
    public string targetSceneName = "NextMap"; // À̵¿ÇÒ ¾À À̸§
    public float interactDistance = 4f;
    public Vector3 worldOffset = new Vector3(0, 1.2f, 0); // ¹® Áß¾Ó ³ôÀÌ·Î Á¶Á¤

    [Header("¿¬Ãâ ¼³Á¤")]
    public float fadeSpeed = 5f;
    public float floatSpeed = 2f;
    public float floatAmplitude = 0.1f;

    private CanvasGroup canvasGroup;
    private float currentAlpha = 0f;
    private Transform mainCamTransform;

    void Start()
    {
        mainCamTransform = Camera.main.transform;

        canvasGroup = interactionCanvas.GetComponent<CanvasGroup>();
        if (canvasGroup == null)
            canvasGroup = interactionCanvas.AddComponent<CanvasGroup>();

        canvasGroup.alpha = 0;
    }

    void Update()
    {
        if (player == null || interactionCanvas == null) return;

        float distance = Vector3.Distance(player.position, transform.position);
        float targetAlpha = (distance <= interactDistance) ? 1f : 0f;

        currentAlpha = Mathf.MoveTowards(currentAlpha, targetAlpha, Time.deltaTime * fadeSpeed);
        canvasGroup.alpha = currentAlpha;

        if (currentAlpha > 0.01f)
        {
            // ºôº¸µå: Ç×»ó Ä«¸Þ¶ó¸¦ ¹Ù¶óº½
            interactionCanvas.transform.forward = mainCamTransform.forward;

            // µÕµÕ ¶ß´Â È¿°ú
            float yOffset = Mathf.Sin(Time.time * floatSpeed) * floatAmplitude;
            interactionCanvas.transform.position = transform.position + worldOffset + new Vector3(0, yOffset, 0);

            // FÅ° ÀÔ·Â ½Ã ÆäÀÌµå ·Îµù ½ÃÀÛ
            if (targetAlpha > 0.5f && Input.GetKeyDown(KeyCode.F))
            {
                SceneLoader.Instance.LoadSceneWithFade(targetSceneName);
                interactionCanvas.SetActive(false); // ·Îµù ½ÃÀÛ ½Ã ¾ÆÀÌÄÜ ¼û±è
            }
        }
    }
}