using TMPro;
using UnityEngine;
using UnityEngine.UI;
using VRShopping.Player;

namespace VRShopping.UI
{
    // 왼쪽 손목에 부착되는 허기 게이지 HUD.
    // PlayerHunger.Instance에 자동 구독.
    public class HungerHud : MonoBehaviour
    {
        [SerializeField] private Image _fillImage;        // type=Filled 권장
        [SerializeField] private TMP_Text _text;          // 옵션, "80 / 100" 형식
        [SerializeField] private PlayerHunger _bound;

        private void Start()
        {
            _bound.OnHungerChanged += HandleChanged;
            HandleChanged(_bound.Current, _bound.Max);
        }

        private void OnDestroy()
        {
            if (_bound != null)
            {
                _bound.OnHungerChanged -= HandleChanged;
                _bound = null;
            }
        }

        private void HandleChanged(float current, float max)
        {
            if (_fillImage != null && max > 0f)
                _fillImage.fillAmount = Mathf.Clamp01(current / max);

            if (_text != null)
                _text.text = $"{Mathf.CeilToInt(current)} / {Mathf.CeilToInt(max)}";
        }
    }
}