using TMPro;
using UnityEngine;
using UnityEngine.EventSystems;

namespace RR.Common.UI
{
    /// <summary>
    /// Меняет цвет TMP-текста внутри кнопки при фокусе и наведении.
    /// </summary>
    public class ButtonTextFocusColor : MonoBehaviour, ISelectHandler, IDeselectHandler, IPointerEnterHandler, IPointerExitHandler
    {
        [SerializeField] private TextMeshProUGUI targetText;
        [SerializeField] private Color normalColor = new(0f, 0.29411766f, 0.1882353f, 1f);
        [SerializeField] private Color focusedColor = Color.white;

        private bool _isPointerInside;
        private bool _isSelected;

        private void Awake()
        {
            ApplyCurrentState();
        }

        public void OnSelect(BaseEventData eventData)
        {
            _isSelected = true;
            ApplyCurrentState();
        }

        public void OnDeselect(BaseEventData eventData)
        {
            _isSelected = false;
            ApplyCurrentState();
        }

        public void OnPointerEnter(PointerEventData eventData)
        {
            _isPointerInside = true;
            ApplyCurrentState();
        }

        public void OnPointerExit(PointerEventData eventData)
        {
            _isPointerInside = false;
            ApplyCurrentState();
        }

        private void ApplyCurrentState()
        {
            if (targetText == null)
                return;

            targetText.color = (_isSelected || _isPointerInside) ? focusedColor : normalColor;
        }

#if UNITY_EDITOR
        private void Reset()
        {
            targetText = GetComponentInChildren<TextMeshProUGUI>(true);
        }
#endif
    }
}