using UnityEngine;
using UnityEngine.InputSystem;
using UnityEngine.UI;

public sealed class InputGlyphImage : InputGlyphBehaviourBase
{
    [SerializeField] private InputActionReference actionReference;
    [SerializeField] private string compositePartName;
    [SerializeField] private Image targetImage;
    [SerializeField] private bool hideIfMissing = false;
    [SerializeField] private GameObject hideTargetObject;

    private Sprite _cachedSprite;

    protected override void OnEnable()
    {
        if (targetImage == null)
        {
            targetImage = GetComponent<Image>();
        }

        base.OnEnable();
    }

    protected override void RefreshGlyph()
    {
        if (actionReference == null || actionReference.action == null || targetImage == null)
        {
            if (targetImage != null && _cachedSprite != null)
            {
                _cachedSprite = null;
                targetImage.sprite = null;
            }

            ApplyVisibility(false);
            return;
        }

        bool hasSprite = GlyphService.TryGetUISpriteForActionPath(actionReference, compositePartName, CurrentCategory, out Sprite sprite);
        if (_cachedSprite != sprite)
        {
            _cachedSprite = sprite;
            targetImage.sprite = sprite;
        }

        ApplyVisibility(hasSprite && sprite != null);
    }

    private void ApplyVisibility(bool hasSprite)
    {
        if (hideTargetObject == null)
        {
            return;
        }

        bool shouldBeActive = !hideIfMissing || hasSprite;
        if (hideTargetObject.activeSelf != shouldBeActive)
        {
            hideTargetObject.SetActive(shouldBeActive);
        }
    }
}