using UnityEngine;
#if ENABLE_INPUT_SYSTEM
using UnityEngine.InputSystem;
#endif

namespace UI.PanelStack
{
    public class UIPanelStackInput : MonoBehaviour
    {
        [SerializeField] private bool enabledInput = true;

        private void Update()
        {
            if (!enabledInput) { return; }
            if (UIPanelStack.Instance == null) { return; }

            if (IsEscapePressed())
            {
                if (!UIPanelStack.Instance.CloseTop())
                {
                    UIPanelStack.Instance.TryOpenOnEscapeWhenEmpty();
                }
            }
        }

        private bool IsEscapePressed()
        {
#if ENABLE_INPUT_SYSTEM
            return Keyboard.current != null && Keyboard.current.escapeKey.wasPressedThisFrame;
#else
            return Input.GetKeyDown(KeyCode.Escape);
#endif
        }
    }
}