#if INPUTSYSTEM_SUPPORT
using UnityEngine.EventSystems;
using UnityEngine.InputSystem;

namespace UnityEngine.UI
{
    [DisallowMultipleComponent]
    public sealed class HotkeyComponent : MonoBehaviour, IHotkeyTrigger
    {
        [SerializeField] private Component _component;
        [SerializeField] private InputActionReference _hotkeyAction;
        [SerializeField] private EHotkeyPressType _hotkeyPressType = EHotkeyPressType.Performed;

        public InputActionReference HotkeyAction
        {
            get => _hotkeyAction;
            set => _hotkeyAction = value;
        }

        EHotkeyPressType IHotkeyTrigger.HotkeyPressType
        {
            get => _hotkeyPressType;
            set => _hotkeyPressType = value;
        }

        private void Reset()
        {
            AutoAssignTarget();
        }

        private void OnEnable()
        {
            AutoAssignTarget();
            ((IHotkeyTrigger)this).BindHotKey();
        }

        private void OnDisable()
        {
            ((IHotkeyTrigger)this).UnBindHotKey();
        }

        private void OnDestroy()
        {
            ((IHotkeyTrigger)this).UnBindHotKey();
        }

#if UNITY_EDITOR
        private void OnValidate()
        {
            AutoAssignTarget();
        }
#endif

        void IHotkeyTrigger.HotkeyActionTrigger()
        {
            if (!isActiveAndEnabled || _component == null)
            {
                return;
            }

            if (_component is ISubmitHandler)
            {
                ExecuteEvents.Execute(
                    _component.gameObject,
                    new BaseEventData(EventSystem.current),
                    ExecuteEvents.submitHandler
                );
                return;
            }

            Debug.LogWarning($"{nameof(HotkeyComponent)} target must implement {nameof(ISubmitHandler)}: {_component.name}", this);
        }

        private void AutoAssignTarget()
        {
            if (_component != null)
            {
                return;
            }

            if (TryGetComponent(typeof(ISubmitHandler), out Component submitHandler))
            {
                _component = submitHandler;
            }
        }
    }
}
#endif