using System;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.InputSystem;

namespace DDD
{
    public class PopupUi : BaseUi
    {
        protected UiInputBindingSo _uiInputBindingSo;
        protected readonly List<(InputAction action, Action<InputAction.CallbackContext> handler)> _registeredHandlers = new();
        
        protected override async void TryRegister()
        {
            base.TryRegister();
            UiManager.Instance.RegisterPopupUI(this);
            
            // So의 이름을 통일 : TestUi_UiInputBindingSo
            string addressableKey = $"{GetType().Name}_{DataConstants.UiInputBindingSo}";
            _uiInputBindingSo = await AssetManager.LoadAsset<UiInputBindingSo>(addressableKey);
            Debug.Assert(_uiInputBindingSo != null, "_uiInputBindingSo != null");

            foreach (var binding in _uiInputBindingSo.Bindings)
            {
                if (binding.InputAction == null) continue;

                var action = binding.InputAction.action;
                if (action == null) continue;

                var handler = new Action<InputAction.CallbackContext>(ctx =>
                {
                    if (UiManager.Instance.IsTopPopup(this))
                    {
                        OnInputPerformed(binding.ActionName, ctx);
                    }
                });

                action.Enable();
                action.performed += handler;

                _registeredHandlers.Add((action, handler));
            }
        }
        
        protected override void TryUnregister()
        {
            base.TryUnregister();
            UiManager.Instance.UnregisterPopupUI(this);
            
            foreach (var (action, handler) in _registeredHandlers)
            {
                if (action != null)
                {
                    action.performed -= handler;
                    action.Disable();
                }
            }

            _registeredHandlers.Clear();
        }

        public override void Open()
        {
            base.Open();
            
            transform.SetAsLastSibling();
            
            if (UiManager.Instance.IsTopPopup(this))
            {
                InputManager.Instance.SwitchCurrentActionMap(_uiInputBindingSo.InputActionMaps);
            }
        }

        protected virtual void OnInputPerformed(string actionName, InputAction.CallbackContext ctx) { }
        
        public InputActionMaps GetInputActionMaps() => _uiInputBindingSo.InputActionMaps;
    }
}