using System;
using Cysharp.Threading.Tasks;
using UnityEngine;

namespace AlicizaX.UI.Runtime
{
    [DisallowMultipleComponent]
    public abstract class UIHolderObjectBase : UnityEngine.MonoBehaviour
    {
        public Action OnWindowInitEvent;
        public Action OnWindowBeforeShowEvent;
        public Action OnWindowAfterShowEvent;
        public Action OnWindowBeforeClosedEvent;
        public Action OnWindowAfterClosedEvent;
        public Action OnWindowDestroyEvent;


#if ALICIZAX_UI_ANIMATION_SUPPORT
        public async UniTask PlayAnimtion(string name)
        {
            if (AnimationFlow == null)
            {
                AnimationFlow = transform.GetComponent<AnimationFlow.Runtime.AnimationFlow>();
            }

            await AnimationFlow.PlayAsync(name);
        }
#endif


        private GameObject _target;

        /// <summary>
        /// UI实例资源对象。
        /// </summary>
        public GameObject Target => _target ??= gameObject;


        private RectTransform _rectTransform;

        /// <summary>
        /// 窗口矩阵位置组件。
        /// </summary>
        public RectTransform RectTransform => _rectTransform ??= _target.transform as RectTransform;

        /// <summary>
        /// 可见性
        /// </summary>
        public bool Visible
        {
            get => Target.activeSelf;

            internal set { _target.SetActive(value); }
        }

#if ALICIZAX_UI_ANIMATION_SUPPORT
        private AnimationFlow.Runtime.AnimationFlow AnimationFlow;
#endif


        public virtual void Awake()
        {
            _target = gameObject;
#if ALICIZAX_UI_ANIMATION_SUPPORT
            AnimationFlow = GetComponent<AnimationFlow.Runtime.AnimationFlow>();
#endif
        }

        private bool _isAlive = true;

        /// <summary>
        /// Checks if this holder is still valid (not destroyed).
        /// Use this instead of null check for better clarity.
        /// </summary>
        public bool IsValid()
        {
            return this != null && _isAlive;
        }

        private void OnDestroy()
        {
            _isAlive = false;
        }
    }
}