using UnityEngine;
using Cysharp.Threading.Tasks;

public abstract class UIBase : MonoBehaviour
{
    public abstract string UIName { get; }
    
    [Header("渐变设置")]
    [SerializeField] protected bool useFadeEffect = true;    // 是否使用渐变效果
    [SerializeField] protected float fadeInDuration = 0.15f;  // 渐变显示时长
    [SerializeField] protected float fadeOutDuration = 0.15f; // 渐变隐藏时长
    
    protected CanvasGroupController _fadeController;          // 渐变控制器引用
    
    protected virtual void Awake()
    {
        // 获取或添加渐变控制器
        _fadeController = GetComponent<CanvasGroupController>();
        if (_fadeController == null && useFadeEffect)
        {
            _fadeController = gameObject.AddComponent<CanvasGroupController>();
            Debug.Log($"为 {gameObject.name} 自动添加了CanvasGroupController组件");
        }
    }

    // 子类实现打开时的逻辑
    public virtual void OnShow(object param = null)
    {
        gameObject.SetActive(true);
        
        // 如果启用了渐变效果且有渐变控制器，执行渐变显示
        if (useFadeEffect && _fadeController != null)
        {
            _ = FadeInAsync();
        }
    }

    // 子类实现关闭时的逻辑
    public virtual void OnHide()
    {
        // 如果启用了渐变效果且有渐变控制器，执行渐变隐藏
        if (useFadeEffect && _fadeController != null)
        {
            _ = FadeOutAsync();
        }
        else
        {
            gameObject.SetActive(false);
        }
    }
    
    /// <summary>
    /// 渐变显示（异步方法）
    /// </summary>
    /// <param name="duration">渐变时长，如果为0则使用默认值</param>
    /// <param name="targetCanvasGroup">目标CanvasGroup，如果为null则使用当前对象的CanvasGroup</param>
    /// <returns>异步任务</returns>
    public virtual async UniTask FadeInAsync(float duration = 0f, CanvasGroup targetCanvasGroup = null)
    {
        if (_fadeController != null)
        {
            await _fadeController.FadeInAsync(duration > 0 ? duration : fadeInDuration, null, targetCanvasGroup);
        }
    }
    
    /// <summary>
    /// 渐变隐藏（异步方法）
    /// </summary>
    /// <param name="duration">渐变时长，如果为0则使用默认值</param>
    /// <param name="targetCanvasGroup">目标CanvasGroup，如果为null则使用当前对象的CanvasGroup</param>
    /// <returns>异步任务</returns>
    public virtual async UniTask FadeOutAsync(float duration = 0f, CanvasGroup targetCanvasGroup = null)
    {
        if (_fadeController != null)
        {
            await _fadeController.FadeOutAsync(duration > 0 ? duration : fadeOutDuration, null, targetCanvasGroup);
            // 渐变完成后隐藏游戏对象
            gameObject.SetActive(false);
        }
    }
    
    /// <summary>
    /// 获取渐变控制器
    /// </summary>
    public CanvasGroupController FadeController => _fadeController;
    
    /// <summary>
    /// 检查是否正在渐变中
    /// </summary>
    public bool IsFading => _fadeController != null && _fadeController.IsFading;
}