using System.Collections.Generic;
using Continentis.MainGame.Character;
using Lean.Pool;
using SLSFramework.General;
using UnityEngine;

namespace Continentis.MainGame.UI
{
    public class HUD_CharacterBuffCollection : HUDElementBase
    {
        public RectTransform buffContainer;
        public GameObject buffIconPrefab;
        public List<HUD_CharacterBuffIcon> buffIcons;
        
        public override void UpdateHud()
        {
            foreach (var buffIcon in buffIcons)
            {
                buffIcon.UpdateIcon();
            }
        }
        
        public void AddBuffIcon(CharacterBuffBase buff)
        {
            HUD_CharacterBuffIcon buffIcon = LeanPool.Spawn(buffIconPrefab, buffContainer).GetComponent<HUD_CharacterBuffIcon>();
            buffIcon.Initialize(buff);
            buffIcons.AddByPriority(buffIcon);
            buffIcon.transform.SetSiblingIndex(buffIcons.IndexOf(buffIcon));
            UpdateHud();
        }
            
        public void RemoveBuffIcon(CharacterBuffBase buff)
        {
            HUD_CharacterBuffIcon buffIcon = buffIcons.Find(x => x.buff == buff);
            if (buffIcon != null)
            {
                buffIcons.Remove(buffIcon);
                buff.iconSubmodule.buffIcon = null;
                LeanPool.Despawn(buffIcon.gameObject);
            }
            else
            {
                // 如果逻辑上要移除 Buff，但在 UI 列表里找不到对应的 Icon，说明出事了。
                // 这可能是导致你看到“Buff图标没有正常显示”的另一个原因（状态不同步）。
                Debug.LogWarning($"[HUD] 尝试移除 Buff {buff.contentSubmodule.displayName} 的图标，但在 buffIcons 列表中未找到匹配项！可能存在状态脱节。");
        
                // 可选：强制清理一遍列表中的空引用（自我修复）
                // CleanUpInvalidIcons(); 
            }
            UpdateHud();
        }
    }
}