using UnityEngine;
using YooAsset;

namespace HotUpdate.UI
{
    /// <summary>
    /// UI Prefab 加载：编辑器 AssetDatabase；运行时优先 DefaultPackage 寻址。
    /// </summary>
    public sealed class UiPrefabLoader
    {
        public const string PrefabFolder = "Assets/Bundles/UI/Prefab";

        public GameObject Load(string prefabName)
        {
            if (string.IsNullOrEmpty(prefabName)) return null;

            if (YooAssets.IsInitialized)
            {
                // DefaultPackage 或任意已初始化包
                var packages = new[] { "DefaultPackage", "Art" };
                foreach (var name in packages)
                {
                    if (!YooAssets.TryGetPackage(name, out var pkg)) continue;
                    if (pkg.InitializeStatus != EOperationStatus.Succeeded) continue;
                    var handle = pkg.LoadAssetSync<GameObject>(prefabName);
                    if (handle.Status == EOperationStatus.Succeeded)
                        return handle.GetAssetObject<GameObject>();
                }
            }

#if UNITY_EDITOR
            var path = $"{PrefabFolder}/{prefabName}.prefab";
            return UnityEditor.AssetDatabase.LoadAssetAtPath<GameObject>(path);
#else
            return null;
#endif
        }
    }
}