#if UNITY_EDITOR
using System;
using System.Collections;
using System.Collections.Generic;
using UguiToolkit;
using UguiToolkit.Editor;
using UnityEditor;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.UIElements;

namespace UguiToolkit.Editor
{
    public class PrefabEntity : BaseEntity<Transform, LayoutInfo.PrefabInfo>
    {
        protected override void OnApplyTransform(Transform tf)
        {
            var position = ElementInfo.Position;
            tf.position = StageManager.Instance.PrefabContentsRoot.transform.TransformPoint(new Vector3(position.x, position.y, 0));
        }

        public override void InitPreview()
        {
            // 创建预制体
            var asset = GetPrefabAsset(GetCommonDirPath());
            if (asset) {
                var go = PrefabUtility.InstantiatePrefab(asset, transform) as GameObject;
                EntityHelper.UpdateHierarchyAndSceneVisibilityOfEntity(false, go);

                go.name = asset.name;
                var _tf = go.transform;
                _tf.localPosition = Vector3.zero;
                _tf.localRotation = Quaternion.identity;
                _tf.localScale = Vector3.one;
            }

            ApplyTransform(transform);
        }

        protected override void OnApplyData(Transform ui)
        {
            ApplyTransform(ui);
        }

        public GameObject GetPrefabAsset(string commonDirPath)
        {
            var elementInfo = ElementInfo;
            var guids = AssetDatabase.FindAssets(elementInfo.prefabName, new string[] { commonDirPath });
            if (guids.Length > 0)
            {
                return AssetDatabase.LoadAssetAtPath<GameObject>(AssetDatabase.GUIDToAssetPath(guids[0]));
            }
            else
            {
                Debug.LogError($"[PrefabInfo.GetPrefabPath] 通用组件{elementInfo.prefabName} 不存在 {commonDirPath}");
                return null;
            }
        }

        public static bool IsPrefab(GameObject asset)
        {
            return PrefabUtility.IsAnyPrefabInstanceRoot(asset);
        }

        public static bool IsCommonPrefab(GameObject asset)
        {
            var setting = GlobalManager.Instance.setting;
            return PrefabUtility.IsAnyPrefabInstanceRoot(asset) && PrefabUtility.GetPrefabAssetPathOfNearestInstanceRoot(asset).StartsWith(setting.commonPrefabForUIDirPath);
        }

        public static string GetCommonDirPath()
        { 
            var setting = GlobalManager.Instance.setting;
            return setting.commonPrefabForUIDirPath;
        }
    }
}

#endif