#if UNITY_EDITOR
using System.Collections.Generic;
using UnityEngine;

namespace UguiToolkit.Editor
{
    [ExecuteAlways]
    public class EntityManager : MonoBehaviour, IManager
    {
        private PanelCache m_panelCache;
        private Transform entityRoot;

        private List<ImageEntity> imageEntities;
        private List<TextEntity> textEntities;

        private void Start()
        {
            GlobalManager.Instance.OnShowHierarchyOfEntityChange += UpdateHierarchyOfEntityAllEntity;
        }

        private void OnDestroy()
        {
            GlobalManager.Instance.OnShowHierarchyOfEntityChange -= UpdateHierarchyOfEntityAllEntity;
        }

        public void InitAllEntity(PanelCache panelCache)
        {
            this.m_panelCache = panelCache;

            // 创建所有实例
            CreateAllEntity();
        }

        private void UpdateHierarchyOfEntityAllEntity(bool show)
        {
            UpdateHierarchyOfEntity(show, entityRoot.gameObject);
            foreach (var entity in imageEntities) UpdateHierarchyOfEntity(show, entity.gameObject);
            foreach (var entity in textEntities) UpdateHierarchyOfEntity(show, entity.gameObject);
        }

        private void UpdateHierarchyOfEntity(in bool show, in GameObject entity) 
        {
            EntityHelper.UpdateHierarchyOfEntity(show, entity.gameObject);
            EntityHelper.UpdateSceneVisibilityOfEntity(show, entity.gameObject);
        }

        private void CreateAllEntity()
        {
            if (this.m_panelCache == null) return;
            var go = new GameObject();
            UpdateHierarchyOfEntity(false, go);
            entityRoot = go.transform;
            entityRoot.SetParent(transform);
            entityRoot.localPosition = Vector3.zero;
            entityRoot.localRotation = Quaternion.identity;
            entityRoot.localScale = Vector3.one;

            imageEntities = new(m_panelCache.layoutInfo.Count);
            textEntities = new(m_panelCache.layoutInfo.Count);

            foreach (var elementInfo in m_panelCache.GetLayoutElementInfos<LayoutInfo.ElementInfo>())
            {
                var imgInfo = elementInfo as LayoutInfo.ImageInfo;
                if (imgInfo != null) // Image
                {
                    go = new GameObject();
                    var entity = go.AddComponent<ImageEntity>();
                    entity.transform.SetParent(entityRoot);
                    entity.transform.SetSiblingIndex(0);

                    entity.SetData(imgInfo);
                    entity.InitPreviewImage();

                    imageEntities.Add(entity);
                    UpdateHierarchyOfEntity(false, entity.gameObject);
                    continue;
                }
                var textInfo = elementInfo as LayoutInfo.TextInfo;
                if (textInfo != null) // Text
                {
                    go = new GameObject();
                    var entity = go.AddComponent<TextEntity>();
                    entity.transform.SetParent(entityRoot);
                    entity.transform.SetSiblingIndex(0);

                    entity.SetData(textInfo);
                    entity.InitPreviewText();

                    textEntities.Add(entity);
                    UpdateHierarchyOfEntity(false, entity.gameObject);
                    continue;
                }

            }
        }

    }
}
#endif