#if UNITY_EDITOR
using Sirenix.OdinInspector;
using System.Collections.Generic;
using UnityEditor;
using UnityEngine;
using static UnityEngine.EventSystems.EventTrigger;

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

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

        [LabelText("脱离选择控制"), ShowInInspector]
        private bool noSelection;


        private void OnEnable()
        {
            GlobalManager.Instance.showHierarchyOfEntityChanged += OnUpdateHierarchyOfEntityAllEntity;
            Selection.selectionChanged += OnSelectionChanged;
        }

        private void OnDisable()
        {
            GlobalManager.Instance.showHierarchyOfEntityChanged -= OnUpdateHierarchyOfEntityAllEntity;
            Selection.selectionChanged -= OnSelectionChanged;
        }

        private void Update()
        {
            // 检测是否到达可选实例矩形内部
            if (selectionEntities != null && Selection.activeGameObject != null)
            {
                if (lastSelectionGo && lastSelectionGo == Selection.activeGameObject)
                {
                    if (lastSelectionEntity != null && !lastSelectionEntity.IsInside(lastSelectionGo.transform))
                    {
                        lastSelectionGo = null;
                        lastSelectionEntity = null;
                    }
                    return;
                }

                bool isApplyTransform = false;
                foreach (var entity in selectionEntities)
                {
                    var tf = Selection.activeGameObject.transform;
                    if (entity.IsInside(tf))
                    {
                        entity.ApplyTransform(tf);

                        lastSelectionGo = Selection.activeGameObject;
                        lastSelectionEntity = entity;

                        Selection.activeGameObject = null;
                        
                        isApplyTransform = true;
                        break;
                    }
                }
                if (isApplyTransform) selectionEntities.Clear();
            }
        }


        private void OnSelectionChanged()
        {
            if (noSelection) return;
            entityRoot.gameObject.SetActive(false);
            selectionEntities.Clear();

            if (Selection.activeGameObject != null && m_panelCache != null)
            {
                var activeGameObject = Selection.activeGameObject;
                if (activeGameObject.transform.parent == entityRoot) return;

                if (activeGameObject.TryGetComponent<UnityEngine.UI.Image>(out var image))
                {
                    var rotScaleInfos = m_panelCache.rotScaleInfos;
                    if (rotScaleInfos == null) return;
                    if (image.sprite == null) return;
                    var srcImgPath = AssetDatabase.GetAssetPath(image.sprite);
                    if (!rotScaleInfos.TryGetValue(srcImgPath, out var rotScaleInfoItems)) return;

                    entityRoot.gameObject.SetActive(true);
                    bool isFind;
                    foreach (var imgEntity in imageEntities)
                    {
                        isFind = false;
                        foreach (var rotScale in rotScaleInfoItems)
                        {
                            var imgInfo = imgEntity.ElementInfo;
                            if (imgInfo.imgPath == rotScale.imgPath)
                            {
                                imgEntity.SetTransform(rotScale.rotiation, rotScale.scale);
                                imgEntity.ShowSelectionImg(true);
                                selectionEntities.Add(imgEntity);

                                isFind = true;
                                break;
                            }
                        }
                        imgEntity.gameObject.SetActive(isFind);
                    }

                    foreach (var textEntity in textEntities)
                    {
                        textEntity.gameObject.SetActive(false);
                    }
                }
                else if (activeGameObject.TryGetComponent<UnityEngine.UI.Text>(out var text))
                {
            

                }
            }
        }

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

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

        private void OnUpdateHierarchyOfEntityAllEntity(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.UpdateHierarchyAndSceneVisibilityOfEntity(show, entity.gameObject);
        }

        private void CreateAllEntity()
        {
            if (this.m_panelCache == null) return;
            var go = new GameObject("_entityRoot_", typeof(RectTransform));
            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);
            selectionEntities = 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("",typeof(RectTransform));
                    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("", typeof(RectTransform));
                    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;
                }

            }

            entityRoot.gameObject.SetActive(false);
        }

    }
}
#endif