#if UNITY_EDITOR
using Sirenix.OdinInspector;
using System.Collections.Generic;
using System.IO;
using UnityEditor;
using UnityEditor.SceneManagement;
using UnityEngine;

namespace UguiToolkit.Editor
{
    [ExecuteAlways]
    public class EntityManager : MonoBehaviour, IManager
    {
        private PanelCache m_panelCache;
        private Transform m_entityRoot;
        private GameObject m_lastSelectionGo;
        private IEntity m_lastSelectionEntity;
        private GameObject m_curSelectionGo;

        private List<ImageEntity> m_imageEntities;
        private List<IEntity> m_textEntities;
        private List<IEntity> m_selectionEntities;

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

        private StageManager m_stageManager;
        private HashSet<string> m_checkImgPaths;
        private float m_lastCheckTime;
        private bool m_useTMP;
        private const float m_checkInterval = 2f;


        private void OnEnable()
        {
            var globalMng = GlobalManager.Instance;
            globalMng.showHierarchyOfEntityChanged += OnUpdateHierarchyOfEntityAllEntity;
            m_useTMP = globalMng.setting.useTMP;

            Selection.selectionChanged += OnSelectionChanged;

            m_stageManager = StageManager.Instance;
        }

        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 (m_selectionEntities != null && m_curSelectionGo)
            {
                if (m_lastSelectionGo && m_lastSelectionGo == m_curSelectionGo)
                {
                    if (m_lastSelectionEntity != null && !m_lastSelectionEntity.IsInside(m_lastSelectionGo.transform))
                    {
                        m_lastSelectionGo = null;
                        m_lastSelectionEntity = null;
                    }
                    return;
                }

                foreach (var entity in m_selectionEntities)
                {
                    var tf = m_curSelectionGo.transform;
                    if (entity.IsInside(tf))
                    {
                        entity.ApplyTransform(tf);
                        if (tf.TryGetComponent<UnityEngine.UI.Image>(out var image))
                        {
                            entity.ApplyData(image);
                        }
                        else if (tf.TryGetComponent<UnityEngine.UI.Text>(out var text))
                        {
                            entity.ApplyData(text);
                        }
                        else if (tf.TryGetComponent<TMPro.TextMeshProUGUI>(out var temp))
                        {
                            entity.ApplyData(temp);
                        }

                        m_lastSelectionGo = m_curSelectionGo;
                        m_lastSelectionEntity = entity;

                        Selection.activeGameObject = null;
                        break;
                    }
                }
            }

            // 检测是否有image变更，及时更新PanelCache
            m_lastCheckTime += Time.deltaTime;
            if (m_lastCheckTime > m_checkInterval)
            {
                m_lastCheckTime = 0;

                if (m_checkImgPaths != null)
                {
                    var images = m_stageManager.PrefabContentsRoot.GetComponentsInChildren<UnityEngine.UI.Image>();
                    foreach (var image in images)
                    {
                        if (image.transform.parent == m_entityRoot || image.sprite == null) continue;
                        var srcImgPath = AssetDatabase.GetAssetPath(image.sprite);
                        if (!m_checkImgPaths.Contains(srcImgPath))
                        {
                            var srcImgDirPath = System.IO.Path.GetDirectoryName(srcImgPath);
                            string projectPath = Directory.GetParent(Application.dataPath).FullName;
                            foreach (var filePath in System.IO.Directory.GetFiles(srcImgDirPath))
                            {
                                var _filePath = Path.GetRelativePath(projectPath, filePath).Replace("\\", "/");
                                m_checkImgPaths.Add(_filePath);
                            }

                            UpdatePanelCache(srcImgDirPath, m_panelCache.TargetImgDirPath);
                            break;
                        }
                    }
                }
            }
        }

        private void InitCheckImgPaths()
        { 
            if (m_checkImgPaths == null) m_checkImgPaths = new HashSet<string>();

            //var images = m_stageManager.PrefabContentsRoot.GetComponentsInChildren<UnityEngine.UI.Image>();
            //foreach (var image in images)
            //{
            //    if (image.sprite == null) continue;
            //    var srcImgPath = AssetDatabase.GetAssetPath(image.sprite);
            //    m_checkImgPaths.Add(srcImgPath);
            //}
        }

        private void UpdatePanelCache(string srcImgDirPath, string targetImgDirPath)
        {
            float distanceDifference = GlobalManager.Instance.setting.distanceDifference;
            CacheScriptObject.CalcRotScaleInfos(srcImgDirPath, targetImgDirPath, distanceDifference,(rotScaleInfoMap) =>
            {
                if (!m_stageManager) return;
                // 拷贝数据
                
                if (m_panelCache.rotScaleInfos != null)
                {
                    foreach (var kv in rotScaleInfoMap)
                    {
                        if (!m_panelCache.rotScaleInfos.TryGetValue(kv.Key, out var rotScaleInfos))
                        {
                            m_panelCache.rotScaleInfos[kv.Key] = kv.Value;
                        }
                    }
                } else
                {
                    m_panelCache.rotScaleInfos = rotScaleInfoMap;
                }

                // 保存缓存
                GlobalManager.Instance.SaveCache(m_stageManager.PrefabAsset, m_panelCache);
            });
        }

        private void OnSelectionChanged()
        {
            if (m_noSelection) return;

            m_curSelectionGo = null;
            m_selectionEntities.Clear();
            m_entityRoot.gameObject.SetActive(false);

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

                    m_entityRoot.gameObject.SetActive(true);
                    bool isFind;
                    bool IsInside = false;
                    foreach (var imgEntity in m_imageEntities)
                    {
                        isFind = false;
                        foreach (var rotScale in rotScaleInfoItems)
                        {
                            var imgInfo = imgEntity.ElementInfo;
                            if ( (imgInfo.HaveSlice && imgInfo.imgSlicePath == rotScale.imgPath) || imgInfo.imgPath == rotScale.imgPath)
                            {
                                if (rotScale.similarityCalc)
                                {
                                    imgEntity.SetTransform(0, new Unity.Mathematics.float2(1, 1), true);
                                }
                                else {
                                    imgEntity.SetTransform(rotScale.rotiation, rotScale.scale, false);
                                }

                                imgEntity.ApplyTransform(imgEntity.transform);
                                imgEntity.ShowSelectionImg(true);
                                m_selectionEntities.Add(imgEntity);

                                if (!IsInside && imgEntity.IsInside(activeGameObject.transform)) IsInside = true;

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

                    if (IsInside)
                    {
                        if (m_lastSelectionGo && m_lastSelectionGo == activeGameObject)
                        {
                            m_curSelectionGo = activeGameObject;
                        }
                    }
                    else {
                        m_curSelectionGo = activeGameObject;
                    }

                    foreach (var textEntity in m_textEntities)
                    {
                        textEntity.gameObject.SetActive(false);
                    }
                }
                else if (activeGameObject.TryGetComponent<UnityEngine.UI.Text>(out var _) 
                    || activeGameObject.TryGetComponent<TMPro.TextMeshProUGUI>(out var _))
                {
                    bool IsInside = false;
                    m_entityRoot.gameObject.SetActive(true);
                    foreach (var textEntity in m_textEntities)
                    {
                        textEntity.ShowSelectionImg(true);
                        textEntity.gameObject.SetActive(true);

                        m_selectionEntities.Add(textEntity);

                        if (!IsInside && textEntity.IsInside(activeGameObject.transform)) IsInside = true;
                    }

                    if (IsInside)
                    {
                        if (m_lastSelectionGo && m_lastSelectionGo == activeGameObject)
                        {
                            m_curSelectionGo = activeGameObject;
                        }
                    }
                    else
                    {
                        m_curSelectionGo = activeGameObject;
                    }

                    foreach (var imgEntity in m_imageEntities)
                    {
                        imgEntity.gameObject.SetActive(false);
                    }
                }
            }
        }

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

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

        private void OnUpdateHierarchyOfEntityAllEntity(bool show)
        {
            UpdateHierarchyOfEntity(show, m_entityRoot.gameObject);
            foreach (var entity in m_imageEntities) UpdateHierarchyOfEntity(show, entity.gameObject);
            foreach (var entity in m_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);
            m_entityRoot = go.transform;
            m_entityRoot.SetParent(transform);
            m_entityRoot.localPosition = Vector3.zero;
            m_entityRoot.localRotation = Quaternion.identity;
            m_entityRoot.localScale = Vector3.one;

            var canvas = m_entityRoot.gameObject.AddComponent<Canvas>();
            canvas.pixelPerfect = true;
            canvas.overrideSorting = true;
            canvas.sortingOrder = 200;

            m_imageEntities = new(m_panelCache.layoutInfo.Count);
            m_textEntities = new(m_panelCache.layoutInfo.Count);
            m_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(imgInfo.name, typeof(RectTransform));
                    var entity = go.AddComponent<ImageEntity>();
                    entity.transform.SetParent(m_entityRoot);
                    entity.transform.SetSiblingIndex(0);

                    entity.SetData(imgInfo);
                    entity.InitPreview();

                    m_imageEntities.Add(entity);
                    UpdateHierarchyOfEntity(false, entity.gameObject);

                    // 创建九宫格
                    continue;
                }
                var textInfo = elementInfo as LayoutInfo.TextInfo;
                if (textInfo != null) // Text
                {
                    if (m_useTMP)
                    {
                        go = new GameObject(textInfo.text, typeof(RectTransform));
                        var entity = go.AddComponent<TextMeshProEntity>();
                        entity.transform.SetParent(m_entityRoot);
                        entity.transform.SetSiblingIndex(0);

                        entity.SetData(textInfo);
                        entity.InitPreview();

                        m_textEntities.Add(entity);
                        UpdateHierarchyOfEntity(false, entity.gameObject);
                        continue;
                    }
                    else
                    {
                        go = new GameObject(textInfo.text, typeof(RectTransform));
                        var entity = go.AddComponent<TextEntity>();
                        entity.transform.SetParent(m_entityRoot);
                        entity.transform.SetSiblingIndex(0);

                        entity.SetData(textInfo);
                        entity.InitPreview();

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

            m_entityRoot.gameObject.SetActive(false);
        }

    }
}
#endif