using System;
using System.Collections.Generic;
using System.IO;
using System.Threading.Tasks;
using Newtonsoft.Json;
using UnityEditor;
using UnityEngine;
using System.Linq;

namespace Stary.Evo.InformationSave
{
    public abstract class AbstractInformation<T> : CustomEditorBase where T : InformationBase, new()
    {
        [HideInInspector] public List<T> _list = new List<T>();

        /// <summary>
        /// 配置文件存储路径
        /// </summary>
        string path = "InformationSaveData/ScriptObjectSaveData";

        public virtual void Add()
        {
            _list.Add(new T());
            Save(_list.Count - 1);
        }

        public abstract void Save(int index);
        public abstract void Switch(int index);

        public virtual T GetTransform(string desc)
        {
            int index = _list.FindIndex(n => n.desc == desc);
            if (index != -1)
            {
                return _list[index];
            }
            else
            {
                Debug.LogError($"UnityEvo:{typeof(T)}:不存在该信息:" + desc);
                return default(T);
            }
        }

        public virtual void Delete(int index)
        {
            _list.RemoveAt(index);
        }

        public virtual void Set(string desc)
        {
            int index = _list.FindIndex(n => n.desc == desc);
            if (index != -1) Switch(index);
        }

        #region Editor

#if UNITY_EDITOR
        //更新
        public void UpdateInformation()
        {
            string guid = GetPrefabGUID(this.gameObject)+GetPrefabHierarchyPath(this.gameObject);
            if (guid == "")
            {
                UnityEditor.EditorUtility.DisplayDialog("错误", "可能存在错误\n1、无法在prefab预览中修改数据\n2、新增加物体需先同步为prefab", "确定");
                return;
            }
            ScriptObjectSave scriptObjectSaveData = Resources.Load<ScriptObjectSave>(path);
            if (scriptObjectSaveData == null)
            {
                Debug.LogError("UnityEvo:ScriptObjectSaveData配置文件丢失");
                return;
            }

            if (scriptObjectSaveData.dic.ContainsKey(guid))
            {
                _list.Clear();
                _list = scriptObjectSaveData.dic[guid].OfType<T>().ToList();
            }
            else
            {
                Debug.LogError($"UnityEvo:ScriptObjectSaveData中未存储物体名为:{this.gameObject}\n guid为:{guid}的数据！！！");
            }
        }

        //动态保存
        public bool PlayingSave()
        {
            //文件保存

            string guid = GetPrefabGUID(this.gameObject)+GetPrefabHierarchyPath(this.gameObject);
            if (guid == "")
            {
                UnityEditor.EditorUtility.DisplayDialog("错误", "可能存在错误\n1、无法在prefab预览中修改数据\n2、新增加物体需先同步为prefab", "确定");
                return false;
            }
            // 加载 ScriptObjectSaveData
            ScriptObjectSave scriptObjectSaveData = Resources.Load<ScriptObjectSave>(path);
            if (scriptObjectSaveData == null)
            {
                scriptObjectSaveData = CheckAndCreateFoldersAndAsset();
                //Debug.Log("创建了ScriptObjectSaveData文件");
            }

            if (scriptObjectSaveData.dic == null)
            {
                Debug.LogError("UnityEvo:ScriptObjectSaveData的dic为空");
                return false;
            }

            // 检查是否已经存在相同的键
            if (scriptObjectSaveData.dic.ContainsKey(guid))
            {
                // 如果存在，选择是否替换原有的 List
                if (UnityEditor.EditorUtility.DisplayDialog("提示",
                        $"数据集下已有相同名称的物体数据\n是否覆盖更新！！！\n 物体名为:{this.gameObject}\n guid为:{guid}", "确定",
                        "取消"))
                {
                    scriptObjectSaveData.dic[guid] = new List<InformationBase>(_list);
                }
                else
                {
                    return false;
                }
            }
            else
            {
                // 如果不存在，添加新的键值对
                scriptObjectSaveData.dic.Add(guid, new List<InformationBase>(_list));
            }

            AssetDatabase.SaveAssets();
            EditorUtility.SetDirty(scriptObjectSaveData);
            AssetDatabase.Refresh();

            return true;
        }

        private ScriptObjectSave CheckAndCreateFoldersAndAsset()
        {
            string ResourcesFolderName = "Resources";
            string InformationSaveDataFolderName = "InformationSaveData";
            string ScriptObjectSaveDataFileName = "ScriptObjectSaveData";
            ScriptObjectSave scriptableObject;

            // 判断是否创建Resources文件夹
            string resourcesPath = Path.Combine(Application.dataPath, ResourcesFolderName);
            if (!Directory.Exists(resourcesPath))
            {
                Directory.CreateDirectory(resourcesPath);
            }

            // 判断是否创建InformationSaveData文件夹
            string informationSaveDataPath = Path.Combine(resourcesPath, InformationSaveDataFolderName);
            if (!Directory.Exists(informationSaveDataPath))
            {
                Directory.CreateDirectory(informationSaveDataPath);
            }

            // 创建ScriptObjectSaveData.asset文件
            scriptableObject = ScriptableObject.CreateInstance<ScriptObjectSave>();
            AssetDatabase.CreateAsset(scriptableObject,
                "Assets/" + ResourcesFolderName + "/" + InformationSaveDataFolderName + "/" +
                ScriptObjectSaveDataFileName + ".asset");
            AssetDatabase.SaveAssets();
            AssetDatabase.Refresh();
            Debug.Log("UnityEvo:创建了: " + "Assets/" + ResourcesFolderName + "/" + InformationSaveDataFolderName + "/" +
                      ScriptObjectSaveDataFileName + ".asset 资产");
            return scriptableObject;
        }

        //绘制
        public override void Draw()
        {
            int length = _list.Count;
            int deleteIndex = -1;
            for (int i = 0; i < length; i++)
            {
                GUILayout.BeginHorizontal();
                _list[i].desc = UnityEditor.EditorGUILayout.TextField(_list[i].desc);
                if (GUILayout.Button("切换")) Switch(i);
                if (GUILayout.Button("保存"))
                {
                    Save(i);
                    if (PlayingSave()) Debug.Log("UnityEvo:保存成功!");
                }

                if (GUILayout.Button("上移") && i > 0)
                {
                    T temp = _list[i - 1];
                    _list[i - 1] = _list[i];
                    _list[i] = temp;
                }

                if (GUILayout.Button("下移") && i < _list.Count - 1)
                {
                    T temp = _list[i + 1];
                    _list[i + 1] = _list[i];
                    _list[i] = temp;
                }

                if (GUILayout.Button("删除") && UnityEditor.EditorUtility.DisplayDialog("警告", "你确定要删除吗？", "确定", "取消"))
                    deleteIndex = i;
                GUILayout.EndHorizontal();
                if (i != length - 1) GUILayout.Space(20);
            }

            if (deleteIndex != -1) Delete(deleteIndex);
            GUILayout.Space(30);
            GUILayout.BeginHorizontal();
            if (GUILayout.Button("添加"))
            {
                Add();
            }

            if (GUILayout.Button("更新") && UnityEditor.EditorUtility.DisplayDialog("提示", "你确定要更新吗？", "确定", "取消"))
            {
                UpdateInformation();
                GUILayout.BeginHorizontal();
            }

            GUILayout.EndHorizontal();
        }

        private string GetCurrentGUID()
        {
            string assetPath = AssetDatabase.GetAssetPath(this);
            if (!string.IsNullOrEmpty(assetPath))
            {
                return AssetDatabase.AssetPathToGUID(assetPath);
            }

            return string.Empty;
        }

        private string GetPrefabGUID(GameObject obj)
        {
            string assetPath = PrefabUtility.GetPrefabAssetPathOfNearestInstanceRoot(obj);
            Debug.Log("UnityEvo:GetPrefabHierarchyPath:" + GetPrefabHierarchyPath(obj));

            if (!string.IsNullOrEmpty(assetPath))
            {
                return AssetDatabase.AssetPathToGUID(assetPath);
            }

            return string.Empty;
        }


        private string GetPrefabHierarchyPath(GameObject obj)
        {
            var path = new System.Text.StringBuilder();
            var current = obj.transform;
            //检测该预制体是否是实例
            var root = PrefabUtility.GetNearestPrefabInstanceRoot(obj);
            if (root != null)
            {
                while (current != null && current != root.transform)
                {
                    path.Insert(0, current.name);
                    path.Insert(0, "/");
                    current = current.parent;
                }

            
                return path.ToString();
            }

            return string.Empty;
        }

#else
    public override void Draw(){}
#endif
    }

    #endregion


    [System.Serializable]
    public class InformationBase
    {
        public string desc = "初始";
    }
}