using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Newtonsoft.Json;
using TriLibCore;
using TriLibCore.SFB;
using UnityEngine;
using UnityEngine.Networking;
using ZXL.Helper;

namespace ZXL.Manager
{
    class AssetManager : Manager<AssetManager>
    {
        private Dictionary<string, Dictionary<string, AssetInfo>> assets;

        private AssetConfigCas cas;

        private Camera renderCamera;
        RenderTexture renderTexture;
        Texture2D capturedImage;
        private GameObject object_M;

        /// <summary>
        /// 上传模型成功的回调
        /// </summary>
        public Action<AssetInfo> addItemAction;

        /// <summary>
        /// 初始化成功的回调
        /// </summary>
        public Action initAction;

        public override void OnAwake()
        {
            base.OnAwake();

            assets = new Dictionary<string, Dictionary<string, AssetInfo>>();
            assets.Add(AssetTag.公司.ToString(), new Dictionary<string, AssetInfo>());
            assets.Add(AssetTag.个人.ToString(), new Dictionary<string, AssetInfo>());
            assets.Add(AssetTag.项目.ToString(), new Dictionary<string, AssetInfo>());

            if (File.Exists(ZConst.AssetConfigPath))
            {
                var text = File.ReadAllText(ZConst.AssetConfigPath);
                cas = JsonConvert.DeserializeObject<AssetConfigCas>(text);
            }

            if (cas == null)
            {
                cas = new AssetConfigCas();
                cas.AssetConfigCa = new Dictionary<string, Dictionary<string, AssetConfigCa>>();
                cas.AssetConfigCa.Add("公司", new Dictionary<string, AssetConfigCa>());
                cas.AssetConfigCa.Add("个人", new Dictionary<string, AssetConfigCa>());
                cas.AssetConfigCa.Add("项目", new Dictionary<string, AssetConfigCa>());
            }

            object_M = new GameObject("object_M");
            object_M.SetActive(false);
            StartCoroutine(Init());
        }

        public void SetCamera(Camera camera)
        {
            renderCamera = camera;
            // renderTexture = new RenderTexture(renderCamera.pixelWidth, renderCamera.pixelHeight, 24);
            renderTexture = renderCamera.targetTexture;
        }

        #region Config （完成）

        /// <summary>
        /// init config
        /// </summary>
        /// <returns></returns>
        /// <exception cref="ArgumentOutOfRangeException"></exception>
        IEnumerator Init()
        {
            foreach (var dic in cas.AssetConfigCa.Values)
            {
                foreach (var ca in dic.Values)
                {
                    var context = AssetLoader.LoadModelFromFile(ca.AssetPath, null, null, OnProgress, null, object_M);
                    while (true)
                    {
                        if (context.LoadingProgress >= 1)
                            break;
                        yield return null;
                    }

                    context.WrapperGameObject.name = ca.Name;
                    var sprite = LoadSprite(ca.SpritePath);

                    var assetInfo = new AssetInfo()
                    {
                        Name = ca.Name, GameObject = context.WrapperGameObject, Sprite = sprite, AssetTag = ca.AssetTag,
                        Config = ca
                    };

                    if (assets.TryGetValue(ca.AssetTag, out Dictionary<string, AssetInfo> infos))
                    {
                        infos.Add(ca.Name, assetInfo);
                        Debug.Log($"init add {ca.Name} !");
                    }
                }
            }

            initAction?.Invoke();

            void OnProgress(AssetLoaderContext arg1, float arg2)
            {
            }
        }

        /// <summary>
        /// update config asset data
        /// </summary>
        private void UpdateAssetData()
        {
            var s = JsonConvert.SerializeObject(cas);
            if (!File.Exists(ZConst.AssetConfigPath))
                File.CreateText(ZConst.AssetConfigPath).Dispose();
            File.WriteAllText(ZConst.AssetConfigPath, s);
        }

        /// <summary>
        /// add config item
        /// </summary>
        /// <param name="fname"></param>
        /// <param name="assetPath"></param>
        /// <param name="spritePath"></param>
        /// <param name="assetTag"></param>
        void AddConfig(AssetConfigCa configCa)
        {
            cas.AssetConfigCa[configCa.AssetTag].Add(configCa.Name, configCa);
            UpdateAssetData();
        }

        void DeleteConfig(string assetTag, string configName)
        {
            cas.AssetConfigCa[assetTag].Remove(configName);
            UpdateAssetData();
        }

        #endregion

        #region AssetInfo

        #region 上传（完成）

        /// <summary>
        /// upload and load to scene
        /// </summary>
        /// <param name="title"></param>
        /// <param name="wrapperGameObject"></param>
        /// <param name="assetTag"></param>
        /// <param name="callback"></param>
        public void PushAsset(string title, GameObject wrapperGameObject, AssetTag assetTag,
            Action<string, string, GameObject> callback = null)
        {
            StartCoroutine(PushModel_I(title, wrapperGameObject, assetTag, callback));
        }

        IEnumerator PushModel_I(string title, GameObject wrapperGameObject, AssetTag assetTag,
            Action<string, string, GameObject> callback = null)
        {
            string exten = "";
            var paths = StandaloneFileBrowser.OpenFilePanel(title ?? "Open File", "", exten, false);
            if (paths.Count == 0)
            {
                Debug.Log("Selected file: " + paths[0].Name);
                yield break;
            }
            else
            {
                var strings = paths[0].Name.Split("/");
                var name = strings[strings.Length - 1];

                string savePathWithName;
                switch (assetTag)
                {
                    case AssetTag.公司:
                        savePathWithName = $"{ZConst.AssetRootPath_GS}/{name}";
                        break;
                    case AssetTag.个人:
                        savePathWithName = $"{ZConst.AssetRootPath_GR}/{name}";
                        break;
                    case AssetTag.项目:
                        savePathWithName = $"{ZConst.AssetRootPath_XM}/{name}";
                        break;
                    default:
                        throw new ArgumentOutOfRangeException(nameof(assetTag), assetTag, null);
                }

                tempFilePath = savePathWithName;
                if (File.Exists(savePathWithName))
                {
                    File.Delete(savePathWithName);
                }

                UnityWebRequest request = UnityWebRequest.Get(paths[0].Name);
                request.SendWebRequest();
                while (true)
                {
                    if (request.isDone)
                    {
                        byte[] results = request.downloadHandler.data;
                        // 通过模型数据写入本地
                        FileInfo file = new FileInfo(savePathWithName);
                        if (file.Directory != null) file.Directory.Create();
                        Stream sw;
                        sw = file.Create();
                        sw.Write(results, 0, results.Length);
                        sw.Close();
                        sw.Dispose();
                        break;
                    }
                    else if (request.isNetworkError)
                    {
                        Debug.Log("Download Error:" + request.error);
                        break;
                    }

                    yield return new WaitForSeconds(Time.deltaTime);
                }

                GameObject obj = null;
                bool isTrue = false;

                var loadModelFromFile =
                    AssetLoader.LoadModelFromFile(savePathWithName, null, null, OnProgress, null, wrapperGameObject);
                while (!isTrue)
                {
                    Debug.Log(loadModelFromFile.LoadingProgress);
                    yield return null;
                }

                obj = loadModelFromFile.RootGameObject;
                obj.transform.SetWithChildLayer(LayerMask.NameToLayer("PushModel"));
                tempGameObject = obj;
                var split = name.Split(".")[0];
                callback?.Invoke(split, savePathWithName, obj);
                yield break;

                void OnProgress(AssetLoaderContext arg1, float arg2)
                {
                    if (arg2.Equals(1f) || arg1.RootGameObject!=null)
                    {
                        isTrue = true;
                    }
                }
            }
        }

        string tempFilePath;
        GameObject tempGameObject;

        public void CancelAsset()
        {
            if (File.Exists(tempFilePath))
                File.Delete(tempFilePath);
            GameObject.Destroy(tempGameObject);
            tempFilePath = null;
            tempGameObject = null;
        }

        #endregion

        #region 搜索

        #endregion

        #region 删除（完成）

        public void DeleteAssets(AssetInfo info)
        {
            if (assets.TryGetValue(info.AssetTag, out var value))
            {
                DeleteConfig(info.AssetTag, info.Name);
                value.Remove(info.Name);
                //TODO: is with delete asset ?
                var directoryInfo = new FileInfo(info.Config.AssetPath).Directory;
                directoryInfo?.Parent?.Delete(true);
            }
        }

        #endregion

        #region 重命名 （完成）

        public void RenameAsset(string assetTag, AssetInfo info, string newName)
        {
            string cstr = info.Name;
            info.Name = newName;

            var config = info.Config;
            if (config == null)
                throw new NullReferenceException();

            config.Name = newName;
            var asset = FileHelper.RenameFile(config.AssetPath, newName);
            config.AssetPath = asset;
            asset = FileHelper.RenameFile(config.SpritePath, newName);
            config.SpritePath = asset;

            cas.AssetConfigCa[assetTag][cstr] = config;
            assets[assetTag][cstr] = info;

            UpdateAssetData();
        }

        #endregion

        #region 拷贝 （完成）

        public void CopyAsset(string assetTag, AssetInfo info)
        {
            string cstr = info.Name;

            var configAssetPath = info.Config.AssetPath;
            FileHelper.CopyFile(configAssetPath);
            assets[assetTag][cstr] = info;
            cas.AssetConfigCa[assetTag][cstr] = info.Config;

            UpdateAssetData();
        }

        #endregion

        #region 移动

        public void MoveAsset(string oldPath, string newPath)
        {
            FileHelper.MoveDirectoryWithFiles(oldPath, newPath);
        }

        #endregion

        #region 筛选

        #endregion

        #region Icon

        /// <summary>
        /// 更新图标
        /// </summary>
        /// <param name="fileName"></param>
        /// <param name="assetPathWithName"></param>
        /// <param name="assetTag"></param>
        /// <param name="go"></param>
        /// <exception cref="ArgumentOutOfRangeException"></exception>
        public void AddItemAndGenIcon(string fileName, string assetPathWithName, AssetTag assetTag, GameObject go)
        {
            var pngPath = Path.Combine(ZConst.AssetCacheIcon, fileName) + ".jpg";
            var sprite = JT(pngPath);
            var tagStr = assetTag.ToString();
            AssetConfigCa ca = new AssetConfigCa();
            ca.Name = fileName;
            ca.AssetPath = assetPathWithName;
            ca.SpritePath = pngPath;
            ca.AssetTag = tagStr;
            var assetInfo = new AssetInfo()
            {
                Name = fileName,
                Sprite = sprite,
                GameObject = go,
                AssetTag = tagStr,
                Config = ca
            };
            if (assets.TryGetValue(tagStr, out var value))
            {
                if (value.TryAdd(fileName, assetInfo))
                {
                    AddConfig(ca);
                    addItemAction?.Invoke(assetInfo);
                }

                value[fileName] = assetInfo;
            }
        }

        Sprite JT(string assetPathWithName)
        {
            // 创建一个 Texture2D 用来存储相机捕捉的画面
            capturedImage = new Texture2D(renderTexture.width, renderTexture.height, TextureFormat.RGB24, false);

            // 从 RenderTexture 中读取像素数据到 Texture2D
            RenderTexture.active = renderTexture;
            capturedImage.ReadPixels(new Rect(0, 0, renderTexture.width, renderTexture.height), 0, 0);
            capturedImage.Apply();

            // 重置 RenderTexture 的激活状态
            RenderTexture.active = null;

            // 此时 capturedImage 就包含了当前帧的画面，你可以进行保存或者其他操作
            // 示例：保存为 PNG 文件
            byte[] bytes = capturedImage.EncodeToJPG();
            new FileInfo(assetPathWithName).Directory?.Create();
            if (File.Exists(assetPathWithName))
                File.Delete(assetPathWithName);
            System.IO.File.WriteAllBytes(assetPathWithName, bytes);

            // 清理资源
            Destroy(capturedImage);
            var sprite = LoadSprite(assetPathWithName);
            return sprite;
        }

        Sprite LoadSprite(string assetPathWithName)
        {
            var bytes = File.ReadAllBytes(assetPathWithName);
            Texture2D texture2D = new Texture2D(10, 10);
            texture2D.LoadImage(bytes);
            Sprite sp = Sprite.Create(texture2D, new Rect(0, 0, texture2D.width, texture2D.height), Vector2.zero);
            return sp;
        }

        #endregion

        #endregion

        public List<AssetInfo> GetAssets(AssetTag assetTag)
        {
            if (assets.TryGetValue(assetTag.ToString(), out var value))
            {
                return value.Values.ToList();
            }

            return null;
        }
    }

    [System.Serializable]
    public class AssetInfo
    {
        public string Name;
        public GameObject GameObject;
        public Sprite Sprite;
        public string AssetTag;
        public AssetConfigCa Config = new AssetConfigCa();
    }

    [System.Serializable]
    public class AssetConfigCas
    {
        /// <summary>
        /// the first str is tag ,
        /// the second str is fileName ,
        /// no double names allowed
        /// </summary>
        public Dictionary<string, Dictionary<string, AssetConfigCa>> AssetConfigCa =
            new Dictionary<string, Dictionary<string, AssetConfigCa>>();
    }

    [System.Serializable]
    public class AssetConfigCa
    {
        public string Name;
        public string AssetPath;
        public string SpritePath;
        public string AssetTag;
    }

    public enum AssetTag
    {
        公司,
        个人,
        项目,
    }
}