using System;
using System.Collections.Generic;
using System.IO;
using UnityEditor;
using UnityEngine;

namespace NBF
{
    public static class CfgEditorUtil
    {
        [MenuItem("构建/配置表/生成脚本")]
        public static void CreateScriptableObject()
        {
            EditorUtils.GetOrCreateAsset<ConfigAssets>(ConfigAssets.SavePath);
            GenConfigScripts();
            AssetDatabase.Refresh();
        }

        [MenuItem("构建/配置表/导表")]
        public static void BuildExcel()
        {
            ExcelToJsonWindow.GenConfig(false);
            AssetDatabase.Refresh();
        }
        // [MenuItem("构建/配置表/读取")]
        // public static void Read()
        // {
        //     var assets = EditorUtils.GetOrCreateAsset<ConfigAssets>(ConfigAssets.SavePath);
        //
        //     var path = Path.Combine(Application.dataPath, "Resources/config", "Input.json");
        //     var json = File.ReadAllText(path);
        //     
        //     JsonUtility.FromJsonOverwrite(json, assets);
        //     EditorUtility.SetDirty(assets);
        //     AssetDatabase.SaveAssets(); // 保存更改
        //     AssetDatabase.Refresh();
        // }

        // [MenuItem("构建/配置表/转json")]
        // public static void GenJson()
        // {
        //     CfgAssets cfgAssets = AssetDatabase.LoadAssetAtPath<CfgAssets>("Assets/Resources/config/CfgAssets.asset");
        //     var json = JsonUtility.ToJson(cfgAssets);
        //     File.WriteAllText(Path.Combine(Application.dataPath, "Resources/config", "Input.json"), json);
        //     // CfgAssets cfgAssets = Resources.Load<CfgAssets>("config/CfgAssets");
        // }

        #region 生成脚本

        private static string GenPath = "Scripts/Configs/Gen";
        private static string TempPath = "Scripts/Configs/Editor/ConfigWarpTemplate";

        public static void GenConfigScripts()
        {
            if (!Directory.Exists($"{Application.dataPath}/{GenPath}"))
            {
                return;
            }

            var types = Reflection.GetAllNonAbstractDerivedTypes<ConfigBase>();
            Dictionary<Type, string> tableNameAttributes = new Dictionary<Type, string>();
            foreach (var type in types)
            {
                tableNameAttributes[type] = type.Name;
            }

            // var canGen = CanGen(tableNameAttributes);
            //
            // if (!canGen) return;
            GenParse(tableNameAttributes);
            GenWarp(tableNameAttributes);
            // GenBinder(tableNameAttributes);
            AssetDatabase.Refresh();
        }

        private static bool CanGen(Dictionary<Type, string> tableNameAttributes)
        {
            // return true;
            string filePath = Path.Combine(Application.dataPath, $"{GenPath}/Warps");
            if (!Directory.Exists(filePath)) return true;
            var files = Directory.GetFiles(filePath);
            List<string> allFileName = new List<string>();
            foreach (var file in files)
            {
                if (Path.GetExtension(file).ToLower() == ".meta") continue;
                var fileName = Path.GetFileNameWithoutExtension(file);
                allFileName.Add(fileName.Replace("Warp", ""));
            }

            if (allFileName.Count != tableNameAttributes.Count) return true;

            foreach (var type in tableNameAttributes.Keys)
            {
                if (!allFileName.Contains(type.Name)) return true;
            }

            return false;
        }


        private static void GenWarp(Dictionary<Type, string> tableNameAttributes)
        {
            // 为何使用生成式，不使用static静态泛型 ? 生成式扩展更强且不会破坏原类的集成结构，父类也不用是泛型类
            //否则比如 BaseConfig<T> 类型来使用。集成结构会受很大限制，反而没有生成式来的灵活

            string filePath = Path.Combine(Application.dataPath, TempPath);
            if (File.Exists(filePath))
            {
                // 读取文本内容
                string fileContent = File.ReadAllText(filePath);
                var rootPath = $"{Application.dataPath}/{GenPath}/Warps";
                if (!Directory.Exists(rootPath))
                {
                    return;
                }

                if (!Directory.Exists(rootPath))
                {
                    Directory.CreateDirectory(rootPath);
                }

                foreach (var type in tableNameAttributes.Keys)
                {
                    var content = fileContent.Replace("##NAME##", type.Name);
                    File.WriteAllText($"{rootPath}/{type.Name}Warp.cs", content);
                }
            }
            else
            {
                Debug.LogError("生成代码模板不存在，请检查");
            }
        }

        private static void GenParse(Dictionary<Type, string> tableNameAttributes)
        {
            if (!Directory.Exists($"{Application.dataPath}/{GenPath}"))
            {
                return;
            }

            CodeWriter codeWriter = new CodeWriter();
            codeWriter.Writeln("/**本脚本为自动生成，每次生成会覆盖！请勿手动修改**/");
            codeWriter.Writeln();
            codeWriter.Writeln("using System;");
            codeWriter.Writeln("using System.Collections.Generic;");
            codeWriter.Writeln("using System.Reflection;");
            codeWriter.Writeln("using Newtonsoft.Json.Linq;");
            codeWriter.Writeln("using UnityEngine;");

            codeWriter.Writeln();
            codeWriter.Writeln("namespace NBF");

            codeWriter.StartBlock();

            codeWriter.Writeln("public partial class ConfigAssets");
            codeWriter.StartBlock();

            foreach (var type in tableNameAttributes.Keys)
            {
                // codeWriter.Writeln($"[HideInInspector] public List<{type.Name}> {type.Name}Arr;");
                codeWriter.Writeln($"public List<{type.Name}> {type.Name}Arr;");
            }

            codeWriter.Writeln();

            codeWriter.Writeln("public void Parse(JToken[] arr, Type type)");
            codeWriter.StartBlock();
            codeWriter.Writeln("var tableNameAttribute = type.GetCustomAttribute<TableNameAttribute>();");
            codeWriter.Writeln("if (tableNameAttribute == null) return;");

            foreach (var type in tableNameAttributes.Keys)
            {
                codeWriter.Writeln($"if (type == typeof({type.Name}))");
                codeWriter.StartBlock();
                codeWriter.Writeln($"{type.Name}Arr = ParseLine<{type.Name}>(arr, tableNameAttribute);");
                codeWriter.EndBlock();
                codeWriter.Writeln();
            }

            codeWriter.EndBlock();

            codeWriter.Writeln();
            codeWriter.Writeln("public void AssociationContexts()");
            codeWriter.StartBlock();

            foreach (var type in tableNameAttributes.Keys)
            {
                codeWriter.Writeln($"new ConfigContext<{type.Name}>().Association({type.Name}Arr);");
            }

            codeWriter.EndBlock();


            codeWriter.EndBlock();
            codeWriter.EndBlock();

            codeWriter.Save($"{Application.dataPath}/{GenPath}/ConfigAssets.Gen.cs");
        }


        private static void WriterCreateParse(CodeWriter codeWriter, Type type)
        {
            codeWriter.Writeln($"if (type == typeof({type.Name}))");
            codeWriter.StartBlock();
            codeWriter.Writeln($"return CreateParseTableTask<{type.Name}>();");
            codeWriter.EndBlock();
            codeWriter.Writeln();
        }

        #endregion
    }
}