using System;
using System.Collections.Generic;
using UnityEngine;
using DynamicExpresso;
using System.Text.RegularExpressions;
using System.Linq;
using UnityEngine.InputSystem;
using TMPro;
using System.Reflection;
using System.Linq.Expressions;
using Sirenix.Utilities;
using System.Collections;
using DG.Tweening;

//又在写大粪 ——神币
namespace Ichni.Editor
{
    public partial class EditorConsole : MonoBehaviour
    {
        public Interpreter functionInterpreter;
        public TMP_InputField InputCommand;
        private Dictionary<int, string> historyCommand = new Dictionary<int, string>();
        private int historycount = 0;
        public GameObject ConsoleUI;
        public TMP_Text cueText;
        bool isHide = true;
        private string FillCueCommand(MethodInfo method)
        {
            if (method == null)
            {
                return "";
            }
            string methodName = method.Name;
            // 3. 获取参数信息
            var parameters = method.GetParameters();
            if (parameters.Length == 0)
            {

                return $"{methodName} " + "\n";
            }

            // 4. 生成参数提示
            string paramHint = string.Join(" ", parameters.Select(p =>
                p.IsOptional ? $"[{p.ParameterType.Name}:{p.Name}]" : $"{p.ParameterType.Name}:{p.Name}"
            ));
            return $"{methodName} {paramHint}".Trim() + "\n";
        }
        public void GetChange(string change)
        {
            if (change == "help")
            {
                List<MethodInfo> Allmethods = typeof(EditorConsoleMethods).GetMethods().
                Where(m => m.IsStatic && m.IsPublic && m.ReturnType == typeof(void)).
                ToList();
                cueText.text = "";
                foreach (MethodInfo method in Allmethods)
                {
                    cueText.text += FillCueCommand(method);
                }
                return;
            }
            //         Task t = new Task(() =>
            // {
            // 1. 提取命令名
            string trimmed = change.Trim();
            if (string.IsNullOrEmpty(trimmed))
            {
                cueText.text = "";
                return;
            }
            // 支持 func(...) 或 func abc 123
            var match = Regex.Match(trimmed, @"^(\w+)");
            if (!match.Success)
            {
                cueText.text = "";
                return;
            }
            string funcName = match.Groups[1].Value;

            // 2. 查找方法
            List<MethodInfo> methods = typeof(EditorConsoleMethods).GetMethods()
                .Where(m => m.IsStatic && m.IsPublic && m.ReturnType == typeof(void) && m.Name.Contains(funcName)).ToList();
            cueText.text = "";
            foreach (MethodInfo method in methods)
            {
                cueText.text += FillCueCommand(method);
            }
            if (cueText.text.IsNullOrWhitespace())
            {
                cueText.text = "No matching commands found.";
            }
            // });

            //         t.RunSynchronously();
        }
        public void GetCommand(string Command)//当提交命令时
        {
            try
            {
                functionInterpreter.Eval(Command);
            }
            catch (Exception e)
            {
                Debug.LogWarning("WTF Command!  " + e);
                LogWindow.Log("Unknow Command!", Color.red);
            }
        }
        private void Update()
        {
            UIscale();
            if (InputCommand.isFocused) InputDect();
        }
        private void UIscale()
        {
            if (Keyboard.current.backquoteKey.wasPressedThisFrame)
            {



                isHide = !isHide;
                if (!isHide)
                {
                    ConsoleUI.SetActive(true);

                }
                else
                    ConsoleUI.SetActive(false);

            }

        }



        //这是史，不要看
        private void InputDect()
        {
            // 向下翻历史命令
            if (Keyboard.current.downArrowKey.wasPressedThisFrame)
            {
                if (historyCommand.Count - 1 > historycount)
                {
                    historycount++;
                    InputCommand.text = historyCommand[historycount];
                }
                else
                {
                    InputCommand.text = "";
                    historycount = historyCommand.Count;
                }
                return;
            }

            // 向上翻历史命令
            if (Keyboard.current.upArrowKey.wasPressedThisFrame && historycount != 0)
            {
                historycount--;
                InputCommand.text = historyCommand[historycount];
                return;
            }

            // 提交命令
            if (Keyboard.current.enterKey.wasPressedThisFrame)
            {
                string input = InputCommand.text;
                if (string.IsNullOrWhiteSpace(input))
                {
                    InputCommand.text = "";
                    return;
                }
                string ExpoCommand = TransformCommand(input);


                print(ExpoCommand);
                GetCommand(ExpoCommand);

                // 记录历史命令
                if (historyCommand.ContainsKey(historycount))
                    historyCommand[historycount] = input;
                else
                    historyCommand.Add(historycount, input);

                historycount++;
                InputCommand.text = "";
            }
        }
        private string TransformCommand(string input)
        {
            string getFloatorInt(string a)
            {
                return a.Contains(".") ? $"{a}f" : a;
            }
            // 处理命令格式，适配 DynamicExpresso
            string trimmed = input.Trim();

            // 1. 直接支持 func(...) 形式
            if (Regex.IsMatch(trimmed, @"^\w+\s*\(.*\)$"))
                return trimmed;

            // 2. 直接支持赋值表达式
            if (trimmed.Contains("="))
                return trimmed;

            // 3. 支持 func abc 123 [1,2,3] 形式
            var match = Regex.Match(trimmed, @"^(\w+)\s*(.*)$");
            if (match.Success)
            {
                string func = match.Groups[1].Value;
                string args = match.Groups[2].Value.Trim();

                // 匹配参数：中括号、引号、或连续非空白
                var argMatches = Regex.Matches(args, @"(\[[^\]]+\]|""(?:[^""\\]|\\.)*""|\S+)");
                var argList = argMatches.Cast<Match>().Select(m => m.Value).ToList();

                List<string> processedArgs = new List<string>();
                foreach (var arg in argList)
                {
                    string a = arg.Trim();

                    // Vector2/3: [1,2] 或 [1,2,3]，支持小数
                    if (Regex.IsMatch(a, @"^\[\s*-?\d*\.?\d+\s*,\s*-?\d*\.?\d+(\s*,\s*-?\d*\.?\d+)*\s*\]$"))
                    {
                        // 去除中括号和空格
                        string content = a.Substring(1, a.Length - 2).Trim();
                        var nums = content.Split(',').Select(s => s.Trim()).ToArray();
                        if (nums.Length == 2)
                            processedArgs.Add($"new Vector2({getFloatorInt(nums[0])},{getFloatorInt(nums[1])})");
                        else if (nums.Length == 3)
                            processedArgs.Add($"new Vector3({getFloatorInt(nums[0])},{getFloatorInt(nums[1])},{getFloatorInt(nums[2])})");
                        else
                            processedArgs.Add(a); // 不是2或3维，原样返回
                    }
                    // 已有引号的字符串
                    else if (a.StartsWith("\"") && a.EndsWith("\""))
                    {
                        processedArgs.Add(a);
                    }
                    // 数字
                    else if (Regex.IsMatch(a, @"^-?\d+(\.\d+)?([eE][+-]?\d+)?$"))
                    {
                        processedArgs.Add(getFloatorInt(a));
                    }
                    // 变量名（字母开头，允许字母数字下划线）
                    else if (Regex.IsMatch(a, @"^[a-zA-Z_]\w*$"))
                    {
                        processedArgs.Add(a);
                    }
                    // 其它未加引号的参数，自动加引号
                    else
                    {
                        processedArgs.Add($"\"{a}\"");
                    }
                }

                string joinedArgs = string.Join(",", processedArgs);
                return string.IsNullOrEmpty(joinedArgs) ? $"{func}()" : $"{func}({joinedArgs})";
            }
            return trimmed;
        }
        private void Start()
        {

            SetUpFunctions();

            //Test
            // functionInterpreter.Eval("print(\"Hello World!\")");
            // functionInterpreter.Eval("log(\"Hello World but debug!\")");
        }
    }

    public partial class EditorConsole
    {
        public Inspector inspector => EditorManager.instance.uiManager.inspector;
        public Hierarchy hierarchy => EditorManager.instance.uiManager.hierarchy;
        public LogWindow logWindow => EditorManager.instance.uiManager.mainPage.logWindow;

        public List<string> commandList = new List<string>();
        public void SetUpFunctions()
        {
            functionInterpreter = new Interpreter()
                .Reference(typeof(Vector3))
                .Reference(typeof(Vector2));//这是AI给的东西？
            foreach (MethodInfo i in typeof(EditorConsoleMethods).GetMethods().
                        ToList().Where(i => i.IsStatic && i.IsPublic && (i.ReturnType == typeof(void))))
            {
                var parameters = i.GetParameters().Select(p => p.ParameterType).ToArray();
                var delegateType = Expression.GetDelegateType(parameters.Concat(new[] { i.ReturnType }).ToArray());
                functionInterpreter.SetFunction(i.Name, i.CreateDelegate(delegateType));
                commandList.Add(i.Name);
            }

        }


    }
}