using Godot;
using NLua;
using System;
using System.Text;

public class GlobalModManager
{
    public readonly Lua lua = new();
    private readonly string modsPath;

    public GlobalModManager(string modsPath = "user://Mods/") {
        this.modsPath = modsPath;
        lua.State.Encoding = Encoding.UTF8;
        // lua.State.SetHook(KeraLua.LuaHookMask.Count, 1000000);

        InitSandBox();
        // RegisterAPI();
    }

    public void LoadAllMods()
    {
        if (!DirAccess.DirExistsAbsolute(modsPath))
            return;

        using var dir = DirAccess.Open(modsPath);
        if (dir == null) return;
        
        dir.ListDirBegin();
        string fileName = dir.GetNext();
        while (!string.IsNullOrEmpty(fileName))
        {
            if (fileName.EndsWith(".lua"))
            {
                LoadMod(fileName);
            }
            fileName = dir.GetNext();
        }
    }

    private void InitSandBox() {
    }

    private void LoadMod(string filePath)
    {
        try
        {
            string luaCode = LoadFile(filePath);
            lua.DoString(luaCode);
            GD.Print($"成功加载Mod: {filePath}");
        }
        catch (Exception e)
        {
            GD.PrintErr($"加载Mod {filePath} 失败: {e.Message}");
        }
    }

    private static void SaveFile(string path, string content)
    {
        using var file = FileAccess.Open(path, FileAccess.ModeFlags.Write);
        file.StoreString(content);
    }

    private static string LoadFile(string path)
    {
        using var file = FileAccess.Open(path, FileAccess.ModeFlags.Read);
        string content = file.GetAsText();
        return content;
    }
}