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

public class LuaUtility : SingletonMonobehaviour<LuaUtility>
{
    public readonly static LuaEnv env = new LuaEnv();
    static float lastGCTime = 0;
    const float GCInterval = 1;//1 second 

    static LuaUtility()
    {
        env.AddLoader(new LuaEnv.CustomLoader(LoadAssetBytes));
    }

    public static LuaTable GetNewTable()
    {
        return env.NewTable();
    }

    public static LuaTable Global {
        get { return env.Global; }
    }

    public void Init()
    {
        Do("global.util");
        Do("custom.ButtonUtil");
        Do("global.logex");
        Do("global.functions");
        Do("global.object");

        lastGCTime = 0f;
    }

    void Update()
    {
        if (Time.time - lastGCTime > GCInterval)
        {
            env.Tick();
            lastGCTime = Time.time;
        }
    }

    public static void Do(string _file, string chunkName = "chunk", LuaTable _table = null)
    {
        var command = string.Format("require '{0}'", _file);
        env.DoString(command, chunkName, _table);
    }

    public static void DoString(string _file, string chunkName = "chunk", LuaTable _table = null)
    {
        var content = LoadAsset(ref _file);
        env.DoString(content, chunkName, _table);
    }

    private static string LoadAsset(ref string _fileName)
    {
        _fileName = _fileName.Replace('.', '/');

        var path = string.Empty;
        if (AssetSource.luaFromEditor)
        {
            path = ResourcesPath.LUA_FODLER + "/" + _fileName + ".lua";
        }
        else
        {
            path = AssetVersionUtility.GetAssetFilePath(StringUtility.Contact("lua/", _fileName, ".lua"));
        }

        return File.ReadAllText(path);
    }

    private static byte[] LoadAssetBytes(ref string _fileName)
    {
        return System.Text.Encoding.UTF8.GetBytes(LoadAsset(ref _fileName));
    }
}