using System;
using System.Text;

namespace ZTools;

public enum LogLevel
{
    Error,
    Warning,
    Info,
    Debug,
}

public static class Log
{
    private static StringBuilder _logBuilder;
    private static StringBuilder _tmp;

    internal static StringBuilder LogBuilder => _logBuilder;
    public delegate void LogDelegate(string msg);
    public static LogDelegate LogCallback;

    static Log()
    {
        _logBuilder = new StringBuilder();
        _tmp = new StringBuilder();
    }

    public static void Debug(object message)
    {
        Write(message, LogLevel.Debug);
    }

    public static void Info(object message)
    {
        Write(message, LogLevel.Info);
    }

    public static void Error(object message)
    {
        Write(message, LogLevel.Error);
    }

    public static void Warning(object message)
    {
        Write(message, LogLevel.Warning);
    }

    static void Write(object message, LogLevel level = LogLevel.Debug)
    {
        // var bytes = Encoding.UTF8.GetBytes(message.ToString() ?? string.Empty);
        // var s = Encoding.UTF8.GetString(bytes);

        _tmp.Clear();
        _tmp.Append($"[{DateTime.Now:yyyy-MM-dd HH:mm:ss.fff}] {level}: {message}");
        
        var format = _tmp.ToString();
        _logBuilder.AppendLine(format);
        Console.WriteLine(format);
        LogCallback?.Invoke(format);
    }
}