DebugWriter

using System;
using System.IO;
using UnityEngine;

internal static class DebugWriter {

    private const string path = "Logs/LOG.{0}.txt";
    private const string dir = "Logs/";

#if UNITY_EDITOR
    [UnityEditor.InitializeOnLoadMethod]
#else
    [RuntimeInitializeOnLoadMethod]
#endif
    private static void Init() {
        if(!Directory.Exists(dir))
            Directory.CreateDirectory(dir);

        var writer = new StreamWriter(filename);
        writer.AutoFlush = true;

        writer.WriteLine("Unity Debugger");
        writer.WriteLine("Unity " + Application.unityVersion);
        writer.WriteLine("Version " + Application.version);
        writer.WriteLine("Created " + DateTime.Now);
        writer.WriteLine(string.Empty);

        Application.logMessageReceivedThreaded += (log, info, type) => {
            writer.WriteLine(type);
            writer.WriteLine(string.Format("[{0}]", DateTime.Now));
            writer.WriteLine(log);
            writer.WriteLine(info);
            writer.WriteLine(string.Empty);
        };
    }

    private static string filename {
        get {
            var filename = DateTime.Now.Hour.ToString("00") + ".";
            filename += DateTime.Now.Minute.ToString("00") + ".";
            filename += DateTime.Now.Second.ToString("00") + ".";
            filename += DateTime.Now.Day.ToString("00") + ".";
            filename += DateTime.Now.Month.ToString("00") + ".";
            filename += DateTime.Now.Year.ToString("0000");
            return string.Format(path, filename);
        }
    }
}