Samurai Gunn 2 Logger System

Logger.cs

using System.IO;

namespace SamuraiGunn2
{
	public static class Logger
	{
		private static StreamWriter streamWriter;

		public static void SetLogOutputFile(string filePath)
		{
			if (streamWriter != null)
			{
				streamWriter.Close();
			}

			streamWriter = new StreamWriter(filePath);
		}

		public static void WriteLine(string message)
		{
			if (streamWriter != null)
			{
				streamWriter.WriteLine(message);
				streamWriter.Flush();
			}
			System.Console.WriteLine(message);
		}

		public static void Finish()
		{
			if (streamWriter != null)
			{
				streamWriter.Close();
				streamWriter = null;
			}
		}
	}
}

Main.cs

/* SOMEWHERE NEAR THE TOP OF MAIN... */

if (!System.IO.Directory.Exists(Title.UserDataDirectory))
{
	System.IO.Directory.CreateDirectory(Title.UserDataDirectory);
}

Logger.SetLogOutputFile(System.IO.Path.Combine(Title.UserDataDirectory, "log.txt"));

// configure logging
MoonWorks.Logger.LogInfo = Logger.WriteLine;
MoonWorks.Logger.LogWarn = Logger.WriteLine;
MoonWorks.Logger.LogError = Logger.WriteLine;

Title.cs

using System.IO;

namespace SamuraiGunn2
{
	public static class Title
	{
		public static string UserDataDirectory = $"{Path.Combine(System.Environment.GetFolderPath(System.Environment.SpecialFolder.LocalApplicationData), "SamuraiGunn2MoonWorks")}";
	}
}