Simple logging class

/*
Simple Logger Class
Author: Satik
*/

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;

namespace Tools
{
    public static class Logger
    {
        private static LogType logType = LogType.NOLOG;
        private static String fileName = "log.txt";
        private static FileStream fs;
        private static bool flushAll = true;

        /// <summary>
        /// Inits logging, opens logging file streams etc.
        /// </summary>
        public static bool Init(LogType lt, String filename)
        {
            logType = lt;

            if (((byte)lt & (byte)LogType.FILE) > 0)
            {
                if (filename != null && filename.Trim() != "")
                {
                    fileName = filename;
                }
                else
                    return false;
            }

            return Init();
        }

        /// <summary>
        /// Closes logging filestream!
        /// </summary>
        public static void Close()
        {
            if (fs != null)
            {
                fs.Close();
                fs.Dispose();
            }
        }

        private static bool Init()
        {
            try
            {
                if (((byte)logType & (byte)LogType.FILE) > 0)
                {
                    fs = new FileStream(fileName, FileMode.Create);
                }
            }
            catch (Exception)
            {
                return false;
            }

            Log("===================", false);
            Log(Constants.GameName + " v " + Constants.Version, false);
            Log("Logging initialized", false);
            Log("Current dir: " + Environment.CurrentDirectory, false);
            Log("Date/Time: " + CurDateTime(), false);
            Log("Computer name: " + Environment.MachineName, false);
            Log("OS: " + Environment.OSVersion, false);
            Log("CPUs: " + Environment.ProcessorCount, false);
            //Log("GPU: "+Microsoft.Xna.Framework.GraphicsDeviceManager.);

            return true;
        }

        public static void LogGPU(Microsoft.Xna.Framework.GraphicsDeviceManager gdm)
        {
            Log("GPU Description: " + gdm.GraphicsDevice.CreationParameters.Adapter.Description);
            Log("GPU Driver: " + gdm.GraphicsDevice.CreationParameters.Adapter.DriverDll + ", version " + gdm.GraphicsDevice.CreationParameters.Adapter.DriverVersion);
            Log("Graphic mode: " + gdm.GraphicsDevice.CreationParameters.Adapter.CurrentDisplayMode.Width +"x"+ gdm.GraphicsDevice.CreationParameters.Adapter.CurrentDisplayMode.Height+"x"+gdm.GraphicsDevice.CreationParameters.Adapter.CurrentDisplayMode.Format+"x"+gdm.GraphicsDevice.CreationParameters.Adapter.CurrentDisplayMode.RefreshRate+"@"+"Hz, aspect ratio "+gdm.GraphicsDevice.CreationParameters.Adapter.CurrentDisplayMode.AspectRatio );
            Log("===================", false);
            Log("                   ", false);
        }

        /// <summary>
        /// Logs message, automatically adds timestamp.
        /// </summary>
        public static void Log(String log)
        {
            Log(log, true);
        }

        /// <summary>
        /// Logs message with optional timestamp.
        /// </summary>
        public static void Log(String log, bool addTimestamp)
        {
            if (addTimestamp) log = CurDateTime() + " - " + log;

            if (logType == LogType.FILE || logType == LogType.CONSOLEANDFILE)
            {
                logFile(log);
            }

            if (logType == LogType.CONSOLE || logType == LogType.CONSOLEANDFILE)
            {
                logConsole(log);
            }
        }

        // logs to console
        private static void logConsole(String log)
        {
            Console.WriteLine(log);
        }

        // logs to file
        private static void logFile(String log)
        {
            log += Environment.NewLine;
            fs.Write(Encoding.Default.GetBytes(log), 0, Encoding.Default.GetBytes(log).Length);

            if (flushAll)
                fs.Flush();
        }

        // returns current date and time in format we like :)
        private static String CurDateTime()
        {
            return DateTime.Now.ToString("dd.MM.yyyy HH:mm:ss");
        }

        public static void LogError(Exception e)
        {
            LogError("", e);
        }

        public static void LogError(String msg, Exception e)
        {
            Log("ERROR: " + msg + " " + e.Message);
        }
    }

    public enum LogType
    {
        NOLOG = 0,              // no logging
        FILE = 1,               // logging to file only
        CONSOLE = 2,            // logging to console only
        CONSOLEANDFILE = 4,     // logging to console and to file
    }
}