using System;
using System.ComponentModel;
using System.IO;

namespace Tallier.MapDriveScriptUpdate
{
    public enum LogLevel
    {
        Info = 0,
        Warn = 1,
        Error = 2
    }

    public class Logger
    {
        public struct LogArg
        {
            public string Msg { get; set; }
        }

        private const string logFile = "errors_log.txt";
        private BackgroundWorker worker;

        public Logger(BackgroundWorker worker)
        {
            this.worker = worker;
        }

        public void Error(Exception x)
        {
            string msg = string.Format("{0}\n{1}", x.Message, x.StackTrace);
            this.Error(msg);
        }

        public void Message(LogLevel level, string msg)
        {
            msg = string.Format("{0}: {1} {2}{3}", DateTime.Now, level, msg, Environment.NewLine);
            this.worker.ReportProgress(0, new LogArg { Msg = msg });
            if (level == LogLevel.Warn || level == LogLevel.Error)
            {
                this.logToFile(level, msg);
            }
        }

        private void logToFile(LogLevel level, string msg)
        {
            try
            {
                File.AppendAllText(logFile, string.Format("{0}: {1} {2}{3}", DateTime.Now, level, msg, Environment.NewLine));
            }
            catch
            {
            }
        }

//        public void Error(string msg)
//        {
//            this.Message(LogLevel.Error, msg);
//        }

        public void Error(string msg, params object[] args)
        {
            this.Message(LogLevel.Error, string.Format(msg, args));
        }

        public void Info(string msg, params object[] args)
        {
            this.Message(LogLevel.Info, string.Format(msg, args));
        }

        public void Warn(string msg, params object[] args)
        {
            this.Message(LogLevel.Warn, string.Format(msg, args));
        }
    }
}