using System;
using System.Collections.Generic;
using System.Linq;
using System.Diagnostics;
using System.IO;
using System.Text;
using System.Threading;

namespace Update
{
	static class Program
	{
		static string EscapeArgument (string arg)
		{
			if (arg.Length == 0) return "\"\"";
			bool needQuotes = arg.Any (char.IsWhiteSpace) || arg.Contains ('"');
			if (!needQuotes) return arg;
			var sb = new StringBuilder ();
			sb.Append ('"');
			int backslashes = 0;
			foreach (char c in arg)
			{
				if (c == '\\')
				{
					backslashes++;
				}
				else if (c == '"')
				{
					sb.Append ('\\', backslashes * 2 + 1);
					sb.Append ('"');
					backslashes = 0;
				}
				else
				{
					sb.Append ('\\', backslashes);
					sb.Append (c);
					backslashes = 0;
				}
			}
			sb.Append ('\\', backslashes * 2);
			sb.Append ('"');
			return sb.ToString ();
		}
		/// <summary>
		/// 应用程序的主入口点。
		/// </summary>
		[STAThread]
		static void Main (string [] args)
		{
			bool createdNew = false;
			Mutex mutex = new Mutex (true, "WindowsModern.PracticalToolsProject!Settings.Update", out createdNew);
			if (!createdNew)
			{
				return;
			}
			try
			{
				Process p = new Process ();
				p.StartInfo.FileName = Path.Combine (AppDomain.CurrentDomain.BaseDirectory, "settings.exe");
				List<string> arguments = new List<string> ();
				arguments.Add ("appinstaller");
				arguments.Add ("update");
				arguments.AddRange (args);
				StringBuilder argBuilder = new StringBuilder ();
				foreach (string a in arguments)
				{
					if (argBuilder.Length > 0)
						argBuilder.Append (" ");
					argBuilder.Append (EscapeArgument (a));
				}
				p.StartInfo.Arguments = argBuilder.ToString ();
				p.Start ();
				p.WaitForExit ();
				int exitCode = p.ExitCode;
			}
			finally
			{
				mutex.ReleaseMutex ();
			}
		}
	}
}