using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;


namespace RobvanderWoude
{
	class TouchDetect
	{
		static string progver = "0.10 alpha";

	
		static int Main( string[] args )
		{
			if ( args.Length > 0 )
			{
				return ShowHelp( );
			}

			try
			{
				if ( GetSystemMetrics( 95 ) > 0 )
				{
					Console.WriteLine( "Touch enabled device(s) detected" );
					return 0;
				}
				else
				{
					Console.WriteLine( "No touch enabled devices detected" );
					return 2;
				}
			}
			catch ( Exception e )
			{
				return ShowHelp( e.Message );
			}
		}


		static int ShowHelp( params string[] errmsg )
		{
			#region Error Message

			if ( errmsg.Length > 0 )
			{
				List<string> errargs = new List<string>( errmsg );
				errargs.RemoveAt( 0 );
				Console.Error.WriteLine( );
				Console.ForegroundColor = ConsoleColor.Red;
				Console.Error.Write( "ERROR:\t" );
				Console.ForegroundColor = ConsoleColor.White;
				Console.Error.WriteLine( errmsg[0], errargs.ToArray( ) );
				Console.ResetColor( );
			}

			#endregion Error Message

			#region Help Text

			/*
			TouchDetect.exe,  Version 0.10 alpha
			Check if touch enabled devices are available
			
			Usage:  TouchDetect.exe
			
			Note:   Return code will be 0 if a touch enabled device is detected,
			        1 for errors, 2 if no touch enabled device was detected.
			
			Written by Rob van der Woude
			http://www.robvanderwoude.com
			*/

			Console.Error.WriteLine( );

			Console.Error.WriteLine( "TouchDetect.exe,  Version {0}", progver );

			Console.Error.WriteLine( "Check if touch enabled devices are available" );

			Console.Error.WriteLine( );

			Console.Error.Write( "Usage:  " );
			Console.ForegroundColor = ConsoleColor.White;
			Console.Error.WriteLine( "TouchDetect.exe" );
			Console.ResetColor( );

			Console.Error.WriteLine( );

			Console.Error.WriteLine( "Note:   Return code will be 0 if a touch enabled device is detected," );

			Console.Error.WriteLine( "        1 for errors, 2 if no touch enabled device was detected." );

			Console.Error.WriteLine( );

			Console.Error.WriteLine( "Written by Rob van der Woude" );

			Console.Error.WriteLine( "http://www.robvanderwoude.com" );

			#endregion Help Text

			return 1;
		}


		[DllImport( "user32.dll" )]
		public static extern int GetSystemMetrics( int smIndex );
	}
}