using System;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using System.Globalization;


namespace RobvanderWoude
{
	public class TranslateCulture
	{
		public static int Main( string[] args )
		{
			try
			{
				List<CultureInfo> cultures = new List<CultureInfo>( );
				//IComparer myComparer = new CultureNameComparer( );

				#region Command Line Parsing

				string format = "list";
				string output = "all";
				bool sort = false;

				if ( args.Length > 0 )
				{
					foreach ( string arg in args )
					{
						switch ( arg.ToLower( ) )
						{
							case "/?":
								return WriteError( string.Empty );
							case "/c":
								if ( format != "list" ) { return WriteError( "Duplicate or conflicting command line switches." ); }
								format = "csv";
								break;
							case "/m":
								if ( output != "all" ) { return WriteError( "Duplicate or conflicting command line switches." ); }
								output = "monthnames";
								break;
							case "/s":
								if ( sort ) { return WriteError( "Duplicate command line switches." ); }
								sort = true;
								break;
							case "/w":
								if ( output != "all" ) { return WriteError( "Duplicate or conflicting command line switches." ); }
								output = "weekdays";
								break;
							default:
								CultureInfo cult = CultureInfo.GetCultureInfo( arg );
								if ( cultures.Contains( cult ) ) { return WriteError( "Duplicate cultures specified." ); }
								cultures.Add( cult );
								break;
						}
					}
				}

				#endregion Command Line Parsing

				if ( cultures.Count == 0 )
				{
					cultures.AddRange( CultureInfo.GetCultures( CultureTypes.AllCultures ) );
				}
				if ( sort )
				{
					CultureNameComparer comp = new CultureNameComparer( );
					cultures.Sort( comp );
				}
				foreach ( CultureInfo culture in cultures )
				{
					Console.WriteLine( ShowCultureInfo( culture, output, format ) );
				}

				return 0;
			}
			catch ( Exception e )
			{
				return WriteError(  e.Message );
			}
		}


		// Custom CultureInfo.Name comparer, by Bas van der Woude
		public class CultureNameComparer : Comparer<CultureInfo>
		{
			public override int Compare( CultureInfo x, CultureInfo y )
			{
				if ( x == null ) { throw new ArgumentNullException( "x" ); }
				if ( y == null ) { throw new ArgumentNullException( "y" ); }
				return string.Compare( x.Name, y.Name, StringComparison.InvariantCultureIgnoreCase );
			}
		}


		// Format the requested info for the specified culture
		public static string ShowCultureInfo( CultureInfo culture, string display, string format )
		{
			string output = string.Empty;
			CultureInfo local = CultureInfo.CurrentCulture;

			switch ( format )
			{
				case "csv":
					output = String.Format( culture, "\"{0}\",", culture.Name );
					break;
				case "list":
					output = String.Format( culture, "\n{0,-12}      {1}\n{2,-12}      {3}", local.Name, culture.Name, "====================".Substring( 0, local.Name.Length ), "====================".Substring( 0, culture.Name.Length ) );
					break;
			}
			string[] days = culture.DateTimeFormat.DayNames;
			string[] localdays = local.DateTimeFormat.DayNames;
			string[] months = culture.DateTimeFormat.MonthNames;
			string[] localmonths = local.DateTimeFormat.MonthNames;
			if ( display != "monthnames" )
			{
				for ( int i = 0; i < 7; i++ )
				{
					if ( !string.IsNullOrEmpty( days[i] ) )
					{
						switch ( format )
						{
							case "csv":
								output += days[i] + "\",\"";
								break;
							case "list":
								output += String.Format( "\n{0,-12}  ->  {1}", localdays[i], days[i] );
								break;
						}
					}
				}
			}
			if ( display != "weekdays" )
			{
				for ( int i = 0; i < 12; i++ )
				{
					if ( !string.IsNullOrEmpty( months[i] ) )
					{
						switch ( format )
						{
							case "csv":
								output += months[i] + "\",\"";
								break;
							case "list":
								output += String.Format( "\n{0,-12}  ->  {1}", localmonths[i], months[i] );
								break;
						}
					}
				}
			}
			if ( display == "csv" ) { output = output.Substring( 0, output.Length - 2 ); }
			return output;
		}


		#region Error Handling

		// Code to display help and optional error message, by Bas van der Woude
		public static int WriteError( Exception e )
		{
			return WriteError( e == null ? null : e.Message );
		}

		public static int WriteError( string errorMessage )
		{
			string exeName = Process.GetCurrentProcess( ).ProcessName;

			/*
			TranslateCulture,  Version 1.00
			List translations for weekdays and/or month names for the specified culture(s)

			Usage:  TRANSLATECULTURE [culture [culture [...]]] [/M|/W] [/S] [/C]

			Where:  culture   is a culture name, e.g. 'pt-BR' for Portugese (Brasil);
			                  multiple cultures allowed on a single command line; if
			                  no culture is specified, ALL known cultures are listed.
			        /C        formats output as CSV  (default: list)
			        /M        lists month names only (default: month names and weekdays)
			        /S        sorts by culture name  (default: list in command line order)
			        /W        lists weekdays only    (default: month names and weekdays)

			Notes:  List format looks like 'Sunday -> domingo' (Sunday in local language).
			        The /M and /W switches are mutually exclusive.
			        Sort function optimized by Bas van der Woude.
			
			Written by Rob van der Woude
			http://www.robvanderwoude.com
			*/

			if ( string.IsNullOrEmpty( errorMessage ) == false )
			{
				Console.Error.WriteLine( );
				Console.ForegroundColor = ConsoleColor.Red;
				Console.Error.Write( "ERROR: " );
				Console.ForegroundColor = ConsoleColor.White;
				Console.Error.WriteLine( errorMessage );
				Console.ResetColor( );
			}

			Console.Error.WriteLine( );
			Console.Error.WriteLine( "{0},  Version 1.00", exeName );
			Console.Error.WriteLine( "List translations for weekdays and/or month names for the specified culture(s)" );
			Console.Error.WriteLine( );
			Console.Error.Write( "Usage:  " );
			Console.ForegroundColor = ConsoleColor.White;
			Console.Error.WriteLine( "{0} [culture [culture [...]]] [/M|/W] [/S] [/C]", exeName.ToUpper( ) );
			Console.ResetColor( );
			Console.Error.WriteLine( );
			Console.Error.Write( "Where:  " );
			Console.ForegroundColor = ConsoleColor.White;
			Console.Error.Write( "culture" );
			Console.ResetColor( );
			Console.Error.WriteLine( "   is a culture name, e.g. 'pt-BR' for Portugese (Brasil);" );
			Console.Error.WriteLine( "                  multiple cultures allowed on a single command line; if" );
			Console.Error.Write( "                  no culture is specified, " );
			Console.ForegroundColor = ConsoleColor.White;
			Console.Error.Write( "all" );
			Console.ResetColor( );
			Console.Error.WriteLine( " known cultures are listed." );
			Console.ForegroundColor = ConsoleColor.White;
			Console.Error.Write( "        /C        " );
			Console.ResetColor( );
			Console.Error.WriteLine( "formats output as CSV  (default: list)" );
			Console.ForegroundColor = ConsoleColor.White;
			Console.Error.Write( "        /M        " );
			Console.ResetColor( );
			Console.Error.WriteLine( "lists month names only (default: month names and weekdays)" );
			Console.ForegroundColor = ConsoleColor.White;
			Console.Error.Write( "        /S        " );
			Console.ResetColor( );
			Console.Error.WriteLine( "sorts by culture name  (default: list in command line order)" );
			Console.ForegroundColor = ConsoleColor.White;
			Console.Error.Write( "        /W        " );
			Console.ResetColor( );
			Console.Error.WriteLine( "lists weekdays only    (default: month names and weekdays)" );
			Console.Error.WriteLine( );
			Console.Error.Write( "Notes:  List format looks like '" );
			Console.ForegroundColor = ConsoleColor.White;
			Console.Error.Write( "Sunday -> domingo" );
			Console.ResetColor( );
			Console.Error.WriteLine( "' (Sunday in local language)." );
			Console.Error.Write( "        The " );
			Console.ForegroundColor = ConsoleColor.White;
			Console.Error.Write( "/M" );
			Console.ResetColor( );
			Console.Error.Write( " and " );
			Console.ForegroundColor = ConsoleColor.White;
			Console.Error.Write( "/W" );
			Console.ResetColor( );
			Console.Error.WriteLine( " switches are mutually exclusive." );
			Console.Error.WriteLine( "        Sort function optimized by Bas van der Woude." );
			Console.Error.WriteLine( );
			Console.Error.WriteLine( "Written by Rob van der Woude" );
			Console.Error.WriteLine( "http://www.robvanderwoude.com" );
			return 1;
		}

		#endregion Error Handling
	}
}