using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.VisualBasic.FileIO;


namespace RobvanderWoude
{
	internal class Trash
	{
		static readonly string progver = "1.00";


		static int Main( string[] args )
		{
			UIOption dialogs = UIOption.OnlyErrorDialogs;

			if ( args.Length == 0 || args.Contains( "/?" ) )
			{
				return ShowHelp( );
			}

			foreach ( string arg in args )
			{
				if ( arg.ToUpper( ) == "/V" )
				{
					dialogs = UIOption.AllDialogs;
				}
				else if ( !File.Exists( arg ) )
				{
					return ShowHelp( "File \"{0}\" not found", arg );
				}
			}

			foreach ( string arg in args )
			{
				if ( arg.ToUpper( ) != "/V" )
				{
					try
					{
						FileSystem.DeleteFile( arg, dialogs, RecycleOption.SendToRecycleBin );
					}
					catch ( Exception e )
					{
						return ShowHelp( e.Message );
					}
				}
			}

			return 0;
		}


		public 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

			/*
			Trash.exe,  Version 1.00
			Send specified file(s) to the recycle bin

			Usage:    TRASH.EXE  filespec  [ filespec  [ ... ] ] ]  [ /V ]

			Where:    filespec   file to be sent to the recycle bin (no wildcards)
			          /V         Verbose output, show progress and error dialogs
			                     (default: error dialogs only)
			
			Written by Rob van der Woude
			https://www.robvanderwoude.com
			*/

			#endregion Help Text


			#region Display Help Text

			Console.Error.WriteLine( );

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

			Console.Error.WriteLine( "Send specified file(s) to the recycle bin" );

			Console.Error.WriteLine( );

			Console.Error.Write( "Usage:    " );
			Console.ForegroundColor = ConsoleColor.White;
			Console.Error.WriteLine( "TRASH.EXE  filespec  [ filespec  [ ... ] ] ]  [ /V ]" );
			Console.ResetColor( );

			Console.Error.WriteLine( );
						
			Console.Error.Write( "Where:    " );
			Console.ForegroundColor = ConsoleColor.White;
			Console.Error.Write( "filespec" );
			Console.ResetColor( );
			Console.Error.WriteLine( "   file to be sent to the recycle bin (no wildcards)" );

			Console.ForegroundColor = ConsoleColor.White;
			Console.Error.Write( "          /V         V" );
			Console.ResetColor( );
			Console.Error.WriteLine( "erbose output, show progress and error dialogs" );

			Console.Error.WriteLine( "                     (default: error dialogs only)" );

			Console.Error.WriteLine( );

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

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

			#endregion Display Help Text

			return -1;
		}
	}
}