using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using unoidl.com.sun.star.beans;
using unoidl.com.sun.star.frame;
using unoidl.com.sun.star.lang;
using unoidl.com.sun.star.uno;


namespace RobvanderWoude
{
	internal class ODT2Docx
	{
		static readonly string progver = "1.00";


		static int Main( string[] args )
		{
			string fileIn, fileOut;


			#region Command Line Arguments

			if ( args.Length == 0 || args.Length > 2 || args.Contains( "/?" ) )
			{
				return ShowHelp( );
			}

			fileIn = Path.GetFullPath( args[0] );
			if ( !Path.GetExtension( fileIn ).Equals( ".odt", StringComparison.OrdinalIgnoreCase ) )
			{
				return ShowHelp( "Invalid input file type/extension" );
			}
			if ( !File.Exists( fileIn ) )
			{
				return ShowHelp( "Input file does not exist" );
			}
			if ( !Directory.GetParent( fileIn ).Exists )
			{
				return ShowHelp( "Parent folder of input file does not exist" );
			}

			if ( args.Length == 2 )
			{
				fileOut = Path.GetFullPath( args[1] );
				if ( !Path.GetExtension( fileIn ).Equals( ".docx", StringComparison.OrdinalIgnoreCase ) )
				{
					return ShowHelp( "Invalid output file type/extension" );
				}
				if ( !Directory.GetParent( fileOut ).Exists )
				{
					return ShowHelp( "Parent folder of output file does not exist" );
				}
			}
			else
			{
				fileOut = Path.Combine( Path.GetDirectoryName( fileIn ), Path.GetFileNameWithoutExtension( fileIn ) + ".docx" );
			}

			#endregion Command Line Arguments


			#region Requirements

			if ( typeof( XComponentContext ) == null )
			{
				return ShowHelp( "OpenOffice/LibreOffice SDK was not found." );
			}

			#endregion Requirements


			bool success = SaveOdtAsDocx( fileIn, fileOut );
			if ( !success )
			{
				return ShowHelp( "Could not convert and save the file" );
			}

			return 0;
		}


		static bool SaveOdtAsDocx( string fileIn, string fileOut )
		{
			//try
			{
				// The main functionality uses OpenOffice's UNO components
				// http://en.wikipedia.org/wiki/Universal_Network_Objects
				string urlIn = "file:///" + Path.GetFullPath( fileIn ).Replace( "\\", "/" );
				string urlOut = "file:///" + Path.GetFullPath( fileOut ).Replace( "\\", "/" );
				XComponentContext unoBootstrap = uno.util.Bootstrap.bootstrap( );
				XMultiServiceFactory unoServiceMan = (XMultiServiceFactory)unoBootstrap.getServiceManager( );
				XComponentLoader unoDesk = (XComponentLoader)unoServiceMan.createInstance( "com.sun.star.frame.Desktop" );
				PropertyValue[] inputProperties = new PropertyValue[1];
				inputProperties[0] = new PropertyValue( );
				inputProperties[0].Name = "Hidden";
				inputProperties[0].Value = new uno.Any( true );
				XComponent unoDoc = unoDesk.loadComponentFromURL( urlIn, "_blank", 0, inputProperties );
				PropertyValue[] outputProperties = new PropertyValue[1];
				outputProperties[0] = new PropertyValue( );
				outputProperties[0].Name = "FilterName";
				outputProperties[0].Value = new uno.Any( "MS Word 2007 XML" );
				( (XStorable)unoDoc ).storeToURL( urlOut, outputProperties );
				( (XComponent)unoDoc ).dispose( );
				unoDoc = null;
				return true;
			}/*
			catch ( unoidl.com.sun.star.uno.Exception )
			{
				return false;
			}*/
		}


		#region Error Handling

		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

			/*
			ODT2Docx,  Version 1.00
			Save LibreOffice/OpenOffice Writer .odt files as Word .docx

			Usage:    ODT2PDF  inputfile.odt  [ outputfile.docx ]

			Where:    inputfile.odt    is the LibreOffice/OpenOffice file to be converted
			          outputfile.docx  is the path of the output .docx file
			                           (default: name and parent folder of inputfile)

			Notes:    Requires LibreOffice or OpenOffice, its SDK and a Java runtime.
			          Tested with LibreOffice 24.8.0.3 and Java 22.0.1+8-16.
			          Return code ("Errorlevel") 1 in case of errors, otherwise 0.

			Written by Rob van der Woude
			https://www.robvanderwoude.com
			*/

			#endregion Help Text


			#region Display Help Text

			Console.Error.WriteLine( );

			Console.Error.WriteLine( "ODT2Docx,  Version {0}", progver );

			Console.Error.WriteLine( "Save LibreOffice/OpenOffice Writer .odt files as Word .docx" );

			Console.Error.WriteLine( );

			Console.Error.Write( "Usage:    " );
			Console.ForegroundColor = ConsoleColor.White;
			Console.Error.WriteLine( "ODT2PDF  inputfile.odt  [ outputfile.docx ]" );
			Console.ResetColor( );

			Console.Error.WriteLine( );

			Console.Error.Write( "Where:    " );
			Console.ForegroundColor = ConsoleColor.White;
			Console.Error.Write( "inputfile.odt" );
			Console.ResetColor( );
			Console.Error.WriteLine( "    is the LibreOffice/OpenOffice file to be converted" );

			Console.ForegroundColor = ConsoleColor.White;
			Console.Error.Write( "          outputfile.docx" );
			Console.ResetColor( );
			Console.Error.WriteLine( "  is the path of the output .docx file" );

			Console.Error.WriteLine( "                           (default: name and parent folder of inputfile)" );

			Console.Error.WriteLine( );

			Console.Error.WriteLine( "Notes:    Requires LibreOffice or OpenOffice, its SDK and a Java runtime." );

			Console.Error.WriteLine( "          Tested with LibreOffice 24.8.0.3 and Java 22.0.1+8-16." );

			Console.Error.WriteLine( "          Return code (\"Errorlevel\") 1 in case of errors, otherwise 0." );

			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;
		}

		#endregion Error Handling
	}
}