using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Linq.Expressions;
using System.Runtime.CompilerServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using HtmlToXamlDemo;
using Microsoft.VisualBasic;

namespace JRCookbookBusiness
{
    public static class Utility
    {
        public static string ConvertHTLMLToRTF(string strInputHTML)
        {
            try
            {
                string objXAML = HtmlToXamlConverter.ConvertHtmlToXaml(strInputHTML, false);

                TextWriter asdf;

                if (File.Exists("C:\\ReussData\\DeleteMe.html"))
                {
                    File.Delete("C:\\ReussData\\DeleteMe.html");
                }
                asdf = new StreamWriter("C:\\ReussData\\DeleteMe.html");
                asdf.Write(strInputHTML);
                asdf.Close();
                asdf.Dispose();
                asdf = null;

                if (File.Exists("C:\\ReussData\\DeleteMe.xaml"))
                {
                    File.Delete("C:\\ReussData\\DeleteMe.xaml");
                }
                asdf = new StreamWriter("C:\\ReussData\\DeleteMe.xaml");
                asdf.Write(objXAML);
                asdf.Close() ;
                asdf.Dispose();
                asdf = null;

                if (File.Exists("C:\\ReussData\\DeleteMe.rtf"))
                {
                    File.Delete("C:\\ReussData\\DeleteMe.rtf");
                }
                asdf = new StreamWriter("C:\\ReussData\\DeleteMe.rtf");
                asdf.Write(ConvertXamlToRtf(objXAML));
                asdf.Close();
                asdf.Dispose();
                asdf = null;

                return ConvertXamlToRtf(objXAML);
            }
            catch(Exception ex)
            {
                throw;
            }
            
            
        }
        private static string ConvertXamlToRtf(string xamlText)
        {
            var richTextBox = new RichTextBox();
            MessageBox.Show("Before:" + ControlChars.CrLf + "width = " + richTextBox.Width.ToString() + ControlChars.CrLf
                + "ActualWidth = " + richTextBox.ActualWidth.ToString() + ControlChars.CrLf
                + "ExtentWidth = " + richTextBox.ExtentWidth.ToString() + ControlChars.CrLf
                + "MaxWidth = " + richTextBox.MaxWidth.ToString() + ControlChars.CrLf
                + "ViewportWidth = " + richTextBox.ViewportWidth.ToString());

            richTextBox.Width = 10000;

            MessageBox.Show("Width:" + ControlChars.CrLf + "width = " + richTextBox.Width.ToString() + ControlChars.CrLf
                + "ActualWidth = " + richTextBox.ActualWidth.ToString() + ControlChars.CrLf
                + "ExtentWidth = " + richTextBox.ExtentWidth.ToString() + ControlChars.CrLf
                + "MaxWidth = " + richTextBox.MaxWidth.ToString() + ControlChars.CrLf
                + "ViewportWidth = " + richTextBox.ViewportWidth.ToString());

            if (string.IsNullOrEmpty(xamlText)) return "";
            var textRange = new TextRange(richTextBox.Document.ContentStart, richTextBox.Document.ContentEnd);
            using (var xamlMemoryStream = new MemoryStream())
            {
                using (var xamlStreamWriter = new StreamWriter(xamlMemoryStream))
                {
                    xamlStreamWriter.Write(xamlText);
                    xamlStreamWriter.Flush();
                    xamlMemoryStream.Seek(0, SeekOrigin.Begin);
                    textRange.Load(xamlMemoryStream, DataFormats.Xaml);
                }
            }
            using (var rtfMemoryStream = new MemoryStream())
            {
                textRange = new TextRange(richTextBox.Document.ContentStart, richTextBox.Document.ContentEnd);
                textRange.Save(rtfMemoryStream, DataFormats.Rtf);
                rtfMemoryStream.Seek(0, SeekOrigin.Begin);
                using (var rtfStreamReader = new StreamReader(rtfMemoryStream))
                {
                    return rtfStreamReader.ReadToEnd();
                }
            }
        }
    }


}