using System;
using System.Collections.Generic;
using System.Text;
using iTextSharp.text;
using iTextSharp.text.pdf;
using iTextSharp.text.factories;
using Itenso.Rtf;
using Itenso.Rtf.Parser;
using Itenso.Rtf.Interpreter;
//using Itenso.Rtf.Model;
using Itenso.Rtf.Support;
using Microsoft.Win32;
using Volian.Base.Library;

namespace Volian.Print.Library
{
	public partial class PrintOverride
	{
		public static bool CompressSub = false;
		public static bool CompressSuper = false;
		public static bool CompressPropSubSup = false;
		private static System.Drawing.Color _TextColor = System.Drawing.Color.Empty;
		public static System.Drawing.Color TextColor
		{
			get { return _TextColor; }
			set { _TextColor = value; }
		}
		public static System.Drawing.Color OverrideTextColor(System.Drawing.Color color)
		{
			if (_TextColor == System.Drawing.Color.Empty)
				return color;
			return _TextColor;
		}
		private static System.Drawing.Color _SvgColor = System.Drawing.Color.Empty;
		public static System.Drawing.Color SvgColor
		{
			get { return _SvgColor; }
			set { _SvgColor = value; Volian.Svg.Library.Svg.OverrideColor = value; }
		}
		public static System.Drawing.Color OverrideSvgColor(System.Drawing.Color color)
		{
			if (_SvgColor == System.Drawing.Color.Empty)
				return color;
			return _SvgColor;
		}
		private static System.Drawing.Color _BoxColor = System.Drawing.Color.Empty;
		public static System.Drawing.Color BoxColor
		{
			get { return _BoxColor; }
			set { _BoxColor = value; }
		}
		public static System.Drawing.Color OverrideBoxColor(System.Drawing.Color color)
		{
			if (_BoxColor == System.Drawing.Color.Empty)
				return color;
			return _BoxColor;
		}
		private static System.Drawing.Color _ChangeBarColor = System.Drawing.Color.Empty;
		public static System.Drawing.Color ChangeBarColor
		{
			get { return _ChangeBarColor; }
			set { _ChangeBarColor = value; }
		}
		public static System.Drawing.Color OverrideChangeBarColor(System.Drawing.Color color)
		{
			if (_ChangeBarColor == System.Drawing.Color.Empty)
				return color;
			return _ChangeBarColor;
		}
		private static System.Drawing.Color _DebugColor = System.Drawing.Color.Empty;
		public static System.Drawing.Color DebugColor
		{
			get { return _DebugColor; }
			set { _DebugColor = value; }
		}
		public static System.Drawing.Color OverrideDebugColor(System.Drawing.Color color)
		{
			if (_DebugColor == System.Drawing.Color.Empty)
				return color;
			return _DebugColor;
		}
		public static void Reset()
		{
			DebugColor = System.Drawing.Color.Empty;
			TextColor = System.Drawing.Color.Empty;
			SvgColor = System.Drawing.Color.Empty;
			BoxColor = System.Drawing.Color.Empty;
			ChangeBarColor = System.Drawing.Color.Empty;
		}
	}
	public class Rtf2iTextSharp : RtfVisualVisitorBase
	{
		private bool _HasIndent = false;
		public bool HasIndent
		{
			get { return _HasIndent; }
			set { _HasIndent = value; }
		}
		private static bool _DoingComparison = false;
		public static bool DoingComparison
		{
			get { return Rtf2iTextSharp._DoingComparison; }
			set { Rtf2iTextSharp._DoingComparison = value; }
		}

		private IRtfDocument _RtfDoc;
		private Paragraph _MyParagraph = new Paragraph();
		private iTextSharp.text.Font _MyFont;

		// Allow for definition of a default font:  if the font is not proportional, this gets set.  
		// It is needed to set the chunk's font if the first character of a cell is a hardspace (or various
		// other special cases (see its use below).  Without this, pdfs were using the Helvetica font, 
		// which is a default itextsharp font (this was causing a problem for HLP, their pdfs could not
		// contain a Helvetica font when putting them in their production environment).
		private iTextSharp.text.Font _DefaultFont;
		public iTextSharp.text.Font DefaultFont
		{
			get { return _DefaultFont; }
			set { _DefaultFont = value; }
		}
		private string _MyDebugID = null;
		public string MyDebugID
		{
			get { return _MyDebugID; }
			set { _MyDebugID = value; }
		}

		//		public Rtf2iTextSharp(IRtfDocument rtfDoc, Document doc, PdfWriter writer)
		public Rtf2iTextSharp(IRtfDocument rtfDoc)
		{
			if (rtfDoc == null)
				throw new ArgumentNullException("rtfDoc");
			
			_RtfDoc = rtfDoc;
		}
		public Paragraph Convert()
		{
			int profileDepth = ProfileTimer.Push(">>>> Rtf2ITextSharp.Convert");
			_MyParagraph.Clear();
			_MyFont = null;
			foreach (IRtfVisual visual in _RtfDoc.VisualContent)
			{
				visual.Visit(this);
			}
			//_MyParagraph.SetLeading(0, 1);
			ProfileTimer.Pop(profileDepth);
			return _MyParagraph;
		}
		// ----------------------------------------------------------------------
		protected override void DoVisitBreak(IRtfVisualBreak visualBreak)
		{
			switch (visualBreak.BreakKind)
			{
				case RtfVisualBreakKind.Line:
					Chunk ck = HasIndent ? new Chunk("".PadLeft(200)) : new Chunk("".PadLeft(200));
					_MyParagraph.Add(ck);
					break;
				case RtfVisualBreakKind.Page:
					break;
				case RtfVisualBreakKind.Paragraph:
					Chunk ck1 = HasIndent ? new Chunk("".PadLeft(200)) : Chunk.NEWLINE;
					_MyParagraph.Add(ck1);
					break;
				case RtfVisualBreakKind.Section:
					break;
				default:
					break;
			}
			//_MyParagraph.Add(string.Format("<{0}>", visualBreak.BreakKind.ToString()));
		}
		private void AddChunk(string str, iTextSharp.text.Font font)
		{
			if (font == null)
				_MyParagraph.Add(new Chunk(str));
			else
				_MyParagraph.Add(new Chunk(str, font));
		}
		protected override void DoVisitSpecial(IRtfVisualSpecialChar visualSpecialChar)
		{
			//_MyParagraph.Add(string.Format("<special {0}>", visualSpecialChar.CharKind.ToString()));
			iTextSharp.text.Font activeFont = _MyFont ?? DefaultFont;
			switch (visualSpecialChar.CharKind)
			{
				case RtfVisualSpecialCharKind.Bullet:
					AddChunk("\u2022", activeFont);
					break;
				case RtfVisualSpecialCharKind.EmDash:
					AddChunk("\u2014", activeFont);
					break;
				case RtfVisualSpecialCharKind.EmSpace:
					AddChunk("\u2003", activeFont);
					break;
				case RtfVisualSpecialCharKind.EnDash:
					AddChunk("\u2013", activeFont);
					break;
				case RtfVisualSpecialCharKind.EnSpace:
					AddChunk(" ", activeFont);
					break;
				case RtfVisualSpecialCharKind.LeftDoubleQuote:
					AddChunk("\u201C", activeFont);
					break;
				case RtfVisualSpecialCharKind.LeftSingleQuote:
					AddChunk("\u2018", activeFont);
					break;
				case RtfVisualSpecialCharKind.NonBreakingHyphen:
					AddChunk("\u2011", activeFont);
					break;
				case RtfVisualSpecialCharKind.NonBreakingSpace:
					//iTextSharp.text.Font font = Volian.Svg.Library.VolianPdf.GetFont(sdf);
					AddChunk("\u00A0", activeFont);
					break;
				case RtfVisualSpecialCharKind.OptionalHyphen:
					AddChunk("\u00AD", activeFont);
					break;
				case RtfVisualSpecialCharKind.ParagraphNumberBegin:
					break;
				case RtfVisualSpecialCharKind.ParagraphNumberEnd:
					break;
				case RtfVisualSpecialCharKind.QmSpace:
					break;
				case RtfVisualSpecialCharKind.RightDoubleQuote:
					AddChunk("\u201D", activeFont);
					break;
				case RtfVisualSpecialCharKind.RightSingleQuote:
					AddChunk("\u2019", activeFont);
					break;
				case RtfVisualSpecialCharKind.Tabulator:
					break;
				default:
					break;
			}
		}
		private bool ContainsAllSymbols(string p)
		{
			foreach (char c in p)
				if (c <= '\x7F') return false;
			return true;
		}
		private bool ContainsAnySymbols(string p)
		{
			foreach (char c in p)
				if (c > '\x7F' && c != '\xA0' && c != '\xB0') return true;
			return false;
		}
		protected override void DoVisitText(IRtfVisualText visualText)
		{
			int profileDepth = ProfileTimer.Push(">>>> DoVisitText");
			if (visualText.Format.IsHidden)
			{
				ProfileTimer.Pop(profileDepth);
				return;
			}
			iTextSharp.text.Font font = Volian.Svg.Library.VolianPdf.GetFont(visualText.Format.Font.Name, visualText.Format.FontSize,
				(visualText.Format.IsBold ? iTextSharp.text.Font.BOLD : 0) +
				(visualText.Format.IsItalic ? iTextSharp.text.Font.ITALIC : 0));
			font.Color = new iTextSharp.text.Color(PrintOverride.OverrideTextColor(visualText.Format.ForegroundColor.AsDrawingColor));
			// The following line of code was added to allow for comparisons between the 16bit and 32bit pdf files.  Without
			// the size change, the overlays did not match up.  It seems that the 16bit font size may be inaccurate
			// and the 16bit conversion to be pdf may be off.  
			//if (font.Familyname.StartsWith("Arial") && font.Size == 11 && DoingComparison) font.Size = 11.15f;
			iTextSharp.text.pdf.FontSelector fs = new FontSelector();
			// DEBUG
			//if (visualText.Format.Font.Name != "VESymbFix" && ContainsAnySymbols(visualText.Text))
			//{
			//	Console.WriteLine("Font: {0} TEXT: {1}", visualText.Format.Font.Name, ShowSpecialCharacters(visualText.Text));
			//}
			if (visualText.Format.Font.Name == "VESymbFix" && ContainsAllSymbols(visualText.Text))
			{
				fs.AddFont(font);
				// if the symbol character cannot be found in VESymbFix then check/use the Consolas font
				// We are using the VESymbFix font first because not all of the symbols that we use are in the Consolas font
				// The Consolas font will give us other symbols that we don't have in VESymbFix (ex the Omega)
				fs.AddFont(FontFactory.GetFont("Consolas", BaseFont.IDENTITY_H, BaseFont.EMBEDDED, (visualText.Format.FontSize * 1.1F) / 2,
					(visualText.Format.IsBold ? iTextSharp.text.Font.BOLD : 0) +
					(visualText.Format.IsItalic ? iTextSharp.text.Font.ITALIC : 0), font.Color));
				Phrase ph = fs.Process(visualText.Text);
				foreach (Chunk chk in ph.Chunks)
				{
					AdjustChunk(visualText, font, chk);
					_MyParagraph.Add(chk);
				}
			}
			else
			{
				// The bullet character for some unknown reason was entered in a text font rather than a symbol font
				// switch from x25cf ot x2022 moves to a valid bullet character in the text font
				Chunk chk = new Chunk(visualText.Text.Replace("\u25cf", "\u2022"), font);
					AdjustChunk(visualText, font, chk);
				_MyParagraph.Add(chk);
			}
			ProfileTimer.Pop(profileDepth);
		}

		private void AdjustChunk(IRtfVisualText visualText, iTextSharp.text.Font font, Chunk chk)
		{
			if (visualText.Format.BackgroundColor.AsDrawingColor.ToArgb() != System.Drawing.Color.White.ToArgb())
				chk.SetBackground(new iTextSharp.text.Color(visualText.Format.BackgroundColor.AsDrawingColor));
			if (visualText.Format.IsStrikeThrough)
				chk.SetUnderline(font.Color, 0, 0.05F, 0, .3F, PdfContentByte.LINE_CAP_ROUND); // Relative Based upon font size
			if (visualText.Format.IsUnderline)
				if (visualText.Format.SuperScript < 0)
				{
					if (PrintOverride.CompressSub)
					{
						float yoffundx = (_MyParagraph.Leading < 12 && font.Size >= 12) ? -0.06F : -0.18F;
						chk.SetUnderline(font.Color, 0, 0.07F, 0, yoffundx, PdfContentByte.LINE_CAP_ROUND); // Relative Based upon font size
					}
					else
						chk.SetUnderline(font.Color, 0, 0.05F, 0, -.381F, PdfContentByte.LINE_CAP_ROUND); // Relative Based upon font size
				}
				else if (visualText.Format.SuperScript > 0 && PrintOverride.CompressSuper)
				{
					float yoffundx = (_MyParagraph.Leading < 12 && font.Size >= 12) ? -0.06F : -0.18F;
					chk.SetUnderline(font.Color, 0, 0.07F, 0, yoffundx, PdfContentByte.LINE_CAP_ROUND);
				}
				else
				{
					// If on a compressed printed step (Leading < 12) and a larger underlined font, then set the underlining
					// a little less far down the page.  Without this, the underline was touching the 2nd line of text, if it existed.
					// Any plant that had compressed steps with the font size/underline would have this problem. An example
					// was Braidwood FSG-6, high level steps.
					float yoffund = (_MyParagraph.Leading < 12 && font.Size >= 12) ? -0.06F : -0.131F;
					chk.SetUnderline(font.Color, 0, 0.05F, 0, yoffund, PdfContentByte.LINE_CAP_ROUND); // Relative Based upon font size
				}

			if (visualText.Format.SuperScript > 0)
			{
				if (PrintOverride.CompressPropSubSup)
				{
					chk.SetTextRise(.33F * chk.Font.Size);
					chk.Font.Size *= .75f;
				}
				else
				{
					chk.SetTextRise(.25F * chk.Font.Size);
					if (PrintOverride.CompressSuper) chk.Font.Size = 9;
				}

			}
			else if (visualText.Format.SuperScript < 0)
			{
				if (PrintOverride.CompressPropSubSup)
					chk.Font.Size *= .75f;
				else
				{
					// if the subscript is not compressed or if it is compress but not underlined, then move it down
					if (!PrintOverride.CompressSub || !visualText.Format.IsUnderline) chk.SetTextRise(-.25F * chk.Font.Size);
					if (PrintOverride.CompressSub) chk.Font.Size = 9;
				}
			}
			else
				chk.SetTextRise(0);
			switch (visualText.Format.Alignment)
			{
				case RtfTextAlignment.Center:
					_MyParagraph.Alignment = Element.ALIGN_CENTER;
					break;
				case RtfTextAlignment.Justify:
					_MyParagraph.Alignment = Element.ALIGN_JUSTIFIED;
					break;
				case RtfTextAlignment.Left:
					_MyParagraph.Alignment = Element.ALIGN_LEFT;
					break;
				case RtfTextAlignment.Right:
					_MyParagraph.Alignment = Element.ALIGN_RIGHT;
					break;
				default:
					break;
			}
			if (_MyFont == null)
			{
				_MyFont = font;
				_MyParagraph.Font = _MyFont;
			}
		}

		private string ShowSpecialCharacters(string p)
		{
			StringBuilder sb = new StringBuilder();
			foreach (char c in p)
			{
				int i = (int)c;
				if (i < 20 || i > 127)
					sb.Append(string.Format("<{0:x}>", i));
				else
					sb.Append(c);
			}
			return sb.ToString();
		}// DoVisitText


		// ----------------------------------------------------------------------
		protected override void DoVisitImage(IRtfVisualImage visualImage)
		{
			//_MyParagraph.Add(new Chunk("<Image>"));
			DateTime dt1 = DateTime.Now;
			//System.Drawing.Image img2 = visualImage.ImageForDrawing;
			//Console.WriteLine("1 Time Span {0}", TimeSpan.FromTicks(DateTime.Now.Ticks - dt1.Ticks).TotalMilliseconds);
			//img2.Save(@"c:\datacvrt\x.png");
			System.IO.MemoryStream ms = new System.IO.MemoryStream();

			//Console.WriteLine("2 Time Span {0}", TimeSpan.FromTicks(DateTime.Now.Ticks - dt1.Ticks).TotalMilliseconds);
			Console.WriteLine("Size {0}", visualImage.ImageForDrawing.Size);
			visualImage.ImageForDrawing.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
			//Console.WriteLine("3 Time Span {0}", TimeSpan.FromTicks(DateTime.Now.Ticks - dt1.Ticks).TotalMilliseconds);
			ms.Seek(0, System.IO.SeekOrigin.Begin);
			//Console.WriteLine("4 Time Span {0}", TimeSpan.FromTicks(DateTime.Now.Ticks - dt1.Ticks).TotalMilliseconds);
			iTextSharp.text.Image img = iTextSharp.text.Image.GetInstance(ms);
			//Console.WriteLine("5 Time Span {0}", TimeSpan.FromTicks(DateTime.Now.Ticks - dt1.Ticks).TotalMilliseconds);
			_MyParagraph.Add(img);
			Console.WriteLine("6 Time Span {0}", TimeSpan.FromTicks(DateTime.Now.Ticks - dt1.Ticks).TotalMilliseconds);
		} // DoVisitImage

	}
}