using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using iTextSharp.text.pdf;
using iTextSharp.text;
using VEPROMS.CSLA.Library;

namespace Volian.Print.Library
{
	public partial class vlnTab : vlnText
	{
		/// <summary>
		/// Used to Align Tabs for numeric tabs that can go to 2 digits
		/// </summary>
		private float? _TabAlign;
		public float TabAlign // Offset to Last printable character
		{
			get
			{
				if (_TabAlign == null)
				{
					_TabAlign = 0;
					if (Text != null)
					{
						while (_TabAlign < Text.Length && Text[(int)_TabAlign] == ' ')
							_TabAlign++;
						if (_TabAlign < Text.Length)
						{
							if ("0123456789".Contains(Text[(int)_TabAlign].ToString()))
							{
								while ("0123456789".Contains(Text[(int)_TabAlign].ToString()))
									_TabAlign++;
								_TabAlign--;
							}
						}
						else
							_TabAlign = 0;
					}
				}
				return (float)_TabAlign * MyFont.CharsToTwips;
			}
		}
		private float? _TabOffset;
		public float TabOffset // Offset to first printable character
		{
			get
			{
				if (_TabOffset == null)
				{
					_TabOffset = 0;
					if (Text != null)
					{
						while (_TabOffset<Text.Length && Text[(int)_TabOffset] == ' ')
							_TabOffset++;
					}
				}
				if (_TabOffset >= Text.Length) _TabOffset = 0;
				return (float)_TabOffset * MyFont.CharsToTwips;
			}
		}
		private vlnMacro _MyMacro;
		public vlnMacro MyMacro
		{
			get { return _MyMacro; }
			set { _MyMacro = value; }
		}

		private string symblsStr = "\u25CF\u0394"; // string of possible symbol character in a tab
											 // add symbol characters as needed
											 // "\u25CF" - solid bullet
											 // \x0394 - delta

		private System.Drawing.FontStyle GetSysFontStyle(VE_Font f)
		{
			if (f.Style == E_Style.Italics)
				return System.Drawing.FontStyle.Italic;
			return FontStyle.Regular;
		}
		private float GetTextWidth(VE_Font vefont, string txt, string symblFontName)
		{

			System.Drawing.Font font = new System.Drawing.Font(vefont.Family, (float)vefont.Size, GetSysFontStyle(vefont));
			System.Drawing.Font symbFont = new System.Drawing.Font(symblFontName, (float)vefont.Size);
			iTextSharp.text.Font iFont = Volian.Svg.Library.VolianPdf.GetFont(font);
			iTextSharp.text.Font iSymblFont = Volian.Svg.Library.VolianPdf.GetFont(symbFont);
			float w = 0;
			foreach (char c in txt)
			{
				int idx = symblsStr.IndexOf(c);
				if (idx >= 0) // symbol character - use symbol font to find its width
					w += iSymblFont.BaseFont.GetWidthPointKerned(symblsStr[idx].ToString(), (float)vefont.Size);
				else
					w += iFont.BaseFont.GetWidthPointKerned(c.ToString(), (float)vefont.Size);
			}
			//float w = iFont.BaseFont.GetWidthPointKerned(Text.Replace("\u25CF","@"), (float)vefont.Size);
			return w;
		}
		bool _ScriptCaution = false;

		public bool ScriptCaution
		{
			get { return _ScriptCaution; }
			set { _ScriptCaution = value; }
		}
		bool _SeparateBullet = false;

		public bool SeparateBullet
		{
			get { return _SeparateBullet; }
			set { _SeparateBullet = value; }
		}
		public vlnTab(PdfContentByte cb, vlnParagraph myparent, string origTab, string cleanTab, float xoffset, float yoffset, VE_Font vFont, bool doSectTab, string symblFontName)
		{
			ScriptCaution = (origTab.Contains("Caution") && vFont.Family == "VolianScript");
			MyContentByte = cb;
			MyParent = myparent;
			YOffset = yoffset;
			Text = cleanTab;
			MyFont = vFont;
			float CCCs = GetTextWidth(MyFont, "CCCCCCCCCC", symblFontName);
			float IIIs = GetTextWidth(MyFont, "iiiiiiiiii", symblFontName);
			if (ScriptCaution)
			{
				Text = origTab.Replace("Caution  ", "\uF043\uF061\uF069\uF06E\uF06F\uF074\uF075\uF020\uF020");
				Width = 90;
			}
			else if ((myparent.MyItemInfo.FormatStepData != null) && (myparent.MyItemInfo.FormatStepData.TabData.IdentWidth ?? 0) > 0)
				Width = (float)myparent.MyItemInfo.FormatStepData.TabData.IdentWidth;
			else if (CCCs != IIIs)
				Width = Text.Length * 6; //proportial font (7 chars * 6)
			else
				Width = GetTextWidth(MyFont, (Text != null ? Text : origTab), symblFontName);//MyFont.CharsToTwips * (Text != null ? Text.Length : origTab.Length);
			if ((myparent.MyItemInfo.FormatStepData != null) && myparent.MyItemInfo.FormatStepData.TabData.Bullet.Separate)
				if (myparent.MyItemInfo.MyPrevious != null || myparent.MyItemInfo.NextItem != null)
					SeparateBullet = true;
			//if (MyParent.MyItemInfo.ItemID == 108)//120)
			//    Console.WriteLine("here");
			if (origTab.Contains(@"{!"))
			{
				int mindx = origTab.IndexOf(@"{!");
				int meindx = origTab.IndexOf(@"}", mindx);
				string macro = origTab.Substring(mindx, meindx - mindx+1);
				// Width for placement of macro should be position in the string where the macro was located.
				float lwidth = MyFont.CharsToTwips * (origTab.Length - meindx);
				MyMacro = new vlnMacro(xoffset - lwidth, yoffset, macro.Substring(2, macro.Length - 3));
				origTab = origTab.Replace(macro,"");
				origTab = origTab + " ";
				cleanTab = origTab;
				if (CCCs != IIIs)
					Width = cleanTab.Length * 6; //proportial font (7 chars * 6)
				else
					Width = GetTextWidth(MyFont, (cleanTab != null ? cleanTab : origTab), symblFontName);//MyFont.CharsToTwips * (cleanTab != null ? cleanTab.Length : origTab.Length);
			}
			Rtf = GetRtf(origTab, vFont);
			Rtf = Rtf.Replace("\u0394", @"\f1\u916?\f0 ");		// delta 0x0394
			if (ScriptCaution)
			{
			    Rtf = GetRtf("\u25CFCaution  ", vFont);
				Rtf = Rtf.Replace("\u25CF", @"\f1\fs20              \u9679?\f0\par\f0\fs64 ");		// bullet 25CF // jsj- force bullet size (is different than tab text)
				if (myparent.MyItemInfo.FormatStepData != null && !myparent.MyItemInfo.FormatStepData.AlwaysTab && myparent.MyItemInfo.MyPrevious != null)
					Rtf = Rtf.Replace("Caution  ", @"\u61472?\u61472?\u61472?\u61472?\u61472?\u61472?\u61472?\u61472?\u61472?");
				else
				{
					if (myparent.MyItemInfo.FormatStepData != null && !myparent.MyItemInfo.FormatStepData.AlwaysTab && myparent.MyItemInfo.NextItem == null)
						Rtf = Rtf.Replace(@"\u9679?", "");
					Rtf = Rtf.Replace("Caution  ", @"\u61507?\u61537?\u61557?\u61556?\u61545?\u61551?\u61550?\u61472?\u61472?");
				}
			}
			else
			{
				if (SeparateBullet)
					Rtf = Rtf.Replace("\u25CF", "");
				else
					Rtf = Rtf.Replace("\u25CF", @"\f1\u9679?\f0 ");		// bullet 25CF // jsj- add space after \f0
				//Rtf = Rtf.Replace("\u25CF", @"\f1\fs18\b0\i0        \u9679?\f0 ");		// bullet 25CF // jsj- add space after \f0
				if (myparent.MyItemInfo.FormatStepData != null && !myparent.MyItemInfo.FormatStepData.AlwaysTab && myparent.MyItemInfo.MyPrevious != null)
				{
					//if (scriptCaution)
					//    Rtf = Rtf.Replace("CAUTION  ", @"\u61472?\u61472?\u61472?\u61472?\u61472?\u61472?\u61472?\u61472?\u61472?");
					Rtf = Rtf.Replace("Caution:", "        ");
					Rtf = Rtf.Replace("Note:", "     ");
					Rtf = Rtf.Replace("CAUTION:", "        ");
					Rtf = Rtf.Replace("NOTE:", "     ");
					Rtf = Rtf.Replace("Caution", "       ");
					Rtf = Rtf.Replace("Note", "    ");
					Rtf = Rtf.Replace("CAUTION", "       ");
					Rtf = Rtf.Replace("NOTE", "    ");
				}
			}
			if (ScriptCaution && Rtf.Contains("Caution"))
			{
				// NSP script caution
				iTextSharp.text.Font myfont = pdf.GetFont(vFont.Family, 28, 0, iTextSharp.text.Color.BLACK);
				if (!myfont.BaseFont.CharExists(0x43)) // Capital 'C' exists as text
				{
					//VE_Font vf = new VE_Font("VolianScript", 28, E_Style.Italics, 12);
					// Capital 'C' exists as Symbol
					Rtf = Rtf.Replace("Caution  ", @"\u61507?\u61537?\u61557?\u61556?\u61545?\u61551?\u61550?\u61472?\u61472?");
				}

			}


			// do positioning based on whether format has locations for section 'header'.  If it's not centered, treat
			// it's location more like a 'tab'.
			if (doSectTab)
				XOffset = xoffset;
			else
			{
				//if (MyFont.Family == "Arial" && MyFont.Size == 14)
				//{
				//    System.Drawing.Font font = new System.Drawing.Font("Arial", 14);
				//    iTextSharp.text.Font iFont = Volian.Svg.Library.VolianPdf.GetFont(font);
				//    float w = iFont.BaseFont.GetWidthPointKerned(Text, 14);
				//    Width = w;
				//}
				XOffset = xoffset - Width;
			}
			
		}
		public override float ToPdf(PdfContentByte cb, float yPageStart, float yTopMargin, float yBottomMargin)
		{
			float yLocation = CalculateYOffset(yPageStart, yTopMargin);
			Rtf2Pdf.TextAt(cb, IParagraph, XOffset, yLocation, Width, 100, "", yBottomMargin);
			return yPageStart;
		}
	}
}