using System;
using System.Collections.Generic;
using System.Text;
using VEPROMS.CSLA.Library;
using iTextSharp.text.pdf;
using iTextSharp.text;
using System.IO;
using VEPROMS.CSLA.Library;
using System.Text.RegularExpressions;
//using Volian.Generic;

namespace Volian.Print.Library
{
	public class PDFReport
	{
		private ICollection<ItemInfo> _ResultList;
		public ICollection<ItemInfo> ResultList
		{
			get { return _ResultList; }
			set { _ResultList = value; }
		}
		private string _FileName;
		public string FileName
		{
			get { return _FileName; }
			set { _FileName = value; }
		}
		private string _ReportTitle;
		public string ReportTitle
		{
			get { return _ReportTitle; }
			set { _ReportTitle = value; }
		}
		private bool _ShowAnnotations = true;
		public bool ShowAnnotations
		{
			get { return _ShowAnnotations; }
			set { _ShowAnnotations = value; }
		}
		private string _SearchString;
		public string SearchString
		{
			get { return _SearchString; }
			set { _SearchString = VEPROMS.CSLA.Library.ItemInfo.ConvertToDisplayText(value); }
		}
		public PDFReport(string reportTitle, ICollection<ItemInfo> resultList, string fileName)
		{
			_ResultList = resultList;
			_FileName = fileName;
			_ReportTitle = VEPROMS.CSLA.Library.ItemInfo.ConvertToDisplayText(reportTitle);
		}
		public void Build2()
		{
			iTextSharp.text.Document document = new iTextSharp.text.Document(PageSize.LETTER, 36, 36, 36, 36);
			try
			{
				PdfWriter writer = PdfWriter.GetInstance(document, new FileStream(_FileName, FileMode.Create));

				// we add some meta information to the document
				document.SetMargins(36, 36, 36, 36);
				// step 3: we open the document
				document.Open();
				AddTable(document, 20, 80);
				//AddTable(document, 10, 90);
				//AddTable(document, 10, 100);
				//AddTable(document, 15, 75);
				//AddTable(document, 20, 70);
				//AddTable(document, 25, 65);
				//AddTable(document, 30, 60);
				document.Close();
			}
			catch (Exception ex)
			{
			}
		}

		private void AddTable(iTextSharp.text.Document document, int width1, int width2)
		{
			float[] headerwidths = { width1, width2 };
			PdfPTable datatable = new PdfPTable(headerwidths);
			datatable.HeaderRows = 3;
			datatable.FooterRows = 1;
			//datatable.Padding = 4;
			//datatable.DefaultCell.Padding = 4;
			//datatable.Spacing = 0;
			//datatable.setBorder(Rectangle.NO_BORDER);
			//datatable.Widths = headerwidths;
			//datatable.WidthPercentage = 100;
			datatable.TotalWidth = (width1 + width2) * 5;
			datatable.LockedWidth = true;
			// the first cell spans 10 columns
			//iTextSharp.text.Font f1 = FontFactory.GetFont("Arial Unicode MS", BaseFont.IDENTITY_H, BaseFont.EMBEDDED, 14, Font.BOLD);
			iTextSharp.text.Font f1 = pdf.GetFont("Arial Unicode MS", 14, 1, Color.BLACK);

			PdfPCell cell = new PdfPCell(new Phrase(ReportTitle, f1));
			//Font f2 = FontFactory.GetFont(FontFactory.HELVETICA, 10);
			//FontFactory.RegisterDirectory(FontFind.FontDir);
			//iTextSharp.text.Font f2 = FontFactory.GetFont("Arial Unicode MS", BaseFont.IDENTITY_H, BaseFont.EMBEDDED, 10);
			iTextSharp.text.Font f2 = pdf.GetFont("Arial Unicode MS", 10, 0, Color.BLACK);
			//iTextSharp.text.Font f3 = FontFactory.GetFont("Prestige Elite Tall", BaseFont.IDENTITY_H, BaseFont.EMBEDDED, 9);
			iTextSharp.text.Font f3 = pdf.GetFont("Prestige Elite Tall", 9, 0, Color.BLACK);
			cell.HorizontalAlignment = Element.ALIGN_CENTER;
			//cell.Leading = 20;
			cell.Colspan = 2;
			//cell.Border = Rectangle.NO_BORDER;
			cell.BackgroundColor = new Color(0xD0, 0xF0, 0xF0);
			datatable.AddCell(cell);
			Color subHeaderColor = new Color(0xD0, 0xF0, 0xD0);
			// These cells span 2 rows
			//datatable.DefaultCellBorderWidth = 2;
			//datatable.DefaultHorizontalAlignment = 1;
			//datatable.DefaultRowspan = 2;
			datatable.DefaultCell.Padding = 4;
			datatable.DefaultCell.HorizontalAlignment = Element.ALIGN_CENTER;
			AddCell(datatable, "Step", f2, subHeaderColor);
			AddCell(datatable, "Text", f2, subHeaderColor);
			AddCell(datatable, "Step", f2, subHeaderColor);
			AddCell(datatable, "Text", f2, subHeaderColor);
			datatable.DefaultCell.HorizontalAlignment = Element.ALIGN_LEFT;
			//datatable.DefaultCellBorderWidth = 1;
			//datatable.DefaultRowspan = 1;
			//datatable.DefaultHorizontalAlignment = Element.ALIGN_LEFT;
			string lastDvPath = "";
			string lastPath = "";
			Color AnnoColor = new Color(0xFF, 0xFF, 0xC0);
			Color TextColor = Color.WHITE;
			Color SectColor = Color.LIGHT_GRAY;
			foreach (ItemInfo item in _ResultList)
			{
				if (item.SearchDVPath != lastDvPath)
					AddGroup(datatable, item.SearchDVPath, lastDvPath, f2, false, new Color(0xC0, 0xFF, 0xC0));
				lastDvPath = item.SearchDVPath;
				//if (item.SearchPath != lastPath)
				string stepPath = AddGroup(datatable, item.SearchPath, lastPath, f2, true, new Color(0xE0, 0xFF, 0xE0));
				lastPath = item.SearchPath;
				AddCell(datatable, stepPath, f2, (item.IsSection ? SectColor : TextColor));
				if (item.DisplayText.Contains("|")) // Need a better way to determine if it is a table.
					AddCell(datatable, item.DisplayText, f3, TextColor);
				else
					AddCell(datatable, item.DisplayText, f2, (item.IsSection ? SectColor : TextColor));
				if (item.ItemAnnotationCount > 0)
				{
					foreach (AnnotationInfo ai in item.ItemAnnotations)
					{
						AddCell(datatable, ai.MyAnnotationType.Name, f2, AnnoColor);
						AddCell(datatable, ai.SearchText, f2, AnnoColor);
					}
				}
			}
			document.Add(datatable);
		}
		//private static void AddCell(PdfPTable datatable, string str, iTextSharp.text.Font fnt, Color bgColor)
		//{
		//  PdfPCell cell = new PdfPCell(new Phrase(str, fnt));
		//  cell.BackgroundColor = bgColor;
		//  datatable.AddCell(cell);
		//}
		private string AddGroup(PdfPTable datatable, string dvPath, string lastDvPath, Font f2, bool StripLast, Color bgColor)
		{
			int level = 0;
			string retval = "";
			StringBuilder sb = new StringBuilder();
			string ttt = dvPath.Replace("\x11", "    ");
			string[] OldPath = lastDvPath.Split("\x7".ToCharArray());
			string[] NewPath = dvPath.Split("\x7".ToCharArray());
			string sep = "";
			bool foundMisMatch = false;
			int n = NewPath.Length;
			if (StripLast)
			{
				retval = NewPath[--n];
				if (retval.Contains("\x11"))
					retval = retval.Substring(0, retval.IndexOf("\x11"));
			}
			for (int j = 0; j < n; j++)
			{
				if (NewPath[j] != "" && (foundMisMatch || OldPath.Length < j + 1 || NewPath[j] != OldPath[j]))
				{
					sb.Append(sep + "".PadLeft(2 * level) + NewPath[j].Replace("\x11", "    ")).Replace(@"\u8209?", "-");
					sep = "\r\n";
					foundMisMatch = true;
				}
				level++;
			}
			if (sb.ToString() != "")
			{
				PdfPCell cell = new PdfPCell(new Phrase(sb.ToString(), f2));
				cell.Colspan = 2;
				cell.BackgroundColor = bgColor;
				cell.BorderWidthTop = 1;
				datatable.AddCell(cell);
			}
			return retval;
		}
		public void Build()
		{
			iTextSharp.text.Document document = new iTextSharp.text.Document(PageSize.LETTER, 36, 36, 36, 36);
			if (!CreateResultsPDF(document)) return;
			try
			{
				BuildTable1(document);
			}
			catch (Exception ex)
			{
				StringBuilder msg = new StringBuilder();
				document.Add(new Paragraph("Error:"));
				while (ex != null)
				{
					document.Add(new Paragraph(ex.GetType().Name));
					document.Add(new Paragraph(ex.Message));
					ex = ex.InnerException;
				}
			}
			finally
			{
				if (document.IsOpen())
				{
					document.Close();
					System.Diagnostics.Process.Start(_FileName);
				}
			}
		}
		/// <summary>
		/// Attempt to open a file for the PDF output.
		/// If the file cannot be opened because it is in use, try adding a suffix
		/// If the file cannot be opened for some other reason, display an error message
		/// </summary>
		/// <param name="document"></param>
		/// <returns></returns>
		private bool CreateResultsPDF(iTextSharp.text.Document document)
		{
			bool result = false;
			string suffix = "";
			int i = 0;
			// Try to open a file for creating the PDF.
			while (result == false)
			{
				string fileName = _FileName.ToLower().Replace(".pdf", suffix + ".pdf");
				try
				{
					PdfWriter writer = PdfWriter.GetInstance(document, new FileStream(fileName, FileMode.Create));
					document.SetMargins(36, 36, 36, 36);
					document.Open();
					_FileName = fileName;
					result = true;
				}
				catch (System.IO.IOException exIO)
				{

					if (exIO.Message.Contains("because it is being used by another process")) 
						suffix = string.Format("_{0}", ++i);// If this file is in use, increment the suffix and try again
					else // If some other error, display a message and don't print the results
					{
						ShowException(exIO);
						return false;
					}
				}
				catch (Exception ex)
				{
					ShowException(ex);
					return false; // Could not open the output file
				}
			}
			return true;
		}
		private static void ShowException(Exception ex)
		{
			Console.WriteLine("{0} - {1}", ex.GetType().Name, ex.Message);
			StringBuilder msg = new StringBuilder();
			string sep = "";
			string indent = "";
			while (ex != null)
			{
				msg.Append(string.Format("{0}{1}{2}:\r\n{1}{3}", sep, indent, ex.GetType().Name, ex.Message));
				ex = ex.InnerException;
				sep = "\r\n";
				indent += "  ";
			}
			System.Windows.Forms.MessageBox.Show(msg.ToString(), "Error during PDF creation for search:", System.Windows.Forms.MessageBoxButtons.OK, System.Windows.Forms.MessageBoxIcon.Exclamation);
		}
		/// <summary>
		/// Use Cells within Cells to see if I can limit the way Cells break from Page to Page
		/// </summary>
		/// <param name="document"></param>
		private void BuildTable1(iTextSharp.text.Document document)
		{
			float[] headerwidths = { 20, 80 };
			PdfPTable datatable = new PdfPTable(headerwidths);
			datatable.HeaderRows = 3;
			datatable.FooterRows = 1;
			datatable.TotalWidth = document.PageSize.Width - document.LeftMargin - document.RightMargin;
			datatable.LockedWidth = true;
			//FontFactory.RegisterDirectory(FontFind.FontDir);
			//iTextSharp.text.Font f1 = FontFactory.GetFont("Arial Unicode MS", BaseFont.IDENTITY_H, BaseFont.EMBEDDED, 14, Font.BOLD);
			//iTextSharp.text.Font f2 = FontFactory.GetFont("Arial Unicode MS", BaseFont.IDENTITY_H, BaseFont.EMBEDDED, 10);
			//iTextSharp.text.Font f3 = FontFactory.GetFont("Prestige Elite Tall", BaseFont.IDENTITY_H, BaseFont.EMBEDDED, 9);
			iTextSharp.text.Font f1 = pdf.GetFont("Arial Unicode MS", 14, 1, Color.BLACK);
			iTextSharp.text.Font f2 = pdf.GetFont("Arial Unicode MS", 10, 0, Color.BLACK);
			iTextSharp.text.Font f3 = pdf.GetFont("Prestige Elite Tall", 9, 0, Color.BLACK);
			PdfPCell cell = new PdfPCell(new Phrase(ReportTitle, f1));
			cell.HorizontalAlignment = Element.ALIGN_CENTER;
			cell.Colspan = 2;
			cell.BackgroundColor = new Color(0xD0, 0xF0, 0xF0);
			datatable.AddCell(cell);
			Color subHeaderColor = new Color(0xD0, 0xF0, 0xD0);
			datatable.DefaultCell.Padding = 4;
			datatable.DefaultCell.HorizontalAlignment = Element.ALIGN_CENTER;
			AddCell(datatable, "Step", f2, subHeaderColor);
			AddCell(datatable, "Text", f2, subHeaderColor);
			AddCell(datatable, "Step", f2, subHeaderColor);
			AddCell(datatable, "Text", f2, subHeaderColor);
			datatable.DefaultCell.HorizontalAlignment = Element.ALIGN_LEFT;
			string lastDvPath = "";
			string lastPath = "";
			Color AnnoColor = new Color(0xFF, 0xFF, 0xC0);
			Color TextColor = Color.WHITE;
			Color SectColor = Color.LIGHT_GRAY;
			foreach (ItemInfo item in _ResultList)
			{
				if (item.SearchDVPath != lastDvPath)
					AddGroup(datatable, item.SearchDVPath, lastDvPath, f2, false, new Color(0xC0, 0xFF, 0xC0));
				lastDvPath = item.SearchDVPath;
				string stepPath = AddGroup(datatable, item.SearchPath, lastPath, f2, true, new Color(0xE0, 0xFF, 0xE0));
				lastPath = item.SearchPath;
				AddCell(datatable, stepPath, f2, (item.IsSection ? SectColor : TextColor));
				if (item.DisplayText.Contains("|")) // Need a better way to determine if it is a table.
					AddCell(datatable, item.DisplayText, f3, TextColor);
				else
					AddCell(datatable, item.DisplayText, f2, (item.IsSection ? SectColor : TextColor));
				if (item.ItemAnnotationCount > 0)
				{
					foreach (AnnotationInfo ai in item.ItemAnnotations)
					{
						AddCell(datatable, ai.MyAnnotationType.Name, f2, AnnoColor);
						AddCell(datatable, ai.SearchText, f2, AnnoColor);
					}
				}
			}
			document.Add(datatable);
		}
		private void AddCell(PdfPTable datatable, string str, iTextSharp.text.Font fnt, Color bgColor)
		{
			iTextSharp.text.Font fntBold = new Font(fnt.BaseFont, fnt.Size, Font.BOLD, Color.RED);
			Phrase p = BuildPhrase2(str, fnt, fntBold);
			PdfPCell cell = new PdfPCell(p);
			cell.PaddingBottom = 4;
			cell.BackgroundColor = bgColor;
			datatable.AddCell(cell);
		}

		private Phrase BuildPhrase(string str, Font fnt, Font fntBold)
		{
			Phrase p = new Phrase();
			if (_SearchString != null)
			{
				while (str.ToLower().Contains(_SearchString.ToLower()))
				{
					int iStart = str.ToLower().IndexOf(_SearchString.ToLower());
					if (iStart > 0) p.Add(new Phrase(str.Substring(0, iStart), fnt));
					Phrase p2 = new Phrase(str.Substring(iStart, _SearchString.Length), fntBold);
					p.Add(p2);
					str = str.Substring(iStart + _SearchString.Length);
				}
			}
			if (str.Length > 0) p.Add(new Phrase(str, fnt));
			return p;
		}
		private string _RegexSearchString = null;
		private string RegexSearchString
		{
			get
			{
				if (_RegexSearchString == null)
				{
					_RegexSearchString = _SearchString;
					if (_RegexSearchString[0] == '%')
						_RegexSearchString = _RegexSearchString.Substring(1);
					if (_RegexSearchString[_RegexSearchString.Length - 1] == '%')
						_RegexSearchString = _RegexSearchString.Substring(0, _RegexSearchString.Length - 1);
					_RegexSearchString = _RegexSearchString.Replace("%", ".*");
				}
				return _RegexSearchString;
			}
		}
		private Phrase BuildPhrase2(string str, Font fnt, Font fntBold)
		{
			Phrase p = new Phrase();
			int lastIndex = 0;
			if ((_SearchString ?? "") != "")
			{
				Regex reg = new Regex(RegexSearchString, RegexOptions.Multiline | RegexOptions.IgnoreCase);
				foreach (Match m in reg.Matches(str))
				{
					if (m.Index > 0)
						p.Add(new Phrase(str.Substring(lastIndex, m.Index - lastIndex), fnt));
					Chunk chk = new Chunk(m.Value, fnt);
					//Phrase p2 = new Phrase();
					//foreach (Chunk chk in p2.Chunks) 
					chk.SetBackground(Color.YELLOW);
					p.Add(chk);
					lastIndex = m.Index + m.Length;
				}
			}
			p.Add(new Phrase(str.Substring(lastIndex), fnt));
			return p;
		}

	}
}