using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;
using iTextSharp.text.pdf;
using iTextSharp.text;

namespace MergePDFs
{
	public partial class frmMergePDFs : Form
	{
		public string Status 
		{
			get { return tsslStatus.Text; }
			set { tsslStatus.Text = value; Application.DoEvents(); }
		}
		public frmMergePDFs()
		{
			InitializeComponent();
		}

		private void btnFolder_Click(object sender, EventArgs e)
		{
			fbd.SelectedPath = tbFolder.Text;
			if (fbd.ShowDialog() == DialogResult.OK)
				tbFolder.Text = fbd.SelectedPath;
		}
		private void btnMerge_Click(object sender, EventArgs e)
		{
			if (sfd.ShowDialog() == DialogResult.OK)
			{
				Document doc = new Document();
				PdfWriter writer = PdfWriter.GetInstance(doc, new FileStream(sfd.FileName, FileMode.Create));
				//writer.PageEvent = new MyPageHelper("Merge2", new Color(System.Drawing.Color.CornflowerBlue));
				doc.Open();
				PdfContentByte canvas = writer.DirectContent;
				DirectoryInfo pdfFolder = new DirectoryInfo(tbFolder.Text);
				FileInfo[] myFiles = pdfFolder.GetFiles("*.pdf");
				foreach (FileInfo myFile in myFiles)
				{
					PdfReader reader = new PdfReader(myFile.FullName);
					int numPages = reader.NumberOfPages;
					int currentPageNumber = 0;
					PdfOutline outline = null;
					do
					{
						currentPageNumber += 1;
						Status = string.Format("Processing {0} page {1}", myFile.Name, currentPageNumber);
						doc.SetPageSize(PageSize.LETTER);
						doc.NewPage();
						PdfImportedPage page = writer.GetImportedPage(reader, currentPageNumber);
						PdfDestination dest = new PdfDestination(PdfDestination.FIT);
						if (currentPageNumber == 1)
							outline = new PdfOutline(canvas.RootOutline, dest, myFile.Name, false);
						else
							new PdfOutline(outline, dest, "Page " + currentPageNumber.ToString(), false);
						canvas.AddTemplate(page, 0, 0);
						//DrawOutlines(canvas);
					} while (currentPageNumber < numPages);
				}
				doc.Close();
				if (MessageBox.Show("Do you want to open the merged file?", "Merging Complete", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
					System.Diagnostics.Process.Start(sfd.FileName);
			}
			Status = "Processing Complete";
		}
	}
}