public void DecoratePdf(string inputFile, string outputFile)
{
using var pdfReader = new PdfReader(inputFile);
using var pdfWriter = new PdfWriter(outputFile);
var pdfDocument = new PdfDocument(pdfReader, pdfWriter);
var totalPages = pdfDocument.GetNumberOfPages();
Console.WriteLine($"Total number of pages: {pdfDocument.GetNumberOfPages()}");
for (var i = 1; i <= totalPages; i++)
{
var page = pdfDocument.GetPage(i);
var dictionary = page.GetPdfObject();
var pdfObject = dictionary.Get(PdfName.Contents);
if (pdfObject.GetType().Equals(typeof(PdfStream)))
{
var pdfStream = (PdfStream)pdfObject;
var data = pdfStream.GetBytes();
var replacedData = JavaUtil.GetStringForBytes(data)
.Replace(PdfFormation.TOTAL_PAGE_TEMPLATE, totalPages.ToString());
pdfStream.SetData(Encoding.UTF8.GetBytes(replacedData));
}
}
pdfDocument.Close();
}
