using System.Drawing;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;

namespace SelectPdf.Samples.Pages
{
    public class ExistingPdfHeadersAndFootersModel : PageModel
    {
        public void OnGet()
        {

        }

        public IActionResult OnPost()
        {
            // the test file
            string filePdf = Startup.ServerPath + @"\wwwroot\files\selectpdf.pdf";
            string imgFile = Startup.ServerPath + @"\wwwroot\images\logo.png";

            // resize the content
            PdfResizeManager resizer = new PdfResizeManager();
            resizer.Load(filePdf);

            // add extra top and bottom margins
            resizer.PageMargins = new PdfMargins(0, 0, 90, 40);

            // add the header and footer to the existing (now resized pdf document)
            PdfDocument doc = resizer.GetDocument();

            // header template (90 points in height) with image element
            PdfTemplate header = doc.AddTemplate(doc.Pages[0].ClientRectangle.Width, 90);
            PdfImageElement img1 = new PdfImageElement(10, 10, imgFile);
            header.Add(img1);

            // footer template (40 points in height) with text element
            PdfTemplate footer = doc.AddTemplate(new RectangleF(0,
                doc.Pages[0].ClientRectangle.Height - 40,
                doc.Pages[0].ClientRectangle.Width, 40));

            // create a new pdf font
            PdfFont font2 = doc.AddFont(PdfStandardFont.Helvetica);
            font2.Size = 12;

            PdfTextElement text1 = new PdfTextElement(10, 10,
                "Generated by SelectPdf. Page number {page_number} of {total_pages}.",
                font2);
            text1.ForeColor = System.Drawing.Color.Blue;
            footer.Add(text1);

            // save pdf document
            byte[] pdf = doc.Save();

            // close pdf document
            resizer.Close();

            // return resulted pdf document
            FileResult fileResult = new FileContentResult(pdf, "application/pdf");
            fileResult.FileDownloadName = "Document.pdf";
            return fileResult;

        }
    }
}