using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.IO;
using PdfSharp.Drawing;
using PdfSharp.Pdf;

namespace Library14Petrushin
{
    public partial class PdfImg : Component
    {
        public PdfImg()
        {
            InitializeComponent();
        }

        public PdfImg(IContainer container)
        {
            container.Add(this);
            InitializeComponent();
        }

        public void CreatePdfDocument(string fileName, string documentTitle, List<ImageData> images)
        {
            if (string.IsNullOrEmpty(fileName) || string.IsNullOrEmpty(documentTitle) || images == null || images.Count == 0)
            {
                throw new ArgumentException("Все входные данные должны быть заполнены.");
            }

            PdfDocument document = new PdfDocument();

            PdfPage firstPage = document.AddPage();
            XGraphics gfxFirstPage = XGraphics.FromPdfPage(firstPage);
            XFont font = new XFont("Arial", 20, XFontStyleEx.BoldItalic);
            gfxFirstPage.DrawString(documentTitle, font, XBrushes.Black, new XRect(0, 0, firstPage.Width, 50), XStringFormats.Center);

            foreach (var imageData in images)
            {
                PdfPage page = document.AddPage();
                XGraphics gfx = XGraphics.FromPdfPage(page);

                using (XImage img = XImage.FromFile(imageData.ImagePath))
                {
                    double imageWidth = img.PixelWidth * 72 / img.HorizontalResolution;
                    double imageHeight = img.PixelHeight * 72 / img.VerticalResolution;

                    double scale = Math.Min(page.Width / imageWidth, page.Height / imageHeight);

                    gfx.DrawImage(img, 0, 0, imageWidth * scale, imageHeight * scale);
                }
            }

            document.Save(fileName);
        }
    }

    public class ImageData
    {
        public string ImagePath { get; set; }
    }
}