using MigraDoc.DocumentObjectModel;
using MigraDoc.Rendering;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Xml.Linq;

namespace ViewComponents.NotVisualComponents
{
	public partial class PdfImages : Component
	{
		public PdfImages()
		{
			InitializeComponent();
		}

		public PdfImages(IContainer container)
		{
			container.Add(this);

			InitializeComponent();
		}

		public bool CreatePdfDoc (ImagesForPDF imagesForPDF)
		{
			Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
			CheckFileExsists(imagesForPDF);
            // создание документа
            Document _document = new Document();
			var style = _document.Styles["Normal"];
			style.Font.Name = "Arial";
			style.Font.Size = 25;
			style = _document.Styles.AddStyle("NormalTitle", "Normal");
			style.Font.Bold = true;

			//добавление заголовка
			var section = _document.AddSection();
			var paragraph = section.AddParagraph(imagesForPDF.header);
			paragraph.Format.Alignment = ParagraphAlignment.Center;
			paragraph.Format.SpaceAfter = "2cm";

			//добавление изображений
			foreach (string path in imagesForPDF.imagepaths)
				if (File.Exists(path)) section.AddImage(path);

			//сохранение документа
			PdfDocumentRenderer renderer = new PdfDocumentRenderer(true);
			renderer.Document = _document;
			renderer.RenderDocument();
			renderer.PdfDocument.Save(imagesForPDF.filepath);

			return true;
		}

		private void CheckFileExsists(ImagesForPDF imagesForPDF)
		{
			if (string.IsNullOrEmpty(imagesForPDF.filepath) || string.IsNullOrEmpty(imagesForPDF.header) || imagesForPDF.imagepaths.Length == 0)
			{
				throw new ArgumentNullException();
			}
			if (!File.Exists(imagesForPDF.filepath))
			{
				throw new FileNotFoundException(imagesForPDF.filepath);
			}
		}

	}
}