using MigraDoc.DocumentObjectModel;
using MigraDoc.DocumentObjectModel.Tables;
using MigraDoc.Rendering;
using ShabComponentsLibrary.OfficePackage.HelperEnums;
using ShabComponentsLibrary.OfficePackage.HelperModels;

namespace ShabComponentsLibrary.OfficePackage
{
	internal class SaveToPdf
	{
		private Document? _document;
		private Section? _section;
		private Table? _table;

		private static ParagraphAlignment GetParagraphAlignment(PdfParagraphAlignmentType Type)
		{
			return Type switch
			{
				PdfParagraphAlignmentType.Center => ParagraphAlignment.Center,
				PdfParagraphAlignmentType.Left => ParagraphAlignment.Left,
				PdfParagraphAlignmentType.Rigth => ParagraphAlignment.Right,
				_ => ParagraphAlignment.Justify,
			};
		}

		private static void DefineStyles(Document Document)
		{
			var Style = Document.Styles["Normal"];
			Style.Font.Name = "Times New Roman";
			Style.Font.Size = 12;

			Style = Document.Styles.AddStyle("NormalTitle", "Normal");
			Style.Font.Bold = true;
		}

		public void CreatePdf()
		{
			System.Text.Encoding.RegisterProvider(System.Text.CodePagesEncodingProvider.Instance);
			_document = new Document();
			DefineStyles(_document);

			_section = _document.AddSection();
		}

		public void CreateParagraph(PdfParagraph PdfParagraph)
		{
			if (_section == null)
				return;

			var Paragraph = _section.AddParagraph(PdfParagraph.Text);

			Paragraph.Format.SpaceAfter = "0.1cm";
			Paragraph.Format.Alignment = GetParagraphAlignment(PdfParagraph.ParagraphAlignment);
			Paragraph.Style = PdfParagraph.Style;
		}

		public void CreateTable(List<string> Columns)
		{
			if (_document == null)
				return;

			_table = _document.LastSection.AddTable();
			foreach (var Column in Columns)
			{
				_table.AddColumn(Column);
			}
		}

		public void CreateRow(PdfRowParameters RowParameters)
		{
			if (_table == null)
				return;

			var Row = _table.AddRow();
			for (int i = 0; i < RowParameters.Texts.Count; ++i)
			{
				Row.Cells[i].AddParagraph(RowParameters.Texts[i]);
				
				if (i == 0 && !string.IsNullOrEmpty(RowParameters.FirstCellStyle))
				{
					Row.Cells[i].Style = RowParameters.FirstCellStyle;
				}
				else if (!string.IsNullOrEmpty(RowParameters.Style))
				{
					Row.Cells[i].Style = RowParameters.Style;
				}

				if (i == 0 && RowParameters.FirstCellParagraphAlignment != null)
				{
					Row.Cells[i].Format.Alignment = GetParagraphAlignment((PdfParagraphAlignmentType)RowParameters.FirstCellParagraphAlignment);
				}
				else
				{
					Row.Cells[i].Format.Alignment = GetParagraphAlignment(RowParameters.ParagraphAlignment);
				}

				if (RowParameters.RowHeight is not null)
				{
					Row.Height = RowParameters.RowHeight;
				}

				Unit borderWidth = 0.5;
				Row.Cells[i].Borders.Left.Width = borderWidth;
				Row.Cells[i].Borders.Right.Width = borderWidth;
				Row.Cells[i].Borders.Top.Width = borderWidth;
				Row.Cells[i].Borders.Bottom.Width = borderWidth;
				// Row.Cells[i].Format.Alignment = GetParagraphAlignment(RowParameters.ParagraphAlignment);
				Row.Cells[i].VerticalAlignment = VerticalAlignment.Center;
			}
		}

		public void SavePdf(string Filename)
		{
			var Renderer = new PdfDocumentRenderer(true)
			{
				Document = _document
			};

			Renderer.RenderDocument();
			Renderer.PdfDocument.Save(Filename);
		}
	}
}