using MigraDoc.DocumentObjectModel;
using MigraDoc.DocumentObjectModel.Tables;
using MigraDoc.Rendering;
using PdfSharp.Pdf;
using ServiceSourceBusinessLogic.OfficePackage.HelperEnums;
using ServiceSourceBusinessLogic.OfficePackage.HelperModels;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ServiceSourceBusinessLogic.OfficePackage.Implements {
    public class SaveToPdf : AbstractSaveToPdf {

        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.Right => ParagraphAlignment.Right,
                _ => ParagraphAlignment.Justify
            };
        }

        // Создание стилей для документа
        private static void DefineStyles(Document document) {
            var style = document.Styles["Normal"];
            style.Font.Name = "Times New Roman";
            style.Font.Size = 14;
            style = document.Styles.AddStyle("NormalTitle", "Normal");
            style.Font.Bold = true;
        }

        protected override void CreateParagraph(PdfParagraph pdfParagraph) {
            if (_section == null) {
                return;
            }
            var paragraph = _section.AddParagraph(pdfParagraph.Text);
            paragraph.Format.SpaceAfter = "1cm";
            paragraph.Format.Alignment = GetParagraphAlignment(pdfParagraph.alignmentType);
            paragraph.Style = pdfParagraph.Style;
        }

        protected override void CreateRow(PdfRowParameters rowParameters) {
            if (_table == null) {
                return;
            }
            var row = _table.AddRow();
            for (int i = 0; i < rowParameters.Text.Count; ++i) {
                // заполнение ячейки (добавление параграфа в ячейку)
                row.Cells[i].AddParagraph(rowParameters.Text[i]);
                if (!string.IsNullOrEmpty(rowParameters.Style)) {
                    row.Cells[i].Style = rowParameters.Style;
                }
                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.alignmentType);
                row.Cells[i].VerticalAlignment = VerticalAlignment.Center;
            }
        }

        protected override void CreateTable(List<string> columns) {
            if (_document == null) {
                return;
            }
            _table = _document.LastSection.AddTable();
            foreach (var elem in columns) {
                _table.AddColumn(elem);
            }
        }

        protected override void CreatePdf(PdfInfo info) {
            _document = new Document();
            DefineStyles(_document);
            // Ссылка нп первую секцию
            _section = _document.AddSection();
        }

        protected override PdfDocument SavePdf(PdfInfo info) {
            var renderer = new PdfDocumentRenderer(true) {
                Document = _document,
            };
            renderer.RenderDocument();
            return renderer.PdfDocument;
        }
    }
}