using AircraftPlantBusinessLogic.OfficePackage.HelperEnums;
using AircraftPlantBusinessLogic.OfficePackage.HelperModels;
using DocumentFormat.OpenXml;
using DocumentFormat.OpenXml.Packaging;
using DocumentFormat.OpenXml.Wordprocessing;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Threading.Tasks;

namespace AircraftPlantBusinessLogic.OfficePackage.Implements
{
    /// <summary>
    /// Реализация абстрактного класса для сохранения Word-файла
    /// </summary>
    public class SaveToWord : AbstractSaveToWord
    {
        /// <summary>
        /// Документ
        /// </summary>
        private WordprocessingDocument? _wordDocument;

        /// <summary>
        /// Тело документа
        /// </summary>
        private Body? _docBody;

        /// <summary>
        /// Таблица
        /// </summary>
        private Table? _table;

        /// <summary>
        /// Получение типа выравнивания текста
        /// </summary>
        /// <param name="type"></param>
        /// <returns></returns>
        private static JustificationValues GetJustificationValues(WordJustificationType type)
        {
            return type switch
            {
                WordJustificationType.Both => JustificationValues.Both,
                WordJustificationType.Center => JustificationValues.Center,
                _ => JustificationValues.Left,
            };
        }

        /// <summary>
        /// Настройки станицы
        /// </summary>
        /// <returns></returns>
        private static SectionProperties CreateSectionProperties()
        {
            var properties = new SectionProperties();

            var pageSize = new PageSize
            {
                Orient = PageOrientationValues.Portrait
            };

            properties.AppendChild(pageSize);

            return properties;
        }

        /// <summary>
        /// Задание форматирования для абзаца
        /// </summary>
        /// <param name="paragraphProperties"></param>
        /// <returns></returns>
        private static ParagraphProperties? CreateParagraphProperties(WordTextProperties? paragraphProperties)
        {
            if (paragraphProperties == null)
            {
                return null;
            }

            var properties = new ParagraphProperties();

            properties.AppendChild(new Justification()
            {
                Val = GetJustificationValues(paragraphProperties.JustificationType)
            });

            properties.AppendChild(new SpacingBetweenLines
            {
                LineRule = LineSpacingRuleValues.Auto
            });

            properties.AppendChild(new Indentation());

            var paragraphMarkRunProperties = new ParagraphMarkRunProperties();
            if (!string.IsNullOrEmpty(paragraphProperties.Size))
            {
                paragraphMarkRunProperties.AppendChild(new FontSize { Val = paragraphProperties.Size });
            }
            properties.AppendChild(paragraphMarkRunProperties);

            return properties;
        }

        /// <summary>
        /// Создание doc-файла
        /// </summary>
        /// <param name="info"></param>
        protected override void CreateWord(WordInfo info)
        {
            _wordDocument = WordprocessingDocument.Create(info.FileName, WordprocessingDocumentType.Document);
            MainDocumentPart mainPart = _wordDocument.AddMainDocumentPart();
            mainPart.Document = new Document();
            _docBody = mainPart.Document.AppendChild(new Body());
        }

        /// <summary>
        /// Создание абзаца с текстом
        /// </summary>
        /// <param name="paragraph"></param>
        protected override void CreateParagraph(WordParagraph paragraph)
        {
            if (_docBody == null || paragraph == null)
            {
                return;
            }
            var docParagraph = new Paragraph();

            docParagraph.AppendChild(CreateParagraphProperties(paragraph.TextProperties));

            foreach (var run in paragraph.Texts)
            {
                var docRun = new Run();

                var properties = new RunProperties();
                properties.AppendChild(new FontSize { Val = run.Item2.Size });
                if (run.Item2.Bold)
                {
                    properties.AppendChild(new Bold());
                }
                docRun.AppendChild(properties);

                docRun.AppendChild(new Text { Text = run.Item1, Space = SpaceProcessingModeValues.Preserve });

                docParagraph.AppendChild(docRun);
            }

            _docBody.AppendChild(docParagraph);
        }

        /// <summary>
        /// Создание таблицы
        /// </summary>
        /// <param name="columns"></param>
        protected override void CreateTable(List<string> columns)
        {
            if (_docBody == null)
            {
                return;
            }

            _table = new Table();

            var tableProperties = new TableProperties();
            tableProperties.AppendChild(new TableLayout { Type = TableLayoutValues.Fixed });
            tableProperties.AppendChild(new TableBorders(
                    new TopBorder() { Val = new EnumValue<BorderValues>(BorderValues.Single), Size = 4 },
                    new LeftBorder() { Val = new EnumValue<BorderValues>(BorderValues.Single), Size = 4 },
                    new RightBorder() { Val = new EnumValue<BorderValues>(BorderValues.Single), Size = 4 },
                    new BottomBorder() { Val = new EnumValue<BorderValues>(BorderValues.Single), Size = 4 },
                    new InsideHorizontalBorder() { Val = new EnumValue<BorderValues>(BorderValues.Single), Size = 4 },
                    new InsideVerticalBorder() { Val = new EnumValue<BorderValues>(BorderValues.Single), Size = 4 }
                ));
            tableProperties.AppendChild(new TableWidth { Type = TableWidthUnitValues.Auto });
            _table.AppendChild(tableProperties);

            TableGrid tableGrid = new TableGrid();
            foreach (var column in columns)
            {
                tableGrid.AppendChild(new GridColumn() { Width = column });
            }
            _table.AppendChild(tableGrid);

            _docBody.AppendChild(_table);
        }

        /// <summary>
        /// Создание строки
        /// </summary>
        /// <param name="row"></param>
        protected override void CreateRow(WordRow row)
        {
            if (_docBody == null || _table == null)
            {
                return;
            }

            TableRow docRow = new TableRow();
            foreach (var column in row.Texts)
            {
                var docParagraph = new Paragraph();
                WordParagraph paragraph = new WordParagraph
                {
                    Texts = new List<(string, WordTextProperties)> { (column, row.TextProperties) },
                    TextProperties = row.TextProperties
                };

                docParagraph.AppendChild(CreateParagraphProperties(paragraph.TextProperties));

                foreach (var run in paragraph.Texts)
                {
                    var docRun = new Run();

                    var properties = new RunProperties();
                    properties.AppendChild(new FontSize { Val = run.Item2.Size });
                    if (run.Item2.Bold)
                    {
                        properties.AppendChild(new Bold());
                    }
                    docRun.AppendChild(properties);

                    docRun.AppendChild(new Text { Text = run.Item1, Space = SpaceProcessingModeValues.Preserve });

                    docParagraph.AppendChild(docRun);
                }

                TableCell docCell = new TableCell();
                docCell.AppendChild(docParagraph);
                docRow.AppendChild(docCell);
            }

            _table.AppendChild(docRow);
        }

        /// <summary>
        /// Сохранение файла
        /// </summary>
        /// <param name="info"></param>
        protected override void SaveWord(WordInfo info)
        {
            if (_docBody == null || _wordDocument == null)
            {
                return;
            }
            _docBody.AppendChild(CreateSectionProperties());

            _wordDocument.MainDocumentPart!.Document.Save();
            _wordDocument.Dispose();
        }
    }
}