using MigraDoc.DocumentObjectModel;
using MigraDoc.DocumentObjectModel.Tables;
using MigraDoc.Rendering;
using Components.SaveToPdfHelpers;
using System.Text;
using System.Security.Cryptography;
using MigraDoc.DocumentObjectModel.Shapes.Charts;
using Components.Nonvisual;
using System.IO;

namespace Components
{
    internal class SaveToPdf
    {
        private Document? _document;
        private Section? _section;
        private Table? _table;
        public void CreateTableDocumentWithContext(string title, string path, List<string[][]> tables)
        {
            _document = new Document();
            Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
            DefineStyles(_document);
            _section = _document.AddSection();

            CreateParagraph(new PdfParagraph
            {
                Text = title,
                Style = "NormalTitle",
                ParagraphAlignment = PdfParagraphAlignmentType.Left
            });

            foreach (var table in tables)
            {
                if (table.Length == 0) continue;

                CreateTable(Enumerable.Repeat("3cm", table[0].Length).ToList());

                foreach (var row in table)
                {
                    CreateRow(new PdfRowParameters
                    {
                        Texts = row.ToList(),
                        Style = "Normal",
                        ParagraphAlignment = PdfParagraphAlignmentType.Left
                    });
                }

                CreateParagraph(new PdfParagraph());
            }

            var renderer = new PdfDocumentRenderer(true)
            {
                Document = _document
            };
            renderer.RenderDocument();
            renderer.PdfDocument.Save(path);
        }

        public void CreateConfigurableTableDocument<T>(string path, string title,
            List<(double width, string header, string propName)> columns, double headerRowHeight,
            double rowHeight, List<T> data)
        {
            _document = new Document();
            Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
            DefineStyles(_document);
            _section = _document.AddSection();

            CreateParagraph(new PdfParagraph
            {
                Text = title,
                Style = "NormalTitle",
                ParagraphAlignment = PdfParagraphAlignmentType.Left
            });

            CreateTable(columns.Select(c => c.width).ToList());

            CreateRow(new PdfRowParameters
            {
                Texts = columns.Select(c => c.header).ToList(),
                Style = "NormalTitle",
                ParagraphAlignment = PdfParagraphAlignmentType.Center,
                RowHeight = headerRowHeight,
            });

            foreach (var obj in data)
            {
                List<string> cells = new List<string>();

                for (int i = 0; i < columns.Count; i++)
                {
                    var propName = columns[i].propName;
                    var prop = typeof(T).GetProperty(propName);
                    if (prop is null)
                    {
                        throw new ArgumentException($"Failed to find property {prop} in provided objects class");
                    }
                    var propVal = prop.GetValue(obj)?.ToString();
                    if (propVal is not null)
                    {
                        cells.Add(propVal);
                    }
                }

                CreateRow(new PdfRowParameters
                {
                    Texts = cells,
                    Style = "Normal",
                    ParagraphAlignment = PdfParagraphAlignmentType.Left,
                    FirstCellStyle = "NormalTitle",
                    FirstCellParagraphAlignment = PdfParagraphAlignmentType.Center,
                    RowHeight = rowHeight,
                });
            }

            CreateParagraph(new PdfParagraph());

            var renderer = new PdfDocumentRenderer(true)
            {
                Document = _document
            };
            renderer.RenderDocument();
            renderer.PdfDocument.Save(path);
        }

        public void CreateHist(string filePath, string title, string histTitle,
            LegendAlignment alignment, Dictionary<string, int[]> data)
        {
            _document = new Document();
            Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
            DefineStyles(_document);
            _section = _document.AddSection();

            CreateParagraph(new PdfParagraph
            {
                Text = title,
                Style = "NormalTitle",
                ParagraphAlignment = PdfParagraphAlignmentType.Left
            });

            CreateChart(new PdfChartParameters
            {
                Data = data,
                Title = histTitle,
                LegendAlignment = alignment,
            });

            var renderer = new PdfDocumentRenderer(true)
            {
                Document = _document
            };
            renderer.RenderDocument();
            renderer.PdfDocument.Save(filePath);
        }
        private static ParagraphAlignment GetParagraphAlignment(PdfParagraphAlignmentType type)
        {
            return type switch
            {
                PdfParagraphAlignmentType.Center => ParagraphAlignment.Center,
                PdfParagraphAlignmentType.Left => ParagraphAlignment.Left,
                PdfParagraphAlignmentType.Right => ParagraphAlignment.Right,
                _ => ParagraphAlignment.Justify,
            };
        }
        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 void CreateParagraph(PdfParagraph pdfParagraph)
        {
            if (_section == null)
            {
                return;
            }
            var paragraph = _section.AddParagraph(pdfParagraph.Text);
            paragraph.Format.SpaceAfter = "1cm";
            paragraph.Format.Alignment = GetParagraphAlignment(pdfParagraph.ParagraphAlignment);
            paragraph.Style = pdfParagraph.Style;
        }
        protected void CreateTable(List<string> columns)
        {
            if (_document == null)
            {
                return;
            }
            _table = _document.LastSection.AddTable();
            foreach (var elem in columns)
            {
                _table.AddColumn(elem);
            }
        }

        protected void CreateTable(List<double> columnWidths)
        {
            if (_document == null)
            {
                return;
            }
            _table = _document.LastSection.AddTable();
            foreach (var elem in columnWidths)
            {
                _table.AddColumn(Unit.FromCentimeter(elem));
            }
        }
        protected 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 = Unit.FromCentimeter((double)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].VerticalAlignment = VerticalAlignment.Center;
            }
        }

        protected void CreateChart(PdfChartParameters chartParams)
        {
            if (_section == null)
                return;

            Chart chart = new Chart(ChartType.Bar2D);
            chart.Width = "15cm";
            chart.Height = "8cm";

            foreach (var dataSeries in chartParams.Data)
            {
                Series series = chart.SeriesCollection.AddSeries();
                series.Name = dataSeries.Key;
                series.Add(dataSeries.Value.Select(x => (double)x).ToArray());
            }

            chart.TopArea.AddParagraph(chartParams.Title);

            chart.XAxis.MajorTickMark = TickMarkType.Outside;
            chart.YAxis.MajorTickMark = TickMarkType.Outside;
            chart.YAxis.HasMajorGridlines = true;

            _ = chartParams.LegendAlignment switch
            {
                LegendAlignment.Top => chart.TopArea.AddLegend(),
                LegendAlignment.Right => chart.RightArea.AddLegend(),
                LegendAlignment.Bottom => chart.BottomArea.AddLegend(),
                LegendAlignment.Left => chart.LeftArea.AddLegend(),
                _ => chart.BottomArea.AddLegend(),
            };

            chart.PlotArea.LineFormat.Width = 1;
            chart.PlotArea.LineFormat.Visible = true;

            _section.Add(chart);
        }
    }
}