using ComponentProgramming.NonVisualComponents.HelperModels;
using MigraDoc.DocumentObjectModel;
using MigraDoc.DocumentObjectModel.Shapes.Charts;
using MigraDoc.Rendering;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ComponentProgramming.NonVisualComponents
{
    public partial class PdfPieChart : Component
    {
        public PdfPieChart()
        {
            InitializeComponent();
        }

        public PdfPieChart(IContainer container)
        {
            //container.Add(this);

            InitializeComponent();
        }

        public bool CreatePieChart(DataForPieChart dataForPDFPie)
        {
            // проверки
            if (string.IsNullOrEmpty(dataForPDFPie.FilePath) || string.IsNullOrEmpty(dataForPDFPie.DocumentTitle) || string.IsNullOrEmpty(dataForPDFPie.ChartTitle)
                || string.IsNullOrEmpty(dataForPDFPie.LegendName)
                || dataForPDFPie.Items.Count == 0) throw new ArgumentException("Недостаточно данных");

            Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);

            Document _document = new Document();
            var section = _document.AddSection();
            var paragraph = section.AddParagraph(dataForPDFPie.DocumentTitle);
            paragraph.Format.Alignment = ParagraphAlignment.Center;
            paragraph.Format.SpaceAfter = "2cm";

            Chart chart = section.AddChart(ChartType.Pie2D);
            chart.Width = Unit.FromCentimeter(16);
            chart.Height = Unit.FromCentimeter(12);
            chart.HeaderArea.AddParagraph(dataForPDFPie.ChartTitle); // заголовок диаграммы

            Series series = chart.SeriesCollection.AddSeries();
            series.Name = dataForPDFPie.LegendName; // название сериии
            XSeries xseries = chart.XValues.AddXSeries();

            foreach ((double, string) el in dataForPDFPie.Items) // заполнение серии
            {
                series.Add(el.Item1);
                xseries.Add(el.Item2);
            }

            switch (dataForPDFPie.diagLegend) // позиция легенды
            {
                case DiagramLegendEnum.Top:
                    chart.TopArea.AddLegend();
                    break;
                case DiagramLegendEnum.Bottom:
                    chart.BottomArea.AddLegend();
                    break;
                case DiagramLegendEnum.Right:
                    chart.RightArea.AddLegend();
                    break;
                case DiagramLegendEnum.Left:
                    chart.LeftArea.AddLegend();
                    break;
            }

            chart.DataLabel.Type = DataLabelType.Percent;
            chart.DataLabel.Position = DataLabelPosition.OutsideEnd;

            PdfDocumentRenderer renderer = new PdfDocumentRenderer(true);
            renderer.Document = _document;
            renderer.RenderDocument();
            renderer.PdfDocument.Save(dataForPDFPie.FilePath);

            return true;
        }
    }
}