using MigraDoc.DocumentObjectModel.Shapes;
using MigraDoc.DocumentObjectModel;
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;
using MigraDoc.DocumentObjectModel.Shapes.Charts;
using WinFormsLibrary1.Configs.Diagram;

namespace WinFormsLibrary1
{
	public partial class PdfWithDiagram : Component
	{
		public PdfWithDiagram()
		{
			InitializeComponent();
		}

		public PdfWithDiagram(IContainer container)
		{
			container.Add(this);

			InitializeComponent();
		}

		private Document _document;
		private Chart _chart;

		private Document Document
		{
			get
			{
				if (_document == null)
				{
					_document = new Document();
				}
				return _document;
			}
		}

		public void CreateHeader(string header)
		{
			var section = Document.AddSection();
			var paragraph = section.AddParagraph(header);
			paragraph.Format.Font.Color = Colors.Black;
			paragraph.Format.Font.Bold = true;
		}

		private void ConfigChart(PdfWithDiagramConfig config)
		{
			((Shape)_chart).Width = Unit.FromCentimeter(16.0);
			((Shape)_chart).Height = Unit.FromCentimeter(12.0);
			_chart.TopArea.AddParagraph(config.ChartTitle);
			_chart.XAxis.MajorTickMark = (TickMarkType)2;
			_chart.YAxis.MajorTickMark = (TickMarkType)2;
			_chart.YAxis.HasMajorGridlines = true;
			_chart.PlotArea.LineFormat.Width = new Unit(1);
			_chart.PlotArea.LineFormat.Visible = true;
			switch (config.LegendLocation)
			{
				case Location.Left:
					_chart.LeftArea.AddLegend();
					break;
				case Location.Right:
					_chart.RightArea.AddLegend();
					break;
				case Location.Top:
					_chart.TopArea.AddLegend();
					break;
				case Location.Bottom:
					_chart.BottomArea.AddLegend();
					break;
			}
		}

		public void CreatePieChart(PdfWithDiagramConfig config)
		{
			_chart = new Chart(ChartType.Pie2D);
			foreach (var kvp in config.Data)
			{
				Series series = _chart.SeriesCollection.AddSeries();
				series.Name = kvp.Key;
				series.Add(kvp.Value.Select(x => x.Value).ToArray()); // Используем Value для данных
			}
			_chart.XValues.AddXSeries().Add(config.Data.First().Value.Select(x => x.Name).ToArray()); // Используем Date для оси X
			ConfigChart(config);
		}

		public void SaveDoc(string filepath)
		{
			if (string.IsNullOrEmpty(filepath))
				throw new ArgumentNullException(nameof(filepath), "File path cannot be null or empty.");
			if (_document == null)
				throw new ArgumentNullException(nameof(_document), "Document is not created.");
			if (_chart != null)
				_document.LastSection.Add(_chart);
			PdfDocumentRenderer documentRenderer = new PdfDocumentRenderer(true)
			{
				Document = _document
			};
			documentRenderer.RenderDocument();
			documentRenderer.PdfDocument.Save(filepath);
		}

		public void CreateDoc(PdfWithDiagramConfig config)
		{
			config.CheckFields();
			CreateHeader(config.Header);
			CreatePieChart(config);
			SaveDoc(config.FilePath);
		}
	}
}