using OfficeOpenXml.Style;
using OfficeOpenXml;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using LicenseContext = OfficeOpenXml.LicenseContext;
using OfficeOpenXml.Drawing.Chart;

namespace UnvisableComponents
{
    public partial class ExcelChart : Component
    {
        public ExcelChart()
        {
            InitializeComponent();
        }

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

            InitializeComponent();
        }
        public void Load(ChartInfo info) 
        {
            ExcelPackage.LicenseContext = LicenseContext.NonCommercial;
            Check(info);
            List<string> fields = new List<string>();
            using (ExcelPackage excelPackage = new ExcelPackage())
            {
                excelPackage.Workbook.Properties.Author = "Qawithexperts";
                excelPackage.Workbook.Properties.Title = "test Excel";
                excelPackage.Workbook.Properties.Subject = "Write in Excel";
                excelPackage.Workbook.Properties.Created = DateTime.Now;

                ExcelWorksheet worksheet = excelPackage.Workbook.Worksheets.Add("Sheet 1");
                worksheet.Cells["A1"].Value = info.Title;
                int posString = 2;
                int endColumn = 1;
                int startColumn = 1;
                foreach(var step in info.Dates)
                {
                    worksheet.Cells[posString,endColumn].Value = step.Item1;
                    worksheet.Cells[posString+1, endColumn].Value = step.Item2;
                    endColumn++;
                }
                ExcelPieChart pieChart = worksheet.Drawings.AddChart("pieChart", eChartType.Pie3D) as ExcelPieChart;
                pieChart.Title.Text = info.DiagrammTitle;
                pieChart.Series.Add(ExcelRange.GetAddress(posString+1, startColumn, posString + 1, endColumn-1), ExcelRange.GetAddress(posString, startColumn, posString, endColumn-1));

                pieChart.Legend.Position = (eLegendPosition)(int)info.DirLegend;
                pieChart.DataLabel.ShowPercent = true;
                pieChart.SetPosition(1, 0, 0, 0);
                FileInfo fi = new FileInfo(info.Path);
                excelPackage.SaveAs(fi);
            }
        }
        public void Check(ChartInfo info)
        {
            if (string.IsNullOrEmpty(info.Title))
                throw new Exception("Забыли заглавие");
            if (string.IsNullOrEmpty(info.Path))
                throw new Exception("Забыли путь");
            if (!info.Path.EndsWith(".xlsx"))
                info.Path += ".xlsx";
            if (info.Dates.Count == 0)
                throw new Exception("забыли данные");
            

        }
    }
}