using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace PEP_Tool
{
    public static class Export
    {/*System.Windows.Controls.DataGrid*/
        public static void ExportCSV(System.Data.DataView list)
        {
            var l = list.ToTable();
            string[] arr = new string[l.Rows.Count];
            StringBuilder sb = new StringBuilder();

            MainWindow.main.BarIsIndeterminate = false;
            MainWindow.main.BarVisibility = System.Windows.Visibility.Visible;
            MainWindow.main.BarMax = l.Rows.Count;

            sb.AppendLine($"Name;Vorname;Datum;Abteilung;Zuweisung;Bemerkung;" + Environment.NewLine);

            int count = 0;
            foreach (System.Data.DataRow user in l.Rows)
            {
                count++;
                sb.AppendLine($"{user.ItemArray[1]};{user.ItemArray[2]};{user.ItemArray[4].ToString().Split(' ')[0]};{user.ItemArray[3]};{user.ItemArray[9]};{user.ItemArray[10]};");
                MainWindow.main.BarValue = count;
            }

            //StringBuilder sb = new StringBuilder();

            //IEnumerable<string> columnNames = l.Columns.Cast<System.Data.DataColumn>().
            //                                  Select(column => column.ColumnName);
            //sb.AppendLine(string.Join(",", columnNames));

            //foreach (System.Data.DataRow row in l.Rows)
            //{
            //    IEnumerable<string> fields = row.ItemArray.Select(field => field.ToString());
            //    sb.AppendLine(string.Join(",", fields));
            //}

            //object[,] data = list.PrepareData();
            //StringBuilder builder = new StringBuilder(Convert.ToString((char)65279));

            //for (int k = 0; k < data.GetLength(0); k++)
            //{
            //    List<string> tempList = new List<string>();
            //    for (int l = 0; l < data.GetLength(1); l++)
            //        tempList.Add(data[k, l].ToString());
            //    builder.Append(string.Join(",", tempList)).Append(Environment.NewLine);
            //}

            MainWindow.main.BarIsIndeterminate = true;
            MainWindow.main.BarVisibility = System.Windows.Visibility.Collapsed;


            Microsoft.Win32.SaveFileDialog dialog = new Microsoft.Win32.SaveFileDialog();
            dialog.AddExtension = true;
            dialog.DefaultExt = "csv";
            dialog.Filter = "Excel Arbeitsblatt CSV|*.csv";
            dialog.OverwritePrompt = true;
            dialog.RestoreDirectory = true;
            dialog.Title = "Liste exportieren";

            dialog.ShowDialog();


            if (dialog.FileName != "")
                System.IO.File.WriteAllText(dialog.FileName, sb.ToString(), Encoding.UTF8);
        }


    }
}