using DatenDB;
using Deckungsbeitrag.AA_Klassen;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Configuration;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Deckungsbeitrag.UserControls
{
  public partial class UCTourenplan : UserControl
  {
    private static string savePath = ConfigurationManager.AppSettings["DateiSavePfad"];
    private Benutzer benutzer;
    private string[] touren;
    public (DateTime datum, string text, string[] touren) lieferDaten;

    public UCTourenplan()
    {
      InitializeComponent();
    }

    public UCTourenplan(Benutzer benutzer) : this()
    {
      this.benutzer = benutzer;
    }

    private void UCTourenplan_Load(object sender, EventArgs e)
    {

      ReadCSV();

    }

    /// <summary>
    /// Bereitgestellten Tourenplan in .CSV lesen und den Controls des TableLayoutPanels zuordnen
    /// </summary>
    private void ReadCSV()
    {
      string updatePath = Path.Combine(savePath, "Listen");
      string dateiName = "Tourenplan_Aktuell.csv";
      string row;
      string[] rows;
      

      try
      {
        if (File.Exists(Path.Combine(updatePath, dateiName)))
        {
          string filename = Path.Combine(updatePath, dateiName);
          StreamReader sr = new StreamReader(filename, Encoding.GetEncoding("iso-8859-1"));
          row = string.Empty;
          rows = new string[0];
          int idx = 0;

          while (!sr.EndOfStream)
          {
            Array.Resize<string>(ref rows, ++idx);
            row = sr.ReadLine();
            rows[idx - 1] = row;
          }
          sr.Close();

          int i = 0;
          touren = new string[rows.Length - 2];
          foreach (string line in rows)
          {
            if (i == 0) { i++; continue; }
            string[] linedata = line.Split(';');
            for (int j = 0; j < this.tableLPTourenplan.ColumnCount; j++)
            {
              var control = this.tableLPTourenplan.GetControlFromPosition(j, i - 1);
              control.Text = linedata[j].Replace(",", "\n\n");
              if (i >= 2 & j == 0) touren[i - 2] = linedata[0];
            }
            i++;
          }
          this.tableLPTourenplan = RemoveTLPanelRow(i - 1, tableLPTourenplan);
        }
      }
      catch (Exception)
      {
        throw;
      }
    }

    /// <summary>
    /// Nicht benötigte Zeilen des TableLayoutPanels entfernen.
    /// </summary>
    /// <param name="lines"></param>
    /// <param name="tlp"></param>
    /// <returns>TableLayoutPanel ohne nicht benutzten Zeilen</returns>
    private TableLayoutPanel RemoveTLPanelRow(int lines, TableLayoutPanel tlp)
    {
      for (int i = lines; i <= tlp.RowCount; i++)
      {
        for (int col = 0; col < tlp.ColumnCount; col++)
        {
          var ctl = tlp.GetControlFromPosition(col, i);
          if (ctl != null)
            tlp.Controls.Remove(ctl);
        }
      }

      while (tlp.RowCount > lines)
      {
        tlp.RowStyles.RemoveAt(tlp.RowCount - 1);
        tlp.RowCount--;
      }
      return tlp;
    }

    private void Button_Click(object sender, EventArgs e)
    {
      var btn = (Button)sender;
      var tlp = (TableLayoutPanel)btn.Parent;
      TableLayoutPanelCellPosition tlpCellPosition = tlp.GetCellPosition(btn);
      int row = tlpCellPosition.Row;
      int col = tlpCellPosition.Column;

      DateTime liefertag = Funktionen.GetNextLiefertag((Liefertage)(1 << col));
      string tour = touren[row - 1];
      lieferDaten = (liefertag, tour, touren);

      this.ParentForm?.Close();
    }
  }
}