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

namespace DatenDB
{
  public class OLVKundenumsatz
  {
    private static List<OLVKundenumsatz> resultlist;
    public OLVKundenumsatz()
    {
    }

    [OLVColumn(DisplayIndex = 0, TextAlign = System.Windows.Forms.HorizontalAlignment.Center)]
    public string Zeitraum { get; set; }

    //[OLVColumn(DisplayIndex = 1, TextAlign = System.Windows.Forms.HorizontalAlignment.Center)]
    //public double Jahr { get; set; }

    [OLVColumn(DisplayIndex = 2, TextAlign = System.Windows.Forms.HorizontalAlignment.Right, AspectToStringFormat = "{0:C}")]
    public double Umsatz { get; set; }

    //[OLVColumn(DisplayIndex = 3, TextAlign = System.Windows.Forms.HorizontalAlignment.Right, AspectToStringFormat = "{0:C}")]
    //public double DifferenzEUR { get; set; }

    //[OLVColumn(DisplayIndex = 4, TextAlign = System.Windows.Forms.HorizontalAlignment.Center, AspectToStringFormat = "{0:P1}")]
    //public double DifferenzPro { get; set; }

    public static List<OLVKundenumsatz> GetJahresumsatz(int? kndid)
    {
      resultlist = new List<OLVKundenumsatz>();
      DatenbankConnection.GetConnection().Open();
      NpgsqlCommand command = new NpgsqlCommand();
      command.Connection = DatenbankConnection.GetConnection();
      command.CommandText = $"select jahr, umsatz from kundenverwaltung.jahresumsaetze where kunde_id = {kndid} order by jahr";
      NpgsqlDataReader reader = command.ExecuteReader();
      while (reader.Read()) resultlist.Add(new OLVKundenumsatz(reader, true));
      reader.Close();
      DatenbankConnection.GetConnection().Close();

      return resultlist;
    }

    public static List<OLVKundenumsatz> GetMonatsumsatz(int? kndid)
    {
      resultlist = new List<OLVKundenumsatz>();
      DatenbankConnection.GetConnection().Open();
      NpgsqlCommand command = new NpgsqlCommand();
      command.Connection = DatenbankConnection.GetConnection();
      command.CommandText = $"select monat, umsatz1, jahr from kundenverwaltung.monatsumsaetze where kunde_id = {kndid} order by jahr, monat";
      NpgsqlDataReader reader = command.ExecuteReader();
      while (reader.Read()) resultlist.Add(new OLVKundenumsatz(reader, false));
      reader.Close();
      DatenbankConnection.GetConnection().Close();


      return resultlist;
    }

    public static List<OLVKundenumsatz> GetQuartalsumsatz(int? kndid)
    {
      resultlist = new List<OLVKundenumsatz>();
      DatenbankConnection.GetConnection().Open();
      NpgsqlCommand command = new NpgsqlCommand();
      command.Connection = DatenbankConnection.GetConnection();
      command.CommandText = $"select quartal, umsatz, jahr from kundenverwaltung.q_umsatz where kunde_id = {kndid} order by jahr, quartal";
      NpgsqlDataReader reader = command.ExecuteReader();
      while (reader.Read()) resultlist.Add(new OLVKundenumsatz(reader, false));
      reader.Close();
      DatenbankConnection.GetConnection().Close();

      return resultlist;
    }

    public OLVKundenumsatz(NpgsqlDataReader reader, bool jahr)
    {
      if (jahr)
      {
        this.Zeitraum = reader.GetDouble(0).ToString();
        this.Umsatz = reader.GetDouble(1);
      }
      else
      {
        this.Zeitraum = reader.GetDouble(0).ToString() + "." + reader.GetDouble(2).ToString();
        this.Umsatz = reader.GetDouble(1);
      }
      
    }
  }
}