using BrightIdeasSoftware;
using Npgsql;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Runtime.Remoting.Metadata.W3cXsd2001;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace DatenDB
{
	public class Kunde
	{
		//																	0				1				  2			 3			4				5		   6				 7			 8		 9				10						11						12			13			14						15			16				17						18
		public const string COLUMNS = "kunde_id, tour_id, kunde_nr, name1, name2, straße, plz, bezeichnung, land, aktiv, bettenanzahl, kunde_gruppe, service, region, waescheart, suchtext, aufgabe, anmerkung, aufgabe_count";
		private const string RED_COLUMNS = "kunde_id, tour_id, kunde_nr, name1, name2, straße, plz, bezeichnung, land, aktiv, bettenanzahl, kunde_gruppe, service, region, waescheart, jahr, umsatz";
    public const string TABLE = "kundenverwaltung.kunde";
		public const string VIEW = "kundenverwaltung.jahresumsaetze"; //RICHTIGE VIEW AUSSUCHEN FÜR INAKTIVE MIT LETZTEN UMSATZ...
		public Umsatz umsatz;
		public Kunde()
		{
		} // LEER
		public static List<Kunde> GetTmpList(string text)
		{
			bool endsWithSpecial = !char.IsLetterOrDigit(text[text.Length-1]);
			DatenbankConnection.GetConnection().Open();
			List<Kunde> resultList = new List<Kunde>();
			using (NpgsqlCommand command = new NpgsqlCommand())
			{
				command.Connection = DatenbankConnection.GetConnection();
				if (string.IsNullOrEmpty(text)) command.CommandText = $"select {COLUMNS} from {TABLE} where aktiv = {true}";
				else
				{
					if (!endsWithSpecial)
					{
            if (int.TryParse(text, out _)) command.CommandText = $"select {COLUMNS} from {TABLE} where kunde_nr::varchar ~* '{text}'";
            else command.CommandText = $"select {COLUMNS} from {TABLE} where suchtext ~* '{text}' or name1 ~* '{text}'";
          }
          else if (int.TryParse(text, out _)) command.CommandText = $"select {COLUMNS} from {TABLE} where kunde_nr::varchar ~* '{text.Substring(0, 6)}'";
					//TODO: Testen ob SWS-QRCodes gelesen werden können. Nur notwendig bis alle SWS-QRCodes richtig gedruckt und gelesen werden.
        }

				NpgsqlDataReader reader = command.ExecuteReader();
				while (reader.Read()) resultList.Add(new Kunde(reader));
				reader.Close();
			}

			DatenbankConnection.GetConnection().Close();
			return resultList;

		}
		public static int GetKundeID(string kndnr, string text)
		{
			DatenbankConnection.GetConnection().Open();
			int result = 0;
			using (NpgsqlCommand command = new NpgsqlCommand())
			{
				command.Connection = DatenbankConnection.GetConnection();
				if (!string.IsNullOrEmpty(kndnr)) command.CommandText = $"select kunde_id from {TABLE} where kunde_nr = '{kndnr}'";
				else command.CommandText = $"select kunde_id from {TABLE} where suchtext = '{text}'";
				NpgsqlDataReader reader = command.ExecuteReader();
				while (reader.Read()) result = reader.GetInt32(0);
				reader.Close();
			}

			DatenbankConnection.GetConnection().Close();
			return result;
		}
    public static List<string> GetServiceDistinct()
    {
      DatenbankConnection.GetConnection().Open();
      List<string> resultList = new List<string>();
      NpgsqlCommand command = new NpgsqlCommand();
      command.Connection = DatenbankConnection.GetConnection();
      command.CommandText = $"SELECT distinct service FROM {TABLE} where service is not null";
      NpgsqlDataReader reader = command.ExecuteReader();
      while (reader.Read()) resultList.Add(reader.GetString(0));
      reader.Close();
      DatenbankConnection.GetConnection().Close();

      return resultList;
    }

		public static List<Kunde> GetList(bool? isaktiv, string text)
		{
			DatenbankConnection.GetConnection().Open();
			List<Kunde> resultList = new List<Kunde>();
			using (NpgsqlCommand command = new NpgsqlCommand())
			{
				command.Connection = DatenbankConnection.GetConnection();
				if (isaktiv != null) command.CommandText = $"select {COLUMNS} from {TABLE} where aktiv = {isaktiv}";
				if (!string.IsNullOrWhiteSpace(text))command.CommandText = $"select {COLUMNS} from {TABLE} where suchtext ~* '{text}'";
				NpgsqlDataReader reader = command.ExecuteReader();
				while (reader.Read()) resultList.Add(new Kunde(reader, false));
				reader.Close();
			}
			DatenbankConnection.GetConnection().Close();

			foreach(Kunde kunde in resultList)
			{
				List<OLVKundenumsatz> list = new List<OLVKundenumsatz>();
				list = OLVKundenumsatz.GetJahresumsatz(kunde.KundeID);
				if(list.Count > 0)
				{
          kunde.Zeitraum = double.Parse(OLVKundenumsatz.GetJahresumsatz(kunde.KundeID).Last().Zeitraum);
          kunde.Umsatz1 = OLVKundenumsatz.GetJahresumsatz(kunde.KundeID).Last().Umsatz;
        }
				else
				{
					kunde.Zeitraum = 0;
					kunde.Umsatz1 = 0;
        }
        
      }

			return resultList;
		}	//INAKTIV KUNDENLISTE LADEN...
		public static int GetBettenAnzahl(string bett)
		{
			DatenbankConnection.GetConnection().Open();
			int betten = 0;
			using (NpgsqlCommand command = new NpgsqlCommand())
			{
				command.Connection = DatenbankConnection.GetConnection();

				if (bett == "Miete") command.CommandText = $"select sum(bettenanzahl) from {TABLE} where aktiv = {true} and waescheart = '{bett}'";
				else command.CommandText = $"select sum(bettenanzahl) from {TABLE} where aktiv = {true}";

				NpgsqlDataReader reader = command.ExecuteReader();
				while (reader.Read()) betten = reader.IsDBNull(0) ? 0 : reader.GetInt16(0);
				reader.Close();
			}

			DatenbankConnection.GetConnection().Close();
			return betten;
		}
		public static Kunde GetKunde(string nr, int? id, string name)
		{
			DatenbankConnection.GetConnection().Open();
			Kunde kunde = null;
			using (NpgsqlCommand command = new NpgsqlCommand())
			{
				command.Connection = DatenbankConnection.GetConnection();
				if(nr != null)
				{
          if (int.TryParse(nr, out int _))
          {
            command.CommandText = $"select {COLUMNS} from {TABLE} where kunde_nr = '{nr}'";
          }
          else command.CommandText = $"select {COLUMNS} from {TABLE} where suchtext = '{nr}'";
        }
        if (id != null) command.CommandText = $"select {COLUMNS} from {TABLE} where kunde_id = {id}";
				if (!string.IsNullOrEmpty(name))
				{
					command.CommandText = $"select {COLUMNS} from {TABLE} where LOWER(name1) = '{name}'";
				}
				NpgsqlDataReader reader = command.ExecuteReader();
				while (reader.Read()) kunde = new Kunde(reader);
				reader.Close();
			}
			DatenbankConnection.GetConnection().Close();

			return kunde;
		}

		public Kunde(NpgsqlDataReader reader, bool mitUmsatz)
		{
			if (!mitUmsatz)
			{
        this.KundeID = reader.GetInt32(0);
        this.TourID = reader.IsDBNull(1) ? null : (int?)reader.GetInt32(1);
        this.KundeNummer = reader.GetString(2);
        this.KundeName = reader.IsDBNull(3) ? string.Empty : reader.GetString(3);
        this.KundeName2 = reader.IsDBNull(4) ? string.Empty : reader.GetString(4);
        this.Strasse = reader.IsDBNull(5) ? string.Empty : reader.GetString(5);
        this.PLZ = reader.IsDBNull(6) ? null : (int?)reader.GetInt32(6);
        this.Ort = reader.IsDBNull(7) ? string.Empty : reader.GetString(7);
        this.Land = reader.IsDBNull(8) ? string.Empty : reader.GetString(8);
        this.Aktiv = reader.GetBoolean(9);
        this.Bettenanzahl = reader.IsDBNull(10) ? null : (int?)reader.GetInt32(10);
        this.KundeGruppe = reader.IsDBNull(11) ? string.Empty : reader.GetString(11);
        this.Service = reader.IsDBNull(12) ? string.Empty : reader.GetString(12);
        this.Region = reader.IsDBNull(13) ? string.Empty : reader.GetString(13);
        this.Waescheart = reader.IsDBNull(14) ? string.Empty : reader.GetString(14);
				this.Suchtext = reader.IsDBNull(15) ? string.Empty : reader.GetString(15);
				this.Aufgabe = reader.IsDBNull(16) ? null : (int?)reader.GetInt32(16);
				this.Anmerkung = reader.IsDBNull(17) ? string.Empty : reader.GetString(17);
        this.AufgabeCount = reader.IsDBNull(18) ? 0 : reader.GetInt32(18);

      }
    }
		public Kunde(NpgsqlDataReader reader)
		{
			this.KundeID = reader.GetInt32(0);
			this.TourID = reader.IsDBNull(1) ? null : (int?)reader.GetInt32(1);
			this.KundeNummer = reader.GetString(2);
			this.KundeName = reader.IsDBNull(3) ? string.Empty : reader.GetString(3);
			this.KundeName2 = reader.IsDBNull(4) ? string.Empty : reader.GetString(4);
			this.Strasse = reader.IsDBNull(5) ? string.Empty : reader.GetString(5);
			this.PLZ = reader.IsDBNull(6) ? null : (int?)reader.GetInt32(6);
			this.Ort = reader.IsDBNull(7) ? string.Empty : reader.GetString(7);
			this.Land = reader.IsDBNull(8) ? string.Empty : reader.GetString(8);
			this.Aktiv = reader.GetBoolean(9);
			this.Bettenanzahl = reader.IsDBNull(10) ? null : (int?)reader.GetInt32(10);
			this.KundeGruppe = reader.IsDBNull(11) ? string.Empty : reader.GetString(11);
			this.Service = reader.IsDBNull(12) ? string.Empty : reader.GetString(12);
			this.Region = reader.IsDBNull(13) ? string.Empty : reader.GetString(13);
			this.Waescheart = reader.IsDBNull(14) ? string.Empty : reader.GetString(14);
      this.Suchtext = reader.IsDBNull(15) ? string.Empty : reader.GetString(15);
			this.Aufgabe = reader.IsDBNull(16) ? null : (int?)reader.GetInt32(16);
      this.Anmerkung = reader.IsDBNull(17) ? string.Empty : reader.GetString(17);
			this.AufgabeCount = reader.IsDBNull(18) ? 0 : reader.GetInt32(18);
    }
    public int Save()
		{
			DatenbankConnection.GetConnection().Open();

			using (NpgsqlCommand command = new NpgsqlCommand())
			{
				command.Connection = DatenbankConnection.GetConnection();

				if (this.KundeID.HasValue & this.KundeID != 0)
				{
					command.CommandText = $"update {TABLE} set tour_id = :p1, kunde_nr = :p2, name1 = :p3, name2 = :p4, straße = :p5, plz = :p6, bezeichnung = :p7, land = :p8, aktiv = :p9, bettenanzahl = :p10, kunde_gruppe = :p11, service = :p12, region = :p13, waescheart = :p14, suchtext = :p15, aufgabe = :p16, anmerkung = :p17, aufgabe_count = :p18 WHERE kunde_id = :p0";
				}
				else
				{
					command.CommandText = "select nextval('kundenverwaltung.kunde_seq')";
					this.KundeID = (int)(long)command.ExecuteScalar();
					command.CommandText = $"insert into {TABLE} ({COLUMNS}) values (:p0, :p1, :p2, :p3, :p4, :p5, :p6, :p7, :p8, :p9, :p10, :p11, :p12, :p13, :p14, :p15, :p16, :p17, :p18)";
				}

				command.Parameters.AddWithValue("p0", this.KundeID);
				command.Parameters.AddWithValue("p1", this.TourID ?? (object)DBNull.Value);
				command.Parameters.AddWithValue("p2", this.KundeNummer);
				command.Parameters.AddWithValue("p3", string.IsNullOrEmpty(this.KundeName) ? (object)DBNull.Value : this.KundeName);
				command.Parameters.AddWithValue("p4", string.IsNullOrEmpty(this.KundeName2) ? (object)DBNull.Value : this.KundeName2);
				command.Parameters.AddWithValue("p5", string.IsNullOrEmpty(this.Strasse) ? (object)DBNull.Value : this.Strasse);
				command.Parameters.AddWithValue("p6", this.PLZ ?? (object)DBNull.Value);
				command.Parameters.AddWithValue("p7", string.IsNullOrEmpty(this.Ort) ? (object)DBNull.Value : this.Ort);
				command.Parameters.AddWithValue("p8", string.IsNullOrEmpty(this.Land) ? (object)DBNull.Value : this.Land);
				command.Parameters.AddWithValue("p9", this.Aktiv);
				command.Parameters.AddWithValue("p10", this.Bettenanzahl ?? (object)DBNull.Value);
				command.Parameters.AddWithValue("p11", string.IsNullOrEmpty(this.KundeGruppe) ? (object)DBNull.Value : this.KundeGruppe);
				command.Parameters.AddWithValue("p12", string.IsNullOrEmpty(this.Service) ? (object)DBNull.Value : this.Service);
				command.Parameters.AddWithValue("p13", string.IsNullOrEmpty(this.Region) ? (object)DBNull.Value : this.Region);
				command.Parameters.AddWithValue("p14", string.IsNullOrEmpty(this.Waescheart) ? (object)DBNull.Value : this.Waescheart);
				command.Parameters.AddWithValue("p15", string.IsNullOrEmpty(this.Suchtext) ? (object)DBNull.Value : this.Suchtext);
				command.Parameters.AddWithValue("p16", this.Aufgabe ?? (object)DBNull.Value);
				command.Parameters.AddWithValue("p17", string.IsNullOrWhiteSpace(this.Anmerkung) ? (object)DBNull.Value : this.Anmerkung);
				command.Parameters.AddWithValue("p18", this.AufgabeCount ?? (object)DBNull.Value);

				int result = command.ExecuteNonQuery();
				DatenbankConnection.GetConnection().Close();
				return result;
			}
		}
		public int CheckKndNr(string v)
		{
			DatenbankConnection.GetConnection().Open();
			using (NpgsqlCommand command = new NpgsqlCommand())
			{
				command.Connection = DatenbankConnection.GetConnection();
				command.CommandText = $"select kunde_id from {TABLE} where kunde_nr = '{v}'";

				int result = 0;
				NpgsqlDataReader reader = command.ExecuteReader();
				while (reader.Read()) result = reader.GetInt16(0);
				reader.Close();
				DatenbankConnection.GetConnection().Close();

				return result;
			}
		}
		public static int GetAnzahlKnd(bool? aktiv)
		{
			DatenbankConnection.GetConnection().Open();
			using (NpgsqlCommand command = new NpgsqlCommand())
			{
				command.Connection = DatenbankConnection.GetConnection();
				if (aktiv != null) command.CommandText = $"select count (*) from {TABLE} where aktiv = '{aktiv}'";
				else command.CommandText = $"select count (*) from {TABLE}";

				int result = (int)(long)command.ExecuteScalar();
				DatenbankConnection.GetConnection().Close();

				return result;
			}
		}

    #region Properties
    [OLVIgnore]
		public int? KundeID { get; set; }
		
		[OLVIgnore]
		public int? TourID { get; set; }

		[OLVColumn(IsVisible = false)]
		public string KundeGruppe { get; set; }

    [OLVColumn("KndNr.", DisplayIndex = 0, IsTileViewColumn = true, TextAlign = System.Windows.Forms.HorizontalAlignment.Center)]
    public string KundeNummer { get; set; }

    [OLVColumn("Name", DisplayIndex = 1)]
    public string KundeName { get; set; }

    [OLVColumn("Zusatz", DisplayIndex = 2)]
    public string KundeName2 { get; set; }

    [OLVColumn(DisplayIndex = 3)]
    public string Strasse { get; set; }

    [OLVColumn(DisplayIndex = 4)]
    public string HausNr { get; set; }

    [OLVColumn(DisplayIndex = 5, TextAlign = System.Windows.Forms.HorizontalAlignment.Center)]
    public int? PLZ { get; set; }

    [OLVColumn(DisplayIndex = 6)]
    public string Ort { get; set; }

    [OLVColumn(DisplayIndex = 7, TextAlign = System.Windows.Forms.HorizontalAlignment.Center)]
    public string Land { get; set; }

    [OLVColumn("Betten", DisplayIndex = 8, TextAlign = System.Windows.Forms.HorizontalAlignment.Center)]
    public int? Bettenanzahl { get; set; }

    [OLVColumn(CheckBoxes = true, DisplayIndex = 9)]
    public bool Aktiv { get; set; } = true;

    [OLVColumn(DisplayIndex = 10)]
    public string Service { get; set; }

    [OLVColumn(DisplayIndex = 11)]
    public string Region { get; set; }

    [OLVColumn(DisplayIndex = 12)]
    public string Waescheart { get; set; }

		[OLVColumn("Umsatz", DisplayIndex = 15, TextAlign = System.Windows.Forms.HorizontalAlignment.Center, AspectToStringFormat ="{0:C}")]
		public double? Umsatz1 { get; set; }
		[OLVIgnore]
		public double? Umsatz2 { get; set; }
		[OLVIgnore]
		public double? DifferenzEUR { get; set; }
    [OLVIgnore]
    public double? DifferenzP { get; set; }
    [OLVIgnore]
    public double? UmsatzAnteil { get; set; }
    [OLVIgnore]
    public double? KostenAnteil { get; set; }
    [OLVIgnore]
    public double? GastUmsatz { get; set; }
    [OLVIgnore]
    public double? BewertungEUR { get; set; }
    [OLVIgnore]
    public string Bewertung { get; set; }

		[OLVColumn("Jahr", DisplayIndex = 14, TextAlign = System.Windows.Forms.HorizontalAlignment.Center)]
		public double Zeitraum { get; set; }

		[OLVColumn(DisplayIndex = 13)]
		public string Suchtext { get; set; }

		[OLVIgnore]
		public int? Aufgabe { get; set; }

		[OLVIgnore]
		public int? AufgabeCount { get; set; }

    [OLVIgnore]
    public string Anmerkung { get; set; }
    #endregion
  }
}
//INSTALL-REMINDER: Spalte Anmerkung in DB hinzufügen.
//INSTALL-REMINDER: Spalte Aufgabe Count in DB hinzufügen.