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

namespace Übungen_LF6_WinFormanwendung
{
    public partial class BLZChecker : Form
    {
        //Datenspeicher
        Dictionary<string, Bank> BANKDATEN= new Dictionary<string,Bank>();

        public BLZChecker()
        {
            InitializeComponent();
        }

        private void button_ende_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        private void button_prüfen_Click(object sender, EventArgs e)
        {
            //Initialisieren
            textBox_confirm.Text = "";
            textBox_NameBank.Text = "";
            textBox_Ort.Text = "";

            Bank tmpBank = new Bank();

            if (BANKDATEN.ContainsKey(textBox_blz.Text))
            {
                BANKDATEN.TryGetValue(textBox_blz.Text, out tmpBank);
                textBox_confirm.Text = "OK";
                textBox_NameBank.Text = tmpBank.BANKNAME;
                textBox_Ort.Text = tmpBank.SITZ;
            }
            else
            {
                textBox_confirm.Text = "Nicht enthalten";
            }
        }

        private void button_suchen_einlesen_Click(object sender, EventArgs e)
        {
            openFileDialog1.Filter = "CSV-Datei (*.csv)|*.csv|Textdatei (*.txt)|*.txt|Alle Dateien(*.*)|*.*";

            if (openFileDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                textBox_einlesen.Text = openFileDialog1.FileName;

                textBox_processed.Text = einlesen(openFileDialog1.FileName).ToString();

            }
        }

        public int einlesen(string filePath)
        {
            int anzahlDatensätze = 0;

            try
            {

                //Dateileseroutine 
                StreamReader tr = new StreamReader(filePath);

                // Header überlesen
                tr.ReadLine();

                while (!tr.EndOfStream)
                {
                                        
                    string zeile = tr.ReadLine();
                    string[] CSVREADLINE = zeile.Split(';');
                    Bank obj = new Bank(CSVREADLINE);

                    //Wenn Key bereits vorhanden dann wird übersprungen ansonsten neuer eintrag in der Datenbank
                    if (!BANKDATEN.ContainsKey(obj.BLZ))
                    {
                        anzahlDatensätze += 1;
                        Console.WriteLine(obj.BLZ);
                        BANKDATEN.Add(obj.BLZ, obj);
                    }
                }

                // close the stream
                tr.Close();

            }
            catch (Exception e)
            {

                Console.WriteLine("Fehler: {0}", e.ToString());
            }

            return anzahlDatensätze;
        }

        
    }
}