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;

namespace WindowsFormsApp2
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (textBox2.Text != String.Empty && textBox3.Text != String.Empty)
            {
                var k = 0;
                Int32.TryParse(textBox1.Text, out k);
                if (k == 0 || k > listView1.Items.Count)
                {
                    var item = new ListViewItem();
                    item.Text = $"{listView1.Items.Count + 1}";
                    item.SubItems.Add(textBox2.Text);
                    item.SubItems.Add(textBox3.Text);
                    listView1.Items.Add(item);
                }
                else
                {
                    listView1.Items[k - 1].SubItems[1].Text = textBox2.Text;
                    listView1.Items[k - 1].SubItems[2].Text = textBox3.Text;
                }
                textBox1.Text = $"{ listView1.Items.Count + 1}";
                textBox2.Text = String.Empty;
                textBox3.Text = String.Empty;
            }
            else
                MessageBox.Show("Wpypełnij pola","Zapisz");
        }

        private void listView1_DoubleClick(object sender, EventArgs e)
        {
            var item = listView1.SelectedItems[0];
            textBox1.Text = item.Text;
            textBox2.Text = item.SubItems[1].Text;
            textBox3.Text = item.SubItems[2].Text;
        }

        private void Form1_FormClosed(object sender, FormClosedEventArgs e)
        {
            var db = new SQLite.SQLiteConnection("terminy.db");
            db.CreateTable<Termin>();
            for(var i = 0; i < listView1.Items.Count; i++)
            {
                var obj = new Termin();
                obj.ID = Int32.Parse(listView1.Items[i].Text);
                obj.Data = listView1.Items[i].SubItems[1].Text;
                obj.Osoba = listView1.Items[i].SubItems[2].Text;
                db.Insert(obj);
            }
        }
    }
}