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

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

        TcpClient client;
        StreamWriter streamWriter;
        StreamReader streamReader;
        private void btConnect_Click(object sender, EventArgs e) {
            string host = tbHostAddress.Text;
            int port = System.Convert.ToInt16(nUDPort.Value);
            try {
                client = new TcpClient(host, port);
                lbClient.Items.Add("Nawiązano połączenie z " + host + " na porcie: " + port);
                btDisconnect.Enabled = true;
                btConnect.Enabled = false;
                bwConnect.RunWorkerAsync();
                //client.Close();
            } catch (Exception ex) {
                lbClient.Items.Add("Błąd: Nie udało się nawiązać połączenia!");
                MessageBox.Show(ex.ToString());
            }
        }

        private void bwConnect_DoWork(object sender, DoWorkEventArgs e) {
            var stream = client.GetStream();
            streamWriter = new StreamWriter(stream);
            streamWriter.Write("hello from fifiszym.ga\n");
            streamWriter.Flush();
            streamReader = new StreamReader(stream);
            while (true) {
                try {
                    var line = streamReader.ReadLine();
                    if (line != null) {
                        lbClient.Invoke((MethodInvoker)delegate { lbClient.Items.Add(line); });
                        if (line.StartsWith("disconnect")) {
                            btConnect.Invoke((MethodInvoker)delegate { btConnect.Enabled = true; });
                            btDisconnect.Invoke((MethodInvoker)delegate { btDisconnect.Enabled = false; });
                            break;
                        }
                    }
                } catch {
                    break;
                }

            }
        }

        private void btDisconnect_Click(object sender, EventArgs e) {
            streamWriter.Write("disconnect\n");
            streamWriter.Close();
            client.Close();
            btDisconnect.Enabled = false;
            btConnect.Enabled = true;
        }

        private void btSendMessage_Click(object sender, EventArgs e) {
            if (streamWriter.BaseStream != null) {
                streamWriter.Write(tbMessage.Text + "\n");
                streamWriter.Flush();
            }
        }
    }
}