using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Net;
using System.Net.Sockets;
using System.Media;
using System.Windows.Threading;

namespace IPSend
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        UdpClient sendMe = new UdpClient(60501);
        UdpClient illReceive = new UdpClient(60500);
        Byte[] sendBytes;
        string returnData;
        IPEndPoint RemoteIpEndPoint = new IPEndPoint(IPAddress.Any, 0);

        public MainWindow()
        {
            InitializeComponent();
            TextRange tr = new TextRange(rtbPast.Document.ContentEnd, rtbPast.Document.ContentEnd);
            tr.Text = "Messenger";
            tr.ApplyPropertyValue(TextElement.ForegroundProperty, Brushes.Blue);
            tr.ApplyPropertyValue(TextElement.BackgroundProperty, Brushes.White);
            rtbPast.AppendText(Environment.NewLine);
            flowDoc.Blocks.FirstBlock.TextAlignment = TextAlignment.Center;
            try
            {
                illReceive.BeginReceive(new AsyncCallback(ReceiveText), null);
            }
            catch (Exception e)
            {
                MessageBox.Show(e.ToString());
            }
        }

        private void txtSend_GotFocus(object sender, RoutedEventArgs e)
        {
            txtSend.Text = "";
        }

        private void txtSend_LostFocus(object sender, RoutedEventArgs e)
        {
            if (txtSend.Text == "") txtSend.Text = "Plaats je bericht hier.";
        }

        private void btnSend_Click(object sender, RoutedEventArgs e)
        {
            if (txtSend.Text != "")
            {
                sendMsg();
                txtSend.Text = "Plaats je bericht hier.";
            }
        }

        private void txtSend_KeyDown_1(object sender, KeyEventArgs e)
        {
            if (e.Key == Key.Return)
            {
                btnSend.RaiseEvent(new RoutedEventArgs(Button.ClickEvent));
                txtSend.RaiseEvent(new RoutedEventArgs(TextBox.GotFocusEvent));
            }
        }

        void ReceiveText(IAsyncResult res)
        {
            try
            {
                byte[] received = illReceive.EndReceive(res, ref RemoteIpEndPoint);
                returnData = Encoding.UTF8.GetString(received);

                InformUser(returnData);

                illReceive.BeginReceive(new AsyncCallback(ReceiveText), null);
            }
            catch (Exception e)
            {
                MessageBox.Show(e.ToString());
            }
        }

        void sendMsg()
        {
            try
            {
                sendMe.Connect("192.168.0.219", 60501);

                // Sends a message to the host to which you have connected.
                sendBytes = Encoding.UTF8.GetBytes(txtSend.Text);
                sendMe.Send(sendBytes, sendBytes.Length);
                sendMe.Close();

                TextRange tr = new TextRange(rtbPast.Document.ContentEnd, rtbPast.Document.ContentEnd);
                tr.Text = String.Format("{0} - Jij: {1} {2}", DateTime.Now.ToShortTimeString(), txtSend.Text, Environment.NewLine);
                tr.ApplyPropertyValue(TextElement.ForegroundProperty, Brushes.Green);
                tr.ApplyPropertyValue(TextElement.BackgroundProperty, Brushes.Black);
            }
            catch (Exception e)
            {
                MessageBox.Show(e.ToString());
            }
        }

        void InformUser(string data)
        {
            // InvokeRequired tells you you're not on the correct thread to update the rtbPast
            if (rtbPast.Dispatcher.CheckAccess())
            {
                // Call InformUser(data) again, but on the correct thread
                rtbPast.Dispatcher.Invoke(new Action<string>(InformUser), data);

                // We're done for this thread
                return;
            }

            System.Reflection.Assembly a = System.Reflection.Assembly.GetExecutingAssembly();
            System.IO.Stream s = a.GetManifestResourceStream("IPSend.ns.wav");
            SoundPlayer player = new SoundPlayer(s);
            player.Play();

            TextRange tr = new TextRange(rtbPast.Document.ContentEnd, rtbPast.Document.ContentEnd);
            tr.Text = String.Format("{0} - Pa: {1} {2}", DateTime.Now.ToShortTimeString(), data, Environment.NewLine);
            tr.ApplyPropertyValue(TextElement.ForegroundProperty, Brushes.Red);
            tr.ApplyPropertyValue(TextElement.BackgroundProperty, Brushes.Black);
        }
    }
}