using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
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.Windows.Threading;

namespace serverDoWielu
{
    public partial class MainWindow : Window
    {

        private List<TcpClient> listaClientow = new List<TcpClient>();
        private List<StreamReader> listaSTR = new List<StreamReader>();
        private List<StreamWriter> listaSTW = new List<StreamWriter>();
        StreamReader STR;
        StreamWriter STW;

        private string received;
        private String text_to_send;
        public BackgroundWorker worker1;
        public BackgroundWorker worker2;
        public BackgroundWorker worker3;
        int licznikClientow;

        public MainWindow()
        {
            InitializeComponent();
            worker1 = new BackgroundWorker();
            worker1.DoWork += backgroundWorker1_DoWork;
            worker2 = new BackgroundWorker();
            worker2.DoWork += backgroundWorker2_DoWork;
            worker3 = new BackgroundWorker();
            worker3.DoWork += backgroundWorker3_DoWork;
        }

        private void button_Click(object sender, RoutedEventArgs e)
        {
            worker3.RunWorkerAsync();
        }
        private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            List<StreamReader> tmp = new List<StreamReader>(listaSTR);
            while (true)
            {
                try
                {
                    received = "";
                    for (int i = 0; i < licznikClientow; i++)
                    {
                        //received += listaSTR[i].ReadLine();
                        if (!listaSTR[i].EndOfStream)
                        {
                            received += listaSTR[i].ReadLine();
                            text_to_send = received;
                            if (text_to_send != "")
                            {
                                this.textBox.Dispatcher.Invoke(DispatcherPriority.Normal, (ThreadStart)delegate () { textBox.AppendText("->> " + text_to_send + "\n"); });
                                worker2.RunWorkerAsync();
                            }
                        }
                    }

                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message);
                }
            }
        }
        private void backgroundWorker2_DoWork(object sender, DoWorkEventArgs e)
        {

                List<StreamWriter> tmp = new List<StreamWriter>(listaSTW);

                foreach (var item in tmp)
                {
                    item.WriteLine(text_to_send);
                }


            worker2.CancelAsync();
        }
        private void backgroundWorker3_DoWork(object sender, DoWorkEventArgs e)
        {
            TcpListener listener = new TcpListener(IPAddress.Any, 13000);

            bool NieMaZadnegoKlienta = true;
           licznikClientow = 0;
            while (true)
            {
                listener.Start();
                listaClientow.Add(new TcpClient()); // add new
                listaClientow[licznikClientow] = listener.AcceptTcpClient(); //przypisujemy
                listaSTR.Add(new StreamReader(  listaClientow[licznikClientow].GetStream() ) );  // to read
                listaSTW.Add(new StreamWriter(  listaClientow[licznikClientow].GetStream() ) );   // to send
                listaSTW[licznikClientow].AutoFlush = true; //clear
                if(listaClientow[0].Connected && NieMaZadnegoKlienta) // start threads
                {
                    NieMaZadnegoKlienta = false;
                    worker1.RunWorkerAsync();  // this thread listens
                    worker2.WorkerSupportsCancellation = true; //this one sends
                }
                licznikClientow++;
            }
        }

        private void button1_Click(object sender, RoutedEventArgs e)
        {
            foreach (var item in listaSTW)     // sending to all people
            {
                item.WriteLine("@@@@@@@@@@@");
            }
        }
    }
}