package SocketLab2;

import java.io.IOException;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.LinkedList;
import java.util.Scanner;

public class Server {

    public static LinkedList<clientThread> clientList = new LinkedList();

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        try
        {
            ServerSocket serverSocket = new ServerSocket(20);
            System.out.println("Server started");
            new Thread()
            {
                @Override
                public void run()
                {
                    super.run();
                    Scanner consoleInput = new Scanner(System.in);

                    while (true)
                    {
                        String serverInput = consoleInput.nextLine();
                        System.out.println(serverInput);

                        for (int i = 0; i < clientList.size(); i++)
                        {
                            System.out.println(serverInput);
                            clientList.get(i).writer.println(serverInput);

                        }
                    }
                }
            }.start();

            while (true)
            {
                clientList.add(new clientThread(serverSocket.accept()));
                clientList.peekLast().start();
            }
        }
        catch (IOException e)
        {
            System.out.println("Sorry! Can not start the server");
        }

    }

}

class clientThread extends Thread
{
    Socket clientSocket;
    Scanner reader;
    PrintWriter writer;

    public clientThread(Socket clientSocket) throws IOException
    {
        this.clientSocket = clientSocket;
        this.reader = new Scanner( clientSocket.getInputStream() );
        this.writer = new PrintWriter( clientSocket.getOutputStream(), true );
    }

    @Override
    public void run()
    {
        try
        {
            while (clientSocket.isConnected())
            {
                System.out.println("Client: " + reader.nextLine());
            }
        }
        catch (Exception e)
        {
            System.out.println("Client Left");
        }
        Server.clientList.remove(this);
    }
}