import java.io.*;
import java.net.*;
import java.util.*;
import java.nio.*;
import java.nio.channels.*;
import java.nio.charset.Charset;

public class QuoteServerThread extends Thread {

    protected DatagramSocket socket = null;
    protected BufferedReader in = null;
    protected boolean moreQuotes = true;

    protected DatagramChannel dChannel;
    InetSocketAddress sockAddr;

    public QuoteServerThread() throws IOException {
	this("QuoteServerThread");
    }

    public QuoteServerThread(String name) throws IOException {
        super(name);

        dChannel = DatagramChannel.open();
        dChannel.socket().bind(new InetSocketAddress(4445));

        try {
            in = new BufferedReader(new FileReader("one-liners.txt"));
        } catch (FileNotFoundException e) {
            System.err.println("Could not open quote file. Serving time instead.");
        }
    }

    public void run() {

        while (moreQuotes) {
            try {

                sockAddr = (InetSocketAddress)dChannel.receive(ByteBuffer.allocate(2000));

                String dString = null;
                if (in == null)
                    dString = new Date().toString();
                else
                    dString = getNextQuote();

                System.out.println(dString.length() + ":" + dString);

                Charset charset = Charset.forName("ISO-8859-1");
                ByteBuffer buf = charset.encode(dString);

                dChannel.send(buf, sockAddr);
            } catch (IOException e) {
                e.printStackTrace();
		moreQuotes = false;
            }
        }

        try {
          dChannel.close();
        }
        catch(IOException e) {
          e.printStackTrace();
        }
    }

    protected String getNextQuote() {
        String returnValue = null;
        try {
            if ((returnValue = in.readLine()) == null) {
                in.close();
		moreQuotes = false;
                returnValue = "No more quotes. Goodbye.";
            }
        } catch (IOException e) {
            returnValue = "IOException occurred in server.";
        }
        return returnValue;
    }
}