package MV3500Cohort2024JulySeptember.homework2.Williams;

import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;

/**
 * Server file for HW2.
 *
 * @author ethanjwilliams
 */
public class HW2Server {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        DatagramSocket socket = null;
        String riddleAnswer = "echo";

        try {
            socket = new DatagramSocket(9876);
            byte[] receiveData = new byte[1024];
            byte[] sendData = new byte[1024];
            int count = 1;
            System.out.println("Server has started, waiting for client...");

            boolean isRunning = true;
            while (isRunning) {
                DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length);
                socket.receive(receivePacket);

                String message = new String(receivePacket.getData(), 0, receivePacket.getLength());
                InetAddress clientAddress = receivePacket.getAddress();
                int clientPort = receivePacket.getPort();

                System.out.println("Client sent: " + message);

                String response;
                if (message.trim().equalsIgnoreCase(riddleAnswer)) {
                    response = "Good Job!! You solved the riddle in " + count + " tries!";
                    isRunning = false;
                } else {
                    response = "Wrong answer. Try again!";
                    count++;
                }

                sendData = response.getBytes();
                DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length, clientAddress, clientPort);
                socket.send(sendPacket);

            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (socket != null && !socket.isClosed()) {
                socket.close();
            }
        }
    }
}