package MV3500Cohort2024JulySeptember.homework2.Williams;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.Socket;

/**
 * Client file for HW2.
 *
 * @author ethanjwilliams
 */
public class HW2Client {

    /**
     * Default constructor
     */
    public HW2Client() {

    }

    static String DESTINATION_HOST = "localhost";
    static int DESTINATION_PORT = 2317;
    static int MAX_LOOP_COUNT = 1;

    /**
     * @param args command-line arguments
     */
    public static void main(String[] args) {
        if (args.length > 0) {
            DESTINATION_HOST = args[0];
        }
        if (args.length > 1) {
            DESTINATION_PORT = Integer.parseInt(args[1]);
        }
        if (args.length > 2) {
            MAX_LOOP_COUNT = Integer.parseInt(args[2]);
        }

        System.out.println("=======================================================");

        for (int loopCount = 1; loopCount <= MAX_LOOP_COUNT; loopCount++) {
            System.out.println(HW2Client.class.getName() + " creating new socket:");

            long startTime = System.currentTimeMillis();
            Socket socket = null;
            BufferedReader br = null;
            PrintWriter pw = null;

            try {
                socket = new Socket(DESTINATION_HOST, DESTINATION_PORT);
                InputStream is = socket.getInputStream();
                br = new BufferedReader(new InputStreamReader(is));
                OutputStream os = socket.getOutputStream();
                pw = new PrintWriter(os, true);

                String serverMessage = br.readLine();
                System.out.println("Server: " + serverMessage);

                String clientResponse = "Ethan";
                pw.println(clientResponse);
                System.out.println("Client: " + clientResponse);

                String serverFinalResponse = br.readLine();
                long readTime = System.currentTimeMillis();
                long timeLength = readTime - startTime;

                System.out.println("Server response: " + serverFinalResponse);
                System.out.println(HW2Client.class.getName() + ": time msec required for read = " + timeLength);
                System.out.println("=======================================================");

            } catch (IOException e) {
                System.out.println("Problem with " + HW2Client.class.getName() + " networking:");
                System.out.println("Error: " + e);
                if (e instanceof java.net.BindException) {
                    System.out.println("*** Be sure to stop any other running instances of programs using this port!");
                }
            } finally {
                try {
                    if (br != null) {
                        br.close();
                    }
                    if (pw != null) {
                        pw.close();
                    }
                    if (socket != null && !socket.isClosed()) {
                        socket.close();
                    }
                } catch (IOException e) {
                    System.out.println("Error closing resources: " + e);
                }
            }
        }
        System.out.println(HW2Client.class.getName() + " complete");
    }
}