import java.io.IOException;
import java.io.OutputStream;
import java.net.InetSocketAddress;
import java.text.SimpleDateFormat;
import java.util.Calendar;

import com.sun.net.httpserver.HttpExchange;
import com.sun.net.httpserver.HttpHandler;
import com.sun.net.httpserver.HttpServer;

public class TimeServer {
    static class GetHandler implements HttpHandler {
        @Override
        public void handle(HttpExchange exchange) throws IOException {

            var calendar = Calendar.getInstance();
            var dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss\n");
            byte[] response = dateFormat.format(calendar.getTime()).getBytes();

            // Set the response header and status code
            exchange.sendResponseHeaders(200, response.length);

            // Get the response body output stream
            OutputStream responseBody = exchange.getResponseBody();

            System.out.print(exchange.getRemoteAddress());
            responseBody.write(response);
            responseBody.close();
        }
    }

    public static void main(String[] args) throws Exception {
        // Create a server on port 8000
        HttpServer server = HttpServer.create(new InetSocketAddress(8000), 0);

        server.createContext("/", new GetHandler()); // "GET /" handler

        server.start(); // Start serving requests
    }
}