/*
 * Copyright 2015 Julien Viet
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package examples.telnet;

import io.termd.core.telnet.Option;
import io.termd.core.telnet.TelnetConnection;
import io.termd.core.telnet.TelnetHandler;
import io.termd.core.telnet.netty.NettyTelnetBootstrap;

import java.util.concurrent.TimeUnit;

/**
 * This examples shows a simple telnet server that negociates a couple of options.
 */
public class TelnetExample {

  public synchronized static void main(String[] args) throws Exception {
    NettyTelnetBootstrap bootstrap = new NettyTelnetBootstrap().setHost("localhost").setPort(4000);
    bootstrap.start(() -> new TelnetHandler() {
      @Override
      protected void onOpen(TelnetConnection conn) {
        System.out.println("Client connected");

        // Negociate window size and terminal type
        conn.writeDoOption(Option.TERMINAL_TYPE);
        conn.writeDoOption(Option.NAWS);
      }

      @Override
      protected void onNAWS(boolean naws) {
        if (naws) {
          System.out.println("Client will send window size changes");
        } else {
          System.out.println("Client won't send window size changes");
        }
      }

      @Override
      protected void onData(byte[] data) {
        System.out.println("Client sent " + new String(data));
      }

      @Override
      protected void onSize(int width, int height) {
        System.out.println("Window resized " + width + height);
      }

      @Override
      protected void onTerminalType(String terminalType) {
        System.out.println("Client declared its terminal as " + terminalType);
      }

      @Override
      protected void onClose() {
        System.out.println("Disconnected");
      }
    }).get(10, TimeUnit.SECONDS);
    System.out.println("Telnet server started on localhost:4000");
    TelnetExample.class.wait();
  }
}