/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you 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 org.apache.myfaces.tobago.example.demo;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import javax.enterprise.context.SessionScoped;
  //import javax.faces.push.Push;
  //import javax.faces.push.PushContext;
  import javax.inject.Inject;
  import javax.inject.Named;
  import java.io.Serializable;
  import java.lang.invoke.MethodHandles;
  import java.util.concurrent.Executors;
  import java.util.concurrent.ScheduledExecutorService;
  import java.util.concurrent.TimeUnit;
  
  @SessionScoped
  @Named
  public class WebSocketController implements Serializable {
  
    private static final Logger LOG = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
  
    private ScheduledExecutorService scheduledExecutorService;
  
    @Inject
  //  @Push(channel = "clock")
  //  private PushContext push;
  
    public String startClock() {
      if (scheduledExecutorService == null || scheduledExecutorService.isShutdown()) {
        scheduledExecutorService = Executors.newSingleThreadScheduledExecutor();
      }
  
      scheduledExecutorService.scheduleAtFixedRate(new Runnable() {
        @Override
        public void run() {
  //        push.send(LocalTime.now().toString());
        }
      }, 0, 17, TimeUnit.MILLISECONDS);
      return null;
    }
  
    public String stopClock() {
      if (scheduledExecutorService != null && !scheduledExecutorService.isShutdown()) {
        scheduledExecutorService.shutdown();
      }
      return null;
    }
  }