/**
 * 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.activemq.bugs;

import java.io.IOException;
import java.lang.management.ManagementFactory;
import java.net.ServerSocket;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;

import javax.jms.Connection;
import javax.jms.DeliveryMode;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.MessageProducer;
import javax.jms.Session;

import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.ActiveMQTopicSubscriber;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.jmx.ManagementContext;
import org.apache.activemq.command.ActiveMQTopic;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

import static org.junit.Assert.fail;

public class AMQ3678Test implements MessageListener {

   public int deliveryMode = DeliveryMode.NON_PERSISTENT;

   private BrokerService broker;

   AtomicInteger messagesSent = new AtomicInteger(0);
   AtomicInteger messagesReceived = new AtomicInteger(0);

   ActiveMQTopic destination = new ActiveMQTopic("XYZ");

   int port;
   int jmxport;

   final CountDownLatch latch = new CountDownLatch(2);

   public static void main(String[] args) throws Exception {

   }

   public static int findFreePort() throws IOException {
      ServerSocket socket = null;

      try {
         // 0 is open a socket on any free port
         socket = new ServerSocket(0);
         return socket.getLocalPort();
      }
      finally {
         if (socket != null) {
            socket.close();
         }
      }
   }

   @Test
   public void countConsumers() throws JMSException {
      ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory("tcp://localhost:" + port);
      factory.setAlwaysSyncSend(true);
      factory.setDispatchAsync(false);

      final Connection producerConnection = factory.createConnection();
      producerConnection.start();

      final Connection consumerConnection = factory.createConnection();

      consumerConnection.setClientID("subscriber1");
      Session consumerMQSession = consumerConnection.createSession(false, Session.CLIENT_ACKNOWLEDGE);

      ActiveMQTopicSubscriber activeConsumer = (ActiveMQTopicSubscriber) consumerMQSession.createDurableSubscriber(destination, "myTopic?consumer.prefetchSize=1");

      activeConsumer.setMessageListener(this);

      consumerConnection.start();

      final Session producerSession = producerConnection.createSession(false, Session.AUTO_ACKNOWLEDGE);
      final MessageProducer producer = producerSession.createProducer(destination);
      producer.setDeliveryMode(deliveryMode);

      Thread t = new Thread(new Runnable() {

         private boolean done = false;

         public void run() {
            while (!done) {
               if (messagesSent.get() == 50) {
                  try {
                     broker.getAdminView().removeTopic(destination.getTopicName());
                  }
                  catch (Exception e1) {
                     // TODO Auto-generated catch block
                     e1.printStackTrace();
                     System.err.flush();
                     fail("Unable to remove destination:" + destination.getPhysicalName());
                  }
               }

               try {
                  producer.send(producerSession.createTextMessage());
                  int val = messagesSent.incrementAndGet();

                  System.out.println("sent message (" + val + ")");
                  System.out.flush();

                  if (val == 100) {
                     done = true;
                     latch.countDown();
                     producer.close();
                     producerSession.close();

                  }
               }
               catch (JMSException e) {
                  // TODO Auto-generated catch block
                  e.printStackTrace();
               }
            }
         }
      });

      t.start();

      try {
         if (!latch.await(10, TimeUnit.SECONDS)) {
            fail("did not receive all the messages");
         }
      }
      catch (InterruptedException e) {
         // TODO Auto-generated catch block
         fail("did not receive all the messages, exception waiting for latch");
         e.printStackTrace();
      }

      //

   }

   @Before
   public void setUp() throws Exception {

      try {
         port = findFreePort();
         jmxport = findFreePort();
      }
      catch (Exception e) {
         fail("Unable to obtain a free port on which to start the broker");
      }

      System.out.println("Starting broker");
      System.out.flush();
      broker = new BrokerService();
      broker.setPersistent(false);
      ManagementContext ctx = new ManagementContext(ManagementFactory.getPlatformMBeanServer());
      ctx.setConnectorPort(jmxport);
      broker.setManagementContext(ctx);
      broker.setUseJmx(true);
      //        broker.setAdvisorySupport(false);
      //        broker.setDeleteAllMessagesOnStartup(true);

      broker.addConnector("tcp://localhost:" + port).setName("Default");
      broker.start();

      System.out.println("End of Broker Setup");
      System.out.flush();
   }

   @After
   public void tearDown() throws Exception {
      broker.stop();
   }

   @Override
   public void onMessage(Message message) {
      try {
         message.acknowledge();
         int val = messagesReceived.incrementAndGet();
         System.out.println("received message (" + val + ")");
         System.out.flush();
         if (messagesReceived.get() == 100) {
            latch.countDown();
         }
      }
      catch (JMSException e) {
         // TODO Auto-generated catch block
         e.printStackTrace();
      }

   }

}
