/**
 * 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 static org.junit.Assert.fail;

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.TransportConnector;
import org.apache.activemq.command.ActiveMQTopic;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class AMQ3678Test implements MessageListener {

    private static Logger LOG = LoggerFactory.getLogger(AMQ3678Test.class);

    private BrokerService broker;
    private String connectionURI;

    private final AtomicInteger messagesSent = new AtomicInteger(0);
    private final AtomicInteger messagesReceived = new AtomicInteger(0);
    private final ActiveMQTopic destination = new ActiveMQTopic("XYZ");
    private final CountDownLatch latch = new CountDownLatch(2);
    private final int deliveryMode = DeliveryMode.NON_PERSISTENT;

    @Test(timeout = 60000)
    public void countConsumers() throws JMSException {
        ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory(connectionURI);
        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;

            @Override
            public void run() {
                while (!done) {
                    if (messagesSent.get() == 50) {
                        try {
                            broker.getAdminView().removeTopic(destination.getTopicName());
                        } catch (Exception e1) {
                            fail("Unable to remove destination:" + destination.getPhysicalName());
                        }
                    }

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

                        LOG.trace("sent message (" + val + ")");

                        if (val == 100) {
                            done = true;
                            latch.countDown();
                            producer.close();
                            producerSession.close();
                        }
                    } catch (JMSException e) {
                        e.printStackTrace();
                    }
                }
            }
        });

        t.start();

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

    @Before
    public void setUp() throws Exception {
        broker = new BrokerService();
        broker.setPersistent(false);
        broker.setUseJmx(true);
        broker.getManagementContext().setCreateConnector(false);
        broker.setAdvisorySupport(false);

        TransportConnector connector = broker.addConnector("tcp://localhost:0");
        broker.start();
        broker.waitUntilStarted();

        connectionURI = connector.getPublishableConnectString();
    }

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

    @Override
    public void onMessage(Message message) {
        try {
            message.acknowledge();
            int val = messagesReceived.incrementAndGet();
            LOG.trace("received message (" + val + ")");
            if (messagesReceived.get() == 100) {
                latch.countDown();
            }
        } catch (JMSException e) {
            e.printStackTrace();
        }
    }
}