/**
 * 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;

import javax.jms.Destination;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Queue;
import javax.jms.QueueBrowser;
import javax.jms.Session;
import javax.jms.TextMessage;
import java.util.ArrayList;
import java.util.Enumeration;

import org.apache.activemq.test.JmsResourceProvider;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 *
 */
public class JmsQueueTransactionTest extends JmsTransactionTestSupport {

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

   /**
    * @see org.apache.activemq.JmsTransactionTestSupport#getJmsResourceProvider()
    */
   @Override
   protected JmsResourceProvider getJmsResourceProvider() {
      JmsResourceProvider p = new JmsResourceProvider();
      p.setTopic(false);
      return p;
   }

   /**
    * Tests if the the connection gets reset, the messages will still be
    * received.
    *
    * @throws Exception
    */
   public void testReceiveTwoThenCloseConnection() throws Exception {
      Message[] outbound = new Message[]{session.createTextMessage("First Message"), session.createTextMessage("Second Message")};

      // lets consume any outstanding messages from previous test runs
      beginTx();
      while (consumer.receive(1000) != null) {
      }
      commitTx();

      beginTx();
      producer.send(outbound[0]);
      producer.send(outbound[1]);
      commitTx();

      LOG.info("Sent 0: " + outbound[0]);
      LOG.info("Sent 1: " + outbound[1]);

      ArrayList<Message> messages = new ArrayList<>();
      beginTx();
      Message message = consumer.receive(2000);
      assertEquals(outbound[0], message);

      message = consumer.receive(2000);
      assertNotNull(message);
      assertEquals(outbound[1], message);

      // Close and reopen connection.
      reconnect();

      // Consume again.. the previous message should
      // get redelivered.
      beginTx();
      message = consumer.receive(2000);
      assertNotNull("Should have re-received the first message again!", message);
      messages.add(message);
      assertEquals(outbound[0], message);

      message = consumer.receive(5000);
      assertNotNull("Should have re-received the second message again!", message);
      messages.add(message);
      assertEquals(outbound[1], message);
      commitTx();

      Message inbound[] = new Message[messages.size()];
      messages.toArray(inbound);

      assertTextMessagesEqual("Rollback did not work", outbound, inbound);
   }

   /**
    * Tests sending and receiving messages with two sessions(one for producing
    * and another for consuming).
    *
    * @throws Exception
    */
   public void testSendReceiveInSeperateSessionTest() throws Exception {
      session.close();
      int batchCount = 10;

      for (int i = 0; i < batchCount; i++) {
         // Session that sends messages
         {
            Session session = resourceProvider.createSession(connection);
            this.session = session;
            MessageProducer producer = resourceProvider.createProducer(session, destination);
            // consumer = resourceProvider.createConsumer(session,
            // destination);
            beginTx();
            producer.send(session.createTextMessage("Test Message: " + i));
            commitTx();
            session.close();
         }

         // Session that consumes messages
         {
            Session session = resourceProvider.createSession(connection);
            this.session = session;
            MessageConsumer consumer = resourceProvider.createConsumer(session, destination);

            beginTx();
            TextMessage message = (TextMessage) consumer.receive(1000 * 5);
            assertNotNull("Received only " + i + " messages in batch ", message);
            assertEquals("Test Message: " + i, message.getText());

            commitTx();
            session.close();
         }
      }
   }

   /**
    * Tests the queue browser. Browses the messages then the consumer tries to
    * receive them. The messages should still be in the queue even when it was
    * browsed.
    *
    * @throws Exception
    */
   public void testReceiveBrowseReceive() throws Exception {
      Message[] outbound = new Message[]{session.createTextMessage("First Message"), session.createTextMessage("Second Message"), session.createTextMessage("Third Message")};

      // lets consume any outstanding messages from previous test runs
      beginTx();
      while (consumer.receive(1000) != null) {
      }
      commitTx();

      beginTx();
      producer.send(outbound[0]);
      producer.send(outbound[1]);
      producer.send(outbound[2]);
      commitTx();

      // Get the first.
      beginTx();
      assertEquals(outbound[0], consumer.receive(1000));
      consumer.close();
      commitTx();

      beginTx();
      QueueBrowser browser = session.createBrowser((Queue) destination);
      Enumeration enumeration = browser.getEnumeration();

      // browse the second
      assertTrue("should have received the second message", enumeration.hasMoreElements());
      assertEquals(outbound[1], (Message) enumeration.nextElement());

      // browse the third.
      assertTrue("Should have received the third message", enumeration.hasMoreElements());
      assertEquals(outbound[2], (Message) enumeration.nextElement());

      LOG.info("Check for more...");
      // There should be no more.
      boolean tooMany = false;
      while (enumeration.hasMoreElements()) {
         LOG.info("Got extra message: " + ((TextMessage) enumeration.nextElement()).getText());
         tooMany = true;
      }
      assertFalse(tooMany);
      LOG.info("close browser...");
      browser.close();

      LOG.info("reopen and consume...");
      // Re-open the consumer.
      consumer = resourceProvider.createConsumer(session, destination);
      // Receive the second.
      assertEquals(outbound[1], consumer.receive(1000));
      // Receive the third.
      assertEquals(outbound[2], consumer.receive(1000));
      consumer.close();

      commitTx();
   }

   public void testCloseConsumer() throws Exception {
      Destination dest = session.createQueue(getSubject() + "?consumer.prefetchSize=0");
      producer = session.createProducer(dest);
      beginTx();
      producer.send(session.createTextMessage("message 1"));
      producer.send(session.createTextMessage("message 2"));
      commitTx();

      beginTx();
      consumer = session.createConsumer(dest);
      Message message1 = consumer.receive(1000);
      String text1 = ((TextMessage) message1).getText();
      assertNotNull(message1);
      assertEquals("message 1", text1);

      consumer.close();

      consumer = session.createConsumer(dest);

      Message message2 = consumer.receive(1000);
      String text2 = ((TextMessage) message2).getText();
      assertNotNull(message2);
      assertEquals("message 2", text2);
      commitTx();
   }

}
