/**
 * 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.assertEquals;
import static org.junit.Assert.assertTrue;

import java.util.ArrayList;
import java.util.List;

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.Destination;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;

import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.command.ActiveMQQueue;
import org.junit.After;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;

public class RawRollbackTests {

   private static ConnectionFactory connectionFactory;
   private static Destination queue;
   private static BrokerService broker;

   @BeforeClass
   public static void clean() throws Exception {
      broker = new BrokerService();
      broker.setDeleteAllMessagesOnStartup(true);
      broker.setUseJmx(true);
      broker.start();
      ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory();
      connectionFactory.setBrokerURL("vm://localhost?async=false&waitForStart=5000&jms.prefetchPolicy.all=0");
      RawRollbackTests.connectionFactory = connectionFactory;
      queue = new ActiveMQQueue("queue");
   }

   @AfterClass
   public static void close() throws Exception {
      broker.stop();
   }

   @Before
   public void clearData() throws Exception {
      getMessages(false); // drain queue
      convertAndSend("foo");
      convertAndSend("bar");
   }

   @After
   public void checkPostConditions() throws Exception {

      Thread.sleep(1000L);
      List<String> list = getMessages(false);
      assertEquals(2, list.size());

   }

   @Test
   public void testReceiveMessages() throws Exception {

      List<String> list = getMessages(true);
      assertEquals(2, list.size());
      assertTrue(list.contains("foo"));

   }

   private void convertAndSend(String msg) throws Exception {
      Connection connection = connectionFactory.createConnection();
      connection.start();
      Session session = connection.createSession(true, Session.AUTO_ACKNOWLEDGE);
      MessageProducer producer = session.createProducer(queue);
      producer.send(session.createTextMessage(msg));
      producer.close();
      session.commit();
      session.close();
      connection.close();
   }

   private List<String> getMessages(boolean rollback) throws Exception {
      Connection connection = connectionFactory.createConnection();
      connection.start();
      Session session = connection.createSession(true, Session.AUTO_ACKNOWLEDGE);
      String next = "";
      List<String> msgs = new ArrayList<String>();
      while (next != null) {
         next = (String) receiveAndConvert(session);
         if (next != null)
            msgs.add(next);
      }
      if (rollback) {
         session.rollback();
      }
      else {
         session.commit();
      }
      session.close();
      connection.close();
      return msgs;
   }

   private String receiveAndConvert(Session session) throws Exception {
      MessageConsumer consumer = session.createConsumer(queue);
      Message message = consumer.receive(100L);
      consumer.close();
      if (message == null) {
         return null;
      }
      return ((TextMessage) message).getText();
   }
}
