/**
 * 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 java.io.File;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;

import javax.jms.JMSException;

import junit.framework.TestCase;

import org.apache.activemq.broker.Broker;
import org.apache.activemq.broker.BrokerFactory;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.StubConnection;
import org.apache.activemq.broker.TransportConnector;
import org.apache.activemq.command.ActiveMQDestination;
import org.apache.activemq.command.ConnectionId;
import org.apache.activemq.command.ConnectionInfo;
import org.apache.activemq.command.ConsumerInfo;
import org.apache.activemq.command.Message;
import org.apache.activemq.command.MessageAck;
import org.apache.activemq.command.MessageDispatch;
import org.apache.activemq.command.RemoveInfo;
import org.apache.activemq.command.SessionInfo;
import org.apache.activemq.transport.TransportFactory;

public class ClientTestSupport extends TestCase {

   protected BrokerService broker;
   protected long idGenerator;

   private ActiveMQConnectionFactory connFactory;
   private final String brokerURL = "vm://localhost?broker.persistent=false";

   @Override
   public void setUp() throws Exception {
      final AtomicBoolean connected = new AtomicBoolean(false);
      TransportConnector connector;

      // Start up a broker with a tcp connector.
      try {
         broker = BrokerFactory.createBroker(new URI(this.brokerURL));
         broker.getBrokerName();
         connector = new TransportConnector(TransportFactory.bind(new URI(this.brokerURL))) {
            // Hook into the connector so we can assert that the server
            // accepted a connection.
            @Override
            protected org.apache.activemq.broker.Connection createConnection(org.apache.activemq.transport.Transport transport) throws IOException {
               connected.set(true);
               return super.createConnection(transport);
            }
         };
         broker.addConnector(connector);
         broker.start();

      }
      catch (IOException e) {
         throw new JMSException("Error creating broker " + e);
      }
      catch (URISyntaxException e) {
         throw new JMSException("Error creating broker " + e);
      }

      URI connectURI;
      connectURI = connector.getServer().getConnectURI();

      // This should create the connection.
      connFactory = new ActiveMQConnectionFactory(connectURI);
   }

   @Override
   protected void tearDown() throws Exception {
      super.tearDown();
      if (broker != null) {
         broker.stop();
      }
   }

   public ActiveMQConnectionFactory getConnectionFactory() throws JMSException {
      if (this.connFactory == null) {
         throw new JMSException("ActiveMQConnectionFactory is null ");
      }
      return this.connFactory;
   }

   // Helper Classes
   protected ConnectionInfo createConnectionInfo() throws Exception {
      ConnectionInfo info = new ConnectionInfo();
      info.setConnectionId(new ConnectionId("connection:" + (++idGenerator)));
      info.setClientId(info.getConnectionId().getValue());
      return info;
   }

   protected SessionInfo createSessionInfo(ConnectionInfo connectionInfo) throws Exception {
      SessionInfo info = new SessionInfo(connectionInfo, ++idGenerator);
      return info;
   }

   protected ConsumerInfo createConsumerInfo(SessionInfo sessionInfo,
                                             ActiveMQDestination destination) throws Exception {
      ConsumerInfo info = new ConsumerInfo(sessionInfo, ++idGenerator);
      info.setBrowser(false);
      info.setDestination(destination);
      info.setPrefetchSize(1000);
      info.setDispatchAsync(false);
      return info;
   }

   protected RemoveInfo closeConsumerInfo(ConsumerInfo consumerInfo) {
      return consumerInfo.createRemoveCommand();
   }

   protected MessageAck createAck(ConsumerInfo consumerInfo, Message msg, int count, byte ackType) {
      MessageAck ack = new MessageAck();
      ack.setAckType(ackType);
      ack.setConsumerId(consumerInfo.getConsumerId());
      ack.setDestination(msg.getDestination());
      ack.setLastMessageId(msg.getMessageId());
      ack.setMessageCount(count);
      return ack;
   }

   protected Message receiveMessage(StubConnection connection, int maxWait) throws InterruptedException {
      while (true) {
         Object o = connection.getDispatchQueue().poll(maxWait, TimeUnit.MILLISECONDS);

         if (o == null) {
            return null;
         }

         if (o instanceof MessageDispatch) {
            MessageDispatch dispatch = (MessageDispatch) o;
            return dispatch.getMessage();
         }
      }
   }

   protected Broker getBroker() throws Exception {
      return this.broker != null ? this.broker.getBroker() : null;
   }

   public static void removeMessageStore() {
      if (System.getProperty("activemq.store.dir") != null) {
         recursiveDelete(new File(System.getProperty("activemq.store.dir")));
      }
      if (System.getProperty("derby.system.home") != null) {
         recursiveDelete(new File(System.getProperty("derby.system.home")));
      }
   }

   public static void recursiveDelete(File f) {
      if (f.isDirectory()) {
         File[] files = f.listFiles();
         for (int i = 0; i < files.length; i++) {
            recursiveDelete(files[i]);
         }
      }
      f.delete();
   }

}
