/*
 *
 * 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.qpid.test.unit.basic;

import org.apache.qpid.client.AMQConnection;
import org.apache.qpid.client.AMQDestination;
import org.apache.qpid.client.AMQQueue;
import org.apache.qpid.client.AMQSession;
import org.apache.qpid.client.vmbroker.AMQVMBrokerCreationException;
import org.apache.qpid.client.transport.TransportConnection;
import org.apache.qpid.client.message.JMSTextMessage;
import org.apache.qpid.test.VMBrokerSetup;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import javax.jms.*;

import junit.framework.TestCase;
import junit.framework.Assert;

public class TextMessageTest extends TestCase implements MessageListener
{
    private AMQConnection _connection;
    private Destination _destination;
    private AMQSession _session;
    private final List<JMSTextMessage> received = new ArrayList<JMSTextMessage>();
    private final List<String> messages = new ArrayList<String>();
    private int _count = 100;
    public String _connectionString = "vm://:1";

    protected void setUp() throws Exception
    {
        super.setUp();
        try
        {
            init(new AMQConnection(_connectionString, "guest", "guest", randomize("Client"), "/test_path"));
        }
        catch (Exception e)
        {
            fail("Unable to initialilse connection: " + e);
        }
    }

    protected void tearDown() throws Exception
    {
        super.tearDown();
    }

    private void init(AMQConnection connection) throws Exception
    {
        Destination destination = new AMQQueue(randomize("TextMessageTest"), true);
        init(connection, destination);
    }

    private void init(AMQConnection connection, Destination destination) throws Exception
    {
        _connection = connection;
        _destination = destination;
        _session = (AMQSession) connection.createSession(false, AMQSession.AUTO_ACKNOWLEDGE);

        //set up a slow consumer
        _session.createConsumer(destination).setMessageListener(this);
        connection.start();
    }

    public void test() throws Exception
    {
        int count = _count;
        send(count);
        waitFor(count);
        check();
        System.out.println("Completed without failure");
        _connection.close();
    }

    void send(int count) throws JMSException
    {
        //create a publisher
        MessageProducer producer = _session.createProducer(_destination);
        for (int i = 0; i < count; i++)
        {
            String text = "Message " + i;
            messages.add(text);
            producer.send(_session.createTextMessage(text));
        }
    }

    void waitFor(int count) throws InterruptedException
    {
        synchronized(received)
        {
            while (received.size() < count)
            {
                received.wait();
            }
        }
    }

    void check() throws JMSException
    {
        List<String> actual = new ArrayList<String>();
        for (JMSTextMessage m : received)
        {
            actual.add(m.getText());
            
            try
            {
                m.setText("Test text");
                Assert.fail("Message should not be writeable");
            }
            catch (MessageNotWriteableException mnwe)
            {
                //normal execution
            }

        }

        assertEqual(messages.iterator(), actual.iterator());
    }

    private static void assertEqual(Iterator expected, Iterator actual)
    {
        List<String> errors = new ArrayList<String>();
        while (expected.hasNext() && actual.hasNext())
        {
            try
            {
                assertEqual(expected.next(), actual.next());
            }
            catch (Exception e)
            {
                errors.add(e.getMessage());
            }
        }
        while (expected.hasNext())
        {
            errors.add("Expected " + expected.next() + " but no more actual values.");
        }
        while (actual.hasNext())
        {
            errors.add("Found " + actual.next() + " but no more expected values.");
        }
        if (!errors.isEmpty())
        {
            throw new RuntimeException(errors.toString());
        }
    }

    private static void assertEqual(Object expected, Object actual)
    {
        if (!expected.equals(actual))
        {
            throw new RuntimeException("Expected '" + expected + "' found '" + actual + "'");
        }
    }

    public void onMessage(Message message)
    {
        synchronized(received)
        {
            received.add((JMSTextMessage) message);
            received.notify();
        }
    }

    private static String randomize(String in)
    {
        return in + System.currentTimeMillis();
    }

    public static void main(String[] argv) throws Exception
    {
        TextMessageTest test = new TextMessageTest();
        test._connectionString = argv.length == 0 ? "vm://:1" : argv[0];
        test.setUp();
        if (argv.length > 1)
        {
            test._count = Integer.parseInt(argv[1]);
        }
        test.test();
    }

    public static junit.framework.Test suite()
    {
        return new VMBrokerSetup(new junit.framework.TestSuite(TextMessageTest.class));
    }
}
