/**
 * 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.transport.mqtt;

import java.io.IOException;
import java.net.Socket;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.UnknownHostException;
import java.nio.ByteBuffer;

import javax.net.ServerSocketFactory;
import javax.net.SocketFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLEngine;

import org.apache.activemq.broker.SslContext;
import org.apache.activemq.transport.Transport;
import org.apache.activemq.transport.TransportServer;
import org.apache.activemq.transport.nio.NIOSSLTransportServer;
import org.apache.activemq.transport.tcp.TcpTransport;
import org.apache.activemq.transport.tcp.TcpTransport.InitBuffer;
import org.apache.activemq.transport.tcp.TcpTransportServer;
import org.apache.activemq.util.IntrospectionSupport;
import org.apache.activemq.wireformat.WireFormat;

public class MQTTNIOSSLTransportFactory extends MQTTNIOTransportFactory {

    SSLContext context;

    @Override
    protected TcpTransportServer createTcpTransportServer(URI location, ServerSocketFactory serverSocketFactory) throws IOException, URISyntaxException {
        NIOSSLTransportServer result = new NIOSSLTransportServer(context, this, location, serverSocketFactory) {
            @Override
            protected Transport createTransport(Socket socket, WireFormat format) throws IOException {
                MQTTNIOSSLTransport transport = new MQTTNIOSSLTransport(format, socket);
                if (context != null) {
                    transport.setSslContext(context);
                }

                transport.setNeedClientAuth(isNeedClientAuth());
                transport.setWantClientAuth(isWantClientAuth());

                return transport;
            }
        };
        result.setAllowLinkStealing(true);
        return result;
    }

    @Override
    protected TcpTransport createTcpTransport(WireFormat wf, SocketFactory socketFactory, URI location, URI localLocation) throws UnknownHostException, IOException {
        return new MQTTNIOSSLTransport(wf, socketFactory, location, localLocation);
    }

    @Override
    public TcpTransport createTransport(WireFormat wireFormat, Socket socket,
            SSLEngine engine, InitBuffer initBuffer, ByteBuffer inputBuffer)
            throws IOException {
        return new MQTTNIOSSLTransport(wireFormat, socket, engine, initBuffer, inputBuffer);
    }

    @Override
    public TransportServer doBind(URI location) throws IOException {
        if (SslContext.getCurrentSslContext() != null) {
            try {
                context = SslContext.getCurrentSslContext().getSSLContext();
            } catch (Exception e) {
                throw new IOException(e);
            }
        }
        return super.doBind(location);
    }

}