/*
    * 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.chemistry.opencmis.client.bindings.spi.webservices;
  
  import java.io.StringWriter;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import javax.xml.namespace.QName;
  import javax.xml.transform.OutputKeys;
  import javax.xml.transform.Transformer;
  import javax.xml.transform.dom.DOMSource;
  import javax.xml.transform.stream.StreamResult;
  import javax.xml.ws.BindingProvider;
  import javax.xml.ws.soap.MTOMFeature;
  
  import org.apache.chemistry.opencmis.client.bindings.impl.CmisBindingsHelper;
  import org.apache.chemistry.opencmis.commons.SessionParameter;
  import org.apache.chemistry.opencmis.commons.exceptions.CmisBaseException;
  import org.apache.chemistry.opencmis.commons.exceptions.CmisConnectionException;
  import org.apache.chemistry.opencmis.commons.impl.XMLUtils;
  import org.apache.chemistry.opencmis.commons.spi.AuthenticationProvider;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.w3c.dom.Element;
  
  /**
   * WebSphere JAX-WS implementation
   */
  public class WebSpherePortProvider extends AbstractPortProvider {
      private static final Logger LOG = LoggerFactory.getLogger(WebSpherePortProvider.class);
  
      /**
       * Creates a port object.
       */
      @Override
      protected BindingProvider createPortObject(CmisServiceHolder serviceHolder) {
          if (LOG.isDebugEnabled()) {
              LOG.debug("Creating Web Service port object of " + serviceHolder.getServiceName() + "...");
          }
  
          try {
              // create port object
              BindingProvider portObject = createPortObjectFromServiceHolder(serviceHolder, new MTOMFeature());
  
              // add SOAP and HTTP authentication headers
              AuthenticationProvider authProvider = CmisBindingsHelper.getAuthenticationProvider(getSession());
              Map<String, List<String>> httpHeaders = null;
              if (authProvider != null) {
                  // SOAP header
                  Element soapHeader = authProvider.getSOAPHeaders(portObject);
                  if (soapHeader != null) {
                      Transformer transformer = XMLUtils.newTransformer();
                      StringWriter headerXml = new StringWriter();
                      transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
                      transformer.transform(new DOMSource(soapHeader), new StreamResult(headerXml));
  
                      Map<QName, List<String>> header = new HashMap<QName, List<String>>();
                      header.put(new QName(soapHeader.getNamespaceURI(), soapHeader.getLocalName()),
                              Collections.singletonList(headerXml.toString()));
                      portObject.getRequestContext().put("jaxws.binding.soap.headers.outbound", header);
                  }
  
                  // HTTP header
                  String url = (serviceHolder.getEndpointUrl() != null ? serviceHolder.getEndpointUrl().toString()
                          : serviceHolder.getServiceObject().getWSDLDocumentLocation().toString());
                  httpHeaders = authProvider.getHTTPHeaders(url);
  
                  // TODO: set SSL Factory
  
                  // TODO: set Hostname Verifier
              }
  
              // set HTTP headers
              setHTTPHeaders(portObject, httpHeaders);
  
              // set endpoint URL
              setEndpointUrl(portObject, serviceHolder.getEndpointUrl());
  
              // timeouts
              int connectTimeout = getSession().get(SessionParameter.CONNECT_TIMEOUT, -1);
             if (connectTimeout >= 0) {
                 portObject.getRequestContext().put("connection_timeout", connectTimeout);
             }
 
             int readTimeout = getSession().get(SessionParameter.READ_TIMEOUT, -1);
             if (readTimeout >= 0) {
                 portObject.getRequestContext().put("request_timeout", readTimeout);
             }
 
             return portObject;
         } catch (CmisBaseException ce) {
             throw ce;
         } catch (Exception e) {
             throw new CmisConnectionException("Cannot initalize Web Services port object: " + e.getMessage(), e);
         }
     }
 }