/**
    *
    * Copyright (C) 2011 Cloud Conscious, LLC. <info@cloudconscious.com>
    *
    * ====================================================================
    * Licensed 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.jclouds.s3.binders;
  
  import java.util.Properties;
  
  import javax.inject.Singleton;
  import javax.ws.rs.core.MediaType;
  import javax.xml.parsers.FactoryConfigurationError;
  import javax.xml.parsers.ParserConfigurationException;
  
  import org.jclouds.s3.domain.BucketLogging;
  import org.jclouds.s3.domain.AccessControlList.CanonicalUserGrantee;
  import org.jclouds.s3.domain.AccessControlList.EmailAddressGrantee;
  import org.jclouds.s3.domain.AccessControlList.Grant;
  import org.jclouds.s3.domain.AccessControlList.GroupGrantee;
  import org.jclouds.s3.reference.S3Constants;
  import org.jclouds.http.HttpRequest;
  import org.jclouds.rest.Binder;
  
  import com.google.common.base.Throwables;
  import com.jamesmurty.utils.XMLBuilder;
  
  /**
   * 
   * @author Adrian Cole
   */
  @Singleton
  public class BindBucketLoggingToXmlPayload implements Binder {
     @Override
     public <R extends HttpRequest> R bindToRequest(R request, Object payload) {
        BucketLogging from = (BucketLogging) payload;
        Properties outputProperties = new Properties();
        outputProperties.put(javax.xml.transform.OutputKeys.OMIT_XML_DECLARATION, "yes");
        try {
           String stringPayload = generateBuilder(from).asString(outputProperties);
           request.setPayload(stringPayload);
           request.getPayload().getContentMetadata().setContentType(MediaType.TEXT_XML);
        } catch (Exception e) {
           Throwables.propagateIfPossible(e);
           throw new RuntimeException("error transforming bucketLogging: " + from, e);
        }
        return request;
     }
  
     protected XMLBuilder generateBuilder(BucketLogging bucketLogging) throws ParserConfigurationException,
           FactoryConfigurationError {
        XMLBuilder rootBuilder = XMLBuilder.create("BucketLoggingStatus")
              .attr("xmlns", S3Constants.S3_REST_API_XML_NAMESPACE).e("LoggingEnabled");
        rootBuilder.e("TargetBucket").t(bucketLogging.getTargetBucket());
        rootBuilder.e("TargetPrefix").t(bucketLogging.getTargetPrefix());
        XMLBuilder grantsBuilder = rootBuilder.elem("TargetGrants");
        for (Grant grant : bucketLogging.getTargetGrants()) {
           XMLBuilder grantBuilder = grantsBuilder.elem("Grant");
           XMLBuilder granteeBuilder = grantBuilder.elem("Grantee").attr("xmlns:xsi",
                 "http://www.w3.org/2001/XMLSchema-instance");
  
           if (grant.getGrantee() instanceof GroupGrantee) {
              granteeBuilder.attr("xsi:type", "Group").elem("URI").text(grant.getGrantee().getIdentifier());
           } else if (grant.getGrantee() instanceof CanonicalUserGrantee) {
              CanonicalUserGrantee grantee = (CanonicalUserGrantee) grant.getGrantee();
              granteeBuilder.attr("xsi:type", "CanonicalUser").elem("ID").text(grantee.getIdentifier()).up();
              if (grantee.getDisplayName() != null) {
                 granteeBuilder.elem("DisplayName").text(grantee.getDisplayName());
              }
           } else if (grant.getGrantee() instanceof EmailAddressGrantee) {
              granteeBuilder.attr("xsi:type", "AmazonCustomerByEmail").elem("EmailAddress")
                    .text(grant.getGrantee().getIdentifier());
           }
           grantBuilder.elem("Permission").text(grant.getPermission().toString());
        }
        return grantsBuilder;
     }
  
  }