/**
 * Licensed to jclouds, Inc. (jclouds) under one or more
 * contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  jclouds 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.jclouds.openstack.swift.blobstore.functions;

import static com.google.common.base.Preconditions.checkNotNull;

import javax.inject.Singleton;

import org.jclouds.blobstore.options.ListContainerOptions;

import com.google.common.base.Function;

/**
 * @author Adrian Cole
 */
@Singleton
public class BlobStoreListContainerOptionsToListContainerOptions
         implements
         Function<ListContainerOptions, org.jclouds.openstack.swift.options.ListContainerOptions> {
   public org.jclouds.openstack.swift.options.ListContainerOptions apply(
            ListContainerOptions from) {
      checkNotNull(from, "set options to instance NONE instead of passing null");
      org.jclouds.openstack.swift.options.ListContainerOptions options = new org.jclouds.openstack.swift.options.ListContainerOptions();
      if ((from.getDir() == null) && (from.isRecursive())) {
         options.withPrefix("");
      }
      if ((from.getDir() == null) && (!from.isRecursive())) {
         options.underPath("");
      }
      if ((from.getDir() != null) && (from.isRecursive())) {
         options.withPrefix(from.getDir().endsWith("/") ? from.getDir() : from.getDir() + "/");
      }
      if ((from.getDir() != null) && (!from.isRecursive())) {
         options.underPath(from.getDir());
      }
      if (from.getMarker() != null) {
         options.afterMarker(from.getMarker());
      }
      if (from.getMaxResults() != null) {
         options.maxResults(from.getMaxResults());
      }

      return options;
   }

}
