/**
 * 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.s3.blobstore.functions;

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

import javax.inject.Singleton;

import org.jclouds.s3.options.ListBucketOptions;
import org.jclouds.blobstore.options.ListContainerOptions;

import com.google.common.base.Function;

/**
 * @author Adrian Cole
 */
@Singleton
public class ContainerToBucketListOptions implements
         Function<ListContainerOptions, ListBucketOptions> {
   public ListBucketOptions apply(ListContainerOptions from) {
      checkNotNull(from, "set options to instance NONE instead of passing null");
      ListBucketOptions httpOptions = new ListBucketOptions();
      if (!from.isRecursive()) {
         httpOptions.delimiter("/");
      }
      if (from.getDir() != null) {// TODO unit test
         String path = from.getDir();
         if (!path.endsWith("/"))
            path = path + "/";
         httpOptions.withPrefix(path);
      }
      if (from.getMarker() != null) {
         httpOptions.afterMarker(from.getMarker());
      }
      if (from.getMaxResults() != null) {
         httpOptions.maxResults(from.getMaxResults());
      }
      return httpOptions;
   }
}
