/**
    * 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.azureblob.blobstore.functions;
  
  import static com.google.common.base.Preconditions.checkNotNull;
  
  import java.util.Map;
  
  import javax.inject.Inject;
  import javax.inject.Singleton;
  
  import org.jclouds.azureblob.domain.BlobProperties;
  import org.jclouds.azureblob.domain.PublicAccess;
  import org.jclouds.blobstore.domain.MutableBlobMetadata;
  import org.jclouds.blobstore.domain.StorageType;
  import org.jclouds.blobstore.domain.internal.MutableBlobMetadataImpl;
  import org.jclouds.blobstore.strategy.IfDirectoryReturnNameStrategy;
  import org.jclouds.http.HttpUtils;
  
  import com.google.common.base.Function;
  
  /**
   * @author Adrian Cole
   */
  @Singleton
  public class BlobPropertiesToBlobMetadata implements Function<BlobProperties, MutableBlobMetadata> {
     private final IfDirectoryReturnNameStrategy ifDirectoryReturnName;
     private final Map<String, PublicAccess> containerAcls;
  
     @Inject
     public BlobPropertiesToBlobMetadata(IfDirectoryReturnNameStrategy ifDirectoryReturnName,
              Map<String, PublicAccess> containerAcls) {
        this.ifDirectoryReturnName = checkNotNull(ifDirectoryReturnName, "ifDirectoryReturnName");
        this.containerAcls = checkNotNull(containerAcls, "containerAcls");
     }
  
     public MutableBlobMetadata apply(BlobProperties from) {
        if (from == null)
           return null;
        MutableBlobMetadata to = new MutableBlobMetadataImpl();
        HttpUtils.copy(from.getContentMetadata(), to.getContentMetadata());
        to.setUserMetadata(from.getMetadata());
        to.setETag(from.getETag());
        to.setLastModified(from.getLastModified());
        to.setName(from.getName());
        to.setContainer(from.getContainer());
        to.setUri(from.getUrl());
        try {
           PublicAccess containerAcl = containerAcls.get(from.getContainer());
           if (containerAcl != null && containerAcl != PublicAccess.PRIVATE)
              to.setPublicUri(from.getUrl());
        } catch (NullPointerException e) {
           // MapMaker cannot return null, but a call to get acls can
        }
        String directoryName = ifDirectoryReturnName.execute(to);
        if (directoryName != null) {
           to.setName(directoryName);
           to.setType(StorageType.RELATIVE_PATH);
        } else {
           to.setType(StorageType.BLOB);
        }
        return to;
     }
  }