/**
    * 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.trmk.vcloud_0_8.config;
  
  import static com.google.common.base.Preconditions.checkNotNull;
  import static com.google.common.base.Preconditions.checkState;
  import static org.jclouds.trmk.vcloud_0_8.reference.VCloudConstants.PROPERTY_VCLOUD_DEFAULT_VDC;
  
  import java.util.Map;
  
  import javax.inject.Inject;
  import javax.inject.Singleton;
  
  import org.jclouds.config.ValueOfConfigurationKeyOrNull;
  import org.jclouds.trmk.vcloud_0_8.domain.Org;
  import org.jclouds.trmk.vcloud_0_8.domain.ReferenceType;
  import org.jclouds.trmk.vcloud_0_8.endpoints.VDC;
  import org.jclouds.trmk.vcloud_0_8.suppliers.OnlyReferenceTypeFirstWithNameMatchingConfigurationKeyOrDefault;
  
  import com.google.common.base.Function;
  import com.google.common.base.Predicate;
  import com.google.common.base.Supplier;
  
  /**
   * 
   * @author Adrian Cole
   */
  @Singleton
  public class DefaultVDCForOrg implements Function<ReferenceType, ReferenceType> {
     private final OnlyReferenceTypeFirstWithNameMatchingConfigurationKeyOrDefault selector;
     private final Supplier<Map<String, ? extends Org>> nameToOrg;
  
     @Inject
     public DefaultVDCForOrg(ValueOfConfigurationKeyOrNull valueOfConfigurationKeyOrNull,
           @VDC Predicate<ReferenceType> defaultSelector, Supplier<Map<String, ? extends Org>> nameToOrg) {
        this.selector = new OnlyReferenceTypeFirstWithNameMatchingConfigurationKeyOrDefault(checkNotNull(
              valueOfConfigurationKeyOrNull, "valueOfConfigurationKeyOrNull"), PROPERTY_VCLOUD_DEFAULT_VDC, checkNotNull(
              defaultSelector, "defaultSelector"));
        this.nameToOrg = checkNotNull(nameToOrg, "nameToOrg");
     }
  
     @Override
     public ReferenceType apply(ReferenceType defaultOrg) {
        org.jclouds.trmk.vcloud_0_8.domain.Org org = nameToOrg.get().get(defaultOrg.getName());
        checkState(org != null, "could not retrieve Org at %s", defaultOrg);
        return selector.apply(org.getVDCs().values());
     }
  
  }