/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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.chef.functions;

import java.util.Map;
import java.util.Set;

import javax.inject.Inject;
import javax.inject.Singleton;

import org.jclouds.chef.domain.CookbookDefinition;
import org.jclouds.http.HttpResponse;
import org.jclouds.http.functions.ParseJson;

import com.google.common.base.Function;

/**
 * Parses a cookbook definition from a Json response, assuming a Chef Server >=
 * 0.10.8.
 */
@Singleton
public class ParseCookbookNamesFromJson implements Function<HttpResponse, Set<String>> {

   /** Parser for responses from chef server >= 0.10.8 */
   private final ParseJson<Map<String, CookbookDefinition>> parser;

   @Inject
   ParseCookbookNamesFromJson(ParseJson<Map<String, CookbookDefinition>> parser) {
      this.parser = parser;
   }

   @Override
   public Set<String> apply(HttpResponse response) {
      return parser.apply(response).keySet();
   }
}
