
package org.jclouds.rackspace.cloudloadbalancers.v1.functions;

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

import java.util.Map;

import javax.inject.Inject;

import org.jclouds.http.HttpRequest;
import org.jclouds.http.HttpResponse;
import org.jclouds.http.HttpResponseException;
import org.jclouds.http.functions.ParseJson;
import org.jclouds.rest.InvocationContext;

import com.google.common.base.Function;
import com.google.common.collect.Iterables;

public class ParseNestedBoolean implements Function<HttpResponse, Boolean>, InvocationContext<ParseNestedBoolean> {

   private final ParseJson<Map<String, Map<String, Boolean>>> json;

   @Inject
   ParseNestedBoolean(ParseJson<Map<String, Map<String, Boolean>>> json) {
      this.json = checkNotNull(json, "json");
   }

   @Override
   public Boolean apply(HttpResponse response) {
      Map<String, Map<String, Boolean>> map = json.apply(response);

      if (map == null || map.isEmpty())
         throw new HttpResponseException("Unexpected JSON format returned.", null, response);

      return Iterables.get(Iterables.get(map.values(), 0).values(), 0);
   }

   @Override
   public ParseNestedBoolean setContext(HttpRequest request) {
      return this;
   }
}
