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/*
 * 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.rest.binders;

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

import java.util.Map;

import javax.inject.Inject;

import org.jclouds.http.HttpRequest;
import org.jclouds.rest.MapBinder;

import com.google.common.collect.ImmutableMap;
import com.google.inject.assistedinject.Assisted;

/**
 * Sometimes, cloud apis wrap requests inside an envelope. This addresses this.
 *
 * @author Adrian Cole
 */
public class BindToJsonPayloadWrappedWith implements MapBinder {

   public interface Factory {
      BindToJsonPayloadWrappedWith create(String envelope);
   }

   private final BindToJsonPayload jsonBinder;
   private final String envelope;

   @Inject
   BindToJsonPayloadWrappedWith(BindToJsonPayload jsonBinder, @Assisted String envelope) {
      this.jsonBinder = checkNotNull(jsonBinder, "jsonBinder");
      this.envelope = checkNotNull(envelope, "envelope");
   }

   @Override
   public  R bindToRequest(R request, Object payload) {
      return jsonBinder.bindToRequest(request, (Object) ImmutableMap.of(envelope, checkNotNull(payload, "payload")));
   }

   @Override
   public  R bindToRequest(R request, Map postParams) {
      return this.bindToRequest(request, (Object) postParams);
   }
}