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/*
   Copyright (c) 2014 LinkedIn Corp.

   Licensed 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 com.linkedin.restli.test.util;


import com.linkedin.data.template.RecordTemplate;
import com.linkedin.r2.RemoteInvocationException;
import com.linkedin.restli.client.BatchCreateIdRequest;
import com.linkedin.restli.client.BatchCreateIdRequestBuilder;
import com.linkedin.restli.client.BatchCreateRequest;
import com.linkedin.restli.client.BatchCreateRequestBuilder;
import com.linkedin.restli.client.Response;
import com.linkedin.restli.client.RestClient;
import com.linkedin.restli.common.BatchCreateIdResponse;
import com.linkedin.restli.common.CollectionResponse;
import com.linkedin.restli.common.CreateIdStatus;
import com.linkedin.restli.common.CreateStatus;

import java.util.ArrayList;
import java.util.List;


/**
 * Functions for dealing with differences between v1 and v2 request builders batchCreate.
 * @author Moira Tagle
 */
public class BatchCreateHelper
{
  public static  List> batchCreate(RestClient restClient, RootBuilderWrapper  builders, List entities)
    throws RemoteInvocationException
  {
    RootBuilderWrapper.MethodBuilderWrapper> batchCreateWrapper = builders.batchCreate();
    if (batchCreateWrapper.isRestLi2Builder())
    {
      Object obj = batchCreateWrapper.getBuilder();
      @SuppressWarnings("unchecked")
      BatchCreateIdRequestBuilder builder = (BatchCreateIdRequestBuilder) obj;
      return batchCreateNewBuilders(restClient, builder, entities);
    }
    else
    {
      @SuppressWarnings("unchecked")
      BatchCreateRequestBuilder builder = (BatchCreateRequestBuilder) batchCreateWrapper.getBuilder();
      return batchCreateOldBuilders(restClient, builder, entities);
    }
  }

  private static  List> batchCreateOldBuilders(RestClient restClient, BatchCreateRequestBuilder builder, List entities)
    throws RemoteInvocationException
  {
    BatchCreateRequest request = builder.inputs(entities).build();
    Response> response = restClient.sendRequest(request).getResponse();
    List elements = response.getEntity().getElements();
    List> result = new ArrayList>(elements.size());
    for (CreateStatus status : elements)
    {
      @SuppressWarnings("unchecked")
      CreateIdStatus createIdStatus = (CreateIdStatus) status;
      result.add(createIdStatus);
    }
    return result;
  }

  private static  List> batchCreateNewBuilders(RestClient restClient,  BatchCreateIdRequestBuilder builder, List entities)
    throws RemoteInvocationException
  {
    BatchCreateIdRequest request = builder.inputs(entities).build();
    Response> response = restClient.sendRequest(request).getResponse();
    return response.getEntity().getElements();
  }
}