/**
 * ============LICENSE_START=======================================================
 * org.onap.aai
 * ================================================================================
 * Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
 * Copyright © 2017-2018 Amdocs
 * ================================================================================
 * 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.
 * ============LICENSE_END=========================================================
 */
package org.onap.aai.sparky.viewandinspect.task;

import java.util.Map;
import java.util.function.Supplier;

import org.onap.aai.cl.api.Logger;
import org.onap.aai.cl.eelf.LoggerFactory;
import org.onap.aai.restclient.client.OperationResult;
import org.onap.aai.sparky.dal.GizmoAdapter;
import org.onap.aai.sparky.logging.AaiUiMsgs;
import org.onap.aai.sparky.viewandinspect.entity.NodeProcessingTransaction;
import org.slf4j.MDC;

/**
 * The Class PerformNodeSelfLinkProcessingTask.
 */
public class PerformGizmoNodeSelfLinkProcessingTask implements Supplier<NodeProcessingTransaction> {

  private static final Logger logger =
      LoggerFactory.getInstance().getLogger(PerformGizmoNodeSelfLinkProcessingTask.class);

  private NodeProcessingTransaction txn;
  private GizmoAdapter gizmoAdapter;
  private Map<String, String> contextMap;

  /**
   * Instantiates a new perform node self link processing task.
   *
   * @param txn the txn
   * @param aaiProvider the aai provider
   * @param aaiConfig the aai config
   */
  /**
   * 
   * @param txn
   * @param requestParameters
   * @param aaiProvider
   * @param aaiConfig
   */
  public PerformGizmoNodeSelfLinkProcessingTask(NodeProcessingTransaction txn, String requestParameters,
      GizmoAdapter gizmoAdapter) {
    this.gizmoAdapter = gizmoAdapter;
    this.txn = txn;
    this.contextMap = MDC.getCopyOfContextMap();
  }

  /*
   * (non-Javadoc)
   * 
   * @see java.util.function.Supplier#get()
   */
  @Override
  public NodeProcessingTransaction get() {
    MDC.setContextMap(contextMap);
    OperationResult opResult = new OperationResult();
    String link = txn.getSelfLink();
    
    if (link == null) {
      opResult.setResult(500, "Aborting self-link processing because self link is null");
      txn.setOpResult(opResult);
      return txn;
    }

    /**
     * Rebuild the self link:
     *  
     * <li>build the base url with the configured scheme + authority (server:port)
     * <li>recombine baseUrl + originalEncodedLink + queryStringParameters
     * 
     */

    final String urlSchemeAndAuthority = gizmoAdapter.repairInventorySelfLink("", null);

    String parameters = txn.getRequestParameters();
    link = urlSchemeAndAuthority + link;
    
    if (parameters != null) {
      link += parameters;
    }

    if (logger.isDebugEnabled()) {
      logger.debug(AaiUiMsgs.DEBUG_GENERIC, "Collecting " + link);
    }

    try {
    	
      opResult = gizmoAdapter.queryGizmoWithRetries(link, "application/json",
          gizmoAdapter.getEndpointConfig().getNumRequestRetries());
    } catch (Exception exc) {
      opResult = new OperationResult();
      opResult.setResult(500, "Querying AAI with retry failed due to an exception.");
      logger.error(AaiUiMsgs.ERROR_AAI_QUERY_WITH_RETRY, exc.getMessage());
    }

    if (logger.isDebugEnabled()) {
      logger.debug(AaiUiMsgs.DEBUG_GENERIC, "Operation result = " + opResult.toString());
    }

    txn.setOpResult(opResult);
    return txn;

  }

}