/*
    * Copyright 2015 Data Archiving and Networked Services (an institute of
    * Koninklijke Nederlandse Akademie van Wetenschappen), King's College London,
    * Georg-August-Universitaet Goettingen Stiftung Oeffentlichen Rechts
    *
    * Licensed under the EUPL, Version 1.1 or – as soon they will be approved by
    * the European Commission - subsequent versions of the EUPL (the "Licence");
    * You may not use this work except in compliance with the Licence.
    * You may obtain a copy of the Licence at:
   *
   * https://joinup.ec.europa.eu/software/page/eupl
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the Licence is distributed on an "AS IS" basis,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the Licence for the specific language governing
   * permissions and limitations under the Licence.
   */
  
  /**
   */
  package eu.ehri.project.importers.ead;
  
  import eu.ehri.project.importers.base.ItemImporter;
  import eu.ehri.project.importers.properties.XmlImportProperties;
  import eu.ehri.project.importers.util.ImportHelpers;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.util.List;
  import java.util.Map;
  
  /**
   * Handler for importing EAD files converted from the USHMM Solr index file.
   * These files were converted using the solr2ead XSLT stylesheet.
   */
  public class UshmmHandler extends EadHandler {
  
      private static final Logger logger = LoggerFactory.getLogger(UshmmHandler.class);
  
      private int count;
  
      public UshmmHandler(ItemImporter<Map<String, Object>, ?> importer) {
          super(importer, new XmlImportProperties("ushmm.properties"));
  
      }
  
      @Override
      protected void extractIdentifier(Map<String, Object> currentGraph) {
          //not all units have ids, and some have multiple, find the "irn"
          if (currentGraph.containsKey(ImportHelpers.OBJECT_IDENTIFIER)) {
              if (currentGraph.get(ImportHelpers.OBJECT_IDENTIFIER) instanceof List) {
                  logger.debug("class of identifier: " + currentGraph.get(ImportHelpers.OBJECT_IDENTIFIER).getClass());
                  List<String> identifiers = (List<String>) currentGraph.get(ImportHelpers.OBJECT_IDENTIFIER);
                  List<String> identifierType = (List<String>) currentGraph.get("objectIdentifierType");
                  for (int i = 0; i < identifiers.size(); i++) {
                      if (identifierType.get(i).equals("irn")) {
                          logger.debug("found official id: " + identifiers.get(i));
                          currentGraph.put(ImportHelpers.OBJECT_IDENTIFIER, identifiers.get(i));
                      } else {
                          logger.debug("found other form of identifier: " + identifiers.get(i));
                          addOtherIdentifier(currentGraph, identifiers.get(i));
                          //currentGraph.put("otherIdentifiers", identifiers.get(i));
                      }
                  }
                  currentGraph.remove("objectIdentifierType");
              }
          } else {
              logger.error("no unitid found, setting {}", ++count);
              currentGraph.put(ImportHelpers.OBJECT_IDENTIFIER, "ushmmID" + count);
          }
      }
  }