content: /*
   * Copyright (C) 2012-2023 52°North Spatial Information Research GmbH
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 as published
   * by the Free Software Foundation.
   *
   * If the program is linked with libraries which are licensed under one of
   * the following licenses, the combination of the program with the linked
   * library is not considered a "derivative work" of the program:
   *
   *     - Apache License, version 2.0
   *     - Apache Software License, version 1.0
   *     - GNU Lesser General Public License, version 3
   *     - Mozilla Public License, versions 1.0, 1.1 and 2.0
   *     - Common Development and Distribution License (CDDL), version 1.0
   *
   * Therefore the distribution of the program linked with libraries licensed
   * under the aforementioned licenses, is permitted by the copyright holders
   * if the distribution is compliant with both the GNU General Public
   * License version 2 and the aforementioned licenses.
   *
   * This program is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
   * Public License for more details.
   */
  package org.n52.sos.ds.observation;
  
  import org.joda.time.DateTime;
  import org.joda.time.DateTimeZone;
  import org.n52.series.db.beans.DataEntity;
  import org.n52.series.db.beans.DatasetEntity;
  import org.n52.shetland.ogc.gml.time.Time;
  import org.n52.shetland.ogc.gml.time.TimeInstant;
  import org.n52.shetland.ogc.gml.time.TimePeriod;
  
  import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
  
  @SuppressFBWarnings({"EI_EXPOSE_REP2"})
  public class PhenomenonTimeCreator {
  
      private DataEntity hObservation;
      private DatasetEntity hSeries;
  
      public PhenomenonTimeCreator(DataEntity hObservation) {
          this.hObservation = hObservation;
      }
  
      public PhenomenonTimeCreator(DatasetEntity hSeries) {
          this.hSeries = hSeries;
      }
  
      public Time create() {
          if (hObservation != null) {
              return createFromObservation();
          } else if (hSeries != null && hSeries.isSetFirstValueAt() && hSeries.isSetLastValueAt()) {
              return createFromSeries();
          }
          return null;
      }
  
      private Time createFromObservation() {
          // create time element
          final DateTime phenStartTime = new DateTime(hObservation.getSamplingTimeStart(), DateTimeZone.UTC);
          DateTime phenEndTime;
          if (hObservation.getSamplingTimeEnd() != null) {
              phenEndTime = new DateTime(hObservation.getSamplingTimeEnd(), DateTimeZone.UTC);
          } else {
              phenEndTime = phenStartTime;
          }
          return createTime(phenStartTime, phenEndTime);
      }
  
      private Time createFromSeries() {
          // create time element
          final DateTime phenStartTime = new DateTime(hSeries.getFirstValueAt(), DateTimeZone.UTC);
          final DateTime phenEndTime = new DateTime(hSeries.getLastValueAt(), DateTimeZone.UTC);
          return createTime(phenStartTime, phenEndTime);
      }
  
      /**
       * Create {@link Time} from {@link DateTime}s
       *
       * @param start
       *            Start {@link DateTime}
       * @param end
       *            End {@link DateTime}
       * @return Resulting {@link Time}
       */
      protected Time createTime(DateTime start, DateTime end) {
          if (start.equals(end)) {
              return new TimeInstant(start);
          } else {
              return new TimePeriod(start, end);
          }
      }
  
  }
  