/*
    * Copyright 2018 the original author or authors.
    *
    *  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 org.openehealth.ipf.commons.audit.event;
  
  import org.openehealth.ipf.commons.audit.AuditException;
  import org.openehealth.ipf.commons.audit.codes.*;
  import org.openehealth.ipf.commons.audit.types.EventType;
  import org.openehealth.ipf.commons.audit.types.PurposeOfUse;
  
  import java.util.Collections;
  
  /**
   * Builds an Audit Event representing a DICOM Instances Accessed event as specified in
   * http://dicom.nema.org/medical/dicom/current/output/html/part15.html#sect_A.5.3.6
   * <p>
   * This message describes the event of DICOM SOP Instances being viewed, utilized, updated,
   * or deleted. This message shall only include information about a single patient and can be used
   * to summarize all activity for several studies for that patient.
   * This message records the studies to which the instances belong, not the individual instances.
   * </p>
   * <p>
   * If all instances within a study are deleted, then {@link DicomStudyDeletedBuilder} shall be used
   * </p>
   *
   * @author Christian Ohr
   * @since 3.5
   */
  public class DicomInstancesAccessedBuilder extends BaseAuditMessageBuilder<DicomInstancesAccessedBuilder> {
  
      public DicomInstancesAccessedBuilder(EventOutcomeIndicator outcome,
                                           String eventOutcomeDescription,
                                           EventActionCode eventActionCode,
                                           EventType eventType,
                                           PurposeOfUse... purposesOfUse) {
          super();
          setEventIdentification(outcome,
                  eventOutcomeDescription,
                  eventActionCode,
                  EventIdCode.DICOMInstancesAccessed,
                  eventType,
                  purposesOfUse
          );
      }
  
      /**
       * @param patientId   patient ID
       * @param patientName patient name
       * @return this
       */
      public DicomInstancesAccessedBuilder setPatientParticipantObject(String patientId, String patientName) {
          if (patientId != null) {
              addPatientParticipantObject(patientId, patientName, Collections.emptyList(), null);
          }
          return self();
      }
  
      @Override
      public void validate() {
          super.validate();
          int participants = getMessage().getActiveParticipants().size();
          if (participants < 1 || participants > 2) {
              throw new AuditException("Must have one or two ActiveParticipants");
          }
          if (getMessage().findParticipantObjectIdentifications(poi -> poi.getParticipantObjectIDTypeCode() == ParticipantObjectIdTypeCode.StudyInstanceUID).isEmpty()) {
              throw new AuditException("Must have one or more ParticipantObjectIdentification with ParticipantObjectIDTypeCode StudyInstanceUID");
          }
          if (getMessage().findParticipantObjectIdentifications(poi -> poi.getParticipantObjectIDTypeCode() == ParticipantObjectIdTypeCode.PatientNumber).size() != 1) {
              throw new AuditException("Must one ParticipantObjectIdentification with ParticipantObjectIDTypeCode PatientNumber");
          }
      }
  }