/*
    * Copyright 2015 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.ihe.hl7v2.audit.iti8;
  
  import ca.uhn.hl7v2.model.Message;
  import org.openehealth.ipf.commons.audit.AuditContext;
  import org.openehealth.ipf.commons.audit.AuditException;
  import org.openehealth.ipf.commons.audit.codes.EventActionCode;
  import org.openehealth.ipf.commons.audit.model.AuditMessage;
  import org.openehealth.ipf.commons.ihe.core.atna.AuditStrategySupport;
  import org.openehealth.ipf.commons.ihe.core.atna.event.PatientRecordEventBuilder;
  import org.openehealth.ipf.commons.ihe.hl7v2.audit.FeedAuditDataset;
  import org.openehealth.ipf.commons.ihe.hl7v2.audit.codes.MllpEventTypeCode;
  
  import java.util.Map;
  
  public class Iti8AuditStrategy extends AuditStrategySupport<FeedAuditDataset> {
  
      public Iti8AuditStrategy(boolean serverSide) {
          super(serverSide);
      }
  
      @Override
      public FeedAuditDataset enrichAuditDatasetFromRequest(FeedAuditDataset auditDataset, Object msg, Map<String, Object> parameters) {
          Iti8AuditStrategyUtils.enrichAuditDatasetFromRequest(auditDataset, (Message) msg);
          return auditDataset;
      }
  
      @Override
      public FeedAuditDataset createAuditDataset() {
          return new FeedAuditDataset(isServerSide());
      }
  
      @Override
      public AuditMessage[] makeAuditMessage(AuditContext auditContext, FeedAuditDataset auditDataset) {
          switch (auditDataset.getMessageType()) {
              case "A01":
              case "A04":
              case "A05":
                  return new AuditMessage[]{
                          patientRecordAuditMessage(auditContext,auditDataset, EventActionCode.Create, true)
                  };
              case "A08":
                  return new AuditMessage[]{
                          patientRecordAuditMessage(auditContext,auditDataset, EventActionCode.Update, true)
                  };
              case "A40":
                  return new AuditMessage[]{
                          patientRecordAuditMessage(auditContext,auditDataset, EventActionCode.Delete, false),
                          patientRecordAuditMessage(auditContext,auditDataset, EventActionCode.Update, true)
                  };
              default:
                  throw new AuditException("Cannot create audit message for event " + auditDataset.getMessageType());
          }
  
      }
  
      protected AuditMessage patientRecordAuditMessage(AuditContext auditContext,
                                                       final FeedAuditDataset auditDataset,
                                                       EventActionCode eventActionCode,
                                                       boolean newPatientId) {
          return new PatientRecordEventBuilder<>(auditContext, auditDataset, eventActionCode, MllpEventTypeCode.PatientIdentityFeed)
  
                  // Type=MSH-10 (the literal string), Value=the value of MSH-10 (from the message content, base64 encoded)
                  .addPatients(
                          "MSH-10", auditDataset.getMessageControlId(),
                          newPatientId ? auditDataset.getPatientId() : auditDataset.getOldPatientId())
                  .getMessage();
      }
  }