/*
 * 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 Transferred event as specified in
 * http://dicom.nema.org/medical/dicom/current/output/html/part15.html#sect_A.5.3.7
 * <p>
 * This message describes the event of the completion of transferring DICOM SOP Instances
 * between two Application Entities. This message may only include information about a
 * single patient.
 * </p>
 * <p>
 * This message may have been preceded by a {@link BeginTransferringDicomInstancesBuilder} message.
 * The Begin Transferring Instances message conveys the intent to store SOP Instances,
 * while the Instances Transferred message records the completion of the transfer.
 * Any disagreement between the two messages might indicate a potential security breach.
 * </p>
 *
 * @author Christian Ohr
 * @since 3.5
 */
public class DicomInstancesTransferredBuilder extends BaseAuditMessageBuilder<DicomInstancesTransferredBuilder> {

    public DicomInstancesTransferredBuilder(EventOutcomeIndicator outcome,
                                            String eventOutcomeDescription,
                                            EventActionCode eventActionCode,
                                            EventType eventType,
                                            PurposeOfUse... purposesOfUse) {
        super();
        setEventIdentification(outcome,
                eventOutcomeDescription,
                eventActionCode,
                EventIdCode.DICOMInstancesTransferred,
                eventType,
                purposesOfUse
        );
    }

    /**
     * @param userId          The identity of the process sending the data
     * @param altUserId       Alternate UserID
     * @param userName        UserName
     * @param networkId       Network Access Point ID
     * @param userIsRequestor Whether the destination participant represents the requestor (i.e. pull request)
     * @return this
     */
    public DicomInstancesTransferredBuilder setSendingProcessParticipant(String userId,
                                                                         String altUserId,
                                                                         String userName,
                                                                         String networkId,
                                                                         boolean userIsRequestor) {
        return addSourceActiveParticipant(userId, altUserId, userName, networkId, userIsRequestor);
    }

    /**
     * @param userId          The identity of the process receiving the data
     * @param altUserId       Alternate UserID
     * @param userName        UserName
     * @param networkId       Network Access Point ID
     * @param userIsRequestor Whether the destination participant represents the requestor (i.e. pull request)
     * @return this
     */
    public DicomInstancesTransferredBuilder setReceivingProcessParticipant(String userId,
                                                                           String altUserId,
                                                                           String userName,
                                                                           String networkId,
                                                                           boolean userIsRequestor) {
        return addDestinationActiveParticipant(userId, altUserId, userName, networkId, userIsRequestor);
    }

    /**
     * @param patientId   patient ID
     * @param patientName patient name
     * @return this
     */
    public DicomInstancesTransferredBuilder setPatientParticipantObject(String patientId, String patientName) {
        if (patientId != null) {
            addPatientParticipantObject(patientId, patientName, Collections.emptyList(), null);
        }
        return self();
    }

    @Override
    public void validate() {
        super.validate();
        if (getMessage().findActiveParticipants(ap -> ap.getRoleIDCodes().contains(ActiveParticipantRoleIdCode.Source)).size() != 1) {
            throw new AuditException("Must have one ActiveParticipant with RoleIDCode Source");
        }
        if (getMessage().findActiveParticipants(ap -> ap.getRoleIDCodes().contains(ActiveParticipantRoleIdCode.Destination)).size() != 1) {
            throw new AuditException("Must have one ActiveParticipant with RoleIDCode Destination");
        }
        if (getMessage().findParticipantObjectIdentifications(poi -> poi.getParticipantObjectIDTypeCode() == ParticipantObjectIdTypeCode.PatientNumber).size() != 1) {
            throw new AuditException("Must one ParticipantObjectIdentification with ParticipantObjectIDTypeCode PatientNumber");
        }
        if (getMessage().findParticipantObjectIdentifications(poi -> poi.getParticipantObjectIDTypeCode() == ParticipantObjectIdTypeCode.StudyInstanceUID).isEmpty()) {
            throw new AuditException("Must have one or more ParticipantObjectIdentification with ParticipantObjectIDTypeCode StudyInstanceUID");
        }
    }
}
