NABIDH HL7 Telehealth & EMR Integration Suite

// HL7 v2.5 ADT^A04 Outpatient Registration for DHA NABIDH HIE
import { buildMSH, buildEVN, buildPID, buildPV1, buildAL1, buildZSC } from '../hl7/segments';

export function createNabidhAdtA04(patientRecord: ClinicalPatientRecord, controlId: string) {
  const segments: string[] = [];

  // MSH - Message Header (Sending Application, Facility ID, NABIDH Receiver, UTF-8)
  segments.push(buildMSH({
    eventType: 'ADT^A04^ADT_A01',
    messageControlId: controlId,
    processingId: 'P' // Production
  }));

  // EVN - Event Type
  segments.push(buildEVN('A04'));

  // PID - Patient Demographics matched with UAE Emirates ID & Local MRN
  segments.push(buildPID({
    emiratesId: patientRecord.emiratesId,
    mrn: patientRecord.medicalRecordNumber,
    familyLastName: patientRecord.lastName,
    givenFirstName: patientRecord.firstName,
    birthDate: patientRecord.dateOfBirth,
    gender: patientRecord.gender,
    mobile: patientRecord.phoneNumber
  }));

  // PV1 - Patient Visit Segment (Attending Physician DHA ID, Clinic Location)
  segments.push(buildPV1({
    patientClass: 'O', // Outpatient Encounter
    locationCode: patientRecord.facilityLocationCode,
    attendingDoctorId: patientRecord.doctorDhaLicenseNumber,
    admitDateTime: patientRecord.encounterTimestamp
  }));

  // AL1 - Standardized Allergies & Adverse Reactions
  if (patientRecord.allergies?.length) {
    patientRecord.allergies.forEach((allergy, index) => {
      segments.push(buildAL1(allergy, index + 1));
    });
  }

  // ZSC - Dubai NABIDH Mandatory Consent & VIP Protocol Directive
  segments.push(buildZSC({
    vipStatus: patientRecord.isVip ? 'Y' : 'N',
    facilityOptOut: 'N',
    globalOptOut: 'N'
  }));

  return segments.join('\r'); // Standard HL7 Carriage Return Delimiter
}