65 lines
2.5 KiB
JavaScript
65 lines
2.5 KiB
JavaScript
const createError = require('http-errors');
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const config = require('../config');
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const { getBusToken } = require('../utils/busAuth');
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const { findPatient } = require('../services/patient');
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const { findDocumentReferenceByPatient } = require('../services/documentReference');
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const NATIONAL_ID_SYSTEM = 'https://federador.msal.gob.ar/patient-id';
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/**
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* Extracts the Federador national identifier from a Patient resource.
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*/
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function extractNationalIdentifier(patient) {
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const identifiers = Array.isArray(patient.identifier) ? patient.identifier : [];
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return identifiers.find(id => id.system === NATIONAL_ID_SYSTEM) || null;
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}
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/**
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* ITI-67: Find Document References (MHD)
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*
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* GET /fhir/DocumentReference?subject=:localId
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* GET /fhir/DocumentReference?patient.identifier=:localId
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*
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* Flow:
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* 1. Fetch the Patient from the Bus by local ID to obtain the national identifier.
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* 2. Search DocumentReferences in the Bus by that national identifier.
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* 3. Return the resulting Bundle.
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*
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* Required query parameter (one of):
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* subject — local Patient ID in the Bus.
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* patient.identifier — same semantics, alternate FHIR parameter name.
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*/
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async function listDocumentReference(req, res, next) {
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try {
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const localPatientIdentifier = req.query.subject ?? req.query['patient.identifier'];
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if (!localPatientIdentifier) {
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throw createError(400, 'Missing required query parameter: subject or patient.identifier');
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}
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const token = await getBusToken(
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config.bus.url,
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config.bus.jwtSecret,
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config.bus.issuer,
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[
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config.bus.mpiScope,
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config.bus.documentRegistryScope
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].join(',')
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);
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// 1. Obtengo el identificador nacional del paciente en forma de referencia
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const patientSearchset = await findPatient(token, { identifier: localPatientIdentifier });
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if (!patientSearchset) {
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throw createError(422, 'Could not resolve national identifier for the given patient');
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}
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const patientNationalId = patientSearchset.entry[0].fullUrl
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// 2. Obtengo el listado de entradas del indice de atenciones asociadada al id de paciente.
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const documentReferenceSearchset = await findDocumentReferenceByPatient(token, patientNationalId)
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res.status(200).json(documentReferenceSearchset);
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} catch (err) {
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next(err);
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}
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}
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module.exports = { listDocumentReference };
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