Medplum

// SPDX-FileCopyrightText: Copyright Orangebot, Inc. and Medplum contributors // SPDX-License-Identifier: Apache-2.0 import { ContentType, getStatus, isAccepted, isRedirect } from '@medplum/core'; import type { OperationOutcome } from '@medplum/fhirtypes'; import type { Response } from 'express'; import type { Result, ValidationError } from 'express-validator'; import { randomUUID } from 'node:crypto'; import { buildTracingExtension } from '../context'; export function invalidRequest(errors: Result<ValidationError>): OperationOutcome { return { resourceType: 'OperationOutcome', id: randomUUID(), issue: errors .array() .flatMap((error) => { if (error.type === 'alternative') { return error.nestedErrors; } return error; }) .map((error) => ({ severity: 'error', code: 'invalid', expression: getValidationErrorExpression(error), details: { text: error.msg }, })), }; } function getValidationErrorExpression(error: ValidationError): string[] | undefined { // ValidationError can be AlternativeValidationError | GroupedAlternativeValidationError | UnknownFieldsError | FieldValidationError if (error.type === 'field') { return [error.path]; } return undefined; } export function sendOutcome(res: Response, outcome: OperationOutcome): Response { if (isAccepted(outcome) && outcome.issue?.[0].diagnostics) { res.set('Content-Location', outcome.issue[0].diagnostics); } if (isRedirect(outcome)) { const uri = outcome.issue[0].details?.coding?.find((c) => c.system === 'urn:ietf:rfc:3986')?.code; if (uri) { res.set('Location', uri); } } return res .status(getStatus(outcome)) .type(ContentType.FHIR_JSON) .json({ ...outcome, extension: buildTracingExtension(), } as OperationOutcome); }