import type { Organization } from 'fhir/r4';

export const ORGANIZATION_PATIENT_PORTAL_URL_EXTENSION_URL =
  'https://akashichealthrecords.com/fhir/StructureDefinition/organization-patient-portal-url';

export const getPatientPortalUrl = (
  organization?: Organization | null,
): string | undefined => {
  const ext = organization?.extension?.find(
    (e) => e.url === ORGANIZATION_PATIENT_PORTAL_URL_EXTENSION_URL,
  );
  return ext?.valueUrl ?? ext?.valueString;
};

export const ORGANIZATION_HOSTED_PATIENT_PORTAL_URL_EXTENSION_URL =
  'https://akashichealthrecords.com/fhir/StructureDefinition/organization-hosted-patient-portal-url';

// The hosted address the server resolved for a practice with no stored portal page; never stored itself.
export const getHostedPatientPortalUrl = (
  organization?: Organization | null,
): string | undefined =>
  organization?.extension?.find((e) => e.url === ORGANIZATION_HOSTED_PATIENT_PORTAL_URL_EXTENSION_URL)?.valueUrl;

// Immutably set/clear the portal-url extension, preserving every other extension.
export const setPatientPortalUrl = (
  organization: Organization,
  url: string,
): Organization => {
  const others = (organization.extension || []).filter(
    (e) => e.url !== ORGANIZATION_PATIENT_PORTAL_URL_EXTENSION_URL,
  );
  const trimmed = url.trim();
  const extension = trimmed
    ? [...others, { url: ORGANIZATION_PATIENT_PORTAL_URL_EXTENSION_URL, valueUrl: trimmed }]
    : others;
  return { ...organization, extension };
};