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

/**
 * The practice's own STAFF sign-in page, stored on the Organization beside the patient one.
 *
 * NOTHING HERE IS DERIVED FROM THE PATIENT URL, and that is the point. The staff portal is a real page
 * the practice created deliberately - its own `akashere_staff_portal` shortcode, its own WordPress page,
 * its own stored page id - and the Portal Pages screen already resolves its permalink in the same moment
 * it resolves the patient one. There is nothing to guess at; there was simply a value that never
 * travelled. String-editing the patient URL into a guess at where a practice keeps its staff page would
 * be the wrong fix, and is why this sat unbuilt as an open question.
 */
export const ORGANIZATION_STAFF_PORTAL_URL_EXTENSION_URL =
  'https://akashichealthrecords.com/fhir/StructureDefinition/organization-staff-portal-url';

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

// Immutably set/clear the staff-portal extension, preserving every other extension - including the
// PATIENT portal URL sitting directly beside it, which a naive replace would drop.
export const setStaffPortalUrl = (
  organization: Organization,
  url: string,
): Organization => {
  const others = (organization.extension || []).filter(
    (e) => e.url !== ORGANIZATION_STAFF_PORTAL_URL_EXTENSION_URL,
  );
  const trimmed = url.trim();
  const extension = trimmed
    ? [...others, { url: ORGANIZATION_STAFF_PORTAL_URL_EXTENSION_URL, valueUrl: trimmed }]
    : others;
  return { ...organization, extension };
};