/**
 * The company document set a company resolves to — one of three, never a
 * combination: a co-operative union or farm uploads its own papers INSTEAD of
 * its nationality's (it holds no business licence), and is always Ethiopian.
 *
 * Mirrors `CompaniesService.documentSettingCodeFor` on the API; prefer the
 * server-resolved `documentSettingCode` from onboarding requirements where one
 * is available, and use this where only the company is at hand.
 */
export function documentSettingCode(
  nationality: string | null | undefined,
  cooperative?: boolean | null,
): string {
  if (cooperative) return "company_onboarding_documents_cooperative";
  return nationality === "foreign"
    ? "company_onboarding_documents_foreign"
    : "company_onboarding_documents_ethiopian";
}