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

export type ClinicalTier = 'provider' | 'support';

/**
 * Roles whose day is rooming/prep/assisting a provider's visit (the "rooms & preps" tier). Every OTHER
 * catalog role - and any custom role - is 'provider' (runs-visits). Note the split WITHIN the nursing
 * discipline: RN/LPN/LVN/CNA are support; NP/CNM/CRNA/PA run visits (not listed here). Approved 2026-07-20.
 */
export const ROOMS_AND_PREPS_ROLE_CODES = new Set<string>([
  'registered-nurse', 'licensed-practical-nurse', 'licensed-vocational-nurse', 'certified-nursing-assistant',
  'medical-assistant',
  'dental-hygienist', 'dental-assistant',
  'ophthalmic-technician', 'optician',
  'chiropractic-assistant', 'physical-therapy-assistant', 'occupational-therapy-assistant',
  'behavioral-health-technician', 'pharmacy-technician',
  'phlebotomist', 'surgical-technician', 'radiology-professional', 'laboratory-professional', 'medical-scribe',
]);

/** The overview tier for a user's PRIMARY role coding. Unknown/custom/undefined 'provider'. */
export const roleTier = (coding?: Coding): ClinicalTier =>
  coding?.code && ROOMS_AND_PREPS_ROLE_CODES.has(coding.code) ? 'support' : 'provider';