import type { BookabilityWidener } from './bookabilityReasons';

// Config that is silently BROADER than the practice probably intended.
//
// These are NOT defects and are NOT being removed. The permissive fallbacks are exactly what lets a solo
// practitioner skip four of six configuration steps and still be bookable - removing them would make setup
// HARDER for the practices this product is aimed at. The defect is that they are invisible, so we narrate
// them and change nothing about how they behave.
//
// A widening is only worth reporting when there is something to widen TO: a one-service org offering "all
// services" has widened nothing, and saying so would be pure noise for the smallest practices.

export interface WidenerInput {
  /** Size of PractitionerRole.healthcareService. 0 the schedule modal falls back to the whole catalog. */
  practitionerOfferedServiceCount: number;
  orgCatalogSize: number;
  /** Size of HealthcareService.location. 0 "offered at all locations". */
  serviceLocationCount: number;
  orgLocationCount: number;
  /** Whether a self-bookable extension was written at ANY of the three levels. */
  selfBookableSetExplicitly: boolean;
}

export function detectWideners(input: WidenerInput): BookabilityWidener[] {
  const wideners: BookabilityWidener[] = [];

  if (input.practitionerOfferedServiceCount === 0 && input.orgCatalogSize > 1) {
    wideners.push('WIDENED_ALL_SERVICES');
  }
  if (input.serviceLocationCount === 0 && input.orgLocationCount > 1) {
    wideners.push('WIDENED_ALL_LOCATIONS');
  }
  if (!input.selfBookableSetExplicitly) {
    wideners.push('WIDENED_SELF_BOOKABLE_BY_DEFAULT');
  }

  return wideners;
}