import { isDeepStrictEqual } from 'node:util';

const TRACKED_FIELDS = [
  'code',
  'name',
  'commonName',
  'description',
  'type',
  'parent',
  'operationalArea',
  'operatorCompany',
  'informationStatus',
  'operationalStatus',
  'organizationProfile',
  'organizationMemberships',
  'externalIdentifiers',
  'sourceDocuments',
  'legalRights',
  'attributes',
  'geometry',
  'media',
  'provenance',
] as const;

export function changedSnapshotFields(
  previous: Record<string, unknown> | null,
  current: Record<string, unknown>,
): string[] {
  if (!previous) {
    return TRACKED_FIELDS.filter((field) => {
      const value = current[field];
      return value !== null && value !== undefined && !(
        Array.isArray(value) && value.length === 0
      );
    });
  }

  return TRACKED_FIELDS.filter(
    (field) => !isDeepStrictEqual(previous[field], current[field]),
  );
}