import { ConflictException } from '@nestjs/common';
import type { RestrictionCheck } from '../compliance/restricted-zone';

/** 409 when the colony or an apiary changed between the unlocked read and the lock. */
export function apiaryChangedMeanwhile(): ConflictException {
  return new ConflictException(
    'Der Stand wurde gerade geändert. Bitte neu laden.',
  );
}

export const NOT_OVERRIDDEN: RestrictionCheck = {
  overridden: false,
  restrictionIds: [],
};

/**
 * The audit trace of an override: only the reason and the restriction ids,
 * and only when an active restriction was really overridden. Spread into the
 * audit entry's afterData - never into data written to the colony.
 */
export function overrideTrace(
  check: RestrictionCheck,
  reason: string | null | undefined,
): { restrictionOverride?: { reason: string; restrictionIds: string[] } } {
  return check.overridden && reason
    ? { restrictionOverride: { reason, restrictionIds: check.restrictionIds } }
    : {};
}

/** The apiary-history note: the override in front of an existing note. */
export function overrideNote(
  check: RestrictionCheck,
  reason: string | null | undefined,
  note: string | undefined,
): string | undefined {
  if (!check.overridden || !reason) {
    return note;
  }
  const prefix = `Ausnahme Sperrbezirk: ${reason}`;
  return note ? `${prefix}\n${note}` : prefix;
}