/**
 * scripts/generate-docs/lib/i18n-types.ts
 *
 * The two languages of the docs site and the shapes that carry both.
 */
import type { LocalisedString } from './markdown-parser';

export type Lang = 'fr' | 'en';

export interface Localised {
  fr: string;
  en: string;
}

/** A frontmatter / sidebar value (one string, or `{ fr, en }`) as both languages. */
export function localise(value: LocalisedString | undefined): Localised {
  if (value == null) return { fr: '', en: '' };
  if (typeof value === 'string') return { fr: value, en: value };
  return { fr: value.fr ?? '', en: value.en ?? value.fr ?? '' };
}