export type Locale = "en" | "fr";
export const DEFAULT_LOCALE: Locale = "en";

const dict = {
  en: {
    "nav.research": "Research",
    "nav.topics": "Topics",
    "nav.series": "Series",
    "nav.about": "About",
    "nav.methodology": "Methodology",
    "nav.infrastructure": "Infrastructure",
    "nav.transparency": "Transparency",
    "nav.admin": "Admin",
    "footer.credit": "Research computed on MacLustr — an Apple Silicon research compute infrastructure.",
    "footer.disclaimer": "AutoScholar working papers are AI-generated and not formally peer reviewed.",
    "disclosure.line": "AI-generated working paper; not formally peer reviewed.",
    byline: "AutoScholar — AI-generated research",
    "search.placeholder": "Search titles, abstracts, keywords or paper IDs",
    "search.empty": "No papers match these filters yet.",
    "library.empty": "The library is empty. Papers appear here after they pass every quality gate.",
    "theme.toggle": "Toggle colour scheme",
  },
  fr: {
    "nav.research": "Recherche",
    "nav.topics": "Thèmes",
    "nav.series": "Séries",
    "nav.about": "À propos",
    "nav.methodology": "Méthodologie",
    "nav.infrastructure": "Infrastructure",
    "nav.transparency": "Transparence",
    "nav.admin": "Admin",
    "footer.credit":
      "Recherche calculée sur MacLustr — une infrastructure de calcul de recherche Apple Silicon.",
    "footer.disclaimer":
      "Les documents de travail AutoScholar sont générés par IA et ne sont pas formellement évalués par des pairs.",
    "disclosure.line": "Document de travail généré par IA ; non évalué formellement par des pairs.",
    byline: "AutoScholar — recherche générée par IA",
    "search.placeholder": "Rechercher des titres, résumés, mots-clés ou identifiants",
    "search.empty": "Aucun document ne correspond à ces filtres.",
    "library.empty":
      "La bibliothèque est vide. Les documents apparaissent ici après avoir passé toutes les vérifications de qualité.",
    "theme.toggle": "Changer le thème",
  },
} as const;

export type Key = keyof (typeof dict)["en"];
export function t(key: Key, locale: Locale = DEFAULT_LOCALE): string {
  return dict[locale][key] ?? dict.en[key];
}