// Map of all 24 supported languages from backend (apps.marriage.translation_utils.LANGUAGE_MAP)
export const LANGUAGE_MAP = {
  ar: "Arabic",
  az: "Azerbaijani",
  bn: "Bengali",
  zh: "Chinese",
  da: "Danish",
  de: "German",
  en: "English",
  es: "Spanish",
  fa: "Persian (Farsi)",
  fr: "French",
  gu: "Gujarati",
  ha: "Hausa",
  he: "Hebrew",
  hi: "Hindi",
  id: "Indonesian",
  ks: "Kashmiri",
  pt: "Portuguese",
  ru: "Russian",
  sw: "Swahili",
  tg: "Tajik",
  tr: "Turkish",
  ul: "Urdu Roman (Latin)",
  ur: "Urdu",
  uz: "Uzbek",
} as const;

export type LanguageCode = keyof typeof LANGUAGE_MAP;

export const locales = Object.keys(LANGUAGE_MAP) as LanguageCode[];

export type Locale = string;

export const defaultLocale: Locale = "en";

export const localeLabels: Record<string, string> = {
  ...LANGUAGE_MAP,
  fa: "فارسی",
};

export const rtlLanguages = ["ar", "fa", "he", "ks", "ur"];

export const localeDirections: Record<string, "ltr" | "rtl"> = Object.keys(
  LANGUAGE_MAP,
).reduce(
  (acc, code) => {
    acc[code] = rtlLanguages.includes(code) ? "rtl" : "ltr";
    return acc;
  },
  {} as Record<string, "ltr" | "rtl">,
);

export function isLocale(value: string | undefined): value is Locale {
  return Boolean(value && value in LANGUAGE_MAP);
}

export function stripLocale(pathname: string) {
  const segments = pathname.split("/");
  return isLocale(segments[1]) ? `/${segments.slice(2).join("/")}` : pathname;
}

export function localizePath(pathname: string, locale: Locale) {
  const normalizedPath = stripLocale(pathname);
  const suffix = normalizedPath === "/" ? "" : normalizedPath;

  return `/${locale}${suffix}`;
}