martials.no/src/utils/linking.ts

import type { AvailableLanguageTag } from "@/paraglide/runtime.js"
import type { AbsolutePathname } from "@/types/types.ts"

interface TranslatedPathnames {
  nb: AbsolutePathname
  en: `/en${AbsolutePathname}`
}

export type NavLink = "/" | "/contact" | "/projects" | "/links" | "/hardware"

const paths: Set<NavLink> = new Set([
  "/",
  "/contact",
  "/projects",
  "/links",
  "/hardware"
])

/**
 * Defines the localized pathnames for the site.
 * The key must be used to navigate to the correct path.
 * The value is the path that will be used for the given locale.
 *
 * @see https://inlang.com/m/iljlwzfs/paraglide-astro-i18n
 */
const pathnames: Record<AbsolutePathname, TranslatedPathnames> = {}
for (const path of paths) {
  pathnames[path] = {
    nb: path,
    en: `/en${path}`
  }
}

export function localizePathname(
  pathname: NavLink,
  locale: AvailableLanguageTag
) {
  if (pathnames[pathname]) {
    return pathnames[pathname][locale]
  }
  return pathname
}

export function resolvePathname(pathname: string): AbsolutePathname {
  if (pathname.startsWith("/en")) {
    return pathname.slice(3) as AbsolutePathname
  }
  return pathname as AbsolutePathname
}