import { STRINGS, type Strings } from '../i18n/strings'

export type Locale = 'it' | 'en'

/**
 * Site language, persisted in a cookie so SSR renders the right language on
 * the first request. `t(key)` reads the current locale's UI string.
 */
export function useLocale() {
  const locale = useCookie<Locale>('lang', { default: () => 'it', sameSite: 'lax' })

  function setLocale(value: Locale) {
    locale.value = value
  }

  function t<K extends keyof Strings>(key: K): Strings[K] {
    return STRINGS[locale.value][key]
  }

  return { locale, setLocale, t }
}