schon/storefront/stores/language.ts

import type {ILanguage} from "~/types";
import {useAppConfig} from "~/composables/config";
import {DEFAULT_LOCALE} from "~/config/constants";

export const useLanguageStore = defineStore('language', () => {
  const { COOKIES_LOCALE_KEY } = useAppConfig();

  const cookieLocale = useCookie(
      COOKIES_LOCALE_KEY,
      {
        default: () => DEFAULT_LOCALE,
        path: '/'
      }
  );

  const localeFromCookies = computed(() => cookieLocale.value);

  const languages = ref<ILanguage[] | null>(null);
  const setLanguages = (payload: ILanguage[]) => {
    languages.value = payload
  };

  const currentLocale = ref<ILanguage | null>(null);
  const setCurrentLocale = (payload: ILanguage | null) => {
    currentLocale.value = payload
  };

  watch(
    () => localeFromCookies.value,
    () => {
      setCurrentLocale(languages.value?.find(l => l.code === localeFromCookies.value) as ILanguage)
    }
  )

  return {
    languages,
    setLanguages,
    currentLocale,
    setCurrentLocale
  }
})