143 lines
3.8 KiB
TypeScript
143 lines
3.8 KiB
TypeScript
import Vue from "vue";
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import VueI18n from "vue-i18n";
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import { DateFnsPlugin } from "@/plugins/dateFns";
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import en from "../i18n/en_US.json";
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import langs from "../i18n/langs.json";
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import { getLocaleData } from "./auth";
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import pluralizationRules from "../i18n/pluralRules";
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const DEFAULT_LOCALE = "en_US";
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const localeInLocalStorage = getLocaleData();
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export const AVAILABLE_LANGUAGES = Object.keys(langs);
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console.debug("localeInLocalStorage", localeInLocalStorage);
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let language =
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localeInLocalStorage ||
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(document.documentElement.getAttribute("lang") as string);
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console.debug(
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"localeInLocalStorage or fallback to lang html attribute",
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language
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);
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language =
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language ||
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((window.navigator as any).userLanguage || window.navigator.language).replace(
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/-/,
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"_"
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);
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console.debug("language or fallback to window.navigator language", language);
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export const locale =
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language && Object.prototype.hasOwnProperty.call(langs, language)
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? language
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: language.split("-")[0];
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console.debug("chosen locale", locale);
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Vue.use(VueI18n);
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export const i18n = new VueI18n({
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locale: DEFAULT_LOCALE, // set locale
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// eslint-disable-next-line @typescript-eslint/ban-ts-comment
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// @ts-ignore
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messages: en, // set locale messages
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fallbackLocale: DEFAULT_LOCALE,
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formatFallbackMessages: true,
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pluralizationRules,
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});
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console.debug("set VueI18n with default locale", DEFAULT_LOCALE);
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const loadedLanguages = [DEFAULT_LOCALE];
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function setI18nLanguage(lang: string): string {
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console.debug("setting i18n locale to", lang);
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i18n.locale = lang;
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setLanguageInDOM(lang);
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return lang;
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}
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function setLanguageInDOM(lang: string): void {
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const fixedLang = lang.replace(/_/g, "-");
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const html = document.documentElement;
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const documentLang = html.getAttribute("lang");
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if (documentLang !== fixedLang) {
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html.setAttribute("lang", fixedLang);
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}
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const direction = ["ar", "ae", "he", "fa", "ku", "ur"].includes(fixedLang)
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? "rtl"
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: "ltr";
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console.debug("setDirection with", [fixedLang, direction]);
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html.setAttribute("dir", direction);
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}
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function fileForLanguage(matches: Record<string, string>, lang: string) {
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if (Object.prototype.hasOwnProperty.call(matches, lang)) {
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return matches[lang];
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}
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return lang;
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}
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function vueI18NfileForLanguage(lang: string) {
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const matches: Record<string, string> = {
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fr: "fr_FR",
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en: "en_US",
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};
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return fileForLanguage(matches, lang);
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}
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function dateFnsfileForLanguage(lang: string) {
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const matches: Record<string, string> = {
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en_US: "en-US",
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en: "en-US",
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};
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return fileForLanguage(matches, lang);
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}
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Vue.use(DateFnsPlugin, { locale: dateFnsfileForLanguage(locale) });
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export async function loadLanguageAsync(lang: string): Promise<string> {
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// If the same language
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if (i18n.locale === lang) {
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console.debug("already using language", lang);
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return Promise.resolve(setI18nLanguage(lang));
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}
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// If the language was already loaded
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if (loadedLanguages.includes(lang)) {
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console.debug("language already loaded", lang);
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return Promise.resolve(setI18nLanguage(lang));
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}
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// If the language hasn't been loaded yet
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console.debug("loading language", lang);
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const newMessages = await import(
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/* webpackChunkName: "lang-[request]" */ `@/i18n/${vueI18NfileForLanguage(
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lang
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)}.json`
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);
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i18n.setLocaleMessage(lang, newMessages.default);
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loadedLanguages.push(lang);
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return setI18nLanguage(lang);
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}
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console.debug("loading async locale", locale);
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loadLanguageAsync(locale);
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console.debug("loaded async locale", locale);
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export function formatList(list: string[]): string {
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if (window.Intl && Intl.ListFormat) {
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const formatter = new Intl.ListFormat(undefined, {
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style: "long",
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type: "conjunction",
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});
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return formatter.format(list);
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}
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return list.join(",");
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}
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