yunohost-admin/app/src/i18n/helpers.ts
2024-08-13 11:52:06 +02:00

82 lines
2.5 KiB
TypeScript

import i18n from '@/i18n'
import { nextTick } from 'vue'
import supportedLocales, {
isSupportedLocale,
type SupportedLocales,
} from '@/i18n/supportedLocales'
export let dateFnsLocale: any
/**
* Returns the first two supported locales that can be found in the `localStorage` or
* in the user browser settings.
*/
export function getDefaultLocales() {
const navigatorLocales = navigator.languages || [navigator.language]
const defaultLocales: SupportedLocales[] = []
for (const locale of navigatorLocales) {
if (isSupportedLocale(locale) && !defaultLocales.includes(locale)) {
defaultLocales.push(locale)
} else {
const lang = locale.split('-')[0]
if (isSupportedLocale(lang) && !defaultLocales.includes(lang)) {
defaultLocales.push(lang)
}
}
if (defaultLocales.length === 2) break
}
return defaultLocales as [SupportedLocales, SupportedLocales]
}
export async function setI18nLocale(locale: SupportedLocales) {
if (!i18n.global.availableLocales.includes(locale)) {
await loadLocaleMessages(locale)
// also query/set the date-fns locale object for time translation
await loadDateFnsLocale(locale)
}
// Preload 'en' locales as it is the hard fallback
if (locale !== 'en' && !i18n.global.availableLocales.includes('en')) {
loadLocaleMessages('en')
}
i18n.global.locale.value = locale
document.querySelector('html')!.setAttribute('lang', locale)
// FIXME can't currently change document direction easily since bootstrap still doesn't handle rtl.
// document.dir = locale === 'ar' ? 'rtl' : 'ltr'
}
export async function setI18nFallbackLocale(locale: SupportedLocales) {
if (!i18n.global.availableLocales.includes(locale)) {
await loadLocaleMessages(locale)
}
i18n.global.fallbackLocale.value = [locale, 'en']
}
/**
* Loads a translation file and adds its content to the i18n plugin `messages`.
*
* @return Promise that resolve the given locale string
*/
export async function loadLocaleMessages(locale: SupportedLocales) {
// load locale messages with dynamic import
const messages = await import(`./locales/${locale}.json`)
// set locale and locale message
i18n.global.setLocaleMessage(locale, messages)
return nextTick()
}
/**
* Loads a date-fns locale object
*/
async function loadDateFnsLocale(locale: SupportedLocales) {
const dateFnsLocaleName = supportedLocales[locale].dateFnsLocale ?? locale
dateFnsLocale = (
await import(`../../node_modules/date-fns/locale/${dateFnsLocaleName}.mjs`)
).default
}