64 lines
2.0 KiB
JavaScript
64 lines
2.0 KiB
JavaScript
import polyglotI18nProvider from 'ra-i18n-polyglot'
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import deepmerge from 'deepmerge'
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import dataProvider from '../dataProvider'
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import en from './en.json'
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import { i18nProvider } from './index'
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// Only returns current selected locale if its translations are found in localStorage
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const defaultLocale = function () {
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const locale = localStorage.getItem('locale')
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const current = JSON.parse(localStorage.getItem('translation'))
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if (current && current.id === locale) {
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// Asynchronously reload the translation from the server
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retrieveTranslation(locale).then(() => {
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i18nProvider.changeLocale(locale)
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})
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return locale
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}
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return 'en'
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}
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export function retrieveTranslation(locale) {
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return dataProvider.getOne('translation', { id: locale }).then((res) => {
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localStorage.setItem('translation', JSON.stringify(res.data))
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return prepareLanguage(JSON.parse(res.data.data))
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})
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}
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const removeEmpty = (obj) => {
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for (let k in obj) {
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if (obj.hasOwnProperty(k) && typeof obj[k] === 'object') {
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removeEmpty(obj[k])
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} else {
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if (!obj[k]) {
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delete obj[k]
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}
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}
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}
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}
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const prepareLanguage = (lang) => {
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removeEmpty(lang)
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// Make "albumSong" and "playlistTrack" resource use the same translations as "song"
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lang.resources.albumSong = lang.resources.song
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lang.resources.playlistTrack = lang.resources.song
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// ra.boolean.null should always be empty
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lang.ra.boolean.null = ''
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// Fallback to english translations
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return deepmerge(en, lang)
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}
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export default polyglotI18nProvider((locale) => {
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// English is bundled
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if (locale === 'en') {
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return prepareLanguage(en)
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}
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// If the requested locale is in already loaded, return it
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const current = JSON.parse(localStorage.getItem('translation'))
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if (current && current.id === locale) {
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return prepareLanguage(JSON.parse(current.data))
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}
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// If not, get it from the server, and store it in localStorage
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return retrieveTranslation(locale)
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}, defaultLocale())
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