81 lines
2.2 KiB
JavaScript
81 lines
2.2 KiB
JavaScript
const _ = require('lodash')
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const dotize = require('dotize')
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const i18nMW = require('i18next-express-middleware')
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const i18next = require('i18next')
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const Promise = require('bluebird')
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/* global WIKI */
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module.exports = {
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engine: null,
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namespaces: [],
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init() {
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this.namespaces = WIKI.data.localeNamespaces
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this.engine = i18next
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this.engine.init({
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load: 'languageOnly',
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ns: this.namespaces,
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defaultNS: 'common',
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saveMissing: false,
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lng: WIKI.config.lang.code,
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fallbackLng: 'en'
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})
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// Load fallback defaults
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const enFallback = require('../locales/default.json')
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if (_.isPlainObject(enFallback)) {
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_.forOwn(enFallback, (data, ns) => {
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this.namespaces.push(ns)
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this.engine.addResourceBundle('en', ns, data)
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})
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}
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// Load current language + namespaces
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this.refreshNamespaces(true)
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return this
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},
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attachMiddleware (app) {
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app.use(i18nMW.handle(this.engine))
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},
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async getByNamespace(locale, namespace) {
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if (this.engine.hasResourceBundle(locale, namespace)) {
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let data = this.engine.getResourceBundle(locale, namespace)
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return _.map(dotize.convert(data), (value, key) => {
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return {
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key,
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value
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}
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})
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} else {
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throw new Error('Invalid locale or namespace')
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}
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},
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async loadLocale(locale, opts = { silent: false }) {
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const res = await WIKI.models.locales.query().findOne('code', locale)
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if (res) {
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if (_.isPlainObject(res.strings)) {
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_.forOwn(res.strings, (data, ns) => {
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this.namespaces.push(ns)
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this.engine.addResourceBundle(locale, ns, data, true, true)
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})
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}
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} else if (!opts.silent) {
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throw new Error('No such locale in local store.')
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}
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},
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async refreshNamespaces (silent = false) {
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await this.loadLocale(WIKI.config.lang.code, { silent })
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if (WIKI.config.lang.namespacing) {
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for (let ns of WIKI.config.lang.namespaces) {
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await this.loadLocale(ns, { silent })
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}
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}
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},
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async setCurrentLocale(locale) {
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await Promise.fromCallback(cb => {
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return this.engine.changeLanguage(locale, cb)
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})
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}
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}
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