/* * SPDX-FileCopyrightText: syuilo and other misskey contributors * SPDX-License-Identifier: AGPL-3.0-only */ /* * Language manager for SW */ import { get, set } from 'idb-keyval'; import { I18n, type Locale } from '@/scripts/i18n'; class SwLang { public cacheName = `mk-cache-${_VERSION_}`; public lang: Promise = get('lang').then(async prelang => { if (!prelang) return 'en-US'; return prelang; }); public setLang(newLang: string): Promise> { this.lang = Promise.resolve(newLang); set('lang', newLang); return this.fetchLocale(); } public i18n: Promise | null = null; public fetchLocale(): Promise> { return (this.i18n = this._fetch()); } private async _fetch(): Promise> { // Service Workerは何度も起動しそのたびにlocaleを読み込むので、CacheStorageを使う const localeUrl = `/assets/locales/${await this.lang}.${_VERSION_}.json`; let localeRes = await caches.match(localeUrl); // _DEV_がtrueの場合は常に最新化 if (!localeRes || _DEV_) { localeRes = await fetch(localeUrl); const clone = localeRes.clone(); if (!clone.clone().ok) throw new Error('locale fetching error'); caches.open(this.cacheName).then(cache => cache.put(localeUrl, clone)); } return new I18n(await localeRes.json()); } } export const swLang = new SwLang();