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lewis.moe
1import { register, init, getLocaleFromNavigator, locale, _ } from 'svelte-i18n'
2
3const LOCALE_STORAGE_KEY = 'tranquil-pds-locale'
4
5const SUPPORTED_LOCALES = ['en', 'zh', 'ja', 'ko'] as const
6export type SupportedLocale = typeof SUPPORTED_LOCALES[number]
7
8export const localeNames: Record<SupportedLocale, string> = {
9 en: 'English',
10 zh: '中文',
11 ja: '日本語',
12 ko: '한국어'
13}
14
15register('en', () => import('../locales/en.json'))
16register('zh', () => import('../locales/zh.json'))
17register('ja', () => import('../locales/ja.json'))
18register('ko', () => import('../locales/ko.json'))
19
20function getInitialLocale(): string {
21 const stored = localStorage.getItem(LOCALE_STORAGE_KEY)
22 if (stored && SUPPORTED_LOCALES.includes(stored as SupportedLocale)) {
23 return stored
24 }
25
26 const browserLocale = getLocaleFromNavigator()
27 if (browserLocale) {
28 const lang = browserLocale.split('-')[0]
29 if (SUPPORTED_LOCALES.includes(lang as SupportedLocale)) {
30 return lang
31 }
32 }
33
34 return 'en'
35}
36
37export function initI18n() {
38 init({
39 fallbackLocale: 'en',
40 initialLocale: getInitialLocale()
41 })
42}
43
44export function setLocale(newLocale: SupportedLocale) {
45 locale.set(newLocale)
46 localStorage.setItem(LOCALE_STORAGE_KEY, newLocale)
47 document.documentElement.lang = newLocale
48}
49
50export function getSupportedLocales(): SupportedLocale[] {
51 return [...SUPPORTED_LOCALES]
52}
53
54export { locale, _ }