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import * as i18n from "@solid-primitives/i18n"
import { createEffect, createMemo, createResource } from "solid-js"
import { createStore } from "solid-js/store"
import { createSimpleContext } from "@opencode-ai/ui/context"
import { Persist, persisted } from "@/utils/persist"
import { dict as en } from "@/i18n/en"
import { dict as uiEn } from "@opencode-ai/ui/i18n/en"
export type Locale =
| "en"
| "zh"
| "zht"
| "ko"
| "de"
| "es"
| "fr"
| "da"
| "ja"
| "pl"
| "ru"
| "ar"
| "no"
| "br"
| "th"
| "bs"
| "tr"
type RawDictionary = typeof en & typeof uiEn
type Dictionary = i18n.Flatten<RawDictionary>
type Source = { dict: Record<string, string> }
function cookie(locale: Locale) {
return `oc_locale=${encodeURIComponent(locale)}; Path=/; Max-Age=31536000; SameSite=Lax`
}
const LOCALES: readonly Locale[] = [
"en",
"zh",
"zht",
"ko",
"de",
"es",
"fr",
"da",
"ja",
"pl",
"ru",
"bs",
"ar",
"no",
"br",
"th",
"tr",
]
const INTL: Record<Locale, string> = {
en: "en",
zh: "zh-Hans",
zht: "zh-Hant",
ko: "ko",
de: "de",
es: "es",
fr: "fr",
da: "da",
ja: "ja",
pl: "pl",
ru: "ru",
ar: "ar",
no: "nb-NO",
br: "pt-BR",
th: "th",
bs: "bs",
tr: "tr",
}
const LABEL_KEY: Record<Locale, keyof Dictionary> = {
en: "language.en",
zh: "language.zh",
zht: "language.zht",
ko: "language.ko",
de: "language.de",
es: "language.es",
fr: "language.fr",
da: "language.da",
ja: "language.ja",
pl: "language.pl",
ru: "language.ru",
ar: "language.ar",
no: "language.no",
br: "language.br",
th: "language.th",
bs: "language.bs",
tr: "language.tr",
}
const base = i18n.flatten({ ...en, ...uiEn })
const dicts = new Map<Locale, Dictionary>([["en", base]])
const merge = (app: Promise<Source>, ui: Promise<Source>) =>
Promise.all([app, ui]).then(([a, b]) => ({ ...base, ...i18n.flatten({ ...a.dict, ...b.dict }) }) as Dictionary)
const loaders: Record<Exclude<Locale, "en">, () => Promise<Dictionary>> = {
zh: () => merge(import("@/i18n/zh"), import("@opencode-ai/ui/i18n/zh")),
zht: () => merge(import("@/i18n/zht"), import("@opencode-ai/ui/i18n/zht")),
ko: () => merge(import("@/i18n/ko"), import("@opencode-ai/ui/i18n/ko")),
de: () => merge(import("@/i18n/de"), import("@opencode-ai/ui/i18n/de")),
es: () => merge(import("@/i18n/es"), import("@opencode-ai/ui/i18n/es")),
fr: () => merge(import("@/i18n/fr"), import("@opencode-ai/ui/i18n/fr")),
da: () => merge(import("@/i18n/da"), import("@opencode-ai/ui/i18n/da")),
ja: () => merge(import("@/i18n/ja"), import("@opencode-ai/ui/i18n/ja")),
pl: () => merge(import("@/i18n/pl"), import("@opencode-ai/ui/i18n/pl")),
ru: () => merge(import("@/i18n/ru"), import("@opencode-ai/ui/i18n/ru")),
ar: () => merge(import("@/i18n/ar"), import("@opencode-ai/ui/i18n/ar")),
no: () => merge(import("@/i18n/no"), import("@opencode-ai/ui/i18n/no")),
br: () => merge(import("@/i18n/br"), import("@opencode-ai/ui/i18n/br")),
th: () => merge(import("@/i18n/th"), import("@opencode-ai/ui/i18n/th")),
bs: () => merge(import("@/i18n/bs"), import("@opencode-ai/ui/i18n/bs")),
tr: () => merge(import("@/i18n/tr"), import("@opencode-ai/ui/i18n/tr")),
}
function loadDict(locale: Locale) {
const hit = dicts.get(locale)
if (hit) return Promise.resolve(hit)
if (locale === "en") return Promise.resolve(base)
const load = loaders[locale]
return load().then((next: Dictionary) => {
dicts.set(locale, next)
return next
})
}
export function loadLocaleDict(locale: Locale) {
return loadDict(locale).then(() => undefined)
}
const localeMatchers: Array<{ locale: Locale; match: (language: string) => boolean }> = [
{ locale: "en", match: (language) => language.startsWith("en") },
{ locale: "zht", match: (language) => language.startsWith("zh") && language.includes("hant") },
{ locale: "zh", match: (language) => language.startsWith("zh") },
{ locale: "ko", match: (language) => language.startsWith("ko") },
{ locale: "de", match: (language) => language.startsWith("de") },
{ locale: "es", match: (language) => language.startsWith("es") },
{ locale: "fr", match: (language) => language.startsWith("fr") },
{ locale: "da", match: (language) => language.startsWith("da") },
{ locale: "ja", match: (language) => language.startsWith("ja") },
{ locale: "pl", match: (language) => language.startsWith("pl") },
{ locale: "ru", match: (language) => language.startsWith("ru") },
{ locale: "ar", match: (language) => language.startsWith("ar") },
{
locale: "no",
match: (language) => language.startsWith("no") || language.startsWith("nb") || language.startsWith("nn"),
},
{ locale: "br", match: (language) => language.startsWith("pt") },
{ locale: "th", match: (language) => language.startsWith("th") },
{ locale: "bs", match: (language) => language.startsWith("bs") },
{ locale: "tr", match: (language) => language.startsWith("tr") },
]
function detectLocale(): Locale {
if (typeof navigator !== "object") return "en"
const languages = navigator.languages?.length ? navigator.languages : [navigator.language]
for (const language of languages) {
if (!language) continue
const normalized = language.toLowerCase()
const match = localeMatchers.find((entry) => entry.match(normalized))
if (match) return match.locale
}
return "en"
}
export function normalizeLocale(value: string): Locale {
return LOCALES.includes(value as Locale) ? (value as Locale) : "en"
}
function readStoredLocale() {
if (typeof localStorage !== "object") return
try {
const raw = localStorage.getItem("opencode.global.dat:language")
if (!raw) return
const next = JSON.parse(raw) as { locale?: string }
if (typeof next?.locale !== "string") return
return normalizeLocale(next.locale)
} catch {
return
}
}
const warm = readStoredLocale() ?? detectLocale()
if (warm !== "en") void loadDict(warm)
export const { use: useLanguage, provider: LanguageProvider } = createSimpleContext({
name: "Language",
init: (props: { locale?: Locale }) => {
const initial = props.locale ?? readStoredLocale() ?? detectLocale()
const [store, setStore, _, ready] = persisted(
Persist.global("language", ["language.v1"]),
createStore({
locale: initial,
}),
)
const locale = createMemo<Locale>(() => normalizeLocale(store.locale))
const intl = createMemo(() => INTL[locale()])
const [dict] = createResource(locale, loadDict, {
initialValue: dicts.get(initial) ?? base,
})
const t = i18n.translator(() => dict() ?? base, i18n.resolveTemplate) as (
key: keyof Dictionary,
params?: Record<string, string | number | boolean>,
) => string
const label = (value: Locale) => t(LABEL_KEY[value])
createEffect(() => {
if (typeof document !== "object") return
document.documentElement.lang = locale()
document.cookie = cookie(locale())
})
return {
ready,
locale,
intl,
locales: LOCALES,
label,
t,
setLocale(next: Locale) {
setStore("locale", normalizeLocale(next))
},
}
},
})
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