From 812597bb8b101896a8988493d37261ff851ae502 Mon Sep 17 00:00:00 2001
From: Adam <2363879+adamdotdevin@users.noreply.github.com>
Date: Fri, 6 Feb 2026 08:54:51 -0600
Subject: feat(web): i18n (#12471)

---
 packages/console/app/src/context/i18n.tsx     | 27 +++++++++++
 packages/console/app/src/context/language.tsx | 68 +++++++++++++++++++++++++++
 2 files changed, 95 insertions(+)
 create mode 100644 packages/console/app/src/context/i18n.tsx
 create mode 100644 packages/console/app/src/context/language.tsx

(limited to 'packages/console/app/src/context')

diff --git a/packages/console/app/src/context/i18n.tsx b/packages/console/app/src/context/i18n.tsx
new file mode 100644
index 000000000..5d178c8b8
--- /dev/null
+++ b/packages/console/app/src/context/i18n.tsx
@@ -0,0 +1,27 @@
+import { createMemo } from "solid-js"
+import { createSimpleContext } from "@opencode-ai/ui/context"
+import { i18n, type Key } from "~/i18n"
+import { useLanguage } from "~/context/language"
+
+function resolve(text: string, params?: Record<string, string | number>) {
+  if (!params) return text
+  return text.replace(/\{\{(\w+)\}\}/g, (raw, key) => {
+    const value = params[key]
+    if (value === undefined || value === null) return raw
+    return String(value)
+  })
+}
+
+export const { use: useI18n, provider: I18nProvider } = createSimpleContext({
+  name: "I18n",
+  init: () => {
+    const language = useLanguage()
+    const dict = createMemo(() => i18n(language.locale()))
+
+    return {
+      t(key: Key, params?: Record<string, string | number>) {
+        return resolve(dict()[key], params)
+      },
+    }
+  },
+})
diff --git a/packages/console/app/src/context/language.tsx b/packages/console/app/src/context/language.tsx
new file mode 100644
index 000000000..7e3e5286c
--- /dev/null
+++ b/packages/console/app/src/context/language.tsx
@@ -0,0 +1,68 @@
+import { createEffect } from "solid-js"
+import { createStore } from "solid-js/store"
+import { getRequestEvent } from "solid-js/web"
+import { createSimpleContext } from "@opencode-ai/ui/context"
+import {
+  LOCALES,
+  type Locale,
+  clearCookie,
+  cookie,
+  detectFromLanguages,
+  dir as localeDir,
+  label as localeLabel,
+  localeFromCookieHeader,
+  localeFromRequest,
+  parseLocale,
+  tag as localeTag,
+} from "~/lib/language"
+
+function initial() {
+  const evt = getRequestEvent()
+  if (evt) return localeFromRequest(evt.request)
+
+  if (typeof document === "object") {
+    const fromDom = parseLocale(document.documentElement.dataset.locale)
+    if (fromDom) return fromDom
+
+    const fromCookie = localeFromCookieHeader(document.cookie)
+    if (fromCookie) return fromCookie
+  }
+
+  if (typeof navigator !== "object") return "en" satisfies Locale
+
+  const languages = navigator.languages?.length ? navigator.languages : [navigator.language]
+  return detectFromLanguages(languages)
+}
+
+export const { use: useLanguage, provider: LanguageProvider } = createSimpleContext({
+  name: "Language",
+  init: () => {
+    const [store, setStore] = createStore({
+      locale: initial(),
+    })
+
+    createEffect(() => {
+      if (typeof document !== "object") return
+      document.documentElement.lang = localeTag(store.locale)
+      document.documentElement.dir = localeDir(store.locale)
+      document.documentElement.dataset.locale = store.locale
+    })
+
+    return {
+      locale: () => store.locale,
+      locales: LOCALES,
+      label: localeLabel,
+      tag: localeTag,
+      dir: localeDir,
+      setLocale(next: Locale) {
+        setStore("locale", next)
+        if (typeof document !== "object") return
+        document.cookie = cookie(next)
+      },
+      clear() {
+        if (typeof document !== "object") return
+        document.cookie = clearCookie()
+      },
+    }
+  },
+})
-- 
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