cmux/web/app/[locale]/theme.tsx
Lawrence Chen cf75da8f8a
Internationalize website with next-intl for 19 languages (#1216)
* Add i18n framework with next-intl for 19 languages

Set up complete internationalization infrastructure:
- Install next-intl v4 with App Router support
- Create i18n config (routing, request, navigation)
- Add middleware for automatic locale detection from Accept-Language
- Restructure all routes under app/[locale]/
- Extract UI strings to messages/en.json
- Update all components to use useTranslations()
- Add language switcher dropdown in footer
- Support RTL for Arabic and Khmer
- Update sitemap with locale alternates
- Add generateStaticParams for all 19 locales

Languages: en, ja, zh-CN, zh-TW, ko, de, es, fr, it, da, pl, ru, bs, ar, no, pt-BR, th, tr, km

Locale detection: auto-detect from browser Accept-Language header,
with cookie persistence and locale prefix only for non-default (en).

* Add translations for de, fr, it, ja, zh-CN, zh-TW

* Add translations for ar, bs, da, es, km, no, pl, pt-BR, ru, th, tr

* Convert docs and legal pages to use useTranslations()

* Add i18n to keyboard shortcuts component

* Add i18n to wall-of-love, add missing blog posts to sitemap

* Add keyboard shortcuts and wallOfLove translations to all locales

* Update bun lockfile for next-intl dependency

* Fix t.rich() configPath: pass ReactNode not function for {var} interpolation

* Fix configPath: use rich text tag instead of plain interpolation for ReactNode

* Fix t.rich() interpolation: use rich text tags for all ReactNode placeholders

Changed {legacy}, {openShortcut}, {jumpShortcut} from plain variable
interpolation to <tag>content</tag> format so t.rich() gets proper
functions instead of values.

* Escape ICU curly braces in socketCallout rich text across all locales

* Fix i18n issues: Khmer RTL, zh-CN quality, locale-aware testimonials, hardcoded strings

- Fix Khmer (km) incorrectly marked as RTL (it's LTR, only Arabic is RTL)
- Fix zh-CN/zh-TW taglinePrefix to mention terminals and open source
- Add locale-aware testimonial translations: show original text, translate
  for non-matching locales, skip translation when locale matches original
- Translate hardcoded English table content in notifications page
- Add testimonial translations to all 19 locale files
- Remove unused setRequestLocale import and params from home page

* Address PR review comments: metadata localization, blog fixes, legal pages, accessibility

- Convert hardcoded metadata to generateMetadata with getTranslations on all docs, blog, community, and wall-of-love pages
- Fix blog canonical/OG URLs to be locale-aware
- Fix introducing-cmux .split(": ") by using separate label/desc translation keys
- Revert legal page titles to English (legal content stays English-only)
- Add focus-visible ring to language switcher for keyboard accessibility
- Preserve query string and hash when switching locale
- Convert site-footer to server component (remove unnecessary "use client")
- Remove .toLowerCase() on translated text in community page
- Add /docs/browser-automation and /wall-of-love to sitemap
- Fix keyboard-shortcuts jump link visibility with trimmed query
- Deduplicate blogSlugs by importing from blog-posts.ts
- Add typingCodingAgents/typingMultitasking translation keys to all locales
- Fix Spanish accent/tilde issues in es.json testimonials
- Fix nested <a> tag in homepage keyboard shortcuts feature
- Remove unused setRequestLocale import from homepage

* Convert remaining layout/index metadata to generateMetadata

- Root layout: locale-aware title, description, OG, and Twitter card metadata
- Docs layout: translated title template
- Blog layout: translated title template
- Blog index: locale-aware metadata

* Add translated metadata keys to all locales, fix docs redirect

- Add meta.title/description/ogDescription to all 18 non-English locales
- Add docs.layoutTitle, blog.layoutTitle/metaTitle/metaDescription to all locales
- Add blog post metadata (zenOfCmux, cmdShiftU, showHnLaunch, introducingCmux) to all locales
- Add community.metaTitle/metaDescription to all locales
- Fix docs index redirect to preserve locale prefix

* Add translated docs page metaTitle keys to all locales
2026-03-12 05:36:58 -07:00

77 lines
2.2 KiB
TypeScript

"use client";
import { useTheme } from "next-themes";
import { flushSync } from "react-dom";
export function ThemeToggle() {
const { resolvedTheme, setTheme } = useTheme();
const toggle = () => {
const next = resolvedTheme === "dark" ? "light" : "dark";
const apply = () => {
setTheme(next);
const meta = document.querySelector('meta[name="theme-color"]');
if (meta) meta.setAttribute("content", next === "dark" ? "#0a0a0a" : "#fafafa");
};
if (
!document.startViewTransition ||
window.matchMedia("(prefers-reduced-motion: reduce)").matches
) {
apply();
return;
}
document.startViewTransition(() => {
flushSync(apply);
});
};
return (
<button
onClick={toggle}
className="inline-flex h-9 w-9 items-center justify-center text-muted hover:text-foreground transition-colors cursor-pointer"
aria-label="Toggle theme"
>
{/* Sun icon — visible in dark mode, hidden in light mode */}
<svg
width="16"
height="16"
viewBox="0 0 24 24"
fill="none"
stroke="currentColor"
strokeWidth="1.5"
strokeLinecap="round"
strokeLinejoin="round"
className="hidden dark:block"
aria-hidden="true"
>
<circle cx="12" cy="12" r="5" />
<line x1="12" y1="1" x2="12" y2="3" />
<line x1="12" y1="21" x2="12" y2="23" />
<line x1="4.22" y1="4.22" x2="5.64" y2="5.64" />
<line x1="18.36" y1="18.36" x2="19.78" y2="19.78" />
<line x1="1" y1="12" x2="3" y2="12" />
<line x1="21" y1="12" x2="23" y2="12" />
<line x1="4.22" y1="19.78" x2="5.64" y2="18.36" />
<line x1="18.36" y1="5.64" x2="19.78" y2="4.22" />
</svg>
{/* Moon icon — visible in light mode, hidden in dark mode */}
<svg
width="16"
height="16"
viewBox="0 0 24 24"
fill="none"
stroke="currentColor"
strokeWidth="1.5"
strokeLinecap="round"
strokeLinejoin="round"
className="block dark:hidden"
aria-hidden="true"
>
<path d="M21 12.79A9 9 0 1 1 11.21 3 7 7 0 0 0 21 12.79z" />
</svg>
</button>
);
}