feat: multiple language support

package.json

@@ -44,6 +44,7 @@
     "recharts": "^2.12.5",
     "tailwind-merge": "^2.2.2",
     "tailwindcss-animate": "^1.0.7",
+    "use-intl": "^3.20.0",
     "zod": "^3.22.4"
   },
   "devDependencies": {

src/components/language-provider.tsx

@@ -0,0 +1,61 @@
+import { createContext, useContext, useState } from 'react'
+import { IntlProvider } from 'use-intl'
+import translations from '../translations'
+
+export type Language = 'en' | 'zh'
+
+type LanguageProviderProps = {
+  children: React.ReactNode
+  defaultLanguage?: Language
+  storageKey?: string
+}
+
+type LanguageProviderState = {
+  language: Language
+  setLanguage: (lang: Language) => void
+}
+
+const initialState: LanguageProviderState = {
+  language: 'en',
+  setLanguage: () => null,
+}
+
+const LanguageProviderContext =
+  createContext<LanguageProviderState>(initialState)
+
+export function LanguageProvider({
+  children,
+  defaultLanguage = 'en',
+  storageKey = 'vite-ui-language',
+  ...props
+}: LanguageProviderProps) {
+  const [language, setLanguage] = useState<Language>(
+    () => (localStorage.getItem(storageKey) as Language) || defaultLanguage
+  )
+
+  const value = {
+    language,
+    setLanguage: (lang: Language) => {
+      localStorage.setItem(storageKey, lang)
+      setLanguage(lang)
+    },
+  }
+
+  return (
+    <LanguageProviderContext.Provider {...props} value={value}>
+      <IntlProvider locale={language} messages={translations[language]}>
+        {children}
+      </IntlProvider>
+    </LanguageProviderContext.Provider>
+  )
+}
+
+// eslint-disable-next-line react-refresh/only-export-components
+export const useLanguage = () => {
+  const context = useContext(LanguageProviderContext)
+
+  if (context === undefined)
+    throw new Error('useLanguage must be used within a LanguageProvider')
+
+  return context
+}

src/components/language-switch.tsx

@@ -0,0 +1,49 @@
+import { Language, useLanguage } from './language-provider'
+import { IconCheck } from '@tabler/icons-react'
+import { cn } from '@/lib/utils'
+import {
+  DropdownMenu,
+  DropdownMenuContent,
+  DropdownMenuItem,
+  DropdownMenuTrigger,
+} from '@/components/ui/dropdown-menu'
+import { Button } from './custom/button'
+
+export default function LanguageSwitch() {
+  const { language, setLanguage } = useLanguage()
+
+  const languageText = new Map<string, string>([
+    ['en', 'English'],
+    ['zh', '简体中文'],
+  ])
+
+  const renderDropdownItem = () => {
+    return Array.from(languageText).map(([key, value]) => (
+      <DropdownMenuItem key={key} onClick={() => setLanguage(key as Language)}>
+        {value}{' '}
+        <IconCheck
+          size={14}
+          className={cn('ml-auto', language !== key && 'hidden')}
+        />
+      </DropdownMenuItem>
+    ))
+  }
+
+  return (
+    <DropdownMenu>
+      <DropdownMenuTrigger asChild>
+        <Button
+          variant='outline'
+          size='default'
+          className='scale-95 rounded-full'
+        >
+          {languageText.get(language)}
+          <span className='sr-only'>Toggle language</span>
+        </Button>
+      </DropdownMenuTrigger>
+      <DropdownMenuContent align='end'>
+        {renderDropdownItem()}
+      </DropdownMenuContent>
+    </DropdownMenu>
+  )
+}

src/components/nav.tsx

@@ -23,6 +23,7 @@ import {
 import { cn } from '@/lib/utils'
 import useCheckActiveNav from '@/hooks/use-check-active-nav'
 import { SideLink } from '@/data/sidelinks'
+import { useTranslations } from 'use-intl'
 
 interface NavProps extends React.HTMLAttributes<HTMLDivElement> {
   isCollapsed: boolean
@@ -89,6 +90,7 @@ function NavLink({
   subLink = false,
 }: NavLinkProps) {
   const { checkActiveNav } = useCheckActiveNav()
+  const t = useTranslations()
   return (
     <Link
       to={href}
@@ -104,7 +106,7 @@ function NavLink({
       aria-current={checkActiveNav(href) ? 'page' : undefined}
     >
       <div className='mr-2'>{icon}</div>
-      {title}
+      {t(title)}
       {label && (
         <div className='ml-2 rounded-lg bg-primary px-1 text-[0.625rem] text-primary-foreground'>
           {label}
@@ -116,6 +118,7 @@ function NavLink({
 
 function NavLinkDropdown({ title, icon, label, sub, closeNav }: NavLinkProps) {
   const { checkActiveNav } = useCheckActiveNav()
+  const t = useTranslations()
 
   /* Open collapsible by default
    * if one of child element is active */
@@ -130,7 +133,7 @@ function NavLinkDropdown({ title, icon, label, sub, closeNav }: NavLinkProps) {
         )}
       >
         <div className='mr-2'>{icon}</div>
-        {title}
+        {t(title)}
         {label && (
           <div className='ml-2 rounded-lg bg-primary px-1 text-[0.625rem] text-primary-foreground'>
             {label}

src/components/search.tsx

@@ -1,11 +1,13 @@
 import { Input } from '@/components/ui/input'
+import { useTranslations } from 'use-intl'
 
 export function Search() {
+  const t = useTranslations('dashboard')
   return (
     <div>
       <Input
         type='search'
-        placeholder='Search...'
+        placeholder={t('search')}
         className='md:w-[100px] lg:w-[300px]'
       />
     </div>

src/components/top-nav.tsx

@@ -8,6 +8,7 @@ import {
 } from '@/components/ui/dropdown-menu'
 import { Button } from './custom/button'
 import { IconMenu } from '@tabler/icons-react'
+import { useTranslations } from 'use-intl'
 
 interface TopNavProps extends React.HTMLAttributes<HTMLElement> {
   links: {
@@ -18,6 +19,7 @@ interface TopNavProps extends React.HTMLAttributes<HTMLElement> {
 }
 
 export function TopNav({ className, links, ...props }: TopNavProps) {
+  const t = useTranslations()
   return (
     <>
       <div className='md:hidden'>
@@ -34,7 +36,7 @@ export function TopNav({ className, links, ...props }: TopNavProps) {
                   to={href}
                   className={!isActive ? 'text-muted-foreground' : ''}
                 >
-                  {title}
+                  {t(title)}
                 </Link>
               </DropdownMenuItem>
             ))}
@@ -55,7 +57,7 @@ export function TopNav({ className, links, ...props }: TopNavProps) {
             to={href}
             className={`text-sm font-medium transition-colors hover:text-primary ${isActive ? '' : 'text-muted-foreground'}`}
           >
-            {title}
+            {t(title)}
           </Link>
         ))}
       </nav>

src/components/user-nav.tsx

@@ -10,8 +10,10 @@ import {
   DropdownMenuShortcut,
   DropdownMenuTrigger,
 } from '@/components/ui/dropdown-menu'
+import { useTranslations } from 'use-intl'
 
 export function UserNav() {
+  const t = useTranslations('userNav')
   return (
     <DropdownMenu>
       <DropdownMenuTrigger asChild>
@@ -34,22 +36,22 @@ export function UserNav() {
         <DropdownMenuSeparator />
         <DropdownMenuGroup>
           <DropdownMenuItem>
-            Profile
+            {t('profile')}
             <DropdownMenuShortcut>⇧⌘P</DropdownMenuShortcut>
           </DropdownMenuItem>
           <DropdownMenuItem>
-            Billing
+            {t('billing')}
             <DropdownMenuShortcut>⌘B</DropdownMenuShortcut>
           </DropdownMenuItem>
           <DropdownMenuItem>
-            Settings
+            {t('settings')}
             <DropdownMenuShortcut>⌘S</DropdownMenuShortcut>
           </DropdownMenuItem>
-          <DropdownMenuItem>New Team</DropdownMenuItem>
+          <DropdownMenuItem>{t('new_team')}</DropdownMenuItem>
         </DropdownMenuGroup>
         <DropdownMenuSeparator />
         <DropdownMenuItem>
-          Log out
+          {t('log_out')}
           <DropdownMenuShortcut>⇧⌘Q</DropdownMenuShortcut>
         </DropdownMenuItem>
       </DropdownMenuContent>