ims/components/language-switcher.tsx

'use client'

import { useRouter } from 'next/navigation'
import { useEffect, useState } from 'react'

const LOCALES: Record<string, string> = {
  en: 'English',
  ms: 'Bahasa Malaysia',
  zh: '中文',
}

export function LanguageSwitcher() {
  const router = useRouter()
  const [current, setCurrent] = useState('en')

  useEffect(() => {
    const match = document.cookie
      .split('; ')
      .find(c => c.startsWith('locale='))
      ?.split('=')[1]
    // eslint-disable-next-line react-hooks/set-state-in-effect
    if (match && match in LOCALES) setCurrent(match)
  }, [])

  function handleChange(locale: string) {
    document.cookie = `locale=${locale}; path=/; max-age=31536000; SameSite=Lax`
    setCurrent(locale)
    router.refresh()
  }

  return (
    <select
      value={current}
      onChange={e => handleChange(e.target.value)}
      aria-label="Select language"
      className="text-xs border border-gray-300 rounded px-2 py-1 bg-white text-gray-700 focus:outline-none focus:ring-1 focus:ring-blue-500"
    >
      {Object.entries(LOCALES).map(([code, label]) => (
        <option key={code} value={code}>{label}</option>
      ))}
    </select>
  )
}