ims/lib/i18n/server.ts

import { cookies } from 'next/headers'
import { SUPPORTED_LOCALES, type Locale } from './locales'
import type { Messages } from './context'

export async function getLocale(): Promise<Locale> {
  const cookieStore = await cookies()
  const lang = cookieStore.get('locale')?.value
  if (lang && (SUPPORTED_LOCALES as readonly string[]).includes(lang)) {
    return lang as Locale
  }
  return 'en'
}

export async function loadMessages(locale: Locale): Promise<Messages> {
  switch (locale) {
    case 'ms': return (await import('../../messages/ms.json')).default as Messages
    case 'zh': return (await import('../../messages/zh.json')).default as Messages
    default:   return (await import('../../messages/en.json')).default as Messages
  }
}