'use server'

import { headers } from 'next/headers'
import { detectUserLanguage, parseAcceptLanguage } from '@/lib/i18n/detect-user-language'
import { SupportedLanguage } from '@/lib/i18n/load-translations'

/**
 * Server action to detect user's preferred language
 * Called on app load to set initial language
 */
export async function getInitialLanguage(): Promise<SupportedLanguage> {
  try {
    const headersList = await headers()
    const browserLang = parseAcceptLanguage(headersList.get('accept-language'))
    return await detectUserLanguage(browserLang)
  } catch {
    return await detectUserLanguage()
  }
}