import { initializeApp, getApps } from 'firebase/app'

export default defineNuxtPlugin(() => {
  const config = useRuntimeConfig()

  const firebaseConfig = {
    apiKey: config.public.firebaseApiKey,
    authDomain: config.public.firebaseAuthDomain,
    projectId: config.public.firebaseProjectId,
    appId: config.public.firebaseAppId,
    messagingSenderId: config.public.firebaseMessagingSenderId
  }

  if (!firebaseConfig.apiKey) {
    console.warn('[Firebase] API key not configured. Google Sign-In will not work.')
    return
  }

  if (!getApps().length) {
    initializeApp(firebaseConfig)
    console.log('[Firebase] Initialized')
  }
})