import { DataSnapshot } from 'firebase/database/dist/database/index' ; import { initializeApp } from 'firebase/app' ; import { getAuth , GoogleAuthProvider , signInWithCredential , signOut } from 'firebase/auth' ; import { getDatabase , ref , set , onValue , off } from 'firebase/database' ; import { FIREBASE_CONFIG } from '../config/api' ; initializeApp ( FIREBASE_CONFIG ) ; const getRef = ( path ) => ref ( getDatabase ( ) , path ) ; export const signIntoDatabase = ( idToken , accessToken ) => signInWithCredential ( getAuth ( ) , GoogleAuthProvider . credential ( idToken , accessToken ) ) ; export const signOutOfDatabase = ( ) => signOut ( getAuth ( ) ) ; export const saveData = async ( path , data ) => set ( getRef ( path ) , data ) ; export const subscribeToData = ( path , callback ) => { const reference = getRef ( path ) ; const handler = ( snapshot ) => callback ( snapshot . val ( ) || undefined ) ; onValue ( reference , handler ) ; return ( ) => off ( reference , 'value' , handler ) ; } ;