import firebase from 'firebase/compat/app'
import 'firebase/compat/auth';
import * as firebaseui from 'firebaseui'
import 'firebaseui/dist/firebaseui.css'

const firebaseConfig = {...};
const app = firebase.initializeApp(firebaseConfig);
const auth = firebase.auth(app);

auth.onAuthStateChanged(user => {
    // Problem: authResult.user.providerData is empty after signin with firebaseui, ❌
    // but has one element when using auth.signInWithEmailAndPassword() directly ✅
    console.log("user signed in", user);
})

const signInSuccessWithAuthResult = (authResult: any, redirectUrl?: string) => {
    console.log("authResult", authResult); // Problem: authResult.user.providerData is empty! ❌
    auth.signOut();
    return false;
}

const ui = new firebaseui.auth.AuthUI(auth);
ui.start('#root', {
    signInOptions: [
        firebase.auth.EmailAuthProvider.PROVIDER_ID
    ],
    callbacks: {
        signInSuccessWithAuthResult,
    },
});

auth.signInWithEmailAndPassword("my-email@email.de", "password").then(credential => {
    console.log("signInWithEmailAndPassword", credential); // credential.user.providerData.length === 1 ✅
    return auth.signOut();
})