@jvhaile/loopback4-helper/src/auth/services/firebase.service.ts

Helper components and tools for loopback 4.

import {injectable, BindingScope} from '@loopback/core';
import firebaseAdmin = require('firebase-admin');
import {inject} from '@loopback/core';

import {FirebaseUser} from "../types";
import {ServiceAccount} from "firebase-admin/lib/credential";
import {FirebaseBindings} from "../keys";

@injectable({scope: BindingScope.SINGLETON})
export class FirebaseService {

    constructor(
        @inject(FirebaseBindings.FIREBASE_SERVICE_ACCOUNT) serviceAccount: ServiceAccount,
        @inject(FirebaseBindings.FIREBASE_DB_URL) databaseURL: string,
    ) {
        console.log("-------------------------INIT FIREBASE--------------------------");
        firebaseAdmin.initializeApp({
            credential: firebaseAdmin.credential.cert(serviceAccount),
            databaseURL,
        });
    }

    async verifyIdTokenAndGetFirebaseUser(idToken: string): Promise<FirebaseUser> {
        const decodedIdToken = await firebaseAdmin.auth().verifyIdToken(idToken);
        const uid = decodedIdToken.uid;
        return firebaseAdmin.auth().getUser(uid);
    }

}