https://sciencesangrah.live/live-event/firebase/firebase-init.js?v=1.0.5

1/**
2 * Firebase v10 modular initialization for the live-event system.
3 * Reuses an existing app instance when another module has already initialized Firebase.
4 * RTDB is added here in a backward-compatible way so Firestore and RTDB can
5 * coexist without changing existing quiz business logic.
6 */
7
8import { initializeApp, getApp } from "https://www.gstatic.com/firebasejs/10.7.0/firebase-app.js";
9import { getAuth } from "https://www.gstatic.com/firebasejs/10.7.0/firebase-auth.js";
10import { getFirestore } from "https://www.gstatic.com/firebasejs/10.7.0/firebase-firestore.js";
11import {
12    getDatabase,
13    ref,
14    set
15} from "https://www.gstatic.com/firebasejs/10.7.0/firebase-database.js";
16
17const firebaseConfig = {
18    apiKey: "AIzaSyDF7arzKYkwsictuiYxYGkYrf6hRkpb9sI",
19    authDomain: "science-sangrah-5067f.firebaseapp.com",
20    projectId: "science-sangrah-5067f",
21    // RTDB uses the same Firebase app. Adding the database URL here does not
22    // change Firestore behavior; it only enables safe RTDB access when needed.
23    databaseURL: "https://science-sangrah-5067f-default-rtdb.asia-southeast1.firebasedatabase.app",
24    storageBucket: "science-sangrah-5067f.firebasestorage.app",
25    messagingSenderId: "560169611023",
26    appId: "1:560169611023:web:8259c9db3d2020b4aa587a"
27};
28
29let app;
30try {
31    app = getApp();
32} catch (error) {
33    if (error.code !== "app/no-app") {
34        console.error("Firebase App initialization error:", error);
35        throw error;
36    }
37    app = initializeApp(firebaseConfig);
38}
39
40// Existing Firestore and Auth initializers remain unchanged.
41const db = getFirestore(app);
42const auth = getAuth(app);
43// RTDB is initialized from the exact same app instance to avoid duplicate apps.
44const rtdb = getDatabase(app);
45
46/**
47 * Manual RTDB connectivity probe.
48 * This is intentionally not executed automatically so production quiz logic,
49 * listeners, timers, and UI remain untouched until someone calls it explicitly.
50 *
51 * Safe test path:
52 *   test/working = true
53 */
54async function writeRtdbConnectionTest() {
55    await set(ref(rtdb, "test/working"), true);
56    return true;
57}
58
59export { app, auth, db, rtdb, writeRtdbConnectionTest };