firebase.js

import { initializeApp } from 'firebase/app';
import { getFirestore } from 'firebase/firestore';
// Remove unused import for getAnalytics if not needed
// import { getAnalytics } from 'firebase/analytics';

// Retrieve Firebase configuration from environment variables
const firebaseConfig = {
  apiKey: process.env.NEXT_PUBLIC_FIREBASE_API_KEY,
  authDomain: process.env.NEXT_PUBLIC_FIREBASE_AUTH_DOMAIN,
  projectId: process.env.NEXT_PUBLIC_FIREBASE_PROJECT_ID,
  storageBucket: process.env.NEXT_PUBLIC_FIREBASE_STORAGE_BUCKET,
  messagingSenderId: process.env.NEXT_PUBLIC_FIREBASE_MESSAGING_SENDER_ID,
  appId: process.env.NEXT_PUBLIC_FIREBASE_APP_ID,
  measurementId: process.env.NEXT_PUBLIC_FIREBASE_MEASUREMENT_ID,
};

// Ensure Firebase is initialized only once
let app;
if (!app) {
  try {
    app = initializeApp(firebaseConfig);
  } catch (error) {
    console.error('Firebase initialization error:', error);
    throw new Error('Failed to initialize Firebase');
  }
}

const db = getFirestore(app);
export { db };