import { cert, getApps, initializeApp } from 'firebase-admin/app';
import { getAuth } from 'firebase-admin/auth';
import { env } from './env.js';

// Guards against re-initializing on every hot-reload/import in dev.
const app = getApps()[0] ?? initializeApp({
  credential: cert({
    projectId: env.FIREBASE_PROJECT_ID,
    clientEmail: env.FIREBASE_CLIENT_EMAIL,
    // .env stores the key with literal "\n" sequences; turn them back into real newlines.
    privateKey: env.FIREBASE_PRIVATE_KEY.replace(/\\n/g, '\n'),
  }),
});

export const firebaseAuth = getAuth(app);