import "server-only";
import { initializeApp, getApps, getApp, cert, App } from "firebase-admin/app";
import { getAuth, Auth } from "firebase-admin/auth";
import { getFirestore, Firestore } from "firebase-admin/firestore";

const serviceAccount = {
  projectId: process.env.FIREBASE_PROJECT_ID,
  clientEmail: process.env.FIREBASE_CLIENT_EMAIL,
  privateKey: process.env.FIREBASE_PRIVATE_KEY?.replace(/\\n/g, "\n"),
};

let appAdmin: App;

if (getApps().length === 0) {
  if (serviceAccount.projectId && serviceAccount.clientEmail && serviceAccount.privateKey) {
    appAdmin = initializeApp({
      credential: cert(serviceAccount),
    });
  } else {
    console.warn(
      "Les infos Firebase Admin sont incomplètes. Initialisation avec les identifiants par défaut."
    );
    appAdmin = initializeApp();
  }
} else {
  appAdmin = getApp();
}

const authAdmin: Auth = getAuth(appAdmin);
const dbAdmin: Firestore = getFirestore(appAdmin);

export { appAdmin, authAdmin, dbAdmin };