import { initializeApp } from "https://www.gstatic.com/firebasejs/11.6.1/firebase-app.js";
import {
  getAuth,
  createUserWithEmailAndPassword,
  signInWithEmailAndPassword,
  signOut,
  onAuthStateChanged
} from "https://www.gstatic.com/firebasejs/11.6.1/firebase-auth.js";
import {
  getFirestore,
  doc,
  setDoc,
  getDoc
} from "https://www.gstatic.com/firebasejs/11.6.1/firebase-firestore.js";

const firebaseConfig = {
    apiKey: "AIzaSyDr1jMgGm0Oj_bOiWY-8Gy27IlzkmAzlOM",
    authDomain: "parcoursupp-expl.firebaseapp.com",
    projectId: "parcoursupp-expl",
    storageBucket: "parcoursupp-expl.firebasestorage.app",
    messagingSenderId: "973054617217",
    appId: "1:973054617217:web:4d52af4280396976228f80"
  };

const app = initializeApp(firebaseConfig);
const auth = getAuth(app);
const db = getFirestore(app);

async function createAccount(email, password) {
  return createUserWithEmailAndPassword(auth, email, password);
}

async function login(email, password) {
  return signInWithEmailAndPassword(auth, email, password);
}

async function logout() {
  return signOut(auth);
}

function onUserChanged(callback) {
  return onAuthStateChanged(auth, callback);
}

async function saveUserData(uid, data) {
  await setDoc(doc(db, "users", uid), data, { merge: true });
}

async function loadUserData(uid) {
  const snap = await getDoc(doc(db, "users", uid));
  return snap.exists() ? snap.data() : null;
}

export {
  auth,
  db,
  createAccount,
  login,
  logout,
  onUserChanged,
  saveUserData,
  loadUserData
};