// auth.ts
import auth from '@react-native-firebase/auth';  // Importing Firebase Authentication from React Native Firebase
import { FirebaseAuthTypes } from '@react-native-firebase/auth';

// Function to handle user sign-in with email and password
export const signIn = async (email: string, password: string) => {
  try {
    const userCredential = await auth().signInWithEmailAndPassword(email, password);
    return { user: userCredential.user };  // Return the user on success
  } catch (error: any) {
    throw new Error(error.message);  // Throw an error if sign-in fails
  }
};

// Function to handle user sign-up with email and password
export const signUp = async (email: string, password: string) => {
  try {
    const userCredential = await auth().createUserWithEmailAndPassword(email, password);
    const user = userCredential.user;
    console.log('User signed up:', user);
    return user;
  } catch (error) {
    console.error('Error signing up:', error);
    throw error;
  }
};

// Function to handle user sign-out
export const signOutUser = async () => {
  try {
    await auth().signOut();
    console.log('User signed out');
  } catch (error) {
    console.error('Error signing out:', error);
    throw error;
  }
};

// Listen for changes in authentication state
export const authStateListener = (callback: (user: FirebaseAuthTypes.User | null) => void) => {
  return auth().onAuthStateChanged(user => {
    if (user) {
      console.log('User is authenticated:', user);
    } else {
      console.log('No user is signed in.');
    }
    callback(user);
  });
};