100 lines
3.5 KiB
Dart
100 lines
3.5 KiB
Dart
import 'package:firebase_auth/firebase_auth.dart';
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import 'package:google_sign_in/google_sign_in.dart';
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final _auth = FirebaseAuth.instance;
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Future<UserCredential> signInWithGoogle() async {
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try {
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// Trigger the authentication flow
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final GoogleSignInAccount googleUser = await GoogleSignIn.instance.authenticate();
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// Obtain the auth details from the request
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final GoogleSignInAuthentication googleAuth = googleUser.authentication;
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// Create a new credential
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final credential = GoogleAuthProvider.credential(idToken: googleAuth.idToken);
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// Once signed in, return the UserCredential
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return await FirebaseAuth.instance.signInWithCredential(credential);
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} catch (e) {
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// Handle and map Google sign-in specific errors
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final msg = mapAuthErrorGoogle(e.toString());
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throw Exception(msg);
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}
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}
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// flutter: Google sign-in failed: PlatformException(google_sign_in, Your app is missing support for the following URL schemes: com.googleusercontent.apps.441447288850-m7pld8j4gv8k1guc5l0jpk1auqi93mna, NSInvalidArgumentException, null)
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Future<UserCredential> signUpEmail({required String email, required String password}) async {
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try {
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return await _auth.createUserWithEmailAndPassword(email: email.trim(), password: password);
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} on FirebaseAuthException catch (e) {
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throw _mapAuthError(e);
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}
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}
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Future<UserCredential> signInEmail({required String email, required String password}) async {
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try {
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return await _auth.signInWithEmailAndPassword(email: email.trim(), password: password);
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} on FirebaseAuthException catch (e) {
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throw _mapAuthError(e);
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}
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}
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Future<void> signOut() => _auth.signOut();
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Stream<User?> get authState => _auth.authStateChanges();
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String _mapAuthError(FirebaseAuthException e) {
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switch (e.code) {
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case 'invalid-email':
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return 'The email address is badly formatted.';
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case 'user-disabled':
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return 'This account has been disabled.';
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case 'user-not-found':
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return 'No account found with this email.';
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case 'wrong-password':
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return 'Incorrect password.';
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case 'email-already-in-use':
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return 'An account already exists with this email.';
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case 'weak-password':
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return 'Please choose a stronger password.';
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case 'operation-not-allowed':
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return 'Email/Password is disabled in Firebase Console.';
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default:
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return 'Authentication failed. (${e.code})';
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}
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}
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String mapAuthErrorGoogle(Object e) {
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// Some errors come wrapped in PlatformException or GoogleSignInException.
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final msg = e.toString();
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if (msg.contains('GoogleSignInExceptionCode.canceled') ||
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msg.contains('The user canceled') ||
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msg.contains('sign-in flow.') ||
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msg.contains('sign-in sflow.') ||
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msg.contains('Exception: Sign-in was canceled')) {
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return 'Sign-in was canceled.';
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}
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if (msg.contains('no_network') || msg.contains('network error') || msg.contains('Network connection lost')) {
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return 'Check your internet connection and try again.';
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}
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if (msg.contains('No active configuration') || msg.contains('GIDClientID')) {
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return 'Google Sign-In is not configured correctly for this app.';
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}
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if (msg.contains('sign_in_failed') || msg.contains('invalid credentials') || msg.contains('Authentication error')) {
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return 'Could not sign in with Google. Please try again.';
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}
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if (msg.contains('popup_closed_by_user') || msg.contains('User closed the popup')) {
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return 'Google sign-in was closed before completion.';
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}
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return 'Google authentication failed.';
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}
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