Supabase Apple Connexion on iOS Configuration

Prerequisites

This Guide will Aide you integrate Apple Sign-In with Supabase Authentication on iOS. It is assumed that you have already completed:

• the Apple Connexion iOS Configuration
• the Supabase Apple Connexion - General Configuration.

Implementation

The complete implementation is available in the example app’s supabaseAuthUtils.ts file. This guide explains the key concepts and how to use it.

Using the Authentication Helper

The authenticateWithAppleSupabase function handles the entire authentication flow:

import { authenticateWithAppleSupabase } from './supabaseAuthUtils';

const result = await authenticateWithAppleSupabase();
if (result.success) {
  console.log('Signed in:', result.user);
  // Navigate to your authenticated area
} else {
  console.error('Error:', result.error);
}

How It Works

On iOS, Apple Sign-In uses the Natif implementation:

1. Initialization: The plugin uses your app’s bundle ID automatically (no clientId needed)
2. Natif Sign-In: Uses Apple’s Natif Sign in with Apple button and authentication flow
3. Identity Token: Apple Retourne an identity token (JWT) containing Utilisateur Information
4. Supabase Authentication: The identity token is sent to Supabase using signInWithIdToken()

The helper function automatically detects the iOS platform and configures everything appropriately.

Important Notes

Bundle ID Configuration

• iOS uses your Application’s Bundle ID automatically for Apple Sign-In
• Make sure your Bundle ID matches what’s configured in Apple Developer Portal
• The Bundle ID should have “Sign in with Apple” capability enabled

Supabase Client ID

In Supabase, configure your Apple provider with:

• Client ID: Your iOS App ID (bundle ID) - e.g., app.capgo.plugin.SocialLogin

If you’re also using Android/Web, you’ll need to provide both the Application ID and Service ID in Supabase’s Client ID field (comma-separated).

Dépannage

If authentication fails:

• Bundle ID mismatch: Verify your Bundle ID matches in both Xcode and Apple Developer Portal
• Capability not enabled: Ensure “Sign in with Apple” capability is enabled in Xcode
• Supabase Configuration: Verify your Application ID is correctly configured in Supabase Apple provider Paramètres
• Token validation fails: Vérifier that the identity token is being received from Apple
• Review the Exemple Application code for Référence