📱 Supabase Authentication Demo (Flutter)

This Flutter project demonstrates the basic usage of Supabase Authentication with:

• ✅ Email/Password Sign Up
• ✅ Email/Password Login
• ✅ Email Verification Check
• ✅ Google Sign-In
• ✅ Phone Number OTP Verification

---

🚀 Features

• Sign in with Google
• Sign up & Sign in with Email/Password
• Check if Email is Verified
• Verify Phone Number OTP
• Option to check for Phone Verification after Login

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🛠 Setup Guide

1️⃣ Prerequisites

• Flutter SDK installed
• Supabase project created — https://app.supabase.com/
• Google Cloud Project with OAuth Consent configured — https://console.cloud.google.com/

---

2️⃣ Configure Supabase

Add the package to your pubspec.yaml file:

dependencies:
  flutter:
    sdk: flutter
  supabase_flutter: <latest version>
  google_sign_in: <latest version>
  supabase_auth_package: <latest version>

---

✅ In main.dart:

Supabase.initialize(
    url: 'your-supabase-url',
    anonKey: 'your-anon-key',
  );

✅ Email/Password Sign-In Example

await _authRepo.signInUsingEmailPassword(
  email: 'user@example.com',
  password: 'your-password',
  checkPhoneVerification: false,
);

✅ Google Sign-In Example

Future<void> _signInWithGoogle() async {
  final googleService = GoogleAuthService(
    supabaseClient: Supabase.instance.client,
    googleSignIn: GoogleSignIn(
      serverClientId: 'your-google-server-client-id', // Replace with your client ID
    ),
  );

  await googleService.signIn();
}

✅ Email/Password Sign-Up Example

Future<void> _signUpWithEmail() async {
  await _authRepo.signUpUsingEmailPassword(
    email: 'user@example.com',      // Replace with user email
    password: 'your-password',      // Replace with user password
  );
}

✅ Check Email Verification Example

Future<void> _checkEmailVerification() async {
  await _authRepo.checkEmailVerify(
    email: 'user@example.com',      // Replace with user email
    password: 'your-password',      // Replace with user password
  );
}

✅ Verify Phone OTP Example

Future<void> _checkOtpVerification() async {
  await _authRepo.verifyOTP(
    countryCode: '91',             // Country Code (e.g., India = 91)
    phoneNumber: '9876543210',     // User phone number without country code
    otp: '123456',                 // OTP received by user
  );
}