biometricPermission&Authentication

lib/features/auth/controllers/auth_cubit.dart

@@ -1,4 +1,10 @@
 import 'package:bloc/bloc.dart';
+import 'package:flutter/cupertino.dart';
+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+import 'package:local_auth/local_auth.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import '../../../app.dart';
 import '../../../data/repositories/auth_repository.dart';
 import 'auth_state.dart';
 
@@ -47,4 +53,60 @@ class AuthCubit extends Cubit<AuthState> {
       emit(AuthError(e.toString()));
     }
   }
+
+  Future<void> checkFirstLaunch() async {
+    SharedPreferences prefs = await SharedPreferences.getInstance();
+    final isFirstLaunch = prefs.getBool('isFirstLaunch') ?? true;
+
+    if (isFirstLaunch) {
+      emit(ShowBiometricPermission());
+    } else {
+      // Continue to authentication logic (e.g., check token)
+      emit(AuthLoading()); // or Unauthenticated/Authenticated
+    }
+  }
+
+  Future<void> handleBiometricChoice(bool enabled) async {
+    SharedPreferences prefs = await SharedPreferences.getInstance();
+    await prefs.setBool('biometric_opt_in', enabled);
+    await prefs.setBool('isFirstLaunch', false);
+
+    // Then continue to auth logic or home
+    if (enabled) {
+      authenticateBiometric(); // implement biometric logic
+    } else {
+      emit(Unauthenticated());
+    }
+  }
+
+  Future<void> authenticateBiometric() async {
+    final LocalAuthentication auth = LocalAuthentication();
+
+    try {
+      final isAvailable = await auth.canCheckBiometrics;
+      final isDeviceSupported = await auth.isDeviceSupported();
+
+      if (isAvailable && isDeviceSupported) {
+        final authenticated = await auth.authenticate(
+          localizedReason: 'Touch the fingerprint sensor',
+          options: const AuthenticationOptions(
+            biometricOnly: true,
+            stickyAuth: true,
+          ),
+        );
+
+        if (authenticated) {
+          // Continue to normal auth logic (e.g., auto login)
+          emit(AuthLoading());
+          await checkAuthStatus(); // Your existing method to verify token/session
+        } else {
+          emit(Unauthenticated());
+        }
+      } else {
+        emit(Unauthenticated());
+      }
+    } catch (e) {
+      emit(Unauthenticated());
+    }
+  }
 }

lib/features/auth/controllers/auth_state.dart

@@ -10,6 +10,8 @@ class AuthInitial extends AuthState {}
 
 class AuthLoading extends AuthState {}
 
+class ShowBiometricPermission extends AuthState {}
+
 class Authenticated extends AuthState {
   final User user;