first commit

lib/core/services/storage_service.dart

@@ -0,0 +1,27 @@
+import 'package:flutter_secure_storage/flutter_secure_storage.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+final storageServiceProvider = Provider<StorageService>((ref) {
+  return const StorageService(FlutterSecureStorage());
+});
+
+class StorageService {
+  const StorageService(this._storage);
+  final FlutterSecureStorage _storage;
+
+  Future<void> write(String key, String value) async {
+    await _storage.write(key: key, value: value);
+  }
+
+  Future<String?> read(String key) async {
+    return await _storage.read(key: key);
+  }
+
+  Future<void> delete(String key) async {
+    await _storage.delete(key: key);
+  }
+
+  Future<void> clearAll() async {
+    await _storage.deleteAll();
+  }
+}