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lib/data/datasources/user_local_data_source.dart

@@ -0,0 +1,29 @@
+import 'package:shared_preferences/shared_preferences.dart';
+
+abstract class UserLocalDataSource {
+  Future<void> cacheUserToken(String token);
+  Future<String?> getCachedUserToken();
+  Future<void> clearCache();
+}
+
+class UserLocalDataSourceImpl implements UserLocalDataSource {
+  final SharedPreferences sharedPreferences;
+  static const String _tokenKey = 'user_token';
+
+  UserLocalDataSourceImpl({required this.sharedPreferences});
+
+  @override
+  Future<void> cacheUserToken(String token) async {
+    await sharedPreferences.setString(_tokenKey, token);
+  }
+
+  @override
+  Future<String?> getCachedUserToken() async {
+    return sharedPreferences.getString(_tokenKey);
+  }
+
+  @override
+  Future<void> clearCache() async {
+    await sharedPreferences.remove(_tokenKey);
+  }
+}