Init login feature add data layer

lib/features/login/data/repository/authentication_repository_impl.dart

@@ -0,0 +1,14 @@
+import 'package:model/model.dart';
+import 'package:tmail_ui_user/features/login/data/datasource/atuthentitcation_datasource.dart';
+import 'package:tmail_ui_user/features/login/domain/repository/authentication_repository.dart';
+
+class AuthenticationRepositoryImpl extends AuthenticationRepository {
+  final AuthenticationDataSource loginDataSource;
+
+  AuthenticationRepositoryImpl(this.loginDataSource);
+
+  @override
+  Future<User> authenticationUser(Uri baseUrl, UserName userName, Password password) {
+    return Future.value(User(UserId(userName.userName), "Alice", "Alice"));
+  }
+}

lib/features/login/data/repository/credential_repository_impl.dart

@@ -0,0 +1,56 @@
+import 'package:model/model.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'package:tmail_ui_user/features/login/data/utils/login_constant.dart';
+import 'package:tmail_ui_user/features/login/domain/repository/credential_repository.dart';
+
+class CredentialRepositoryImpl extends CredentialRepository {
+
+  final SharedPreferences sharedPreferences;
+
+  CredentialRepositoryImpl(this.sharedPreferences);
+
+  @override
+  Future<Uri> getBaseUrl() async {
+    return Uri.parse(sharedPreferences.getString(LoginConstant.keyBaseUrl) ?? '');
+  }
+
+  @override
+  Future saveBaseUrl(Uri baseUrl) async {
+    await sharedPreferences.setString(LoginConstant.keyBaseUrl, baseUrl.origin);
+  }
+
+  @override
+  Future removeBaseUrl() async {
+    await sharedPreferences.remove(LoginConstant.keyBaseUrl);
+  }
+
+  @override
+  Future<Password> getPassword() async {
+    return Password(sharedPreferences.getString(LoginConstant.keyPassword) ?? '');
+  }
+
+  @override
+  Future removePassword() async {
+    await sharedPreferences.remove(LoginConstant.keyPassword);
+  }
+
+  @override
+  Future savePassword(Password password) async {
+    await sharedPreferences.setString(LoginConstant.keyPassword, password.value);
+  }
+
+  @override
+  Future<UserName> getUserName() async {
+    return UserName(sharedPreferences.getString(LoginConstant.keyUserName) ?? '');
+  }
+
+  @override
+  Future removeUserName() async {
+    await sharedPreferences.remove(LoginConstant.keyUserName);
+  }
+
+  @override
+  Future saveUserName(UserName userName) async {
+    await sharedPreferences.setString(LoginConstant.keyUserName, userName.userName);
+  }
+}