feat: add basic credentials

lib/definitions.dart

@@ -9,6 +9,7 @@
 ///
 /// [spec link]: https://www.w3.org/TR/wot-thing-description11/
 
+export 'src/definitions/credentials/basic_credentials.dart';
 export 'src/definitions/credentials/credentials.dart';
 export 'src/definitions/thing_description.dart';
 export 'src/definitions/thing_model.dart';

lib/src/core/consumed_thing.dart

@@ -6,10 +6,12 @@
 
 import '../../scripting_api.dart' as scripting_api;
 import '../../scripting_api.dart' hide ConsumedThing, InteractionOutput;
+import '../definitions/credentials/basic_credentials.dart';
 import '../definitions/credentials/credentials.dart';
 import '../definitions/data_schema.dart';
 import '../definitions/form.dart';
 import '../definitions/interaction_affordances/interaction_affordance.dart';
+import '../definitions/security/basic_security_scheme.dart';
 import '../definitions/security/security_scheme.dart';
 import '../definitions/thing_description.dart';
 import 'interaction_output.dart';
@@ -64,6 +66,10 @@ class ConsumedThing implements scripting_api.ConsumedThing {
     for (final entry in securityDefinitions.entries) {
       final credentials = credentialStore?[entry.key];
       final securityDefinition = entry.value;
+      if (securityDefinition is BasicSecurityScheme &&
+          credentials is BasicCredentials) {
+        securityDefinition.credentials = credentials;
+      }
     }
   }
 

lib/src/definitions/credentials/basic_credentials.dart

@@ -0,0 +1,21 @@
+// Copyright 2022 The NAMIB Project Developers. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+//
+// SPDX-License-Identifier: BSD-3-Clause
+
+import 'credentials.dart';
+
+/// [Credentials] used for the `BasicSecurityScheme`.
+///
+/// Provides an unencrypted [username] and [password] combination.
+class BasicCredentials extends Credentials {
+  /// The [username] associated with these [BasicCredentials].
+  String username;
+
+  /// The [password] associated with these [BasicCredentials].
+  String password;
+
+  /// Constructor.
+  BasicCredentials(this.username, this.password) : super("basic");
+}