resource provider and service improvements

shared/lib/Resource/Provider/ResourceServiceIdentityInterface.php

@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: Sebastian Krupinski <krupinski01@gmail.com>
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace KTXF\Resource\Provider;
+
+use KTXF\Json\JsonSerializable;
+
+/**
+ * Resource Service Identity Interface
+ * 
+ * Base interface for authentication credentials used by resource services.
+ * 
+ * @since 2025.05.01
+ */
+interface ResourceServiceIdentityInterface extends JsonSerializable {
+
+    public const TYPE_NONE = 'NA';
+    public const TYPE_BASIC = 'BA';
+    public const TYPE_BEARER = 'BR';
+    public const TYPE_OAUTH = 'OA';
+
+    /**
+     * Gets the identity/authentication type
+     * 
+     * @since 2025.05.01
+     * 
+     * @return string One of: TYPE_NONE, TYPE_BASIC, TYPE_BEARER, TYPE_OAUTH
+     */
+    public function type(): string;
+
+}