Upgrade oauth2-server to 8.0.0 version, rewrite repositories and entities, start rewriting tests. Intermediate commit [skip ci]

api/components/OAuth2/Repositories/ClientRepository.php

@@ -0,0 +1,41 @@
+<?php
+declare(strict_types=1);
+
+namespace api\components\OAuth2\Repositories;
+
+use api\components\OAuth2\Entities\ClientEntity;
+use common\models\OauthClient;
+use League\OAuth2\Server\Entities\ClientEntityInterface;
+use League\OAuth2\Server\Repositories\ClientRepositoryInterface;
+
+class ClientRepository implements ClientRepositoryInterface {
+
+    public function getClientEntity($clientId): ?ClientEntityInterface {
+        $client = $this->findModel($clientId);
+        if ($client === null) {
+            return null;
+        }
+
+        return new ClientEntity($client->id, $client->name, $client->redirect_uri, (bool)$client->is_trusted);
+    }
+
+    public function validateClient($clientId, $clientSecret, $grantType): bool {
+        $client = $this->findModel($clientId);
+        if ($client === null) {
+            return false;
+        }
+
+        if ($clientSecret !== null && $clientSecret !== $client->secret) {
+            return false;
+        }
+
+        // TODO: there is missing behavior of checking redirectUri. Is it now bundled into grant?
+
+        return true;
+    }
+
+    private function findModel(string $id): ?OauthClient {
+        return OauthClient::findOne(['id' => $id]);
+    }
+
+}