Add a reference to the used info provider to a part

src/Twig/InfoProviderExtension.php

@@ -0,0 +1,72 @@
+<?php
+/*
+ * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
+ *
+ *  Copyright (C) 2019 - 2023 Jan Böhmer (https://github.com/jbtronics)
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU Affero General Public License as published
+ *  by the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Affero General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Affero General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+declare(strict_types=1);
+
+
+namespace App\Twig;
+
+use App\Services\InfoProviderSystem\ProviderRegistry;
+use App\Services\InfoProviderSystem\Providers\InfoProviderInterface;
+use Twig\Extension\AbstractExtension;
+use Twig\TwigFunction;
+
+class InfoProviderExtension extends AbstractExtension
+{
+    public function __construct(
+        private readonly ProviderRegistry $providerRegistry
+    ) {}
+
+    public function getFunctions(): array
+    {
+        return [
+            new TwigFunction('info_provider', $this->getInfoProvider(...)),
+            new TwigFunction('info_provider_label', $this->getInfoProviderName(...))
+        ];
+    }
+
+    /**
+     * Gets the info provider with the given key. Returns null, if the provider does not exist.
+     * @param  string  $key
+     * @return InfoProviderInterface|null
+     */
+    private function getInfoProvider(string $key): ?InfoProviderInterface
+    {
+        try {
+            return $this->providerRegistry->getProviderByKey($key);
+        }  catch (\InvalidArgumentException $exception) {
+            return null;
+        }
+    }
+
+    /**
+     * Gets the label of the info provider with the given key. Returns null, if the provider does not exist.
+     * @param  string  $key
+     * @return string|null
+     */
+    private function getInfoProviderName(string $key): ?string
+    {
+        try {
+            return $this->providerRegistry->getProviderByKey($key)->getProviderInfo()['name'];
+        }  catch (\InvalidArgumentException $exception) {
+            return null;
+        }
+    }
+}