init

app/code/Esun/FileManager/Model/Source/ExtensionOptions.php

@@ -0,0 +1,24 @@
+<?php
+declare(strict_types=1);
+
+namespace Esun\FileManager\Model\Source;
+
+use Esun\FileManager\Model\Config;
+use Magento\Framework\Data\OptionSourceInterface;
+
+class ExtensionOptions implements OptionSourceInterface
+{
+    public function __construct(private readonly Config $config)
+    {
+    }
+
+    public function toOptionArray(): array
+    {
+        $options = [];
+        foreach ($this->config->getAllowedExtensions() as $extension) {
+            $options[] = ['value' => $extension, 'label' => strtoupper($extension)];
+        }
+
+        return $options;
+    }
+}