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administrator/components/com_jchoptimize/lib/src/ControllerResolver.php

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+<?php
+
+/**
+ * JCH Optimize - Performs several front-end optimizations for fast downloads.
+ *
+ * @author    Samuel Marshall <samuel@jch-optimize.net>
+ * @copyright Copyright (c) 2021 Samuel Marshall / JCH Optimize
+ * @license   GNU/GPLv3, or later. See LICENSE file
+ *
+ * If LICENSE file missing, see <http://www.gnu.org/licenses/>.
+ */
+
+namespace JchOptimize;
+
+use _JchOptimizeVendor\Psr\Container\ContainerExceptionInterface;
+use _JchOptimizeVendor\Psr\Container\ContainerInterface;
+use _JchOptimizeVendor\Psr\Container\NotFoundExceptionInterface;
+use Joomla\Input\Input;
+
+\defined('_JEXEC') or exit('Restricted access');
+class ControllerResolver
+{
+    private ContainerInterface $container;
+
+    private Input $input;
+
+    public function __construct(ContainerInterface $container, Input $input)
+    {
+        $this->container = $container;
+        $this->input = $input;
+    }
+
+    public function resolve()
+    {
+        $controller = $this->getController();
+        if ($this->container->has($controller)) {
+            try {
+                \call_user_func([$this->container->get($controller), 'execute']);
+            } catch (NotFoundExceptionInterface|ContainerExceptionInterface $e) {
+                throw new \InvalidArgumentException(\sprintf('Controller %s not found', $controller));
+            }
+        } else {
+            throw new \InvalidArgumentException(\sprintf('Cannot resolve controller: %s', $controller));
+        }
+    }
+
+    private function getController(): string
+    {
+        // @var string
+        return $this->input->get('view', 'ControlPanel');
+    }
+}