1 files changed, 140 insertions, 0 deletions
diff --git a/lib/public/AppFramework/App.php b/lib/public/AppFramework/App.php
new file mode 100644
index 00000000000..c00fde47418
--- /dev/null
+++ b/lib/public/AppFramework/App.php
@@ -0,0 +1,140 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-FileCopyrightText: 2016 ownCloud, Inc.
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+namespace OCP\AppFramework;
+
+use OC\AppFramework\Utility\SimpleContainer;
+use OC\ServerContainer;
+use OCP\IConfig;
+use OCP\Server;
+use Psr\Log\LoggerInterface;
+
+/**
+ * Class App
+ *
+ * Any application must inherit this call - all controller instances to be used are
+ * to be registered using IContainer::registerService
+ * @since 6.0.0
+ */
+class App {
+	/** @var IAppContainer */
+	private $container;
+
+	/**
+	 * Turns an app id into a namespace by convention. The id is split at the
+	 * underscores, all parts are CamelCased and reassembled. e.g.:
+	 * some_app_id -> OCA\SomeAppId
+	 * @param string $appId the app id
+	 * @param string $topNamespace the namespace which should be prepended to
+	 *                             the transformed app id, defaults to OCA\
+	 * @return string the starting namespace for the app
+	 * @since 8.0.0
+	 */
+	public static function buildAppNamespace(string $appId, string $topNamespace = 'OCA\\'): string {
+		return \OC\AppFramework\App::buildAppNamespace($appId, $topNamespace);
+	}
+
+
+	/**
+	 * @param string $appName
+	 * @param array $urlParams an array with variables extracted from the routes
+	 * @since 6.0.0
+	 */
+	public function __construct(string $appName, array $urlParams = []) {
+		$runIsSetupDirectly = Server::get(IConfig::class)->getSystemValueBool('debug')
+			&& !ini_get('zend.exception_ignore_args');
+
+		if ($runIsSetupDirectly) {
+			$applicationClassName = get_class($this);
+			$e = new \RuntimeException('App class ' . $applicationClassName . ' is not setup via query() but directly');
+			$setUpViaQuery = false;
+
+			$classNameParts = explode('\\', trim($applicationClassName, '\\'));
+
+			foreach ($e->getTrace() as $step) {
+				if (isset($step['class'], $step['function'], $step['args'][0])
+					&& $step['class'] === ServerContainer::class
+					&& $step['function'] === 'query'
+					&& $step['args'][0] === $applicationClassName) {
+					$setUpViaQuery = true;
+					break;
+				} elseif (isset($step['class'], $step['function'], $step['args'][0])
+					&& $step['class'] === ServerContainer::class
+					&& $step['function'] === 'getAppContainer'
+					&& $step['args'][1] === $classNameParts[1]) {
+					$setUpViaQuery = true;
+					break;
+				} elseif (isset($step['class'], $step['function'], $step['args'][0])
+					&& $step['class'] === SimpleContainer::class
+					&& preg_match('/{closure:OC\\\\AppFramework\\\\Utility\\\\SimpleContainer::buildClass\\(\\):\\d+}/', $step['function'])
+					&& $step['args'][0] === $this) {
+					/* We are setup through a lazy ghost, fine */
+					$setUpViaQuery = true;
+					break;
+				}
+			}
+
+			if (!$setUpViaQuery && $applicationClassName !== \OCP\AppFramework\App::class) {
+				Server::get(LoggerInterface::class)->error($e->getMessage(), [
+					'app' => $appName,
+					'exception' => $e,
+				]);
+			}
+		}
+
+		try {
+			$this->container = \OC::$server->getRegisteredAppContainer($appName);
+		} catch (QueryException $e) {
+			$this->container = new \OC\AppFramework\DependencyInjection\DIContainer($appName, $urlParams);
+		}
+	}
+
+	/**
+	 * @return IAppContainer
+	 * @since 6.0.0
+	 */
+	public function getContainer(): IAppContainer {
+		return $this->container;
+	}
+
+	/**
+	 * This function is called by the routing component to fire up the frameworks dispatch mechanism.
+	 *
+	 * Example code in routes.php of the task app:
+	 * $this->create('tasks_index', '/')->get()->action(
+	 *		function($params){
+	 *			$app = new TaskApp($params);
+	 *			$app->dispatch('PageController', 'index');
+	 *		}
+	 *	);
+	 *
+	 *
+	 * Example for for TaskApp implementation:
+	 * class TaskApp extends \OCP\AppFramework\App {
+	 *
+	 *		public function __construct($params){
+	 *			parent::__construct('tasks', $params);
+	 *
+	 *			$this->getContainer()->registerService('PageController', function(IAppContainer $c){
+	 *				$a = $c->query('API');
+	 *				$r = $c->query('Request');
+	 *				return new PageController($a, $r);
+	 *			});
+	 *		}
+	 *	}
+	 *
+	 * @param string $controllerName the name of the controller under which it is
+	 *                               stored in the DI container
+	 * @param string $methodName the method that you want to call
+	 * @since 6.0.0
+	 */
+	public function dispatch(string $controllerName, string $methodName) {
+		\OC\AppFramework\App::main($controllerName, $methodName, $this->container);
+	}
+}