Adding a message on disabling external storage without disabling hejb… (#143)

* Adding a message on disabling external storage without disabling hejbit plug-in

* chore: fix code style

* Using BaseException  instead of Exception

* chore: fix code style

---------

Co-authored-by: JoaoSRaposo <[email protected]>

Author: JoaoSRaposo

lib/AppInfo/Application.php

@@ -25,7 +25,9 @@
 
 use OC\Security\CSP\ContentSecurityPolicy;
 use OCA\Files\Event\LoadAdditionalScriptsEvent;
+use OCA\Files_External_Ethswarm\Listener\PreventExternalStorageDisableListener;
 use OCA\Files_External_Ethswarm\Utils\Env;
+use OCP\App\Events\AppDisableEvent;
 use OCP\AppFramework\Bootstrap\IBootContext;
 use OCP\AppFramework\Bootstrap\IRegistrationContext;
 use OCP\EventDispatcher\IEventDispatcher;
@@ -56,6 +58,12 @@ public function boot(IBootContext $context): void {
 	public function register(IRegistrationContext $context): void {
 		$this->loadTelemetry();
 
+		// Register the listener to prevent files_external from being disabled
+		$context->registerEventListener(
+			AppDisableEvent::class,
+			PreventExternalStorageDisableListener::class
+		);
+
 		/** @var IEventDispatcher $dispatcher */
 		$dispatcher = $this->container->get(IEventDispatcher::class);
 		$dispatcher->addListener(

lib/Listener/PreventExternalStorageDisableListener.php

@@ -0,0 +1,42 @@
+<?php
+
+namespace OCA\Files_External_Ethswarm\Listener;
+
+use Exception;
+use OCA\Files_External_Ethswarm\Exception\BaseException;
+use OCP\App\Events\AppDisableEvent;
+use OCP\App\IAppManager;
+use OCP\EventDispatcher\Event;
+use OCP\EventDispatcher\IEventListener;
+use Psr\Log\LoggerInterface;
+
+class PreventExternalStorageDisableListener implements IEventListener {
+	private IAppManager $appManager;
+	private LoggerInterface $logger;
+
+	public function __construct(
+		IAppManager $appManager,
+		LoggerInterface $logger
+	) {
+		$this->appManager = $appManager;
+		$this->logger = $logger;
+	}
+
+	public function handle(Event $event): void {
+		if (!$event instanceof AppDisableEvent) {
+			return;
+		}
+
+		$appId = $event->getAppId();
+
+		// Check if files_external is being disabled while our app is enabled
+		if ('files_external' === $appId && $this->appManager->isEnabledForUser('files_external_ethswarm')) {
+			$message = 'Cannot disable External Storage app while HejBit Swarm plugin is enabled. Please disable HejBit Swarm plugin first.';
+
+			$this->logger->warning($message);
+
+			// Throw an exception to prevent the disable and show error message
+			throw new BaseException($message);
+		}
+	}
+}