Handle circle deletion event and add cleanup job

Signed-off-by: Julius Härtl <jus@bitgrid.net>

lib/AppInfo/Application.php

@@ -26,6 +26,7 @@ namespace OCA\Deck\AppInfo;
 use Closure;
 use Exception;
 use OC\EventDispatcher\SymfonyAdapter;
+use OCA\Circles\Events\CircleDestroyedEvent;
 use OCA\Deck\Activity\CommentEventHandler;
 use OCA\Deck\Capabilities;
 use OCA\Deck\Collaboration\Resources\ResourceProvider;
@@ -43,7 +44,9 @@ use OCA\Deck\Event\CardCreatedEvent;
 use OCA\Deck\Event\CardDeletedEvent;
 use OCA\Deck\Event\CardUpdatedEvent;
 use OCA\Deck\Listeners\BeforeTemplateRenderedListener;
+use OCA\Deck\Listeners\CircleEventListener;
 use OCA\Deck\Listeners\FullTextSearchEventListener;
+use OCA\Deck\Listeners\ResourceListener;
 use OCA\Deck\Middleware\DefaultBoardMiddleware;
 use OCA\Deck\Middleware\ExceptionMiddleware;
 use OCA\Deck\Notification\Notifier;
@@ -143,6 +146,12 @@ class Application extends App implements IBootstrap {
 		$context->registerEventListener(AclCreatedEvent::class, FullTextSearchEventListener::class);
 		$context->registerEventListener(AclUpdatedEvent::class, FullTextSearchEventListener::class);
 		$context->registerEventListener(AclDeletedEvent::class, FullTextSearchEventListener::class);
+
+		// Handling cache invalidation for collections
+		$context->registerEventListener(AclCreatedEvent::class, ResourceListener::class);
+		$context->registerEventListener(AclDeletedEvent::class, ResourceListener::class);
+
+		$context->registerEventListener(CircleDestroyedEvent::class, CircleEventListener::class);
 	}
 
 	public function registerNotifications(NotificationManager $notificationManager): void {

lib/Db/AclMapper.php

@@ -110,4 +110,12 @@ class AclMapper extends DeckMapper implements IPermissionMapper {
 			->andWhere($qb->expr()->eq('board_id', $qb->createNamedParameter($boardId, IQueryBuilder::PARAM_INT)));
 		$qb->executeStatement();
 	}
+
+	public function findByType(int $type): array {
+		$qb = $this->db->getQueryBuilder();
+		$qb->select('*')
+			->from('deck_board_acl')
+			->where($qb->expr()->eq('type', $qb->createNamedParameter($type, IQueryBuilder::PARAM_INT)));
+		return $this->findEntities($qb);
+	}
 }

lib/Listeners/CircleEventListener.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace OCA\Deck\Listeners;
+
+use OCA\Circles\Events\CircleDestroyedEvent;
+use OCA\Deck\Db\Acl;
+use OCA\Deck\Db\AclMapper;
+use OCA\Deck\Event\AclDeletedEvent;
+use OCP\EventDispatcher\Event;
+use OCP\EventDispatcher\IEventDispatcher;
+use OCP\EventDispatcher\IEventListener;
+
+class CircleEventListener implements IEventListener {
+
+	/** @var AclMapper */
+	private $aclMapper;
+
+	/** @var IEventDispatcher */
+	private $eventDispatcher;
+
+	public function __construct(AclMapper $aclMapper, IEventDispatcher $eventDispatcher) {
+		$this->aclMapper = $aclMapper;
+		$this->eventDispatcher = $eventDispatcher;
+	}
+
+	public function handle(Event $event): void {
+		if ($event instanceof CircleDestroyedEvent) {
+			$circleId = $event->getCircle()->getSingleId();
+			$acls = $this->aclMapper->findByParticipant(Acl::PERMISSION_TYPE_CIRCLE, $circleId);
+			foreach ($acls as $acl) {
+				$this->aclMapper->delete($acl);
+				$this->eventDispatcher->dispatchTyped(new AclDeletedEvent($acl));
+			}
+		}
+	}
+}

lib/Listeners/ResourceListener.php

@@ -0,0 +1,42 @@
+<?php
+
+namespace OCA\Deck\Listeners;
+
+use OCA\Deck\Collaboration\Resources\ResourceProvider;
+use OCA\Deck\Collaboration\Resources\ResourceProviderCard;
+use OCA\Deck\Event\AclCreatedEvent;
+use OCA\Deck\Event\AclDeletedEvent;
+use OCP\Collaboration\Resources\IManager;
+use OCP\Collaboration\Resources\ResourceException;
+use OCP\EventDispatcher\Event;
+use OCP\EventDispatcher\IEventListener;
+
+class ResourceListener implements IEventListener {
+
+	/** @var IManager */
+	private $resourceManager;
+	/** @var ResourceProviderCard */
+	private $resourceProviderCard;
+
+	public function __construct(IManager $resourceManager, ResourceProviderCard $resourceProviderCard) {
+		$this->resourceManager = $resourceManager;
+		$this->resourceProviderCard = $resourceProviderCard;
+	}
+
+	public function handle(Event $event): void {
+		if (!$event instanceof AclDeletedEvent && !$event instanceof AclCreatedEvent) {
+			return;
+		}
+
+		$boardId = $event->getAcl()->getBoardId();
+
+		$this->resourceManager->invalidateAccessCacheForProvider($this->resourceProviderCard);
+
+		try {
+			$resource = $this->resourceManager->getResourceForUser(ResourceProvider::RESOURCE_TYPE, $boardId, null);
+			$this->resourceManager->invalidateAccessCacheForResource($resource);
+		} catch (ResourceException $e) {
+			// If there is no resource we don't need to invalidate anything, but this should not happen anyways
+		}
+	}
+}

lib/Migration/DeletedCircleCleanup.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace OCA\Deck\Migration;
+
+use OCA\Deck\Db\Acl;
+use OCA\Deck\Db\AclMapper;
+use OCA\Deck\Service\CirclesService;
+use OCP\Migration\IOutput;
+use OCP\Migration\IRepairStep;
+
+class DeletedCircleCleanup implements IRepairStep {
+	private AclMapper $aclMapper;
+	private CirclesService $circleService;
+
+	public function __construct(AclMapper $aclMapper, CirclesService $circlesService) {
+		$this->aclMapper = $aclMapper;
+		$this->circleService = $circlesService;
+	}
+
+	public function getName() {
+		return 'Cleanup Deck ACL entries for circles which have been already deleted';
+	}
+
+	public function run(IOutput $output) {
+		if (!$this->circleService->isCirclesEnabled()) {
+			return;
+		}
+
+		foreach ($this->aclMapper->findByType(Acl::PERMISSION_TYPE_CIRCLE) as $acl) {
+			if ($this->circleService->getCircle($acl->getParticipant()) === null) {
+				$this->aclMapper->delete($acl);
+				$output->info('Removed circle with id ' . $acl->getParticipant());
+			}
+		}
+	}
+}