Handle circle deletion event and add cleanup job

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

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
+		}
+	}
+}