1 files changed, 113 insertions, 0 deletions
diff --git a/lib/private/Collaboration/Resources/Resource.php b/lib/private/Collaboration/Resources/Resource.php
new file mode 100644
index 00000000000..19da3da7e7d
--- /dev/null
+++ b/lib/private/Collaboration/Resources/Resource.php
@@ -0,0 +1,113 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2018 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OC\Collaboration\Resources;
+
+use OCP\Collaboration\Resources\ICollection;
+use OCP\Collaboration\Resources\IManager;
+use OCP\Collaboration\Resources\IResource;
+use OCP\IDBConnection;
+use OCP\IUser;
+
+class Resource implements IResource {
+	protected ?array $data = null;
+
+	public function __construct(
+		protected IManager $manager,
+		protected IDBConnection $connection,
+		protected string $type,
+		protected string $id,
+		protected ?IUser $userForAccess = null,
+		protected ?bool $access = null,
+	) {
+	}
+
+	/**
+	 * @since 16.0.0
+	 */
+	public function getType(): string {
+		return $this->type;
+	}
+
+	/**
+	 * @since 16.0.0
+	 */
+	public function getId(): string {
+		return $this->id;
+	}
+
+	/**
+	 * @since 16.0.0
+	 */
+	public function getRichObject(): array {
+		if ($this->data === null) {
+			$this->data = $this->manager->getResourceRichObject($this);
+		}
+
+		return $this->data;
+	}
+
+	/**
+	 * Can a user/guest access the resource
+	 *
+	 * @since 16.0.0
+	 */
+	public function canAccess(?IUser $user): bool {
+		if ($user instanceof IUser) {
+			return $this->canUserAccess($user);
+		}
+		return $this->canGuestAccess();
+	}
+
+	protected function canUserAccess(IUser $user): bool {
+		if (\is_bool($this->access) && $this->userForAccess instanceof IUser && $user->getUID() === $this->userForAccess->getUID()) {
+			return $this->access;
+		}
+
+		$access = $this->manager->canAccessResource($this, $user);
+		if ($this->userForAccess instanceof IUser && $user->getUID() === $this->userForAccess->getUID()) {
+			$this->access = $access;
+		}
+		return $access;
+	}
+
+	protected function canGuestAccess(): bool {
+		if (\is_bool($this->access) && !$this->userForAccess instanceof IUser) {
+			return $this->access;
+		}
+
+		$access = $this->manager->canAccessResource($this, null);
+		if (!$this->userForAccess instanceof IUser) {
+			$this->access = $access;
+		}
+		return $access;
+	}
+
+	/**
+	 * @return ICollection[]
+	 * @since 16.0.0
+	 */
+	public function getCollections(): array {
+		$collections = [];
+
+		$query = $this->connection->getQueryBuilder();
+
+		$query->select('collection_id')
+			->from('collres_resources')
+			->where($query->expr()->eq('resource_type', $query->createNamedParameter($this->getType())))
+			->andWhere($query->expr()->eq('resource_id', $query->createNamedParameter($this->getId())));
+
+		$result = $query->execute();
+		while ($row = $result->fetch()) {
+			$collections[] = $this->manager->getCollection((int)$row['collection_id']);
+		}
+		$result->closeCursor();
+
+		return $collections;
+	}
+}