1 files changed, 95 insertions, 0 deletions
diff --git a/apps/dav/lib/CardDAV/Activity/Provider/Base.php b/apps/dav/lib/CardDAV/Activity/Provider/Base.php
new file mode 100644
index 00000000000..ea7680aed60
--- /dev/null
+++ b/apps/dav/lib/CardDAV/Activity/Provider/Base.php
@@ -0,0 +1,95 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2021 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OCA\DAV\CardDAV\Activity\Provider;
+
+use OCA\DAV\CardDAV\CardDavBackend;
+use OCP\Activity\IEvent;
+use OCP\Activity\IProvider;
+use OCP\IGroup;
+use OCP\IGroupManager;
+use OCP\IL10N;
+use OCP\IURLGenerator;
+use OCP\IUserManager;
+
+abstract class Base implements IProvider {
+	/** @var string[] */
+	protected $userDisplayNames = [];
+
+	/** @var string[] */
+	protected $groupDisplayNames = [];
+
+	public function __construct(
+		protected IUserManager $userManager,
+		protected IGroupManager $groupManager,
+		protected IURLGenerator $url,
+	) {
+	}
+
+	protected function setSubjects(IEvent $event, string $subject, array $parameters): void {
+		$event->setRichSubject($subject, $parameters);
+	}
+
+	/**
+	 * @param array $data
+	 * @param IL10N $l
+	 * @return array
+	 */
+	protected function generateAddressbookParameter(array $data, IL10N $l): array {
+		if ($data['uri'] === CardDavBackend::PERSONAL_ADDRESSBOOK_URI
+			&& $data['name'] === CardDavBackend::PERSONAL_ADDRESSBOOK_NAME) {
+			return [
+				'type' => 'addressbook',
+				'id' => (string)$data['id'],
+				'name' => $l->t('Personal'),
+			];
+		}
+
+		return [
+			'type' => 'addressbook',
+			'id' => (string)$data['id'],
+			'name' => $data['name'],
+		];
+	}
+
+	protected function generateUserParameter(string $uid): array {
+		return [
+			'type' => 'user',
+			'id' => $uid,
+			'name' => $this->userManager->getDisplayName($uid) ?? $uid,
+		];
+	}
+
+	/**
+	 * @param string $gid
+	 * @return array
+	 */
+	protected function generateGroupParameter(string $gid): array {
+		if (!isset($this->groupDisplayNames[$gid])) {
+			$this->groupDisplayNames[$gid] = $this->getGroupDisplayName($gid);
+		}
+
+		return [
+			'type' => 'user-group',
+			'id' => $gid,
+			'name' => $this->groupDisplayNames[$gid],
+		];
+	}
+
+	/**
+	 * @param string $gid
+	 * @return string
+	 */
+	protected function getGroupDisplayName(string $gid): string {
+		$group = $this->groupManager->get($gid);
+		if ($group instanceof IGroup) {
+			return $group->getDisplayName();
+		}
+		return $gid;
+	}
+}