feat(caldav): expose calendar subscriptions

Signed-off-by: Daniel Kesselberg <mail@danielkesselberg.de>

1 files changed, 57 insertions, 0 deletions

diff --git a/apps/dav/lib/CalDAV/CachedSubscriptionProvider.php b/apps/dav/lib/CalDAV/CachedSubscriptionProvider.php
new file mode 100644
index 00000000000..e2508af5592
--- /dev/null
+++ b/apps/dav/lib/CalDAV/CachedSubscriptionProvider.php
@@ -0,0 +1,57 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright 2024 Daniel Kesselberg <mail@danielkesselberg.de>
+ *
+ * @author Daniel Kesselberg <mail@danielkesselberg.de>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+namespace OCA\DAV\CalDAV;
+
+use OCP\Calendar\ICalendarProvider;
+
+class CachedSubscriptionProvider implements ICalendarProvider {
+
+	public function __construct(
+		private CalDavBackend $calDavBackend
+	) {
+	}
+
+	public function getCalendars(string $principalUri, array $calendarUris = []): array {
+		$calendarInfos = $this->calDavBackend->getSubscriptionsForUser($principalUri);
+
+		if (count($calendarUris) > 0) {
+			$calendarInfos = array_filter($calendarInfos, fn (array $subscription) => in_array($subscription['uri'], $calendarUris));
+		}
+
+		$calendarInfos = array_values(array_filter($calendarInfos));
+
+		$iCalendars = [];
+		foreach ($calendarInfos as $calendarInfo) {
+			$calendar = new CachedSubscription($this->calDavBackend, $calendarInfo);
+			$iCalendars[] = new CachedSubscriptionImpl(
+				$calendar,
+				$calendarInfo,
+				$this->calDavBackend,
+			);
+		}
+		return $iCalendars;
+	}
+}