1 files changed, 40 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..d64f039d05b
--- /dev/null
+++ b/apps/dav/lib/CalDAV/CachedSubscriptionProvider.php
@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+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;
+	}
+}