feat(caldav): create subscriptions via occ

apps/dav/appinfo/info.xml

@@ -54,6 +54,7 @@
 	<commands>
 		<command>OCA\DAV\Command\CreateAddressBook</command>
 		<command>OCA\DAV\Command\CreateCalendar</command>
+		<command>OCA\DAV\Command\CreateSubscription</command>
 		<command>OCA\DAV\Command\DeleteCalendar</command>
 		<command>OCA\DAV\Command\FixCalendarSyncCommand</command>
 		<command>OCA\DAV\Command\MoveCalendar</command>

apps/dav/composer/composer/autoload_classmap.php

@@ -153,6 +153,7 @@
     'OCA\\DAV\\CardDAV\\Xml\\Groups' => $baseDir . '/../lib/CardDAV/Xml/Groups.php',
     'OCA\\DAV\\Command\\CreateAddressBook' => $baseDir . '/../lib/Command/CreateAddressBook.php',
     'OCA\\DAV\\Command\\CreateCalendar' => $baseDir . '/../lib/Command/CreateCalendar.php',
+    'OCA\\DAV\\Command\\CreateSubscription' => $baseDir . '/../lib/Command/CreateSubscription.php',
     'OCA\\DAV\\Command\\DeleteCalendar' => $baseDir . '/../lib/Command/DeleteCalendar.php',
     'OCA\\DAV\\Command\\FixCalendarSyncCommand' => $baseDir . '/../lib/Command/FixCalendarSyncCommand.php',
     'OCA\\DAV\\Command\\ListCalendars' => $baseDir . '/../lib/Command/ListCalendars.php',

apps/dav/composer/composer/autoload_static.php

@@ -168,6 +168,7 @@ class ComposerStaticInitDAV
         'OCA\\DAV\\CardDAV\\Xml\\Groups' => __DIR__ . '/..' . '/../lib/CardDAV/Xml/Groups.php',
         'OCA\\DAV\\Command\\CreateAddressBook' => __DIR__ . '/..' . '/../lib/Command/CreateAddressBook.php',
         'OCA\\DAV\\Command\\CreateCalendar' => __DIR__ . '/..' . '/../lib/Command/CreateCalendar.php',
+        'OCA\\DAV\\Command\\CreateSubscription' => __DIR__ . '/..' . '/../lib/Command/CreateSubscription.php',
         'OCA\\DAV\\Command\\DeleteCalendar' => __DIR__ . '/..' . '/../lib/Command/DeleteCalendar.php',
         'OCA\\DAV\\Command\\FixCalendarSyncCommand' => __DIR__ . '/..' . '/../lib/Command/FixCalendarSyncCommand.php',
         'OCA\\DAV\\Command\\ListCalendars' => __DIR__ . '/..' . '/../lib/Command/ListCalendars.php',

apps/dav/lib/Command/CreateSubscription.php

@@ -0,0 +1,78 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+namespace OCA\DAV\Command;
+
+use OCA\DAV\CalDAV\CalDavBackend;
+use OCA\Theming\ThemingDefaults;
+use OCP\IUserManager;
+use Sabre\DAV\Xml\Property\Href;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+
+class CreateSubscription extends Command {
+	public function __construct(
+		protected IUserManager $userManager,
+		private CalDavBackend $caldav,
+		private ThemingDefaults $themingDefaults,
+	) {
+		parent::__construct();
+	}
+
+	protected function configure(): void {
+		$this
+			->setName('dav:create-subscription')
+			->setDescription('Create a dav subscription')
+			->addArgument('user',
+				InputArgument::REQUIRED,
+				'User for whom the subscription will be created')
+			->addArgument('name',
+				InputArgument::REQUIRED,
+				'Name of the subscription to create')
+			->addArgument('url',
+				InputArgument::REQUIRED,
+				'Source url of the subscription to create')
+			->addArgument('color',
+				InputArgument::OPTIONAL,
+				'Hex color code for the calendar color');
+	}
+
+	protected function execute(InputInterface $input, OutputInterface $output): int {
+		$user = $input->getArgument('user');
+		if (!$this->userManager->userExists($user)) {
+			$output->writeln("<error>User <$user> in unknown.</error>");
+			return self::FAILURE;
+		}
+
+		$name = $input->getArgument('name');
+		$url = $input->getArgument('url');
+		$color = $input->getArgument('color') ?? $this->themingDefaults->getColorPrimary();
+		$subscriptions = $this->caldav->getSubscriptionsForUser("principals/users/$user");
+
+		$exists = array_filter($subscriptions, function ($row) use ($url) {
+			return $row['source'] === $url;
+		});
+
+		if (!empty($exists)) {
+			$output->writeln("<error>Subscription for url <$url> already exists for this user.</error>");
+			return self::FAILURE;
+		}
+
+		$urlProperty = new Href($url);
+		$properties = ['{http://owncloud.org/ns}calendar-enabled' => 1,
+			'{DAV:}displayname' => $name,
+			'{http://apple.com/ns/ical/}calendar-color' => $color,
+			'{http://calendarserver.org/ns/}source' => $urlProperty,
+		];
+		$this->caldav->createSubscription("principals/users/$user", $name, $properties);
+		return self::SUCCESS;
+	}
+
+}