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<?php
declare(strict_types=1);
/**
* SPDX-FileCopyrightText: 2018 Nextcloud GmbH and Nextcloud contributors
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
namespace OC\Calendar\Resource;
use OC\AppFramework\Bootstrap\Coordinator;
use OCP\Calendar\Resource\IBackend;
use OCP\Calendar\Resource\IManager;
use OCP\IServerContainer;
class Manager implements IManager {
private bool $bootstrapBackendsLoaded = false;
/**
* @var string[] holds all registered resource backends
* @psalm-var class-string<IBackend>[]
*/
private array $backends = [];
/** @var IBackend[] holds all backends that have been initialized already */
private array $initializedBackends = [];
public function __construct(
private Coordinator $bootstrapCoordinator,
private IServerContainer $server,
) {
}
/**
* Registers a resource backend
*
* @since 14.0.0
*/
public function registerBackend(string $backendClass): void {
$this->backends[$backendClass] = $backendClass;
}
/**
* Unregisters a resource backend
*
* @since 14.0.0
*/
public function unregisterBackend(string $backendClass): void {
unset($this->backends[$backendClass], $this->initializedBackends[$backendClass]);
}
private function fetchBootstrapBackends(): void {
if ($this->bootstrapBackendsLoaded) {
return;
}
$context = $this->bootstrapCoordinator->getRegistrationContext();
if ($context === null) {
// Too soon
return;
}
foreach ($context->getCalendarResourceBackendRegistrations() as $registration) {
$this->backends[] = $registration->getService();
}
}
/**
* @return IBackend[]
* @throws \OCP\AppFramework\QueryException
* @since 14.0.0
*/
public function getBackends():array {
$this->fetchBootstrapBackends();
foreach ($this->backends as $backend) {
if (isset($this->initializedBackends[$backend])) {
continue;
}
$this->initializedBackends[$backend] = $this->server->query($backend);
}
return array_values($this->initializedBackends);
}
/**
* @param string $backendId
* @throws \OCP\AppFramework\QueryException
*/
public function getBackend($backendId): ?IBackend {
$backends = $this->getBackends();
foreach ($backends as $backend) {
if ($backend->getBackendIdentifier() === $backendId) {
return $backend;
}
}
return null;
}
/**
* removes all registered backend instances
*
* @since 14.0.0
*/
public function clear(): void {
$this->backends = [];
$this->initializedBackends = [];
}
}
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