nextcloud/lib/private/InitialStateService.php

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<?php
declare(strict_types=1);
/**
* @copyright Copyright (c) 2019, Roeland Jago Douma <roeland@famdouma.nl>
*
* @author Roeland Jago Douma <roeland@famdouma.nl>
*
* @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 OC;
use OCP\IInitialStateService;
use OCP\ILogger;
class InitialStateService implements IInitialStateService {
/** @var ILogger */
private $logger;
/** @var array */
private $states = [];
/** @var array */
private $lazyStates = [];
public function __construct(ILogger $logger) {
$this->logger = $logger;
}
public function provideInitialState(string $appName, $data) {
// Scalars and JsonSerializable are fine
if (is_scalar($data) || $data instanceof \JsonSerializable || is_array($data)) {
$this->states[$appName] = json_encode($data);
return;
}
$this->logger->warning('Invalid data provided to provideInitialState by ' . $appName);
}
public function provideLazyInitialState(string $appName, \Closure $closure) {
$this->lazyStates[$appName] = $closure;
}
public function getInitialStates(): array {
$states = $this->states;
foreach ($this->lazyStates as $app => $lazyState) {
$state = $lazyState();
if (!($lazyState instanceof \JsonSerializable)) {
$this->logger->warning($app . ' provided an invalid lazy state');
}
$states[$app] = json_encode($state);
}
return $states;
}
}