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<?php
declare(strict_types=1);
/**
* SPDX-FileCopyrightText: 2022 Nextcloud GmbH and Nextcloud contributors
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
namespace OCA\Theming\Listener;
use OCA\Theming\AppInfo\Application;
use OCP\App\IAppManager;
use OCP\Config\BeforePreferenceDeletedEvent;
use OCP\Config\BeforePreferenceSetEvent;
use OCP\EventDispatcher\Event;
use OCP\EventDispatcher\IEventListener;
/** @template-implements IEventListener<BeforePreferenceDeletedEvent|BeforePreferenceSetEvent> */
class BeforePreferenceListener implements IEventListener {
/**
* @var string[]
*/
private const ALLOWED_KEYS = ['force_enable_blur_filter', 'shortcuts_disabled', 'primary_color'];
public function __construct(
private IAppManager $appManager,
) {
}
public function handle(Event $event): void {
if (!$event instanceof BeforePreferenceSetEvent
&& !$event instanceof BeforePreferenceDeletedEvent) {
// Invalid event type
return;
}
switch ($event->getAppId()) {
case Application::APP_ID: $this->handleThemingValues($event);
break;
case 'core': $this->handleCoreValues($event);
break;
}
}
private function handleThemingValues(BeforePreferenceSetEvent|BeforePreferenceDeletedEvent $event): void {
if (!in_array($event->getConfigKey(), self::ALLOWED_KEYS)) {
// Not allowed config key
return;
}
if ($event instanceof BeforePreferenceSetEvent) {
switch ($event->getConfigKey()) {
case 'force_enable_blur_filter':
$event->setValid($event->getConfigValue() === 'yes' || $event->getConfigValue() === 'no');
break;
case 'shortcuts_disabled':
$event->setValid($event->getConfigValue() === 'yes');
break;
case 'primary_color':
$event->setValid(preg_match('/^\#([0-9a-f]{3}|[0-9a-f]{6})$/i', $event->getConfigValue()) === 1);
break;
default:
$event->setValid(false);
}
return;
}
$event->setValid(true);
}
private function handleCoreValues(BeforePreferenceSetEvent|BeforePreferenceDeletedEvent $event): void {
if ($event->getConfigKey() !== 'apporder') {
// Not allowed config key
return;
}
if ($event instanceof BeforePreferenceDeletedEvent) {
$event->setValid(true);
return;
}
$value = json_decode($event->getConfigValue(), true, flags:JSON_THROW_ON_ERROR);
if (!is_array(($value))) {
// Must be an array
return;
}
foreach ($value as $id => $info) {
// required format: [ navigation_id: string => [ order: int, app?: string ] ]
if (!is_string($id) || !is_array($info) || empty($info) || !isset($info['order']) || !is_numeric($info['order']) || (isset($info['app']) && !$this->appManager->isEnabledForUser($info['app']))) {
// Invalid config value, refuse the change
return;
}
}
$event->setValid(true);
}
}
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