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<?php
declare(strict_types=1);
namespace OCA\AppAPI\Middleware;
use OC\Security\CSP\ContentSecurityPolicyNonceManager;
use OCA\AppAPI\Service\ExAppService;
use OCP\App\AppPathNotFoundException;
use OCP\App\IAppManager;
use OCP\AppFramework\Controller;
use OCP\AppFramework\Middleware;
use OCP\IRequest;
use OCP\L10N\IFactory;
use Psr\Log\LoggerInterface;
class ExAppUIL10NMiddleware extends Middleware {
private const routesToLoadL10N = [
'/files/',
'/settings/',
'/app_api/embedded/'
];
public function __construct(
protected IRequest $request,
private readonly IFactory $l10nFactory,
private readonly ContentSecurityPolicyNonceManager $nonceManager,
private readonly IAppManager $appManager,
private readonly ExAppService $exAppService,
private readonly LoggerInterface $logger,
) {
}
public function beforeOutput(Controller $controller, string $methodName, string $output) {
$url = $this->request->getRequestUri();
$loadL10N = false;
foreach (self::routesToLoadL10N as $route) {
$url = str_replace('/index.php', '', $url);
$url = str_replace('/apps', '', $url);
if (str_starts_with($url, $route)) {
$loadL10N = true;
break;
}
}
if (!$loadL10N) {
return $output;
}
/** @var array $exApp */
foreach ($this->exAppService->getExAppsList() as $exApp) {
$appId = $exApp['id'];
$lang = $this->l10nFactory->findLanguage($appId);
$availableLocales = $this->l10nFactory->findAvailableLanguages($appId);
if (in_array($lang, $availableLocales) && $lang !== 'en') {
$headPos = stripos($output, '</head>');
if ($headPos !== false) {
try {
$l10nScriptSrc = $this->appManager->getAppWebPath($appId) . '/l10n/' . $lang . '.js';
$nonce = $this->nonceManager->getNonce();
$output = substr_replace($output, '<script nonce="'.$nonce.'" defer src="' . $l10nScriptSrc . '"></script>', $headPos, 0);
} catch (AppPathNotFoundException) {
$this->logger->debug(sprintf('Can not find translations for %s ExApp.', $appId));
}
}
}
}
return $output;
}
}
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