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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 OC\Core\Controller;
use InvalidArgumentException;
use OCP\AppFramework\Http;
use OCP\AppFramework\Http\Attribute\AnonRateLimit;
use OCP\AppFramework\Http\Attribute\ApiRoute;
use OCP\AppFramework\Http\Attribute\PublicPage;
use OCP\AppFramework\Http\Attribute\UserRateLimit;
use OCP\AppFramework\Http\DataResponse;
use OCP\IL10N;
use OCP\IRequest;
use OCP\PreConditionNotMetException;
use OCP\Translation\CouldNotTranslateException;
use OCP\Translation\ITranslationManager;
class TranslationApiController extends \OCP\AppFramework\OCSController {
public function __construct(
string $appName,
IRequest $request,
private ITranslationManager $translationManager,
private IL10N $l10n,
) {
parent::__construct($appName, $request);
}
/**
* Get the list of supported languages
*
* @return DataResponse<Http::STATUS_OK, array{languages: array{from: string, fromLabel: string, to: string, toLabel: string}[], languageDetection: bool}, array{}>
*
* 200: Supported languages returned
*/
#[PublicPage]
#[ApiRoute(verb: 'GET', url: '/languages', root: '/translation')]
public function languages(): DataResponse {
return new DataResponse([
'languages' => array_map(fn ($lang) => $lang->jsonSerialize(), $this->translationManager->getLanguages()),
'languageDetection' => $this->translationManager->canDetectLanguage(),
]);
}
/**
* Translate a text
*
* @param string $text Text to be translated
* @param string|null $fromLanguage Language to translate from
* @param string $toLanguage Language to translate to
* @return DataResponse<Http::STATUS_OK, array{text: string, from: ?string}, array{}>|DataResponse<Http::STATUS_BAD_REQUEST|Http::STATUS_PRECONDITION_FAILED|Http::STATUS_INTERNAL_SERVER_ERROR, array{message: string, from?: ?string}, array{}>
*
* 200: Translated text returned
* 400: Language not detected or unable to translate
* 412: Translating is not possible
*/
#[PublicPage]
#[UserRateLimit(limit: 25, period: 120)]
#[AnonRateLimit(limit: 10, period: 120)]
#[ApiRoute(verb: 'POST', url: '/translate', root: '/translation')]
public function translate(string $text, ?string $fromLanguage, string $toLanguage): DataResponse {
try {
$translation = $this->translationManager->translate($text, $fromLanguage, $toLanguage);
return new DataResponse([
'text' => $translation,
'from' => $fromLanguage,
]);
} catch (PreConditionNotMetException) {
return new DataResponse(['message' => $this->l10n->t('No translation provider available')], Http::STATUS_PRECONDITION_FAILED);
} catch (InvalidArgumentException) {
return new DataResponse(['message' => $this->l10n->t('Could not detect language')], Http::STATUS_BAD_REQUEST);
} catch (CouldNotTranslateException $e) {
return new DataResponse(['message' => $this->l10n->t('Unable to translate'), 'from' => $e->getFrom()], Http::STATUS_BAD_REQUEST);
}
}
}
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