121 lines
3.5 KiB
PHP
121 lines
3.5 KiB
PHP
<?php
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declare(strict_types=1);
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/**
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* @copyright Copyright (c) 2023 Julius Härtl <jus@bitgrid.net>
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*
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* @author Julius Härtl <jus@bitgrid.net>
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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namespace OC\Translation;
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use InvalidArgumentException;
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use OC\AppFramework\Bootstrap\Coordinator;
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use OCP\IServerContainer;
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use OCP\PreConditionNotMetException;
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use OCP\Translation\IDetectLanguageProvider;
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use OCP\Translation\ITranslationManager;
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use OCP\Translation\ITranslationProvider;
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use Psr\Container\ContainerExceptionInterface;
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use Psr\Container\NotFoundExceptionInterface;
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use Psr\Log\LoggerInterface;
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use RuntimeException;
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use Throwable;
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class TranslationManager implements ITranslationManager {
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/** @var ?ITranslationProvider[] */
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private ?array $providers = null;
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public function __construct(
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private IServerContainer $serverContainer,
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private Coordinator $coordinator,
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private LoggerInterface $logger,
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) {
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}
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public function getLanguages(): array {
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$languages = [];
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foreach ($this->getProviders() as $provider) {
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$languages = array_merge($languages, $provider->getAvailableLanguages());
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}
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return $languages;
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}
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public function translate(string $text, ?string $fromLanguage, string $toLanguage): string {
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if (!$this->hasProviders()) {
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throw new PreConditionNotMetException('No translation providers available');
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}
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foreach ($this->getProviders() as $provider) {
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if ($fromLanguage === null && $provider instanceof IDetectLanguageProvider) {
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$fromLanguage = $provider->detectLanguage($text);
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}
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if ($fromLanguage === null) {
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throw new InvalidArgumentException('Could not detect language');
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}
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try {
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return $provider->translate($fromLanguage, $toLanguage, $text);
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} catch (RuntimeException $e) {
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$this->logger->warning("Failed to translate from {$fromLanguage} to {$toLanguage}", ['exception' => $e]);
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}
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}
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throw new RuntimeException('Could not translate text');
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}
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public function getProviders(): array {
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$context = $this->coordinator->getRegistrationContext();
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if ($this->providers !== null) {
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return $this->providers;
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}
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$this->providers = [];
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foreach ($context->getTranslationProviders() as $providerRegistration) {
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$class = $providerRegistration->getService();
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try {
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$this->providers[$class] = $this->serverContainer->get($class);
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} catch (NotFoundExceptionInterface|ContainerExceptionInterface|Throwable $e) {
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$this->logger->error('Failed to load translation provider ' . $class, [
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'exception' => $e
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]);
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}
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}
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return $this->providers;
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}
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public function hasProviders(): bool {
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$context = $this->coordinator->getRegistrationContext();
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return !empty($context->getTranslationProviders());
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}
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public function canDetectLanguage(): bool {
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foreach ($this->getProviders() as $provider) {
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if ($provider instanceof IDetectLanguageProvider) {
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return true;
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}
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}
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return false;
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}
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}
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