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<?php
declare(strict_types=1);
/**
* @copyright Copyright (c) 2023 Julius Härtl <jus@bitgrid.net>
* @copyright Copyright (c) 2023 Marcel Klehr <mklehr@gmx.net>
*
* @author Julius Härtl <jus@bitgrid.net>
* @author Marcel Klehr <mklehr@gmx.net>
*
* @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\SpeechToText;
use InvalidArgumentException;
use OC\AppFramework\Bootstrap\Coordinator;
use OCP\BackgroundJob\IJobList;
use OCP\Files\File;
use OCP\Files\InvalidPathException;
use OCP\Files\NotFoundException;
use OCP\IServerContainer;
use OCP\PreConditionNotMetException;
use OCP\SpeechToText\ISpeechToTextManager;
use OCP\SpeechToText\ISpeechToTextProvider;
use Psr\Container\ContainerExceptionInterface;
use Psr\Container\NotFoundExceptionInterface;
use Psr\Log\LoggerInterface;
use RuntimeException;
use Throwable;
class SpeechToTextManager implements ISpeechToTextManager {
/** @var ?ISpeechToTextProvider[] */
private ?array $providers = null;
public function __construct(
private IServerContainer $serverContainer,
private Coordinator $coordinator,
private LoggerInterface $logger,
private IJobList $jobList,
) {
}
public function getProviders(): array {
$context = $this->coordinator->getRegistrationContext();
if ($context === null) {
return [];
}
if ($this->providers !== null) {
return $this->providers;
}
$this->providers = [];
foreach ($context->getSpeechToTextProviders() as $providerRegistration) {
$class = $providerRegistration->getService();
try {
$this->providers[$class] = $this->serverContainer->get($class);
} catch (NotFoundExceptionInterface|ContainerExceptionInterface|Throwable $e) {
$this->logger->error('Failed to load SpeechToText provider ' . $class, [
'exception' => $e,
]);
}
}
return $this->providers;
}
public function hasProviders(): bool {
$context = $this->coordinator->getRegistrationContext();
if ($context === null) {
return false;
}
return !empty($context->getSpeechToTextProviders());
}
public function scheduleFileTranscription(File $file): void {
if (!$this->hasProviders()) {
throw new PreConditionNotMetException('No SpeechToText providers have been registered');
}
try {
$this->jobList->add(TranscriptionJob::class, ['fileId' => $file->getId()]);
} catch (NotFoundException|InvalidPathException $e) {
throw new InvalidArgumentException('Invalid file provided for file transcription: ' . $e->getMessage());
}
}
public function transcribeFile(File $file): string {
if (!$this->hasProviders()) {
throw new PreConditionNotMetException('No SpeechToText providers have been registered');
}
foreach ($this->getProviders() as $provider) {
try {
return $provider->transcribeFile($file);
} catch (\Throwable $e) {
$this->logger->info('SpeechToText transcription using provider ' . $provider->getName() . ' failed', ['exception' => $e]);
}
}
throw new RuntimeException('Could not transcribe file');
}
}
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