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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\IConfig;
use OCP\IServerContainer;
use OCP\IUserSession;
use OCP\PreConditionNotMetException;
use OCP\SpeechToText\ISpeechToTextManager;
use OCP\SpeechToText\ISpeechToTextProvider;
use OCP\SpeechToText\ISpeechToTextProviderWithId;
use OCP\SpeechToText\ISpeechToTextProviderWithUserId;
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,
private IConfig $config,
private IUserSession $userSession,
) {
}
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 $providerServiceRegistration) {
$class = $providerServiceRegistration->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, ?string $userId, string $appId): void {
if (!$this->hasProviders()) {
throw new PreConditionNotMetException('No SpeechToText providers have been registered');
}
try {
$this->jobList->add(TranscriptionJob::class, [
'fileId' => $file->getId(),
'owner' => $file->getOwner()->getUID(),
'userId' => $userId,
'appId' => $appId,
]);
} catch (NotFoundException|InvalidPathException $e) {
throw new InvalidArgumentException('Invalid file provided for file transcription: ' . $e->getMessage());
}
}
public function cancelScheduledFileTranscription(File $file, ?string $userId, string $appId): void {
try {
$jobArguments = [
'fileId' => $file->getId(),
'owner' => $file->getOwner()->getUID(),
'userId' => $userId,
'appId' => $appId,
];
if (!$this->jobList->has(TranscriptionJob::class, $jobArguments)) {
$this->logger->debug('Failed to cancel a Speech-to-text job for file ' . $file->getId() . '. No related job was found.');
return;
}
$this->jobList->remove(TranscriptionJob::class, $jobArguments);
} catch (NotFoundException|InvalidPathException $e) {
throw new InvalidArgumentException('Invalid file provided to cancel file transcription: ' . $e->getMessage());
}
}
public function transcribeFile(File $file): string {
if (!$this->hasProviders()) {
throw new PreConditionNotMetException('No SpeechToText providers have been registered');
}
$providers = $this->getProviders();
$json = $this->config->getAppValue('core', 'ai.stt_provider', '');
if ($json !== '') {
$classNameOrId = json_decode($json, true);
$provider = current(array_filter($providers, function ($provider) use ($classNameOrId) {
if ($provider instanceof ISpeechToTextProviderWithId) {
return $provider->getId() === $classNameOrId;
}
return $provider::class === $classNameOrId;
}));
if ($provider !== false) {
$providers = [$provider];
}
}
foreach ($providers as $provider) {
try {
if ($provider instanceof ISpeechToTextProviderWithUserId) {
$provider->setUserId($this->userSession->getUser()?->getUID());
}
return $provider->transcribeFile($file);
} catch (\Throwable $e) {
$this->logger->info('SpeechToText transcription using provider ' . $provider->getName() . ' failed', ['exception' => $e]);
throw new RuntimeException('SpeechToText transcription using provider "' . $provider->getName() . '" failed: ' . $e->getMessage());
}
}
throw new RuntimeException('Could not transcribe file');
}
}
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