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<?php
declare(strict_types=1);
/**
* @copyright 2019 Christoph Wurst <christoph@winzerhof-wurst.at>
*
* @author 2019 Christoph Wurst <christoph@winzerhof-wurst.at>
* @author 2021 Richard Steinmetz <richard@steinmetz.cloud>
*
* @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 OCA\Mail\Service;
use ChristophWurst\KItinerary\Itinerary;
use OCA\Mail\Account;
use OCA\Mail\Db\Mailbox;
use OCA\Mail\IMAP\IMAPClientFactory;
use OCA\Mail\IMAP\MessageMapper;
use OCA\Mail\Integration\KItinerary\ItineraryExtractor;
use OCP\ICache;
use OCP\ICacheFactory;
use Psr\Log\LoggerInterface;
use function array_reduce;
use function count;
use function json_encode;
class ItineraryService {
/** @var IMAPClientFactory */
private $clientFactory;
/** @var MessageMapper */
private $messageMapper;
/** @var ItineraryExtractor */
private $extractor;
/** @var ICache */
private $cache;
/** @var LoggerInterface */
private $logger;
public function __construct(IMAPClientFactory $clientFactory,
MessageMapper $messageMapper,
ItineraryExtractor $extractor,
ICacheFactory $cacheFactory,
LoggerInterface $logger) {
$this->clientFactory = $clientFactory;
$this->messageMapper = $messageMapper;
$this->extractor = $extractor;
$this->cache = $cacheFactory->createLocal();
$this->logger = $logger;
}
private function buildCacheKey(Account $account, Mailbox $mailbox, int $id): string {
return 'mail_itinerary_' . $account->getId() . '_' . $mailbox->getName() . '_' . $id;
}
public function getCached(Account $account, Mailbox $mailbox, int $id): ?Itinerary {
if ($cached = ($this->cache->get($this->buildCacheKey($account, $mailbox, $id)))) {
return Itinerary::fromJson($cached);
}
return null;
}
public function extract(Account $account, Mailbox $mailbox, int $id): Itinerary {
if ($cached = ($this->getCached($account, $mailbox, $id))) {
return $cached;
}
$client = $this->clientFactory->getClient($account);
try {
$itinerary = new Itinerary();
$htmlBody = $this->messageMapper->getHtmlBody($client, $mailbox->getName(), $id);
if ($htmlBody !== null) {
$itinerary = $itinerary->merge(
$this->extractor->extract($htmlBody)
);
$this->logger->debug('Extracted ' . count($itinerary) . ' itinerary entries from the message HTML body');
} else {
$this->logger->debug('Message does not have an HTML body, can\'t extract itinerary info');
}
$attachments = $this->messageMapper->getRawAttachments($client, $mailbox->getName(), $id);
} finally {
$client->logout();
}
$itinerary = array_reduce($attachments, function (Itinerary $combined, string $attachment) {
$extracted = $this->extractor->extract($attachment);
$this->logger->debug('Extracted ' . count($extracted) . ' itinerary entries from an attachment');
return $combined->merge($extracted);
}, $itinerary);
// Lastly, we put the extracted data through the tool again, so it can combine
// and pick the most relevant information
$final = $this->extractor->extract(json_encode($itinerary));
$this->logger->debug('Reduced ' . count($itinerary) . ' itinerary entries to ' . count($final) . ' entries');
$cache_key = $this->buildCacheKey($account, $mailbox, $id);
$this->cache->set($cache_key, json_encode($final));
return $final;
}
}
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