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<?php
/**
* FullNextSearch - Full Text Search your Nextcloud.
*
* This file is licensed under the Affero General Public License version 3 or
* later. See the COPYING file.
*
* @author Maxence Lange <maxence@artificial-owl.com>
* @copyright 2017
* @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\FullNextSearch\Service;
use Exception;
use OC\App\AppManager;
use OC_App;
use OCA\FullNextSearch\Exceptions\PlatformDoesNotExistException;
use OCA\FullNextSearch\Exceptions\PlatformIsNotCompatibleException;
use OCA\FullNextSearch\Exceptions\PlatformNotSelectedException;
use OCA\FullNextSearch\INextSearchPlatform;
use OCP\AppFramework\QueryException;
class PlatformService {
/** @var AppManager */
private $appManager;
/** @var ConfigService */
private $configService;
/** @var MiscService */
private $miscService;
/** @var array */
private $platforms = [];
/** @var INextSearchPlatform */
private $platform;
/** @var bool */
private $platformsLoaded = false;
/**
* ProviderService constructor.
*
* @param AppManager $appManager
* @param ConfigService $configService
* @param MiscService $miscService
*
*/
public function __construct(
AppManager $appManager, ConfigService $configService, MiscService $miscService
) {
$this->appManager = $appManager;
$this->configService = $configService;
$this->miscService = $miscService;
}
/**
* @param bool $silent
*
* @return INextSearchPlatform
* @throws Exception
*/
public function getPlatform($silent = false) {
try {
$this->loadPlatform();
} catch (Exception $e) {
if (!$silent) {
$this->miscService->log($e->getMessage());
}
throw $e;
}
return $this->platform;
}
/**
* @return INextSearchPlatform[]
* @throws Exception
*/
public function getPlatforms() {
$this->loadPlatforms();
$platforms = [];
foreach ($this->platforms as $class) {
try {
$platform = \OC::$server->query((string)$class);
if ($platform instanceof INextSearchPlatform) {
$platforms[$class] = $platform;
}
} catch (QueryException $e) {
/** we cycle */
}
}
return $platforms;
}
/**
* @throws Exception
*/
private function loadPlatforms() {
if ($this->platformsLoaded) {
return;
}
try {
$apps = $this->appManager->getInstalledApps();
foreach ($apps as $appId) {
$this->loadPlatformsFromApp($appId);
}
$this->platformsLoaded = true;
} catch (Exception $e) {
$this->miscService->log($e->getMessage());
throw $e;
}
}
/**
* @throws Exception
* @throws PlatformDoesNotExistException
* @throws PlatformIsNotCompatibleException
* @throws PlatformNotSelectedException
* @throws QueryException
*/
private function loadPlatform() {
if ($this->platform !== null) {
return;
}
$this->loadPlatforms();
$selected = $this->getSelectedPlatform();
$platform = \OC::$server->query((string)$selected);
if (!($platform instanceof INextSearchPlatform)) {
throw new PlatformIsNotCompatibleException(
$selected . ' is not a compatible NextSearchPlatform'
);
}
$platform->loadPlatform();
$this->platform = $platform;
}
/**
* @return string
* @throws PlatformDoesNotExistException
* @throws PlatformNotSelectedException
*/
private function getSelectedPlatform() {
$selected = $this->configService->getAppValue(ConfigService::SEARCH_PLATFORM);
if ($selected === '') {
throw new PlatformNotSelectedException('Admin have not selected any NextSearchPlatform');
}
if (!in_array($selected, $this->platforms)) {
throw new PlatformDoesNotExistException(
'NextSearchPlatform ' . $selected . ' is not available'
);
}
return $selected;
}
/**
* @param string $appId
*/
private function loadPlatformsFromApp($appId) {
$appInfo = OC_App::getAppInfo($appId);
if (!is_array($appInfo) || !key_exists('fullnextsearch', $appInfo)
|| !key_exists('platform', $appInfo['fullnextsearch'])) {
return;
}
$platforms = $appInfo['fullnextsearch']['platform'];
if (!is_array($platforms)) {
$platforms = [$platforms];
}
$this->platforms = array_merge($this->platforms, $platforms);
}
}
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