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epubreader/lib/Hooks.php

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<?php
/**
* @author Frank de Lange
* @copyright 2017 Frank de Lange
*
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
namespace OCA\Epubreader;
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use OCP\IDBConnection;
use OCP\Files\Node;
use OCP\IUser;
use OCP\Util;
use \OC\User\User as User;
class Hooks {
public static function register() {
Util::connectHook('\OCP\Config', 'js', 'OCA\Epubreader\Hooks', 'announce_settings');
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\OC::$server->getRootFolder()->listen('\OC\Files', 'preDelete', function (Node $node) {
$fileId = $node->getId();
$connection = \OC::$server->getDatabaseConnection();
self::deleteFile($connection, $fileId);
});
\OC::$server->getUserManager()->listen('\OC\User', 'preDelete', function (User $user) {
$userId = $user->getUID();
$connection = \OC::$server->getDatabaseConnection();
self::deleteUser($connection, $userId);
});
}
public static function announce_settings(array $settings) {
// Nextcloud encodes this as JSON, Owncloud does not (yet) (#75)
// TODO: rmeove this when Owncloud starts encoding oc_appconfig as JSON just like it already encodes most other properties
$isJson = self::isJson($settings['array']['oc_appconfig']);
$array = ($isJson) ? json_decode($settings['array']['oc_appconfig'], true) : $settings['array']['oc_appconfig'];
$array['filesReader']['enableEpub'] = Config::get('epub_enable', 'true');
$array['filesReader']['enablePdf'] = Config::get('pdf_enable', 'true');
$array['filesReader']['enableCbx'] = Config::get('cbx_enable', 'true');
$settings['array']['oc_appconfig'] = ($isJson) ? json_encode($array) : $array;
}
protected static function deleteFile(IDBConnection $connection, $fileId) {
$queryBuilder = $connection->getQueryBuilder();
$queryBuilder->delete('reader_bookmarks')->where('file_id = :file_id')->setParameter('file_id', $fileId);
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$queryBuilder->execute();
$queryBuilder = $connection->getQueryBuilder();
$queryBuilder->delete('reader_prefs')->where('file_id = :file_id')->setParameter('file_id', $fileId);
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$queryBuilder->execute();
}
protected static function deleteUser(IDBConnection $connection, $userId) {
$queryBuilder = $connection->getQueryBuilder();
$queryBuilder->delete('reader_bookmarks')->where('user_id = :user_id')->setParameter('user_id', $userId);
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$queryBuilder->execute();
$queryBuilder = $connection->getQueryBuilder();
$queryBuilder->delete('reader_prefs')->where('user_id = :user_id')->setParameter('user_id', $userId);
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$queryBuilder->execute();
}
private static function isJson($string) {
return is_string($string) && is_array(json_decode($string, true)) && (json_last_error() == JSON_ERROR_NONE) ? true : false;
}
}