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407 lines
10 KiB
PHP
407 lines
10 KiB
PHP
<?php
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declare(strict_types=1);
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/**
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* SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
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* SPDX-FileCopyrightText: 2016 ownCloud, Inc.
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* SPDX-License-Identifier: AGPL-3.0-only
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*/
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namespace OC\SystemTag;
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use Doctrine\DBAL\Exception\UniqueConstraintViolationException;
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use OCP\DB\QueryBuilder\IQueryBuilder;
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use OCP\EventDispatcher\IEventDispatcher;
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use OCP\IDBConnection;
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use OCP\IGroupManager;
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use OCP\IUser;
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use OCP\SystemTag\ISystemTag;
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use OCP\SystemTag\ISystemTagManager;
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use OCP\SystemTag\ManagerEvent;
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use OCP\SystemTag\TagAlreadyExistsException;
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use OCP\SystemTag\TagNotFoundException;
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/**
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* Manager class for system tags
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*/
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class SystemTagManager implements ISystemTagManager {
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public const TAG_TABLE = 'systemtag';
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public const TAG_GROUP_TABLE = 'systemtag_group';
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/**
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* Prepared query for selecting tags directly
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*/
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private IQueryBuilder $selectTagQuery;
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public function __construct(
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protected IDBConnection $connection,
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protected IGroupManager $groupManager,
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protected IEventDispatcher $dispatcher,
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) {
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$query = $this->connection->getQueryBuilder();
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$this->selectTagQuery = $query->select('*')
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->from(self::TAG_TABLE)
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->where($query->expr()->eq('name', $query->createParameter('name')))
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->andWhere($query->expr()->eq('visibility', $query->createParameter('visibility')))
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->andWhere($query->expr()->eq('editable', $query->createParameter('editable')));
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}
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/**
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* {@inheritdoc}
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*/
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public function getTagsByIds($tagIds, ?IUser $user = null): array {
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if (!\is_array($tagIds)) {
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$tagIds = [$tagIds];
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}
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$tags = [];
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// note: not all databases will fail if it's a string or starts with a number
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foreach ($tagIds as $tagId) {
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if (!is_numeric($tagId)) {
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throw new \InvalidArgumentException('Tag id must be integer');
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}
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}
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$query = $this->connection->getQueryBuilder();
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$query->select('*')
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->from(self::TAG_TABLE)
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->where($query->expr()->in('id', $query->createParameter('tagids')))
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->addOrderBy('name', 'ASC')
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->addOrderBy('visibility', 'ASC')
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->addOrderBy('editable', 'ASC')
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->setParameter('tagids', $tagIds, IQueryBuilder::PARAM_INT_ARRAY);
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$result = $query->execute();
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while ($row = $result->fetch()) {
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$tag = $this->createSystemTagFromRow($row);
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if ($user && !$this->canUserSeeTag($tag, $user)) {
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// if a user is given, hide invisible tags
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continue;
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}
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$tags[$row['id']] = $tag;
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}
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$result->closeCursor();
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if (\count($tags) !== \count($tagIds)) {
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throw new TagNotFoundException(
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'Tag id(s) not found', 0, null, array_diff($tagIds, array_keys($tags))
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);
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}
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return $tags;
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}
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/**
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* {@inheritdoc}
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*/
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public function getAllTags($visibilityFilter = null, $nameSearchPattern = null): array {
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$tags = [];
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$query = $this->connection->getQueryBuilder();
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$query->select('*')
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->from(self::TAG_TABLE);
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if (!\is_null($visibilityFilter)) {
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$query->andWhere($query->expr()->eq('visibility', $query->createNamedParameter((int)$visibilityFilter)));
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}
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if (!empty($nameSearchPattern)) {
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$query->andWhere(
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$query->expr()->like(
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'name',
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$query->createNamedParameter('%' . $this->connection->escapeLikeParameter($nameSearchPattern). '%')
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)
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);
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}
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$query
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->addOrderBy('name', 'ASC')
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->addOrderBy('visibility', 'ASC')
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->addOrderBy('editable', 'ASC');
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$result = $query->execute();
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while ($row = $result->fetch()) {
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$tags[$row['id']] = $this->createSystemTagFromRow($row);
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}
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$result->closeCursor();
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return $tags;
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}
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/**
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* {@inheritdoc}
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*/
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public function getTag(string $tagName, bool $userVisible, bool $userAssignable): ISystemTag {
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// Length of name column is 64
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$truncatedTagName = substr($tagName, 0, 64);
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$result = $this->selectTagQuery
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->setParameter('name', $truncatedTagName)
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->setParameter('visibility', $userVisible ? 1 : 0)
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->setParameter('editable', $userAssignable ? 1 : 0)
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->execute();
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$row = $result->fetch();
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$result->closeCursor();
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if (!$row) {
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throw new TagNotFoundException(
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'Tag ("' . $truncatedTagName . '", '. $userVisible . ', ' . $userAssignable . ') does not exist'
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);
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}
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return $this->createSystemTagFromRow($row);
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}
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/**
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* {@inheritdoc}
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*/
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public function createTag(string $tagName, bool $userVisible, bool $userAssignable): ISystemTag {
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// Length of name column is 64
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$truncatedTagName = substr($tagName, 0, 64);
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$query = $this->connection->getQueryBuilder();
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$query->insert(self::TAG_TABLE)
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->values([
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'name' => $query->createNamedParameter($truncatedTagName),
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'visibility' => $query->createNamedParameter($userVisible ? 1 : 0),
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'editable' => $query->createNamedParameter($userAssignable ? 1 : 0),
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]);
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try {
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$query->execute();
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} catch (UniqueConstraintViolationException $e) {
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throw new TagAlreadyExistsException(
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'Tag ("' . $truncatedTagName . '", '. $userVisible . ', ' . $userAssignable . ') already exists',
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0,
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$e
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);
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}
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$tagId = $query->getLastInsertId();
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$tag = new SystemTag(
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(string)$tagId,
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$truncatedTagName,
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$userVisible,
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$userAssignable
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);
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$this->dispatcher->dispatch(ManagerEvent::EVENT_CREATE, new ManagerEvent(
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ManagerEvent::EVENT_CREATE, $tag
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));
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return $tag;
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}
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/**
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* {@inheritdoc}
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*/
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public function updateTag(
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string $tagId,
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string $newName,
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bool $userVisible,
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bool $userAssignable,
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): void {
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try {
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$tags = $this->getTagsByIds($tagId);
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} catch (TagNotFoundException $e) {
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throw new TagNotFoundException(
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'Tag does not exist', 0, null, [$tagId]
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);
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}
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$beforeUpdate = array_shift($tags);
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// Length of name column is 64
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$truncatedNewName = substr($newName, 0, 64);
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$afterUpdate = new SystemTag(
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$tagId,
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$truncatedNewName,
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$userVisible,
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$userAssignable
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);
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$query = $this->connection->getQueryBuilder();
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$query->update(self::TAG_TABLE)
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->set('name', $query->createParameter('name'))
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->set('visibility', $query->createParameter('visibility'))
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->set('editable', $query->createParameter('editable'))
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->where($query->expr()->eq('id', $query->createParameter('tagid')))
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->setParameter('name', $truncatedNewName)
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->setParameter('visibility', $userVisible ? 1 : 0)
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->setParameter('editable', $userAssignable ? 1 : 0)
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->setParameter('tagid', $tagId);
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try {
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if ($query->execute() === 0) {
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throw new TagNotFoundException(
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'Tag does not exist', 0, null, [$tagId]
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);
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}
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} catch (UniqueConstraintViolationException $e) {
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throw new TagAlreadyExistsException(
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'Tag ("' . $newName . '", '. $userVisible . ', ' . $userAssignable . ') already exists',
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0,
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$e
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);
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}
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$this->dispatcher->dispatch(ManagerEvent::EVENT_UPDATE, new ManagerEvent(
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ManagerEvent::EVENT_UPDATE, $afterUpdate, $beforeUpdate
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));
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}
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/**
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* {@inheritdoc}
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*/
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public function deleteTags($tagIds): void {
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if (!\is_array($tagIds)) {
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$tagIds = [$tagIds];
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}
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$tagNotFoundException = null;
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$tags = [];
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try {
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$tags = $this->getTagsByIds($tagIds);
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} catch (TagNotFoundException $e) {
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$tagNotFoundException = $e;
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// Get existing tag objects for the hooks later
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$existingTags = array_diff($tagIds, $tagNotFoundException->getMissingTags());
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if (!empty($existingTags)) {
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try {
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$tags = $this->getTagsByIds($existingTags);
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} catch (TagNotFoundException $e) {
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// Ignore further errors...
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}
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}
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}
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// delete relationships first
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$query = $this->connection->getQueryBuilder();
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$query->delete(SystemTagObjectMapper::RELATION_TABLE)
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->where($query->expr()->in('systemtagid', $query->createParameter('tagids')))
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->setParameter('tagids', $tagIds, IQueryBuilder::PARAM_INT_ARRAY)
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->execute();
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$query = $this->connection->getQueryBuilder();
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$query->delete(self::TAG_TABLE)
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->where($query->expr()->in('id', $query->createParameter('tagids')))
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->setParameter('tagids', $tagIds, IQueryBuilder::PARAM_INT_ARRAY)
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->execute();
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foreach ($tags as $tag) {
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$this->dispatcher->dispatch(ManagerEvent::EVENT_DELETE, new ManagerEvent(
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ManagerEvent::EVENT_DELETE, $tag
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));
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}
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if ($tagNotFoundException !== null) {
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throw new TagNotFoundException(
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'Tag id(s) not found', 0, $tagNotFoundException, $tagNotFoundException->getMissingTags()
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);
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function canUserAssignTag(ISystemTag $tag, IUser $user): bool {
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// early check to avoid unneeded group lookups
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if ($tag->isUserAssignable() && $tag->isUserVisible()) {
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return true;
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}
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if ($this->groupManager->isAdmin($user->getUID())) {
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return true;
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}
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if (!$tag->isUserVisible()) {
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return false;
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}
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$groupIds = $this->groupManager->getUserGroupIds($user);
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if (!empty($groupIds)) {
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$matchingGroups = array_intersect($groupIds, $this->getTagGroups($tag));
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if (!empty($matchingGroups)) {
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return true;
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}
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}
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return false;
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}
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/**
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* {@inheritdoc}
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*/
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public function canUserSeeTag(ISystemTag $tag, IUser $user): bool {
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if ($tag->isUserVisible()) {
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return true;
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}
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if ($this->groupManager->isAdmin($user->getUID())) {
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return true;
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}
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return false;
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}
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private function createSystemTagFromRow($row): SystemTag {
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return new SystemTag((string)$row['id'], $row['name'], (bool)$row['visibility'], (bool)$row['editable']);
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}
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/**
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* {@inheritdoc}
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*/
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public function setTagGroups(ISystemTag $tag, array $groupIds): void {
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// delete relationships first
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$this->connection->beginTransaction();
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try {
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$query = $this->connection->getQueryBuilder();
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$query->delete(self::TAG_GROUP_TABLE)
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->where($query->expr()->eq('systemtagid', $query->createNamedParameter($tag->getId())))
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->execute();
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// add each group id
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$query = $this->connection->getQueryBuilder();
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$query->insert(self::TAG_GROUP_TABLE)
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->values([
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'systemtagid' => $query->createNamedParameter($tag->getId()),
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'gid' => $query->createParameter('gid'),
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]);
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foreach ($groupIds as $groupId) {
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if ($groupId === '') {
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continue;
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}
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$query->setParameter('gid', $groupId);
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$query->execute();
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}
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$this->connection->commit();
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} catch (\Exception $e) {
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$this->connection->rollBack();
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throw $e;
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function getTagGroups(ISystemTag $tag): array {
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$groupIds = [];
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$query = $this->connection->getQueryBuilder();
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$query->select('gid')
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->from(self::TAG_GROUP_TABLE)
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->where($query->expr()->eq('systemtagid', $query->createNamedParameter($tag->getId())))
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->orderBy('gid');
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$result = $query->execute();
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while ($row = $result->fetch()) {
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$groupIds[] = $row['gid'];
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}
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$result->closeCursor();
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return $groupIds;
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}
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}
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