lib/public/Comments/ICommentsManager.php
<?php
/**
* @author Arthur Schiwon <blizzz@arthur-schiwon.de>
* @author Joas Schilling <coding@schilljs.com>
* @author Thomas Müller <thomas.mueller@tmit.eu>
*
* @copyright Copyright (c) 2018, ownCloud GmbH
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OCP\Comments;
use \OCP\IUser;
/**
* Interface ICommentsManager
*
* This class manages the access to comments
*
* @package OCP\Comments
* @since 9.0.0
*/
interface ICommentsManager {
/**
* @const DELETED_USER type and id for a user that has been deleted
* @see deleteReferencesOfActor
* @since 9.0.0
*
* To be used as replacement for user type actors in deleteReferencesOfActor().
*
* User interfaces shall show "Deleted user" as display name, if needed.
*/
public const DELETED_USER = 'deleted_users';
/**
* returns a comment instance
*
* @param string $id the ID of the comment
* @return IComment
* @throws NotFoundException
* @since 9.0.0
*/
public function get($id);
/**
* returns the comment specified by the id and all it's child comments
*
* @param string $id
* @param int $limit max number of entries to return, 0 returns all
* @param int $offset the start entry
* @return array
* @since 9.0.0
*
* The return array looks like this
* [
* 'comment' => IComment, // root comment
* 'replies' =>
* [
* 0 =>
* [
* 'comment' => IComment,
* 'replies' =>
* [
* 0 =>
* [
* 'comment' => IComment,
* 'replies' => [ … ]
* ],
* …
* ]
* ]
* 1 =>
* [
* 'comment' => IComment,
* 'replies'=> [ … ]
* ],
* …
* ]
* ]
*/
public function getTree($id, $limit = 0, $offset = 0);
/**
* returns comments for a specific object (e.g. a file).
*
* The sort order is always newest to oldest.
*
* @param string $objectType the object type, e.g. 'files'
* @param string $objectId the id of the object
* @param int $limit optional, number of maximum comments to be returned. if
* not specified, all comments are returned.
* @param int $offset optional, starting point
* @param \DateTime $notOlderThan optional, timestamp of the oldest comments
* that may be returned
* @return IComment[]
* @since 9.0.0
*/
public function getForObject(
$objectType,
$objectId,
$limit = 0,
$offset = 0,
\DateTime $notOlderThan = null
);
/**
* Returns number of unread messages for specified nodeIDs, if there are any unread comments
*
* Example query:
* SELECT object_id, COUNT(object_id) FROM oc_comments C
* WHERE object_id IN('79', '80', '34', '36', '38', '33')
* AND object_id NOT IN(
* SELECT object_id FROM oc_comments_read_markers CRM
* WHERE C.object_id = CRM.object_id
* AND user_id = 'receiver2'
* AND marker_datetime > C.creation_timestamp)
* GROUP BY object_id;
*
* @param string $objectType string the object type: Example 'files'
* @param int[] $objectIds NodeIDs that may be returned: Example { 44, 36, 50, 60 }[4]
* @param IUser $user
* @return int[] $unreadCountsForNodes hash table: Example { 44 => 2, 36 => 1 }[2]
* @since 10.0.0
*/
public function getNumberOfUnreadCommentsForNodes($objectType, $objectIds, IUser $user);
/**
* @param $objectType string the object type, e.g. 'files'
* @param $objectId string the id of the object
* @param \DateTime $notOlderThan optional, timestamp of the oldest comments
* that may be returned
* @return Int
* @since 9.0.0
*/
public function getNumberOfCommentsForObject($objectType, $objectId, \DateTime $notOlderThan = null);
/**
* creates a new comment and returns it. At this point of time, it is not
* saved in the used data storage. Use save() after setting other fields
* of the comment (e.g. message or verb).
*
* @param string $actorType the actor type (e.g. 'users')
* @param string $actorId a user id
* @param string $objectType the object type the comment is attached to
* @param string $objectId the object id the comment is attached to
* @return IComment
* @since 9.0.0
*/
public function create($actorType, $actorId, $objectType, $objectId);
/**
* permanently deletes the comment specified by the ID
*
* When the comment has child comments, their parent ID will be changed to
* the parent ID of the item that is to be deleted.
*
* @param string $id
* @return bool
* @since 9.0.0
*/
public function delete($id);
/**
* saves the comment permanently
*
* if the supplied comment has an empty ID, a new entry comment will be
* saved and the instance updated with the new ID.
*
* Otherwise, an existing comment will be updated.
*
* Throws NotFoundException when a comment that is to be updated does not
* exist anymore at this point of time.
*
* @param IComment $comment
* @return bool
* @throws NotFoundException
* @since 9.0.0
*/
public function save(IComment $comment);
/**
* removes references to specific actor (e.g. on user delete) of a comment.
* The comment itself must not get lost/deleted.
*
* A 'users' type actor (type and id) should get replaced by the
* value of the DELETED_USER constant of this interface.
*
* @param string $actorType the actor type (e.g. 'users')
* @param string $actorId a user id
* @return boolean
* @since 9.0.0
*/
public function deleteReferencesOfActor($actorType, $actorId);
/**
* deletes all comments made of a specific object (e.g. on file delete)
*
* @param string $objectType the object type (e.g. 'files')
* @param string $objectId e.g. the file id
* @return boolean
* @since 9.0.0
*/
public function deleteCommentsAtObject($objectType, $objectId);
/**
* sets the read marker for a given file to the specified date for the
* provided user
*
* @param string $objectType
* @param string $objectId
* @param \DateTime $dateTime
* @param \OCP\IUser $user
* @since 9.0.0
*/
public function setReadMark($objectType, $objectId, \DateTime $dateTime, \OCP\IUser $user);
/**
* returns the read marker for a given file to the specified date for the
* provided user. It returns null, when the marker is not present, i.e.
* no comments were marked as read.
*
* @param string $objectType
* @param string $objectId
* @param \OCP\IUser $user
* @return \DateTime|null
* @since 9.0.0
*/
public function getReadMark($objectType, $objectId, \OCP\IUser $user);
/**
* deletes the read markers for the specified user
*
* @param \OCP\IUser $user
* @return bool
* @since 9.0.0
*/
public function deleteReadMarksFromUser(\OCP\IUser $user);
/**
* deletes the read markers on the specified object
*
* @param string $objectType
* @param string $objectId
* @return bool
* @since 9.0.0
*/
public function deleteReadMarksOnObject($objectType, $objectId);
}