1 files changed, 47 insertions, 1 deletions
diff --git a/lib/public/comments/icommentsmanager.php b/lib/public/comments/icommentsmanager.php
index b8fb3ca7f5d..f5b290bf8b2 100644
--- a/lib/public/comments/icommentsmanager.php
+++ b/lib/public/comments/icommentsmanager.php
@@ -115,10 +115,12 @@ interface ICommentsManager {
 	/**
 	 * @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, $objectId);
+	public function getNumberOfCommentsForObject($objectType, $objectId, \DateTime $notOlderThan = null);
 
 	/**
 	 * creates a new comment and returns it. At this point of time, it is not
@@ -188,4 +190,48 @@ interface ICommentsManager {
 	 */
 	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);
+
 }