4 files changed, 14 insertions, 0 deletions
diff --git a/src/Erebos/Chatroom.hs b/src/Erebos/Chatroom.hs
index aa5e3ee..fce8b1d 100644
--- a/src/Erebos/Chatroom.hs
+++ b/src/Erebos/Chatroom.hs
@@ -72,6 +72,8 @@ instance ConversationType ChatroomState ChatMessage where
     convMessageListSince mbSince cstate = ( 0, ) $
         map (, False) $ threadToListSince (maybe [] roomStateMessageData mbSince) (roomStateMessageData cstate)
 
+    convMarkAllSeen _ = return ()
+
 
 data ChatroomData = ChatroomData
     { rdPrev :: [Stored (Signed ChatroomData)]
diff --git a/src/Erebos/Conversation.hs b/src/Erebos/Conversation.hs
index 1d72f41..472195c 100644
--- a/src/Erebos/Conversation.hs
+++ b/src/Erebos/Conversation.hs
@@ -26,6 +26,7 @@ module Erebos.Conversation (
 
     sendMessage,
     deleteConversation,
+    markAllSeen,
 ) where
 
 import Control.Monad.Except
@@ -141,3 +142,6 @@ sendMessage (ChatroomConversation rstate) text = sendChatroomMessage rstate text
 deleteConversation :: (MonadHead LocalState m, MonadError e m, FromErebosError e) => Conversation -> m ()
 deleteConversation (DirectMessageConversation _) = throwOtherError "deleting direct message conversation is not supported"
 deleteConversation (ChatroomConversation rstate) = deleteChatroomByStateData (head $ roomStateData rstate)
+
+markAllSeen :: (MonadHead LocalState m, MonadError e m, FromErebosError e) => Conversation -> m ()
+markAllSeen = withConversation convMarkAllSeen
diff --git a/src/Erebos/Conversation/Class.hs b/src/Erebos/Conversation/Class.hs
index 96a0e6a..d7bac5d 100644
--- a/src/Erebos/Conversation/Class.hs
+++ b/src/Erebos/Conversation/Class.hs
@@ -3,12 +3,16 @@ module Erebos.Conversation.Class (
     RefDigest,
 ) where
 
+import Control.Monad.Except
+
 import Data.Text (Text)
 import Data.Time.LocalTime
 import Data.Typeable
 
+import Erebos.Error
 import Erebos.Identity
 import Erebos.Object
+import Erebos.State
 
 
 class (Typeable conv, Typeable msg) => ConversationType conv msg | conv -> msg, msg -> conv where
@@ -21,3 +25,5 @@ class (Typeable conv, Typeable msg) => ConversationType conv msg | conv -> msg,
         :: Maybe conv -- ^ Original state to diff from
         -> conv       -- ^ Current state
         -> ( Int, [ ( msg, Bool ) ] ) -- ^ Number of removed, list of added messages
+
+    convMarkAllSeen :: (MonadHead LocalState m, MonadError e m, FromErebosError e) => conv -> m ()
diff --git a/src/Erebos/DirectMessage.hs b/src/Erebos/DirectMessage.hs
index 62a25a2..2108587 100644
--- a/src/Erebos/DirectMessage.hs
+++ b/src/Erebos/DirectMessage.hs
@@ -58,6 +58,8 @@ instance ConversationType DirectMessageThread DirectMessage where
     convMessageListSince Nothing      thread = ( 0, ) $ dmThreadToListUnread thread
     convMessageListSince (Just since) thread = dmThreadToListChange since thread
 
+    convMarkAllSeen DirectMessageThread {..} = dmMarkAsSeen msgPeer
+
 
 data DirectMessage = DirectMessage
     { msgFrom :: ComposedIdentity