core: timed messages (#1561)

* docs: disappearing messages rfc

* change schema

* word

* wip

* wip

* todos

* todos

* remove cancel, refactor

* revert prefs

* CITimed

* schema

* time on send direct

* time on send group

* add ttl to msg container, refactor

* timed on receive

* time on read

* getTimedItems, fix tests

* mark read in terminal - view, input, output, fix tests

* refactor

* comment

* util

* insert atomically

* refactor

* use guards

* refactor startTimedItemThread

Co-authored-by: Evgeny Poberezkin <2769109+epoberezkin@users.noreply.github.com>

docs/rfcs/2022-12-12-disappearing-messages.md

@@ -0,0 +1,106 @@
+# Disappearing messages
+
+- ability to turn on/off disappearing messages feature per conversation, specify ttl
+
+- use preferences framework, preference affects local deletion of both sent and received messages
+
+- special chat item on change
+
+- in direct chat - chat item can be interacted with to agree or disagree with preference change, updates preference accordingly
+
+  - how does party that offered preference change learn about disagreement? (maybe just no preference update from contact is ok, since it's still not on if it's not mutual)
+
+  - how does it learn about disagreement on ttl? (it's on already - so it works for both but differently if there's no agreement)
+
+  - single updating chat item or per event? (probably per event is better since they can be spaced in time)
+
+- in group - set by owner
+
+- should it be allowed to be configured globally?
+
+- change of setting shouldn't prevent previous disappearing messages from being deleted
+
+## Design
+
+- add `delete_at` field to `chat_items` table, index `idx_chat_items_delete_at`
+
+- add `disappearingItems :: TMap ChatItemId (Async ())` to ChatController (use `Weak ThreadId`?)
+
+- new background process that periodically scans for disappearing messages bound to be deleted during next 30 minutes:
+
+  - add `cleanupManager :: TVar (Async ())` to ChatController
+
+  - periodically gets items to schedule for deletion based on delete_at field
+
+  - for items to be deleted in next 30 minutes - add thread to disappearingItems - thread delays until deleteAt date, then deletes and sends CRChatItemDeleted to view
+
+  - for items past current time - delete in bulk
+
+  - race condition between bulk deletion of expired items on start and opening a chat with them - they should be removed from chat view once deleted - don't optimize for bulk deletion and create threads? create multiple CRs after bulk deletion? create single chat response with all ids?
+
+- when chat item is deleted locally, either by user or via "delete for everyone" feature, kill thread and remove from map
+
+- when MsgContent chat item is sent or marked read, add thread to disappearingItems based on chat preference
+
+- UI shows timer based on chat item's createdAt date and deleteAt date
+
+\***
+
+Preference agreement:
+
+- new preference types?
+
+  ``` haskell
+  data DisappearingMessagesPreference = DisappearingMessagesPreference
+  {
+    allow :: FeatureAllowed,
+    ttl :: Int
+  }
+
+  data DisappearingMessagesGroupPreference = DisappearingMessagesGroupPreference
+  {
+    enable :: GroupFeatureEnabled,
+    ttl :: Int
+  }
+
+  -- requires changing functions and types using Preference and GroupPreference
+  ```
+- chat items to contain old and new preference value
+
+\***
+
+Maybe agreement shouldn't be via preferences framework, but ad-hoc? For example:
+
+- new protocol messages `XMsgTtlOffer ttl`, `XMsgTtlAgree ttl`, `XMsgTtlOff`
+
+- for direct chats on XMsgTtlOffer contact `disappearingMessages` fields is updated to 
+
+- for direct chats on XMsgTtlAgree check ttl equals offered, then turn on
+
+- for group chats only XMsgTtlAgree has to be sent, should only be accepted from owner
+
+- XMsgTtlOff turns off unconditionally, for group chats should only be accepted from owner
+
+- types:
+
+  ``` haskell
+  data DisappearingMessagesState
+    = DMSOff
+    | DMSOffered ttl
+    | DMSAgreed ttl
+
+  data Contact = Contact
+  { ...
+    disappearingMessagesState :: DisappearingMessagesState,
+    ...
+  }
+
+  data GroupInfo = GroupInfo
+  { ...
+    disappearingMessagesState :: DisappearingMessagesState,
+    ...
+  }
+
+  -- make part of ChatSettings?
+  ```
+

simplex-chat.cabal

@@ -68,6 +68,7 @@ library
       Simplex.Chat.Migrations.M20221209_verified_connection
       Simplex.Chat.Migrations.M20221210_idxs
       Simplex.Chat.Migrations.M20221211_group_description
+      Simplex.Chat.Migrations.M20221212_chat_items_timed
       Simplex.Chat.Mobile
       Simplex.Chat.Options
       Simplex.Chat.ProfileGenerator
@@ -79,6 +80,7 @@ library
       Simplex.Chat.Terminal.Notification
       Simplex.Chat.Terminal.Output
       Simplex.Chat.Types
+      Simplex.Chat.Util
       Simplex.Chat.View
   other-modules:
       Paths_simplex_chat

src/Simplex/Chat.hs

@@ -55,6 +55,7 @@ import Simplex.Chat.ProfileGenerator (generateRandomProfile)
 import Simplex.Chat.Protocol
 import Simplex.Chat.Store
 import Simplex.Chat.Types
+import Simplex.Chat.Util (diffInMicros)
 import Simplex.Messaging.Agent as Agent
 import Simplex.Messaging.Agent.Env.SQLite (AgentConfig (..), AgentDatabase (..), InitialAgentServers (..), createAgentStore, defaultAgentConfig)
 import Simplex.Messaging.Agent.Lock
@@ -75,7 +76,7 @@ import System.FilePath (combine, splitExtensions, takeFileName)
 import System.IO (Handle, IOMode (..), SeekMode (..), hFlush, openFile, stdout)
 import Text.Read (readMaybe)
 import UnliftIO.Async
-import UnliftIO.Concurrent (forkIO, threadDelay)
+import UnliftIO.Concurrent (forkFinally, forkIO, mkWeakThreadId, threadDelay)
 import UnliftIO.Directory
 import qualified UnliftIO.Exception as E
 import UnliftIO.IO (hClose, hSeek, hTell)
@@ -155,7 +156,9 @@ newChatController ChatDatabase {chatStore, agentStore} user cfg@ChatConfig {agen
   chatStoreChanged <- newTVarIO False
   expireCIsAsync <- newTVarIO Nothing
   expireCIs <- newTVarIO False
-  pure ChatController {activeTo, firstTime, currentUser, smpAgent, agentAsync, chatStore, chatStoreChanged, idsDrg, inputQ, outputQ, notifyQ, chatLock, sndFiles, rcvFiles, currentCalls, config, sendNotification, incognitoMode, filesFolder, expireCIsAsync, expireCIs}
+  cleanupManagerAsync <- newTVarIO Nothing
+  timedItemThreads <- atomically TM.empty
+  pure ChatController {activeTo, firstTime, currentUser, smpAgent, agentAsync, chatStore, chatStoreChanged, idsDrg, inputQ, outputQ, notifyQ, chatLock, sndFiles, rcvFiles, currentCalls, config, sendNotification, incognitoMode, filesFolder, expireCIsAsync, expireCIs, cleanupManagerAsync, timedItemThreads}
   where
     configServers :: InitialAgentServers
     configServers =
@@ -189,8 +192,16 @@ startChatController user subConns enableExpireCIs = do
           then Just <$> async (void . runExceptT $ subscribeUserConnections Agent.subscribeConnections user)
           else pure Nothing
       atomically . writeTVar s $ Just (a1, a2)
+      startCleanupManager
       when enableExpireCIs startExpireCIs
       pure a1
+    startCleanupManager = do
+      cleanupAsync <- asks cleanupManagerAsync
+      readTVarIO cleanupAsync >>= \case
+        Nothing -> do
+          a <- Just <$> async (void . runExceptT $ cleanupManager user)
+          atomically $ writeTVar cleanupAsync a
+        _ -> pure ()
     startExpireCIs = do
       expireAsync <- asks expireCIsAsync
       readTVarIO expireAsync >>= \case
@@ -288,20 +299,25 @@ processChatCommand = \case
   APIGetChatItems _pagination -> pure $ chatCmdError "not implemented"
   APISendMessage (ChatRef cType chatId) (ComposedMessage file_ quotedItemId_ mc) -> withUser $ \user@User {userId} -> withChatLock "sendMessage" $ case cType of
     CTDirect -> do
-      ct@Contact {localDisplayName = c, contactUsed} <- withStore $ \db -> getContact db user chatId
+      ct@Contact {contactId, localDisplayName = c, contactUsed} <- withStore $ \db -> getContact db user chatId
       assertDirectAllowed user MDSnd ct XMsgNew_
       unless contactUsed $ withStore' $ \db -> updateContactUsed db user ct
       if isVoice mc && not (featureAllowed SCFVoice forUser ct)
         then pure $ chatCmdError $ "feature not allowed " <> T.unpack (chatFeatureToText CFVoice)
         else do
           (fileInvitation_, ciFile_, ft_) <- unzipMaybe3 <$> setupSndFileTransfer ct
-          (msgContainer, quotedItem_) <- prepareMsg fileInvitation_
+          timed_ <- msgTimed ct
+          (msgContainer, quotedItem_) <- prepareMsg fileInvitation_ timed_
           (msg@SndMessage {sharedMsgId}, _) <- sendDirectContactMessage ct (XMsgNew msgContainer)
           case ft_ of
             Just ft@FileTransferMeta {fileInline = Just IFMSent} ->
               sendDirectFileInline ct ft sharedMsgId
             _ -> pure ()
-          ci <- saveSndChatItem user (CDDirectSnd ct) msg (CISndMsgContent mc) ciFile_ quotedItem_
+          ci <- saveSndChatItemTimed user (CDDirectSnd ct) msg (CISndMsgContent mc) ciFile_ quotedItem_ timed_
+          case timed_ of
+            Just CITimed {ttl, deleteAt = Just deleteAt} ->
+              when (ttl <= cleanupManagerInterval) $ startTimedItemThread user (ChatRef CTDirect contactId, chatItemId' ci) deleteAt
+            _ -> pure ()
           setActive $ ActiveC c
           pure . CRNewChatItem $ AChatItem SCTDirect SMDSnd (DirectChat ct) ci
       where
@@ -321,9 +337,16 @@ processChatCommand = \case
               _ -> pure CIFSSndStored
             let ciFile = CIFile {fileId, fileName, fileSize, filePath = Just file, fileStatus}
             pure (fileInvitation, ciFile, ft)
-        prepareMsg :: Maybe FileInvitation -> m (MsgContainer, Maybe (CIQuote 'CTDirect))
-        prepareMsg fileInvitation_ = case quotedItemId_ of
-          Nothing -> pure (MCSimple (extMsgContent mc fileInvitation_), Nothing)
+        msgTimed :: Contact -> m (Maybe CITimed)
+        msgTimed ct = case contactCITimedTTL ct of
+          Just ttl -> do
+            ts <- liftIO getCurrentTime
+            let deleteAt = addUTCTime (toEnum ttl) ts
+            pure . Just $ CITimed ttl (Just deleteAt)
+          Nothing -> pure Nothing
+        prepareMsg :: Maybe FileInvitation -> Maybe CITimed -> m (MsgContainer, Maybe (CIQuote 'CTDirect))
+        prepareMsg fileInvitation_ timed_ = case quotedItemId_ of
+          Nothing -> pure (MCSimple (extMsgContent mc fileInvitation_ $ ttl_ timed_), Nothing)
           Just quotedItemId -> do
             CChatItem _ qci@ChatItem {meta = CIMeta {itemTs, itemSharedMsgId}, formattedText, file} <-
               withStore $ \db -> getDirectChatItem db userId chatId quotedItemId
@@ -331,7 +354,7 @@ processChatCommand = \case
             let msgRef = MsgRef {msgId = itemSharedMsgId, sentAt = itemTs, sent, memberId = Nothing}
                 qmc = quoteContent origQmc file
                 quotedItem = CIQuote {chatDir = qd, itemId = Just quotedItemId, sharedMsgId = itemSharedMsgId, sentAt = itemTs, content = qmc, formattedText}
-            pure (MCQuote QuotedMsg {msgRef, content = qmc} (extMsgContent mc fileInvitation_), Just quotedItem)
+            pure (MCQuote QuotedMsg {msgRef, content = qmc} (extMsgContent mc fileInvitation_ $ ttl_ timed_), Just quotedItem)
           where
             quoteData :: ChatItem c d -> m (MsgContent, CIQDirection 'CTDirect, Bool)
             quoteData ChatItem {meta = CIMeta {itemDeleted = True}} = throwChatError CEInvalidQuote
@@ -339,16 +362,21 @@ processChatCommand = \case
             quoteData ChatItem {content = CIRcvMsgContent qmc} = pure (qmc, CIQDirectRcv, False)
             quoteData _ = throwChatError CEInvalidQuote
     CTGroup -> do
-      Group gInfo@GroupInfo {membership, localDisplayName = gName} ms <- withStore $ \db -> getGroup db user chatId
+      Group gInfo@GroupInfo {groupId, membership, localDisplayName = gName} ms <- withStore $ \db -> getGroup db user chatId
       unless (memberActive membership) $ throwChatError CEGroupMemberUserRemoved
       if isVoice mc && not (groupFeatureAllowed SGFVoice gInfo)
         then pure $ chatCmdError $ "feature not allowed " <> T.unpack (groupFeatureToText GFVoice)
         else do
           (fileInvitation_, ciFile_, ft_) <- unzipMaybe3 <$> setupSndFileTransfer gInfo (length $ filter memberCurrent ms)
-          (msgContainer, quotedItem_) <- prepareMsg fileInvitation_ membership
+          timed_ <- msgTimed gInfo
+          (msgContainer, quotedItem_) <- prepareMsg fileInvitation_ timed_ membership
           msg@SndMessage {sharedMsgId} <- sendGroupMessage gInfo ms (XMsgNew msgContainer)
           mapM_ (sendGroupFileInline ms sharedMsgId) ft_
-          ci <- saveSndChatItem user (CDGroupSnd gInfo) msg (CISndMsgContent mc) ciFile_ quotedItem_
+          ci <- saveSndChatItemTimed user (CDGroupSnd gInfo) msg (CISndMsgContent mc) ciFile_ quotedItem_ timed_
+          case timed_ of
+            Just CITimed {ttl, deleteAt = Just deleteAt} ->
+              when (ttl <= cleanupManagerInterval) $ startTimedItemThread user (ChatRef CTGroup groupId, chatItemId' ci) deleteAt
+            _ -> pure ()
           setActive $ ActiveG gName
           pure . CRNewChatItem $ AChatItem SCTGroup SMDSnd (GroupChat gInfo) ci
       where
@@ -362,6 +390,13 @@ processChatCommand = \case
             ft@FileTransferMeta {fileId} <- createSndGroupFileTransfer db userId gInfo file fileInvitation chSize
             let ciFile = CIFile {fileId, fileName, fileSize, filePath = Just file, fileStatus}
             pure (fileInvitation, ciFile, ft)
+        msgTimed :: GroupInfo -> m (Maybe CITimed)
+        msgTimed gInfo = case groupCITimedTTL gInfo of
+          Just ttl -> do
+            ts <- liftIO getCurrentTime
+            let deleteAt = addUTCTime (toEnum ttl) ts
+            pure . Just $ CITimed ttl (Just deleteAt)
+          Nothing -> pure Nothing
         sendGroupFileInline :: [GroupMember] -> SharedMsgId -> FileTransferMeta -> m ()
         sendGroupFileInline ms sharedMsgId ft@FileTransferMeta {fileInline} =
           when (fileInline == Just IFMSent) . forM_ ms $ \case
@@ -370,9 +405,9 @@ processChatCommand = \case
                 void . withStore' $ \db -> createSndGroupInlineFT db m conn ft
                 sendMemberFileInline m conn ft sharedMsgId
             _ -> pure ()
-        prepareMsg :: Maybe FileInvitation -> GroupMember -> m (MsgContainer, Maybe (CIQuote 'CTGroup))
-        prepareMsg fileInvitation_ membership = case quotedItemId_ of
-          Nothing -> pure (MCSimple (extMsgContent mc fileInvitation_), Nothing)
+        prepareMsg :: Maybe FileInvitation -> Maybe CITimed -> GroupMember -> m (MsgContainer, Maybe (CIQuote 'CTGroup))
+        prepareMsg fileInvitation_ timed_ membership = case quotedItemId_ of
+          Nothing -> pure (MCSimple (extMsgContent mc fileInvitation_ $ ttl_ timed_), Nothing)
           Just quotedItemId -> do
             CChatItem _ qci@ChatItem {meta = CIMeta {itemTs, itemSharedMsgId}, formattedText, file} <-
               withStore $ \db -> getGroupChatItem db user chatId quotedItemId
@@ -380,7 +415,7 @@ processChatCommand = \case
             let msgRef = MsgRef {msgId = itemSharedMsgId, sentAt = itemTs, sent, memberId = Just memberId}
                 qmc = quoteContent origQmc file
                 quotedItem = CIQuote {chatDir = qd, itemId = Just quotedItemId, sharedMsgId = itemSharedMsgId, sentAt = itemTs, content = qmc, formattedText}
-            pure (MCQuote QuotedMsg {msgRef, content = qmc} (extMsgContent mc fileInvitation_), Just quotedItem)
+            pure (MCQuote QuotedMsg {msgRef, content = qmc} (extMsgContent mc fileInvitation_ $ ttl_ timed_), Just quotedItem)
           where
             quoteData :: ChatItem c d -> GroupMember -> m (MsgContent, CIQDirection 'CTGroup, Bool, GroupMember)
             quoteData ChatItem {meta = CIMeta {itemDeleted = True}} _ = throwChatError CEInvalidQuote
@@ -390,6 +425,8 @@ processChatCommand = \case
     CTContactRequest -> pure $ chatCmdError "not supported"
     CTContactConnection -> pure $ chatCmdError "not supported"
     where
+      ttl_ :: Maybe CITimed -> Maybe Int
+      ttl_ timed_ = timed_ >>= \CITimed {ttl} -> Just ttl
       quoteContent :: forall d. MsgContent -> Maybe (CIFile d) -> MsgContent
       quoteContent qmc ciFile_
         | replaceContent = MCText qTextOrFile
@@ -448,14 +485,14 @@ processChatCommand = \case
   APIDeleteChatItem (ChatRef cType chatId) itemId mode -> withUser $ \user@User {userId} -> withChatLock "deleteChatItem" $ case cType of
     CTDirect -> do
       (ct@Contact {localDisplayName = c}, ci@(CChatItem msgDir ChatItem {meta = CIMeta {itemSharedMsgId}})) <- withStore $ \db -> (,) <$> getContact db user chatId <*> getDirectChatItem db userId chatId itemId
-      assertDirectAllowed user MDSnd ct XMsgDel_
       case (mode, msgDir, itemSharedMsgId) of
-        (CIDMInternal, _, _) -> deleteDirectCI user ct ci True
+        (CIDMInternal, _, _) -> deleteDirectCI user ct ci True False
         (CIDMBroadcast, SMDSnd, Just itemSharedMId) -> do
+          assertDirectAllowed user MDSnd ct XMsgDel_
           (SndMessage {msgId}, _) <- sendDirectContactMessage ct (XMsgDel itemSharedMId)
           setActive $ ActiveC c
           if featureAllowed SCFFullDelete forUser ct
-            then deleteDirectCI user ct ci True
+            then deleteDirectCI user ct ci True False
             else markDirectCIDeleted user ct ci msgId True
         (CIDMBroadcast, _, _) -> throwChatError CEInvalidChatItemDelete
     CTGroup -> do
@@ -463,19 +500,35 @@ processChatCommand = \case
       unless (memberActive membership) $ throwChatError CEGroupMemberUserRemoved
       ci@(CChatItem msgDir ChatItem {meta = CIMeta {itemSharedMsgId}}) <- withStore $ \db -> getGroupChatItem db user chatId itemId
       case (mode, msgDir, itemSharedMsgId) of
-        (CIDMInternal, _, _) -> deleteGroupCI user gInfo ci True
+        (CIDMInternal, _, _) -> deleteGroupCI user gInfo ci True False
         (CIDMBroadcast, SMDSnd, Just itemSharedMId) -> do
           SndMessage {msgId} <- sendGroupMessage gInfo ms (XMsgDel itemSharedMId)
           setActive $ ActiveG gName
           if groupFeatureAllowed SGFFullDelete gInfo
-            then deleteGroupCI user gInfo ci True
+            then deleteGroupCI user gInfo ci True False
             else markGroupCIDeleted user gInfo ci msgId True
         (CIDMBroadcast, _, _) -> throwChatError CEInvalidChatItemDelete
     CTContactRequest -> pure $ chatCmdError "not supported"
     CTContactConnection -> pure $ chatCmdError "not supported"
-  APIChatRead (ChatRef cType chatId) fromToIds -> case cType of
-    CTDirect -> withStore' (\db -> updateDirectChatItemsRead db chatId fromToIds) $> CRCmdOk
-    CTGroup -> withStore' (\db -> updateGroupChatItemsRead db chatId fromToIds) $> CRCmdOk
+  APIChatRead (ChatRef cType chatId) fromToIds -> withUser $ \user@User {userId} -> case cType of
+    CTDirect -> do
+      timedItems <- withStore' $ \db -> getDirectUnreadTimedItems db user chatId fromToIds
+      ts <- liftIO getCurrentTime
+      forM_ timedItems $ \(itemId, ttl) -> do
+        let deleteAt = addUTCTime (toEnum ttl) ts
+        withStore' $ \db -> setDirectChatItemDeleteAt db user chatId itemId deleteAt
+        when (ttl <= cleanupManagerInterval) $ startTimedItemThread user (ChatRef CTDirect chatId, itemId) deleteAt
+      withStore' $ \db -> updateDirectChatItemsRead db userId chatId fromToIds
+      pure CRChatRead
+    CTGroup -> do
+      timedItems <- withStore' $ \db -> getGroupUnreadTimedItems db user chatId fromToIds
+      ts <- liftIO getCurrentTime
+      forM_ timedItems $ \(itemId, ttl) -> do
+        let deleteAt = addUTCTime (toEnum ttl) ts
+        withStore' $ \db -> setGroupChatItemDeleteAt db user chatId itemId deleteAt
+        when (ttl <= cleanupManagerInterval) $ startTimedItemThread user (ChatRef CTGroup chatId, itemId) deleteAt
+      withStore' $ \db -> updateGroupChatItemsRead db userId chatId fromToIds
+      pure CRChatRead
     CTContactRequest -> pure $ chatCmdError "not supported"
     CTContactConnection -> pure $ chatCmdError "not supported"
   APIChatUnread (ChatRef cType chatId) unreadChat -> withUser $ \user -> case cType of
@@ -606,7 +659,7 @@ processChatCommand = \case
     withCurrentCall contactId $ \userId ct Call {chatItemId, callState} -> case callState of
       CallInvitationReceived {} -> do
         let aciContent = ACIContent SMDRcv $ CIRcvCall CISCallRejected 0
-        withStore' $ \db -> updateDirectChatItemsRead db contactId $ Just (chatItemId, chatItemId)
+        withStore' $ \db -> updateDirectChatItemsRead db userId contactId $ Just (chatItemId, chatItemId)
         updateDirectChatItemView userId ct chatItemId aciContent Nothing $> Nothing
       _ -> throwChatError . CECallState $ callStateTag callState
   APISendCallOffer contactId WebRTCCallOffer {callType, rtcSession} ->
@@ -618,7 +671,7 @@ processChatCommand = \case
             callState' = CallOfferSent {localCallType = callType, peerCallType, localCallSession = rtcSession, sharedKey}
             aciContent = ACIContent SMDRcv $ CIRcvCall CISCallAccepted 0
         (SndMessage {msgId}, _) <- sendDirectContactMessage ct (XCallOffer callId offer)
-        withStore' $ \db -> updateDirectChatItemsRead db contactId $ Just (chatItemId, chatItemId)
+        withStore' $ \db -> updateDirectChatItemsRead db userId contactId $ Just (chatItemId, chatItemId)
         updateDirectChatItemView userId ct chatItemId aciContent $ Just msgId
         pure $ Just call {callState = callState'}
       _ -> throwChatError . CECallState $ callStateTag callState
@@ -866,7 +919,7 @@ processChatCommand = \case
       forM_ cts $ \ct ->
         void
           ( do
-              (sndMsg, _) <- sendDirectContactMessage ct (XMsgNew $ MCSimple (extMsgContent mc Nothing))
+              (sndMsg, _) <- sendDirectContactMessage ct (XMsgNew $ MCSimple (extMsgContent mc Nothing Nothing))
               saveSndChatItem user (CDDirectSnd ct) sndMsg (CISndMsgContent mc) Nothing Nothing
           )
           `catchError` (toView . CRChatError)
@@ -1645,6 +1698,52 @@ subscribeUserConnections agentBatchSubscribe user = do
               Just _ -> Nothing
               _ -> Just . ChatError . CEAgentNoSubResult $ AgentConnId connId
 
+cleanupManagerInterval :: Int
+cleanupManagerInterval = 1800 -- 30 minutes
+
+cleanupManager :: forall m. ChatMonad m => User -> m ()
+cleanupManager user = do
+  forever $ do
+    flip catchError (toView . CRChatError) $ do
+      agentStarted <- asks agentAsync
+      atomically $ readTVar agentStarted >>= \a -> unless (isJust a) retry
+      cleanupTimedItems
+    threadDelay $ cleanupManagerInterval * 1000000
+  where
+    cleanupTimedItems = do
+      ts <- liftIO getCurrentTime
+      let startTimedThreadCutoff = addUTCTime (toEnum cleanupManagerInterval) ts
+      timedItems <- withStore' $ \db -> getTimedItems db user startTimedThreadCutoff
+      forM_ timedItems $ uncurry (startTimedItemThread user)
+
+startTimedItemThread :: ChatMonad m => User -> (ChatRef, ChatItemId) -> UTCTime -> m ()
+startTimedItemThread user itemRef deleteAt = do
+  itemThreads <- asks timedItemThreads
+  threadTVar_ <- atomically $ do
+    exists <- TM.member itemRef itemThreads
+    if exists
+      then do
+        threadTVar <- newTVar Nothing
+        TM.insert itemRef threadTVar itemThreads
+        pure $ Just threadTVar
+      else pure Nothing
+  forM_ threadTVar_ $ \threadTVar -> do
+    tId <- mkWeakThreadId =<< deleteTimedItem user itemRef deleteAt `forkFinally` const (atomically $ TM.delete itemRef itemThreads)
+    atomically $ writeTVar threadTVar (Just tId)
+
+deleteTimedItem :: ChatMonad m => User -> (ChatRef, ChatItemId) -> UTCTime -> m ()
+deleteTimedItem user@User {userId} (ChatRef cType chatId, itemId) deleteAt = do
+  ts <- liftIO getCurrentTime
+  threadDelay $ diffInMicros deleteAt ts
+  case cType of
+    CTDirect -> do
+      (ct, ci) <- withStore $ \db -> (,) <$> getContact db user chatId <*> getDirectChatItem db userId chatId itemId
+      deleteDirectCI user ct ci True True >>= toView
+    CTGroup -> do
+      (gInfo, ci) <- withStore $ \db -> (,) <$> getGroupInfo db user chatId <*> getGroupChatItem db user chatId itemId
+      deleteGroupCI user gInfo ci True True >>= toView
+    _ -> toView . CRChatError . ChatError $ CEInternalError "bad deleteTimedItem cType"
+
 expireChatItems :: forall m. ChatMonad m => User -> Int64 -> Bool -> m ()
 expireChatItems user ttl sync = do
   currentTs <- liftIO getCurrentTime
@@ -1846,7 +1945,7 @@ processAgentMessage (Just user@User {userId}) corrId agentConnId agentMessage =
                 withStore' (\db -> getUserContactLinkById db userId userContactLinkId) >>= \case
                   Just (UserContactLink {autoAccept = Just AutoAccept {autoReply = mc_}}, groupId_) -> do
                     forM_ mc_ $ \mc -> do
-                      (msg, _) <- sendDirectContactMessage ct (XMsgNew $ MCSimple (extMsgContent mc Nothing))
+                      (msg, _) <- sendDirectContactMessage ct (XMsgNew $ MCSimple (extMsgContent mc Nothing Nothing))
                       ci <- saveSndChatItem user (CDDirectSnd ct) msg (CISndMsgContent mc) Nothing Nothing
                       toView . CRNewChatItem $ AChatItem SCTDirect SMDSnd (DirectChat ct) ci
                     forM_ groupId_ $ \groupId -> do
@@ -2315,9 +2414,12 @@ processAgentMessage (Just user@User {userId}) corrId agentConnId agentMessage =
             setActive $ ActiveC c
       where
         newChatItem ciContent ciFile_ = do
-          ci <- saveRcvChatItem user (CDDirectRcv ct) msg msgMeta ciContent ciFile_
+          ci <- saveRcvChatItemTimed user (CDDirectRcv ct) msg msgMeta ciContent ciFile_ timed
           toView . CRNewChatItem $ AChatItem SCTDirect SMDRcv (DirectChat ct) ci
           pure ci
+        timed = case (contactCITimedTTL ct, mcExtMsgContent mc) of
+          (Just _, ExtMsgContent _ _ (Just ttl) _) -> Just $ CITimed ttl Nothing
+          _ -> Nothing
 
     processFileInvitation :: Maybe FileInvitation -> MsgContent -> (DB.Connection -> FileInvitation -> Maybe InlineFileMode -> Integer -> IO RcvFileTransfer) -> m (Maybe (CIFile 'MDRcv))
     processFileInvitation fInv_ mc createRcvFT = forM fInv_ $ \fInv@FileInvitation {fileName, fileSize} -> do
@@ -2341,9 +2443,11 @@ processAgentMessage (Just user@User {userId}) corrId agentConnId agentMessage =
             -- This patches initial sharedMsgId into chat item when locally deleted chat item
             -- received an update from the sender, so that it can be referenced later (e.g. by broadcast delete).
             -- Chat item and update message which created it will have different sharedMsgId in this case...
-            ci <- saveRcvChatItem' user (CDDirectRcv ct) msg (Just sharedMsgId) msgMeta (CIRcvMsgContent mc) Nothing
+            ci <- saveRcvChatItem' user (CDDirectRcv ct) msg (Just sharedMsgId) msgMeta (CIRcvMsgContent mc) Nothing timed
             toView . CRChatItemUpdated $ AChatItem SCTDirect SMDRcv (DirectChat ct) ci
             setActive $ ActiveC c
+            where
+              timed = contactCITimedTTL ct >>= \ttl -> Just $ CITimed ttl Nothing
           _ -> throwError e
       where
         updateRcvChatItem = do
@@ -2365,7 +2469,7 @@ processAgentMessage (Just user@User {userId}) corrId agentConnId agentMessage =
           case msgDir of
             SMDRcv ->
               if featureAllowed SCFFullDelete forContact ct
-                then deleteDirectCI user ct ci False >>= toView
+                then deleteDirectCI user ct ci False False >>= toView
                 else markDirectCIDeleted user ct ci msgId False >>= toView
             SMDSnd -> messageError "x.msg.del: contact attempted invalid message delete"
 
@@ -2383,9 +2487,12 @@ processAgentMessage (Just user@User {userId}) corrId agentConnId agentMessage =
             setActive $ ActiveG g
       where
         newChatItem ciContent ciFile_ = do
-          ci <- saveRcvChatItem user (CDGroupRcv gInfo m) msg msgMeta ciContent ciFile_
+          ci <- saveRcvChatItemTimed user (CDGroupRcv gInfo m) msg msgMeta ciContent ciFile_ timed
           groupMsgToView gInfo m ci msgMeta
           pure ci
+        timed = case (groupCITimedTTL gInfo, mcExtMsgContent mc) of
+          (Just _, ExtMsgContent _ _ (Just ttl) _) -> Just $ CITimed ttl Nothing
+          _ -> Nothing
 
     groupMessageUpdate :: GroupInfo -> GroupMember -> SharedMsgId -> MsgContent -> RcvMessage -> MsgMeta -> m ()
     groupMessageUpdate gInfo@GroupInfo {groupId, localDisplayName = g} m@GroupMember {groupMemberId, memberId} sharedMsgId mc msg@RcvMessage {msgId} msgMeta =
@@ -2395,9 +2502,11 @@ processAgentMessage (Just user@User {userId}) corrId agentConnId agentMessage =
             -- This patches initial sharedMsgId into chat item when locally deleted chat item
             -- received an update from the sender, so that it can be referenced later (e.g. by broadcast delete).
             -- Chat item and update message which created it will have different sharedMsgId in this case...
-            ci <- saveRcvChatItem' user (CDGroupRcv gInfo m) msg (Just sharedMsgId) msgMeta (CIRcvMsgContent mc) Nothing
+            ci <- saveRcvChatItem' user (CDGroupRcv gInfo m) msg (Just sharedMsgId) msgMeta (CIRcvMsgContent mc) Nothing timed
             toView . CRChatItemUpdated $ AChatItem SCTGroup SMDRcv (GroupChat gInfo) ci
             setActive $ ActiveG g
+            where
+              timed = groupCITimedTTL gInfo >>= \ttl -> Just $ CITimed ttl Nothing
           _ -> throwError e
       where
         updateRcvChatItem = do
@@ -2420,7 +2529,7 @@ processAgentMessage (Just user@User {userId}) corrId agentConnId agentMessage =
           if sameMemberId memberId m
             then
               if groupFeatureAllowed SGFFullDelete gInfo
-                then deleteGroupCI user gInfo ci False >>= toView
+                then deleteGroupCI user gInfo ci False False >>= toView
                 else markGroupCIDeleted user gInfo ci msgId False >>= toView
             else messageError "x.msg.del: group member attempted to delete a message of another member" -- shouldn't happen now that query includes group member id
         (SMDSnd, _) -> messageError "x.msg.del: group member attempted invalid message delete"
@@ -3151,41 +3260,49 @@ saveRcvMSG Connection {connId} connOrGroupId agentMsgMeta msgBody agentAckCmdId
   withStore' $ \db -> createNewMessageAndRcvMsgDelivery db connOrGroupId newMsg sharedMsgId_ rcvMsgDelivery
 
 saveSndChatItem :: ChatMonad m => User -> ChatDirection c 'MDSnd -> SndMessage -> CIContent 'MDSnd -> Maybe (CIFile 'MDSnd) -> Maybe (CIQuote c) -> m (ChatItem c 'MDSnd)
-saveSndChatItem user cd msg@SndMessage {sharedMsgId} content ciFile quotedItem = do
+saveSndChatItem user cd msg content ciFile quotedItem =
+  saveSndChatItemTimed user cd msg content ciFile quotedItem Nothing
+
+saveSndChatItemTimed :: ChatMonad m => User -> ChatDirection c 'MDSnd -> SndMessage -> CIContent 'MDSnd -> Maybe (CIFile 'MDSnd) -> Maybe (CIQuote c) -> Maybe CITimed -> m (ChatItem c 'MDSnd)
+saveSndChatItemTimed user cd msg@SndMessage {sharedMsgId} content ciFile quotedItem timed = do
   createdAt <- liftIO getCurrentTime
-  ciId <- withStore' $ \db -> createNewSndChatItem db user cd msg content quotedItem createdAt
+  ciId <- withStore' $ \db -> createNewSndChatItem db user cd msg content quotedItem createdAt timed
   forM_ ciFile $ \CIFile {fileId} -> withStore' $ \db -> updateFileTransferChatItemId db fileId ciId
-  liftIO $ mkChatItem cd ciId content ciFile quotedItem (Just sharedMsgId) createdAt createdAt
+  liftIO $ mkChatItem cd ciId content ciFile quotedItem (Just sharedMsgId) createdAt createdAt timed
 
 saveRcvChatItem :: ChatMonad m => User -> ChatDirection c 'MDRcv -> RcvMessage -> MsgMeta -> CIContent 'MDRcv -> Maybe (CIFile 'MDRcv) -> m (ChatItem c 'MDRcv)
-saveRcvChatItem user cd msg@RcvMessage {sharedMsgId_} = saveRcvChatItem' user cd msg sharedMsgId_
+saveRcvChatItem user cd msg msgMeta content ciFile =
+  saveRcvChatItemTimed user cd msg msgMeta content ciFile Nothing
 
-saveRcvChatItem' :: ChatMonad m => User -> ChatDirection c 'MDRcv -> RcvMessage -> Maybe SharedMsgId -> MsgMeta -> CIContent 'MDRcv -> Maybe (CIFile 'MDRcv) -> m (ChatItem c 'MDRcv)
-saveRcvChatItem' user cd msg sharedMsgId_ MsgMeta {broker = (_, brokerTs)} content ciFile = do
+saveRcvChatItemTimed :: ChatMonad m => User -> ChatDirection c 'MDRcv -> RcvMessage -> MsgMeta -> CIContent 'MDRcv -> Maybe (CIFile 'MDRcv) -> Maybe CITimed -> m (ChatItem c 'MDRcv)
+saveRcvChatItemTimed user cd msg@RcvMessage {sharedMsgId_} = saveRcvChatItem' user cd msg sharedMsgId_
+
+saveRcvChatItem' :: ChatMonad m => User -> ChatDirection c 'MDRcv -> RcvMessage -> Maybe SharedMsgId -> MsgMeta -> CIContent 'MDRcv -> Maybe (CIFile 'MDRcv) -> Maybe CITimed -> m (ChatItem c 'MDRcv)
+saveRcvChatItem' user cd msg sharedMsgId_ MsgMeta {broker = (_, brokerTs)} content ciFile timed = do
   createdAt <- liftIO getCurrentTime
-  (ciId, quotedItem) <- withStore' $ \db -> createNewRcvChatItem db user cd msg sharedMsgId_ content brokerTs createdAt
+  (ciId, quotedItem) <- withStore' $ \db -> createNewRcvChatItem db user cd msg sharedMsgId_ content brokerTs createdAt timed
   forM_ ciFile $ \CIFile {fileId} -> withStore' $ \db -> updateFileTransferChatItemId db fileId ciId
-  liftIO $ mkChatItem cd ciId content ciFile quotedItem sharedMsgId_ brokerTs createdAt
+  liftIO $ mkChatItem cd ciId content ciFile quotedItem sharedMsgId_ brokerTs createdAt timed
 
-mkChatItem :: ChatDirection c d -> ChatItemId -> CIContent d -> Maybe (CIFile d) -> Maybe (CIQuote c) -> Maybe SharedMsgId -> ChatItemTs -> UTCTime -> IO (ChatItem c d)
-mkChatItem cd ciId content file quotedItem sharedMsgId itemTs currentTs = do
+mkChatItem :: ChatDirection c d -> ChatItemId -> CIContent d -> Maybe (CIFile d) -> Maybe (CIQuote c) -> Maybe SharedMsgId -> ChatItemTs -> UTCTime -> Maybe CITimed -> IO (ChatItem c d)
+mkChatItem cd ciId content file quotedItem sharedMsgId itemTs currentTs timed = do
   tz <- getCurrentTimeZone
   let itemText = ciContentToText content
       itemStatus = ciCreateStatus content
-      meta = mkCIMeta ciId content itemText itemStatus sharedMsgId False False tz currentTs itemTs currentTs currentTs
+      meta = mkCIMeta ciId content itemText itemStatus sharedMsgId False False tz currentTs itemTs currentTs currentTs timed
   pure ChatItem {chatDir = toCIDirection cd, meta, content, formattedText = parseMaybeMarkdownList itemText, quotedItem, file}
 
-deleteDirectCI :: ChatMonad m => User -> Contact -> CChatItem 'CTDirect -> Bool -> m ChatResponse
-deleteDirectCI user ct ci@(CChatItem msgDir deletedItem@ChatItem {file}) byUser = do
+deleteDirectCI :: ChatMonad m => User -> Contact -> CChatItem 'CTDirect -> Bool -> Bool -> m ChatResponse
+deleteDirectCI user ct ci@(CChatItem msgDir deletedItem@ChatItem {file}) byUser timed = do
   deleteCIFile user file
   withStore' $ \db -> deleteDirectChatItem db user ct ci
-  pure $ CRChatItemDeleted (AChatItem SCTDirect msgDir (DirectChat ct) deletedItem) Nothing byUser
+  pure $ CRChatItemDeleted (AChatItem SCTDirect msgDir (DirectChat ct) deletedItem) Nothing byUser timed
 
-deleteGroupCI :: ChatMonad m => User -> GroupInfo -> CChatItem 'CTGroup -> Bool -> m ChatResponse
-deleteGroupCI user gInfo ci@(CChatItem msgDir deletedItem@ChatItem {file}) byUser = do
+deleteGroupCI :: ChatMonad m => User -> GroupInfo -> CChatItem 'CTGroup -> Bool -> Bool -> m ChatResponse
+deleteGroupCI user gInfo ci@(CChatItem msgDir deletedItem@ChatItem {file}) byUser timed = do
   deleteCIFile user file
   withStore' $ \db -> deleteGroupChatItem db user gInfo ci
-  pure $ CRChatItemDeleted (AChatItem SCTGroup msgDir (GroupChat gInfo) deletedItem) Nothing byUser
+  pure $ CRChatItemDeleted (AChatItem SCTGroup msgDir (GroupChat gInfo) deletedItem) Nothing byUser timed
 
 deleteCIFile :: (ChatMonad m, MsgDirectionI d) => User -> Maybe (CIFile d) -> m ()
 deleteCIFile user file =
@@ -3196,12 +3313,12 @@ deleteCIFile user file =
 markDirectCIDeleted :: ChatMonad m => User -> Contact -> CChatItem 'CTDirect -> MessageId -> Bool -> m ChatResponse
 markDirectCIDeleted user ct ci@(CChatItem msgDir deletedItem) msgId byUser = do
   toCi <- withStore' $ \db -> markDirectChatItemDeleted db user ct ci msgId
-  pure $ CRChatItemDeleted (AChatItem SCTDirect msgDir (DirectChat ct) deletedItem) (Just toCi) byUser
+  pure $ CRChatItemDeleted (AChatItem SCTDirect msgDir (DirectChat ct) deletedItem) (Just toCi) byUser False
 
 markGroupCIDeleted :: ChatMonad m => User -> GroupInfo -> CChatItem 'CTGroup -> MessageId -> Bool -> m ChatResponse
 markGroupCIDeleted user gInfo ci@(CChatItem msgDir deletedItem) msgId byUser = do
   toCi <- withStore' $ \db -> markGroupChatItemDeleted db user gInfo ci msgId
-  pure $ CRChatItemDeleted (AChatItem SCTGroup msgDir (GroupChat gInfo) deletedItem) (Just toCi) byUser
+  pure $ CRChatItemDeleted (AChatItem SCTGroup msgDir (GroupChat gInfo) deletedItem) (Just toCi) byUser False
 
 createAgentConnectionAsync :: forall m c. (ChatMonad m, ConnectionModeI c) => User -> CommandFunction -> Bool -> SConnectionMode c -> m (CommandId, ConnId)
 createAgentConnectionAsync user cmdFunction enableNtfs cMode = do
@@ -3266,7 +3383,7 @@ createInternalChatItem user cd content itemTs_ = do
   createdAt <- liftIO getCurrentTime
   let itemTs = fromMaybe createdAt itemTs_
   ciId <- withStore' $ \db -> createNewChatItemNoMsg db user cd content itemTs createdAt
-  ci <- liftIO $ mkChatItem cd ciId content Nothing Nothing Nothing itemTs createdAt
+  ci <- liftIO $ mkChatItem cd ciId content Nothing Nothing Nothing itemTs createdAt Nothing
   toView $ CRNewChatItem $ AChatItem (chatTypeI @c) (msgDirection @d) (toChatInfo cd) ci
 
 getCreateActiveUser :: SQLiteStore -> IO User

src/Simplex/Chat/Controller.hs

@@ -10,6 +10,7 @@
 
 module Simplex.Chat.Controller where
 
+import Control.Concurrent (ThreadId)
 import Control.Concurrent.Async (Async)
 import Control.Exception
 import Control.Monad.Except
@@ -53,6 +54,7 @@ import Simplex.Messaging.Protocol (AProtocolType, CorrId, MsgFlags)
 import Simplex.Messaging.TMap (TMap)
 import Simplex.Messaging.Transport.Client (TransportHost)
 import System.IO (Handle)
+import System.Mem.Weak (Weak)
 import UnliftIO.STM
 
 versionNumber :: String
@@ -121,7 +123,9 @@ data ChatController = ChatController
     filesFolder :: TVar (Maybe FilePath), -- path to files folder for mobile apps,
     incognitoMode :: TVar Bool,
     expireCIsAsync :: TVar (Maybe (Async ())),
-    expireCIs :: TVar Bool
+    expireCIs :: TVar Bool,
+    cleanupManagerAsync :: TVar (Maybe (Async ())),
+    timedItemThreads :: TMap (ChatRef, ChatItemId) (TVar (Maybe (Weak ThreadId)))
   }
 
 data HelpSection = HSMain | HSFiles | HSGroups | HSMyAddress | HSMarkdown | HSMessages | HSSettings
@@ -292,8 +296,9 @@ data ChatResponse
   | CRNewChatItem {chatItem :: AChatItem}
   | CRChatItemStatusUpdated {chatItem :: AChatItem}
   | CRChatItemUpdated {chatItem :: AChatItem}
-  | CRChatItemDeleted {deletedChatItem :: AChatItem, toChatItem :: Maybe AChatItem, byUser :: Bool}
+  | CRChatItemDeleted {deletedChatItem :: AChatItem, toChatItem :: Maybe AChatItem, byUser :: Bool, timed :: Bool}
   | CRChatItemDeletedNotFound {contact :: Contact, sharedMsgId :: SharedMsgId}
+  | CRChatRead
   | CRBroadcastSent MsgContent Int ZonedTime
   | CRMsgIntegrityError {msgError :: MsgErrorType}
   | CRCmdAccepted {corr :: CorrId}
@@ -566,6 +571,7 @@ data ChatErrorType
   | CEAgentNoSubResult {agentConnId :: AgentConnId}
   | CECommandError {message :: String}
   | CEAgentCommandError {message :: String}
+  | CEInternalError {message :: String}
   deriving (Show, Exception, Generic)
 
 instance ToJSON ChatErrorType where

src/Simplex/Chat/Messages.hs

@@ -39,13 +39,23 @@ import Simplex.Messaging.Protocol (MsgBody)
 import Simplex.Messaging.Util (eitherToMaybe, safeDecodeUtf8, (<$?>))
 
 data ChatType = CTDirect | CTGroup | CTContactRequest | CTContactConnection
-  deriving (Show, Generic)
+  deriving (Eq, Show, Ord, Generic)
+
+serializeChatType :: ChatType -> String
+serializeChatType = \case
+  CTDirect -> "@"
+  CTGroup -> "#"
+  CTContactRequest -> "?" -- this isn't being parsed
+  CTContactConnection -> ":"
 
 data ChatName = ChatName ChatType Text
   deriving (Show)
 
 data ChatRef = ChatRef ChatType Int64
-  deriving (Show)
+  deriving (Eq, Show, Ord)
+
+serializeChatRef :: ChatRef -> String
+serializeChatRef (ChatRef cType chatId) = serializeChatType cType <> show chatId
 
 instance ToJSON ChatType where
   toJSON = J.genericToJSON . enumJSON $ dropPrefix "CT"
@@ -66,6 +76,13 @@ chatInfoUpdatedAt = \case
   ContactRequest UserContactRequest {updatedAt} -> updatedAt
   ContactConnection PendingContactConnection {updatedAt} -> updatedAt
 
+chatInfoToRef :: ChatInfo c -> ChatRef
+chatInfoToRef = \case
+  DirectChat Contact {contactId} -> ChatRef CTDirect contactId
+  GroupChat GroupInfo {groupId} -> ChatRef CTGroup groupId
+  ContactRequest UserContactRequest {contactRequestId} -> ChatRef CTContactRequest contactRequestId
+  ContactConnection PendingContactConnection {pccConnId} -> ChatRef CTContactConnection pccConnId
+
 data JSONChatInfo
   = JCInfoDirect {contact :: Contact}
   | JCInfoGroup {groupInfo :: GroupInfo}
@@ -259,20 +276,41 @@ data CIMeta (d :: MsgDirection) = CIMeta
     editable :: Bool,
     localItemTs :: ZonedTime,
     createdAt :: UTCTime,
-    updatedAt :: UTCTime
+    updatedAt :: UTCTime,
+    timed :: Maybe CITimed
   }
   deriving (Show, Generic)
 
-mkCIMeta :: ChatItemId -> CIContent d -> Text -> CIStatus d -> Maybe SharedMsgId -> Bool -> Bool -> TimeZone -> UTCTime -> ChatItemTs -> UTCTime -> UTCTime -> CIMeta d
-mkCIMeta itemId itemContent itemText itemStatus itemSharedMsgId itemDeleted itemEdited tz currentTs itemTs createdAt updatedAt =
+mkCIMeta :: ChatItemId -> CIContent d -> Text -> CIStatus d -> Maybe SharedMsgId -> Bool -> Bool -> TimeZone -> UTCTime -> ChatItemTs -> UTCTime -> UTCTime -> Maybe CITimed -> CIMeta d
+mkCIMeta itemId itemContent itemText itemStatus itemSharedMsgId itemDeleted itemEdited tz currentTs itemTs createdAt updatedAt timed =
   let localItemTs = utcToZonedTime tz itemTs
       editable = case itemContent of
         CISndMsgContent _ -> diffUTCTime currentTs itemTs < nominalDay && not itemDeleted
         _ -> False
-   in CIMeta {itemId, itemTs, itemText, itemStatus, itemSharedMsgId, itemDeleted, itemEdited, editable, localItemTs, createdAt, updatedAt}
+   in CIMeta {itemId, itemTs, itemText, itemStatus, itemSharedMsgId, itemDeleted, itemEdited, editable, localItemTs, createdAt, updatedAt, timed}
 
 instance ToJSON (CIMeta d) where toEncoding = J.genericToEncoding J.defaultOptions
 
+data CITimed = CITimed
+  { ttl :: Int, -- seconds
+    deleteAt :: Maybe UTCTime
+  }
+  deriving (Show, Generic)
+
+instance ToJSON CITimed where toEncoding = J.genericToEncoding J.defaultOptions
+
+contactCITimedTTL :: Contact -> Maybe Int
+contactCITimedTTL Contact {mergedPreferences = ContactUserPreferences {timedMessages = ContactUserPreference {enabled, userPreference}}}
+  | forUser enabled && forContact enabled = case userPreference of
+    CUPContact TimedMessagesPreference {ttl = t} -> Just t
+    CUPUser TimedMessagesPreference {ttl = t} -> Just t
+  | otherwise = Nothing
+
+groupCITimedTTL :: GroupInfo -> Maybe Int
+groupCITimedTTL GroupInfo {fullGroupPreferences = FullGroupPreferences {timedMessages = TimedMessagesGroupPreference {enable, ttl}}}
+  | enable == FEOn = Just ttl
+  | otherwise = Nothing
+
 data CIQuote (c :: ChatType) = CIQuote
   { chatDir :: CIQDirection c,
     itemId :: Maybe ChatItemId, -- Nothing in case MsgRef references the item the user did not receive yet

src/Simplex/Chat/Migrations/M20221212_chat_items_timed.hs

@@ -0,0 +1,16 @@
+{-# LANGUAGE QuasiQuotes #-}
+
+module Simplex.Chat.Migrations.M20221212_chat_items_timed where
+
+import Database.SQLite.Simple (Query)
+import Database.SQLite.Simple.QQ (sql)
+
+m20221212_chat_items_timed :: Query
+m20221212_chat_items_timed =
+  [sql|
+ALTER TABLE chat_items ADD COLUMN timed_ttl INTEGER;
+
+ALTER TABLE chat_items ADD COLUMN timed_delete_at TEXT;
+
+CREATE INDEX idx_chat_items_timed_delete_at ON chat_items(timed_delete_at);
+|]

src/Simplex/Chat/Migrations/chat_schema.sql

@@ -365,7 +365,9 @@ CREATE TABLE chat_items(
   quoted_content TEXT,
   quoted_sent INTEGER,
   quoted_member_id BLOB,
-  item_edited INTEGER
+  item_edited INTEGER,
+  timed_ttl INTEGER,
+  timed_delete_at TEXT
 );
 CREATE TABLE chat_item_messages(
   chat_item_id INTEGER NOT NULL REFERENCES chat_items ON DELETE CASCADE,
@@ -456,3 +458,4 @@ CREATE UNIQUE INDEX idx_snd_files_last_inline_msg_delivery_id ON snd_files(
 CREATE INDEX idx_messages_connection_id ON messages(connection_id);
 CREATE INDEX idx_chat_items_group_member_id ON chat_items(group_member_id);
 CREATE INDEX idx_chat_items_contact_id ON chat_items(contact_id);
+CREATE INDEX idx_chat_items_timed_delete_at ON chat_items(timed_delete_at);

src/Simplex/Chat/Protocol.hs

@@ -367,8 +367,8 @@ parseMsgContainer v =
   where
     mc = ExtMsgContent <$> v .: "content" <*> v .:? "file" <*> v .:? "ttl" <*> v .:? "live"
 
-extMsgContent :: MsgContent -> Maybe FileInvitation -> ExtMsgContent
-extMsgContent mc file = ExtMsgContent mc file Nothing Nothing
+extMsgContent :: MsgContent -> Maybe FileInvitation -> Maybe Int -> ExtMsgContent
+extMsgContent mc file ttl = ExtMsgContent mc file ttl Nothing
 
 instance FromJSON MsgContent where
   parseJSON (J.Object v) =

src/Simplex/Chat/Store.hs

@@ -208,7 +208,11 @@ module Simplex.Chat.Store
     deleteGroupChatItem,
     markGroupChatItemDeleted,
     updateDirectChatItemsRead,
+    getDirectUnreadTimedItems,
+    setDirectChatItemDeleteAt,
     updateGroupChatItemsRead,
+    getGroupUnreadTimedItems,
+    setGroupChatItemDeleteAt,
     getSMPServers,
     overwriteSMPServers,
     createCall,
@@ -222,6 +226,7 @@ module Simplex.Chat.Store
     setConnConnReqInv,
     getXGrpMemIntroContDirect,
     getXGrpMemIntroContGroup,
+    getTimedItems,
     getChatItemTTL,
     setChatItemTTL,
     getContactExpiredFileInfo,
@@ -255,7 +260,7 @@ import Data.Functor (($>))
 import Data.Int (Int64)
 import Data.List (sortBy, sortOn)
 import Data.List.NonEmpty (NonEmpty)
-import Data.Maybe (fromMaybe, isJust, isNothing, listToMaybe)
+import Data.Maybe (catMaybes, fromMaybe, isJust, isNothing, listToMaybe)
 import Data.Ord (Down (..))
 import Data.Text (Text)
 import qualified Data.Text as T
@@ -310,6 +315,7 @@ import Simplex.Chat.Migrations.M20221130_delete_item_deleted
 import Simplex.Chat.Migrations.M20221209_verified_connection
 import Simplex.Chat.Migrations.M20221210_idxs
 import Simplex.Chat.Migrations.M20221211_group_description
+import Simplex.Chat.Migrations.M20221212_chat_items_timed
 import Simplex.Chat.Protocol
 import Simplex.Chat.Types
 import Simplex.Messaging.Agent.Protocol (ACorrId, AgentMsgId, ConnId, InvitationId, MsgMeta (..))
@@ -363,7 +369,8 @@ schemaMigrations =
     ("20221130_delete_item_deleted", m20221130_delete_item_deleted),
     ("20221209_verified_connection", m20221209_verified_connection),
     ("20221210_idxs", m20221210_idxs),
-    ("20221211_group_description", m20221211_group_description)
+    ("20221211_group_description", m20221211_group_description),
+    ("20221212_chat_items_timed", m20221212_chat_items_timed)
   ]
 
 -- | The list of migrations in ascending order by date
@@ -3130,7 +3137,7 @@ deletePendingGroupMessage db groupMemberId messageId =
 
 type NewQuoteRow = (Maybe SharedMsgId, Maybe UTCTime, Maybe MsgContent, Maybe Bool, Maybe MemberId)
 
-createNewSndChatItem :: DB.Connection -> User -> ChatDirection c 'MDSnd -> SndMessage -> CIContent 'MDSnd -> Maybe (CIQuote c) -> UTCTime -> IO ChatItemId
+createNewSndChatItem :: DB.Connection -> User -> ChatDirection c 'MDSnd -> SndMessage -> CIContent 'MDSnd -> Maybe (CIQuote c) -> UTCTime -> Maybe CITimed -> IO ChatItemId
 createNewSndChatItem db user chatDirection SndMessage {msgId, sharedMsgId} ciContent quotedItem createdAt =
   createNewChatItem_ db user chatDirection createdByMsgId (Just sharedMsgId) ciContent quoteRow createdAt createdAt
   where
@@ -3146,9 +3153,9 @@ createNewSndChatItem db user chatDirection SndMessage {msgId, sharedMsgId} ciCon
           CIQGroupRcv (Just GroupMember {memberId}) -> (Just False, Just memberId)
           CIQGroupRcv Nothing -> (Just False, Nothing)
 
-createNewRcvChatItem :: DB.Connection -> User -> ChatDirection c 'MDRcv -> RcvMessage -> Maybe SharedMsgId -> CIContent 'MDRcv -> UTCTime -> UTCTime -> IO (ChatItemId, Maybe (CIQuote c))
-createNewRcvChatItem db user chatDirection RcvMessage {msgId, chatMsgEvent} sharedMsgId_ ciContent itemTs createdAt = do
-  ciId <- createNewChatItem_ db user chatDirection (Just msgId) sharedMsgId_ ciContent quoteRow itemTs createdAt
+createNewRcvChatItem :: DB.Connection -> User -> ChatDirection c 'MDRcv -> RcvMessage -> Maybe SharedMsgId -> CIContent 'MDRcv -> UTCTime -> UTCTime -> Maybe CITimed -> IO (ChatItemId, Maybe (CIQuote c))
+createNewRcvChatItem db user chatDirection RcvMessage {msgId, chatMsgEvent} sharedMsgId_ ciContent itemTs createdAt timed = do
+  ciId <- createNewChatItem_ db user chatDirection (Just msgId) sharedMsgId_ ciContent quoteRow itemTs createdAt timed
   quotedItem <- mapM (getChatItemQuote_ db user chatDirection) quotedMsg
   pure (ciId, quotedItem)
   where
@@ -3163,14 +3170,14 @@ createNewRcvChatItem db user chatDirection RcvMessage {msgId, chatMsgEvent} shar
             (Just $ Just userMemberId == memberId, memberId)
 
 createNewChatItemNoMsg :: forall c d. MsgDirectionI d => DB.Connection -> User -> ChatDirection c d -> CIContent d -> UTCTime -> UTCTime -> IO ChatItemId
-createNewChatItemNoMsg db user chatDirection ciContent =
-  createNewChatItem_ db user chatDirection Nothing Nothing ciContent quoteRow
+createNewChatItemNoMsg db user chatDirection ciContent itemTs createdAt =
+  createNewChatItem_ db user chatDirection Nothing Nothing ciContent quoteRow itemTs createdAt Nothing
   where
     quoteRow :: NewQuoteRow
     quoteRow = (Nothing, Nothing, Nothing, Nothing, Nothing)
 
-createNewChatItem_ :: forall c d. MsgDirectionI d => DB.Connection -> User -> ChatDirection c d -> Maybe MessageId -> Maybe SharedMsgId -> CIContent d -> NewQuoteRow -> UTCTime -> UTCTime -> IO ChatItemId
-createNewChatItem_ db User {userId} chatDirection msgId_ sharedMsgId ciContent quoteRow itemTs createdAt = do
+createNewChatItem_ :: forall c d. MsgDirectionI d => DB.Connection -> User -> ChatDirection c d -> Maybe MessageId -> Maybe SharedMsgId -> CIContent d -> NewQuoteRow -> UTCTime -> UTCTime -> Maybe CITimed -> IO ChatItemId
+createNewChatItem_ db User {userId} chatDirection msgId_ sharedMsgId ciContent quoteRow itemTs createdAt timed = do
   DB.execute
     db
     [sql|
@@ -3178,18 +3185,22 @@ createNewChatItem_ db User {userId} chatDirection msgId_ sharedMsgId ciContent q
         -- user and IDs
         user_id, created_by_msg_id, contact_id, group_id, group_member_id,
         -- meta
-        item_sent, item_ts, item_content, item_text, item_status, shared_msg_id, created_at, updated_at,
+        item_sent, item_ts, item_content, item_text, item_status, shared_msg_id, created_at, updated_at, timed_ttl, timed_delete_at,
         -- quote
         quoted_shared_msg_id, quoted_sent_at, quoted_content, quoted_sent, quoted_member_id
-      ) VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
+      ) VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
     |]
     ((userId, msgId_) :. idsRow :. itemRow :. quoteRow)
   ciId <- insertedRowId db
   forM_ msgId_ $ \msgId -> insertChatItemMessage_ db ciId msgId createdAt
   pure ciId
   where
-    itemRow :: (SMsgDirection d, UTCTime, CIContent d, Text, CIStatus d, Maybe SharedMsgId, UTCTime, UTCTime)
-    itemRow = (msgDirection @d, itemTs, ciContent, ciContentToText ciContent, ciCreateStatus ciContent, sharedMsgId, createdAt, createdAt)
+    itemRow :: (SMsgDirection d, UTCTime, CIContent d, Text, CIStatus d, Maybe SharedMsgId, UTCTime, UTCTime, Maybe Int, Maybe UTCTime)
+    itemRow = (msgDirection @d, itemTs, ciContent, ciContentToText ciContent, ciCreateStatus ciContent, sharedMsgId, createdAt, createdAt, timedTTL, timedDeleteAt)
+      where
+        (timedTTL, timedDeleteAt) = case timed of
+          Just CITimed {ttl, deleteAt} -> (Just ttl, deleteAt)
+          Nothing -> (Nothing, Nothing)
     idsRow :: (Maybe Int64, Maybe Int64, Maybe Int64)
     idsRow = case chatDirection of
       CDDirectRcv Contact {contactId} -> (Just contactId, Nothing, Nothing)
@@ -3292,7 +3303,7 @@ getDirectChatPreviews_ db user@User {userId} = do
           -- ChatStats
           COALESCE(ChatStats.UnreadCount, 0), COALESCE(ChatStats.MinUnread, 0), ct.unread_chat,
           -- ChatItem
-          i.chat_item_id, i.item_ts, i.item_content, i.item_text, i.item_status, i.shared_msg_id, i.item_deleted, i.item_edited, i.created_at, i.updated_at,
+          i.chat_item_id, i.item_ts, i.item_content, i.item_text, i.item_status, i.shared_msg_id, i.item_deleted, i.item_edited, i.created_at, i.updated_at, i.timed_ttl, i.timed_delete_at,
           -- CIFile
           f.file_id, f.file_name, f.file_size, f.file_path, f.ci_file_status,
           -- DirectQuote
@@ -3357,7 +3368,7 @@ getGroupChatPreviews_ db User {userId, userContactId} = do
           -- ChatStats
           COALESCE(ChatStats.UnreadCount, 0), COALESCE(ChatStats.MinUnread, 0), g.unread_chat,
           -- ChatItem
-          i.chat_item_id, i.item_ts, i.item_content, i.item_text, i.item_status, i.shared_msg_id, i.item_deleted, i.item_edited, i.created_at, i.updated_at,
+          i.chat_item_id, i.item_ts, i.item_content, i.item_text, i.item_status, i.shared_msg_id, i.item_deleted, i.item_edited, i.created_at, i.updated_at, i.timed_ttl, i.timed_delete_at,
           -- CIFile
           f.file_id, f.file_name, f.file_size, f.file_path, f.ci_file_status,
           -- Maybe GroupMember - sender
@@ -3516,7 +3527,7 @@ getDirectChatLast_ db user@User {userId} contactId count search = do
           [sql|
             SELECT
               -- ChatItem
-              i.chat_item_id, i.item_ts, i.item_content, i.item_text, i.item_status, i.shared_msg_id, i.item_deleted, i.item_edited, i.created_at, i.updated_at,
+              i.chat_item_id, i.item_ts, i.item_content, i.item_text, i.item_status, i.shared_msg_id, i.item_deleted, i.item_edited, i.created_at, i.updated_at, i.timed_ttl, i.timed_delete_at,
               -- CIFile
               f.file_id, f.file_name, f.file_size, f.file_path, f.ci_file_status,
               -- DirectQuote
@@ -3547,7 +3558,7 @@ getDirectChatAfter_ db user@User {userId} contactId afterChatItemId count search
           [sql|
             SELECT
               -- ChatItem
-              i.chat_item_id, i.item_ts, i.item_content, i.item_text, i.item_status, i.shared_msg_id, i.item_deleted, i.item_edited, i.created_at, i.updated_at,
+              i.chat_item_id, i.item_ts, i.item_content, i.item_text, i.item_status, i.shared_msg_id, i.item_deleted, i.item_edited, i.created_at, i.updated_at, i.timed_ttl, i.timed_delete_at,
               -- CIFile
               f.file_id, f.file_name, f.file_size, f.file_path, f.ci_file_status,
               -- DirectQuote
@@ -3579,7 +3590,7 @@ getDirectChatBefore_ db user@User {userId} contactId beforeChatItemId count sear
           [sql|
             SELECT
               -- ChatItem
-              i.chat_item_id, i.item_ts, i.item_content, i.item_text, i.item_status, i.shared_msg_id, i.item_deleted, i.item_edited, i.created_at, i.updated_at,
+              i.chat_item_id, i.item_ts, i.item_content, i.item_text, i.item_status, i.shared_msg_id, i.item_deleted, i.item_edited, i.created_at, i.updated_at, i.timed_ttl, i.timed_delete_at,
               -- CIFile
               f.file_id, f.file_name, f.file_size, f.file_path, f.ci_file_status,
               -- DirectQuote
@@ -3925,7 +3936,7 @@ getDirectChatItem db userId contactId itemId = ExceptT $ do
         [sql|
           SELECT
             -- ChatItem
-            i.chat_item_id, i.item_ts, i.item_content, i.item_text, i.item_status, i.shared_msg_id, i.item_deleted, i.item_edited, i.created_at, i.updated_at,
+            i.chat_item_id, i.item_ts, i.item_content, i.item_text, i.item_status, i.shared_msg_id, i.item_deleted, i.item_edited, i.created_at, i.updated_at, i.timed_ttl, i.timed_delete_at,
             -- CIFile
             f.file_id, f.file_name, f.file_size, f.file_path, f.ci_file_status,
             -- DirectQuote
@@ -4026,7 +4037,7 @@ getGroupChatItem db User {userId, userContactId} groupId itemId = ExceptT $ do
         [sql|
           SELECT
             -- ChatItem
-            i.chat_item_id, i.item_ts, i.item_content, i.item_text, i.item_status, i.shared_msg_id, i.item_deleted, i.item_edited, i.created_at, i.updated_at,
+            i.chat_item_id, i.item_ts, i.item_content, i.item_text, i.item_status, i.shared_msg_id, i.item_deleted, i.item_edited, i.created_at, i.updated_at, i.timed_ttl, i.timed_delete_at,
             -- CIFile
             f.file_id, f.file_name, f.file_size, f.file_path, f.ci_file_status,
             -- GroupMember
@@ -4153,8 +4164,8 @@ toChatItemRef = \case
   (itemId, Nothing, Just groupId) -> Right (itemId, ChatRef CTGroup groupId)
   (itemId, _, _) -> Left $ SEBadChatItem itemId
 
-updateDirectChatItemsRead :: DB.Connection -> Int64 -> Maybe (ChatItemId, ChatItemId) -> IO ()
-updateDirectChatItemsRead db contactId itemsRange_ = do
+updateDirectChatItemsRead :: DB.Connection -> UserId -> ContactId -> Maybe (ChatItemId, ChatItemId) -> IO ()
+updateDirectChatItemsRead db userId contactId itemsRange_ = do
   currentTs <- getCurrentTime
   case itemsRange_ of
     Just (fromItemId, toItemId) ->
@@ -4162,20 +4173,48 @@ updateDirectChatItemsRead db contactId itemsRange_ = do
         db
         [sql|
           UPDATE chat_items SET item_status = ?, updated_at = ?
-          WHERE contact_id = ? AND chat_item_id >= ? AND chat_item_id <= ? AND item_status = ?
+          WHERE user_id = ? AND contact_id = ? AND chat_item_id >= ? AND chat_item_id <= ? AND item_status = ?
         |]
-        (CISRcvRead, currentTs, contactId, fromItemId, toItemId, CISRcvNew)
+        (userId, CISRcvRead, currentTs, contactId, fromItemId, toItemId, CISRcvNew)
     _ ->
       DB.execute
         db
         [sql|
           UPDATE chat_items SET item_status = ?, updated_at = ?
-          WHERE contact_id = ? AND item_status = ?
+          WHERE user_id = ? AND contact_id = ? AND item_status = ?
         |]
-        (CISRcvRead, currentTs, contactId, CISRcvNew)
+        (userId, CISRcvRead, currentTs, contactId, CISRcvNew)
 
-updateGroupChatItemsRead :: DB.Connection -> Int64 -> Maybe (ChatItemId, ChatItemId) -> IO ()
-updateGroupChatItemsRead db groupId itemsRange_ = do
+getDirectUnreadTimedItems :: DB.Connection -> User -> ContactId -> Maybe (ChatItemId, ChatItemId) -> IO [(ChatItemId, Int)]
+getDirectUnreadTimedItems db User {userId} contactId itemsRange_ = case itemsRange_ of
+  Just (fromItemId, toItemId) ->
+    DB.query
+      db
+      [sql|
+        SELECT chat_item_id, timed_ttl
+        FROM chat_items
+        WHERE user_id = ? AND contact_id = ? AND chat_item_id >= ? AND chat_item_id <= ? AND item_status = ? AND timed_ttl IS NOT NULL AND timed_delete_at IS NULL
+      |]
+      (userId, contactId, fromItemId, toItemId, CISRcvNew)
+  _ ->
+    DB.query
+      db
+      [sql|
+        SELECT chat_item_id, timed_ttl
+        FROM chat_items
+        WHERE user_id = ? AND contact_id = ? AND item_status = ? AND timed_ttl IS NOT NULL AND timed_delete_at IS NULL
+      |]
+      (userId, contactId, CISRcvNew)
+
+setDirectChatItemDeleteAt :: DB.Connection -> User -> ContactId -> ChatItemId -> UTCTime -> IO ()
+setDirectChatItemDeleteAt db User {userId} contactId chatItemId deleteAt =
+  DB.execute
+    db
+    "UPDATE chat_items SET timed_delete_at = ? WHERE user_id = ? AND contact_id = ? AND chat_item_id = ?"
+    (deleteAt, userId, contactId, chatItemId)
+
+updateGroupChatItemsRead :: DB.Connection -> UserId -> GroupId -> Maybe (ChatItemId, ChatItemId) -> IO ()
+updateGroupChatItemsRead db userId groupId itemsRange_ = do
   currentTs <- getCurrentTime
   case itemsRange_ of
     Just (fromItemId, toItemId) ->
@@ -4183,17 +4222,45 @@ updateGroupChatItemsRead db groupId itemsRange_ = do
         db
         [sql|
           UPDATE chat_items SET item_status = ?, updated_at = ?
-          WHERE group_id = ? AND chat_item_id >= ? AND chat_item_id <= ? AND item_status = ?
+          WHERE user_id = ? AND group_id = ? AND chat_item_id >= ? AND chat_item_id <= ? AND item_status = ?
         |]
-        (CISRcvRead, currentTs, groupId, fromItemId, toItemId, CISRcvNew)
+        (userId, CISRcvRead, currentTs, groupId, fromItemId, toItemId, CISRcvNew)
     _ ->
       DB.execute
         db
         [sql|
           UPDATE chat_items SET item_status = ?, updated_at = ?
-          WHERE group_id = ? AND item_status = ?
+          WHERE user_id = ? AND group_id = ? AND item_status = ?
         |]
-        (CISRcvRead, currentTs, groupId, CISRcvNew)
+        (userId, CISRcvRead, currentTs, groupId, CISRcvNew)
+
+getGroupUnreadTimedItems :: DB.Connection -> User -> GroupId -> Maybe (ChatItemId, ChatItemId) -> IO [(ChatItemId, Int)]
+getGroupUnreadTimedItems db User {userId} groupId itemsRange_ = case itemsRange_ of
+  Just (fromItemId, toItemId) ->
+    DB.query
+      db
+      [sql|
+        SELECT chat_item_id, timed_ttl
+        FROM chat_items
+        WHERE user_id = ? AND group_id = ? AND chat_item_id >= ? AND chat_item_id <= ? AND item_status = ? AND timed_ttl IS NOT NULL AND timed_delete_at IS NULL
+      |]
+      (userId, groupId, fromItemId, toItemId, CISRcvNew)
+  _ ->
+    DB.query
+      db
+      [sql|
+        SELECT chat_item_id, timed_ttl
+        FROM chat_items
+        WHERE user_id = ? AND group_id = ? AND item_status = ? AND timed_ttl IS NOT NULL AND timed_delete_at IS NULL
+      |]
+      (userId, groupId, CISRcvNew)
+
+setGroupChatItemDeleteAt :: DB.Connection -> User -> GroupId -> ChatItemId -> UTCTime -> IO ()
+setGroupChatItemDeleteAt db User {userId} groupId chatItemId deleteAt =
+  DB.execute
+    db
+    "UPDATE chat_items SET timed_delete_at = ? WHERE user_id = ? AND group_id = ? AND chat_item_id = ?"
+    (deleteAt, userId, groupId, chatItemId)
 
 type ChatStatsRow = (Int, ChatItemId, Bool)
 
@@ -4202,9 +4269,9 @@ toChatStats (unreadCount, minUnreadItemId, unreadChat) = ChatStats {unreadCount,
 
 type MaybeCIFIleRow = (Maybe Int64, Maybe String, Maybe Integer, Maybe FilePath, Maybe ACIFileStatus)
 
-type ChatItemRow = (Int64, ChatItemTs, ACIContent, Text, ACIStatus, Maybe SharedMsgId, Bool, Maybe Bool, UTCTime, UTCTime) :. MaybeCIFIleRow
+type ChatItemRow = (Int64, ChatItemTs, ACIContent, Text, ACIStatus, Maybe SharedMsgId, Bool, Maybe Bool, UTCTime, UTCTime, Maybe Int, Maybe UTCTime) :. MaybeCIFIleRow
 
-type MaybeChatItemRow = (Maybe Int64, Maybe ChatItemTs, Maybe ACIContent, Maybe Text, Maybe ACIStatus, Maybe SharedMsgId, Maybe Bool, Maybe Bool, Maybe UTCTime, Maybe UTCTime) :. MaybeCIFIleRow
+type MaybeChatItemRow = (Maybe Int64, Maybe ChatItemTs, Maybe ACIContent, Maybe Text, Maybe ACIStatus, Maybe SharedMsgId, Maybe Bool, Maybe Bool, Maybe UTCTime, Maybe UTCTime, Maybe Int, Maybe UTCTime) :. MaybeCIFIleRow
 
 type QuoteRow = (Maybe ChatItemId, Maybe SharedMsgId, Maybe UTCTime, Maybe MsgContent, Maybe Bool)
 
@@ -4218,7 +4285,7 @@ toQuote (quotedItemId, quotedSharedMsgId, quotedSentAt, quotedMsgContent, _) dir
   CIQuote <$> dir <*> pure quotedItemId <*> pure quotedSharedMsgId <*> quotedSentAt <*> quotedMsgContent <*> (parseMaybeMarkdownList . msgContentText <$> quotedMsgContent)
 
 toDirectChatItem :: TimeZone -> UTCTime -> ChatItemRow :. QuoteRow -> Either StoreError (CChatItem 'CTDirect)
-toDirectChatItem tz currentTs (((itemId, itemTs, itemContent, itemText, itemStatus, sharedMsgId, itemDeleted, itemEdited, createdAt, updatedAt) :. (fileId_, fileName_, fileSize_, filePath, fileStatus_)) :. quoteRow) =
+toDirectChatItem tz currentTs (((itemId, itemTs, itemContent, itemText, itemStatus, sharedMsgId, itemDeleted, itemEdited, createdAt, updatedAt, timedTTL, timedDeleteAt) :. (fileId_, fileName_, fileSize_, filePath, fileStatus_)) :. quoteRow) =
   case (itemContent, itemStatus, fileStatus_) of
     (ACIContent SMDSnd ciContent, ACIStatus SMDSnd ciStatus, Just (AFS SMDSnd fileStatus)) ->
       Right $ cItem SMDSnd CIDirectSnd ciStatus ciContent (maybeCIFile fileStatus)
@@ -4240,11 +4307,16 @@ toDirectChatItem tz currentTs (((itemId, itemTs, itemContent, itemText, itemStat
       CChatItem d ChatItem {chatDir, meta = ciMeta content ciStatus, content, formattedText = parseMaybeMarkdownList itemText, quotedItem = toDirectQuote quoteRow, file}
     badItem = Left $ SEBadChatItem itemId
     ciMeta :: CIContent d -> CIStatus d -> CIMeta d
-    ciMeta content status = mkCIMeta itemId content itemText status sharedMsgId itemDeleted (fromMaybe False itemEdited) tz currentTs itemTs createdAt updatedAt
+    ciMeta content status = mkCIMeta itemId content itemText status sharedMsgId itemDeleted (fromMaybe False itemEdited) tz currentTs itemTs createdAt updatedAt ciTimed
+    ciTimed :: Maybe CITimed
+    ciTimed =
+      case (timedTTL, timedDeleteAt) of
+        (Just ttl, deleteAt) -> Just CITimed {ttl, deleteAt}
+        _ -> Nothing
 
 toDirectChatItemList :: TimeZone -> UTCTime -> MaybeChatItemRow :. QuoteRow -> [CChatItem 'CTDirect]
-toDirectChatItemList tz currentTs (((Just itemId, Just itemTs, Just itemContent, Just itemText, Just itemStatus, sharedMsgId, Just itemDeleted, itemEdited, Just createdAt, Just updatedAt) :. fileRow) :. quoteRow) =
-  either (const []) (: []) $ toDirectChatItem tz currentTs (((itemId, itemTs, itemContent, itemText, itemStatus, sharedMsgId, itemDeleted, itemEdited, createdAt, updatedAt) :. fileRow) :. quoteRow)
+toDirectChatItemList tz currentTs (((Just itemId, Just itemTs, Just itemContent, Just itemText, Just itemStatus, sharedMsgId, Just itemDeleted, itemEdited, Just createdAt, Just updatedAt, timedTTL, timedDeleteAt) :. fileRow) :. quoteRow) =
+  either (const []) (: []) $ toDirectChatItem tz currentTs (((itemId, itemTs, itemContent, itemText, itemStatus, sharedMsgId, itemDeleted, itemEdited, createdAt, updatedAt, timedTTL, timedDeleteAt) :. fileRow) :. quoteRow)
 toDirectChatItemList _ _ _ = []
 
 type GroupQuoteRow = QuoteRow :. MaybeGroupMemberRow
@@ -4260,7 +4332,7 @@ toGroupQuote qr@(_, _, _, _, quotedSent) quotedMember_ = toQuote qr $ direction
     direction _ _ = Nothing
 
 toGroupChatItem :: TimeZone -> UTCTime -> Int64 -> ChatItemRow :. MaybeGroupMemberRow :. GroupQuoteRow -> Either StoreError (CChatItem 'CTGroup)
-toGroupChatItem tz currentTs userContactId (((itemId, itemTs, itemContent, itemText, itemStatus, sharedMsgId, itemDeleted, itemEdited, createdAt, updatedAt) :. (fileId_, fileName_, fileSize_, filePath, fileStatus_)) :. memberRow_ :. quoteRow :. quotedMemberRow_) = do
+toGroupChatItem tz currentTs userContactId (((itemId, itemTs, itemContent, itemText, itemStatus, sharedMsgId, itemDeleted, itemEdited, createdAt, updatedAt, timedTTL, timedDeleteAt) :. (fileId_, fileName_, fileSize_, filePath, fileStatus_)) :. memberRow_ :. quoteRow :. quotedMemberRow_) = do
   let member_ = toMaybeGroupMember userContactId memberRow_
   let quotedMember_ = toMaybeGroupMember userContactId quotedMemberRow_
   case (itemContent, itemStatus, member_, fileStatus_) of
@@ -4284,11 +4356,16 @@ toGroupChatItem tz currentTs userContactId (((itemId, itemTs, itemContent, itemT
       CChatItem d ChatItem {chatDir, meta = ciMeta content ciStatus, content, formattedText = parseMaybeMarkdownList itemText, quotedItem = toGroupQuote quoteRow quotedMember_, file}
     badItem = Left $ SEBadChatItem itemId
     ciMeta :: CIContent d -> CIStatus d -> CIMeta d
-    ciMeta content status = mkCIMeta itemId content itemText status sharedMsgId itemDeleted (fromMaybe False itemEdited) tz currentTs itemTs createdAt updatedAt
+    ciMeta content status = mkCIMeta itemId content itemText status sharedMsgId itemDeleted (fromMaybe False itemEdited) tz currentTs itemTs createdAt updatedAt ciTimed
+    ciTimed :: Maybe CITimed
+    ciTimed =
+      case (timedTTL, timedDeleteAt) of
+        (Just ttl, deleteAt) -> Just CITimed {ttl, deleteAt}
+        _ -> Nothing
 
 toGroupChatItemList :: TimeZone -> UTCTime -> Int64 -> MaybeGroupChatItemRow -> [CChatItem 'CTGroup]
-toGroupChatItemList tz currentTs userContactId (((Just itemId, Just itemTs, Just itemContent, Just itemText, Just itemStatus, sharedMsgId, Just itemDeleted, itemEdited, Just createdAt, Just updatedAt) :. fileRow) :. memberRow_ :. quoteRow :. quotedMemberRow_) =
-  either (const []) (: []) $ toGroupChatItem tz currentTs userContactId (((itemId, itemTs, itemContent, itemText, itemStatus, sharedMsgId, itemDeleted, itemEdited, createdAt, updatedAt) :. fileRow) :. memberRow_ :. quoteRow :. quotedMemberRow_)
+toGroupChatItemList tz currentTs userContactId (((Just itemId, Just itemTs, Just itemContent, Just itemText, Just itemStatus, sharedMsgId, Just itemDeleted, itemEdited, Just createdAt, Just updatedAt, timedTTL, timedDeleteAt) :. fileRow) :. memberRow_ :. quoteRow :. quotedMemberRow_) =
+  either (const []) (: []) $ toGroupChatItem tz currentTs userContactId (((itemId, itemTs, itemContent, itemText, itemStatus, sharedMsgId, itemDeleted, itemEdited, createdAt, updatedAt, timedTTL, timedDeleteAt) :. fileRow) :. memberRow_ :. quoteRow :. quotedMemberRow_)
 toGroupChatItemList _ _ _ _ = []
 
 getSMPServers :: DB.Connection -> User -> IO [ServerCfg]
@@ -4485,6 +4562,24 @@ getXGrpMemIntroContGroup db User {userId} GroupMember {groupMemberId} = do
       Just connReq -> Just (hostConnId, connReq)
       _ -> Nothing
 
+getTimedItems :: DB.Connection -> User -> UTCTime -> IO [((ChatRef, ChatItemId), UTCTime)]
+getTimedItems db User {userId} startTimedThreadCutoff =
+  catMaybes . map toCIRefDeleteAt
+    <$> DB.query
+      db
+      [sql|
+        SELECT chat_item_id, contact_id, group_id, timed_delete_at
+        FROM chat_items
+        WHERE user_id = ? AND timed_delete_at IS NOT NULL AND timed_delete_at <= ?
+      |]
+      (userId, startTimedThreadCutoff)
+  where
+    toCIRefDeleteAt :: (ChatItemId, Maybe ContactId, Maybe GroupId, UTCTime) -> Maybe ((ChatRef, ChatItemId), UTCTime)
+    toCIRefDeleteAt = \case
+      (itemId, Just contactId, Nothing, deleteAt) -> Just ((ChatRef CTDirect contactId, itemId), deleteAt)
+      (itemId, Nothing, Just groupId, deleteAt) -> Just ((ChatRef CTGroup groupId, itemId), deleteAt)
+      _ -> Nothing
+
 getChatItemTTL :: DB.Connection -> User -> IO (Maybe Int64)
 getChatItemTTL db User {userId} =
   fmap join . maybeFirstRow fromOnly $ DB.query db "SELECT chat_item_ttl FROM settings WHERE user_id = ? LIMIT 1" (Only userId)

src/Simplex/Chat/Terminal/Input.hs

@@ -35,7 +35,7 @@ runInputLoop ct cc = forever $ do
   s <- atomically . readTBQueue $ inputQ cc
   let bs = encodeUtf8 $ T.pack s
       cmd = parseChatCommand bs
-  unless (isMessage cmd) $ echo s
+  when (doEcho cmd) $ echo s
   r <- runReaderT (execChatCommand bs) cc
   case r of
     CRChatCmdError _ -> when (isMessage cmd) $ echo s
@@ -46,6 +46,9 @@ runInputLoop ct cc = forever $ do
   printToTerminal ct $ responseToView user testV ts r
   where
     echo s = printToTerminal ct [plain s]
+    doEcho cmd = case cmd of
+      Right APIChatRead {} -> False
+      _ -> not $ isMessage cmd
     isMessage = \case
       Right SendMessage {} -> True
       Right SendFile {} -> True

src/Simplex/Chat/Terminal/Output.hs

@@ -12,6 +12,7 @@ import Control.Monad.IO.Unlift
 import Control.Monad.Reader
 import Data.Time.Clock (getCurrentTime)
 import Simplex.Chat.Controller
+import Simplex.Chat.Messages hiding (NewChatItem (..))
 import Simplex.Chat.Styled
 import Simplex.Chat.View
 import System.Console.ANSI.Types
@@ -74,13 +75,26 @@ withTermLock ChatTerminal {termLock} action = do
   atomically $ putTMVar termLock ()
 
 runTerminalOutput :: ChatTerminal -> ChatController -> IO ()
-runTerminalOutput ct cc = do
-  let testV = testView $ config cc
+runTerminalOutput ct ChatController {currentUser, inputQ, outputQ, config = ChatConfig {testView}} = do
   forever $ do
-    (_, r) <- atomically . readTBQueue $ outputQ cc
-    user <- readTVarIO $ currentUser cc
+    (_, r) <- atomically $ readTBQueue outputQ
+    case r of
+      CRNewChatItem ci -> markChatItemRead ci
+      CRChatItemUpdated ci -> markChatItemRead ci
+      _ -> pure ()
+    user <- readTVarIO currentUser
     ts <- getCurrentTime
-    printToTerminal ct $ responseToView user testV ts r
+    printToTerminal ct $ responseToView user testView ts r
+  where
+    markChatItemRead :: AChatItem -> IO ()
+    markChatItemRead (AChatItem _ _ chat item@ChatItem {meta = CIMeta {itemStatus}}) =
+      case (muted chat item, itemStatus) of
+        (False, CISRcvNew) -> do
+          let itemId = chatItemId' item
+              chatRef = serializeChatRef $ chatInfoToRef chat
+              cmd = "/_read chat " <> chatRef <> " from=" <> show itemId <> " to=" <> show itemId
+          atomically $ writeTBQueue inputQ cmd
+        _ -> pure ()
 
 printToTerminal :: ChatTerminal -> [StyledString] -> IO ()
 printToTerminal ct s =

src/Simplex/Chat/Util.hs

@@ -0,0 +1,17 @@
+module Simplex.Chat.Util
+  ( diffInMicros,
+  )
+where
+
+import Data.Fixed (Fixed (MkFixed), Pico)
+import Data.Time (nominalDiffTimeToSeconds)
+import Data.Time.Clock (UTCTime, diffUTCTime)
+
+diffInMicros :: UTCTime -> UTCTime -> Int
+diffInMicros a b = (`div` 1000000) $ diffInPicos a b
+
+diffInPicos :: UTCTime -> UTCTime -> Int
+diffInPicos a b = fromInteger . fromPico . nominalDiffTimeToSeconds $ diffUTCTime a b
+
+fromPico :: Pico -> Integer
+fromPico (MkFixed i) = i

src/Simplex/Chat/View.hs

@@ -82,8 +82,9 @@ responseToView user_ testView ts = \case
   CRLastMessages chatItems -> concatMap (\(AChatItem _ _ chat item) -> viewChatItem chat item True ts) chatItems
   CRChatItemStatusUpdated _ -> []
   CRChatItemUpdated (AChatItem _ _ chat item) -> unmuted chat item $ viewItemUpdate chat item ts
-  CRChatItemDeleted (AChatItem _ _ chat deletedItem) toItem byUser -> unmuted chat deletedItem $ viewItemDelete chat deletedItem (isJust toItem) byUser ts
+  CRChatItemDeleted (AChatItem _ _ chat deletedItem) toItem byUser timed -> unmuted chat deletedItem $ viewItemDelete chat deletedItem (isJust toItem) byUser timed ts
   CRChatItemDeletedNotFound Contact {localDisplayName = c} _ -> [ttyFrom $ c <> "> [deleted - original message not found]"]
+  CRChatRead -> []
   CRBroadcastSent mc n t -> viewSentBroadcast mc n ts t
   CRMsgIntegrityError mErr -> viewMsgIntegrityError mErr
   CRCmdAccepted _ -> []
@@ -251,10 +252,16 @@ responseToView user_ testView ts = \case
     contactList :: [ContactRef] -> String
     contactList cs = T.unpack . T.intercalate ", " $ map (\ContactRef {localDisplayName = n} -> "@" <> n) cs
     unmuted :: ChatInfo c -> ChatItem c d -> [StyledString] -> [StyledString]
-    unmuted chat ChatItem {chatDir} s = case (chat, chatDir) of
-      (DirectChat Contact {chatSettings = DisableNtfs}, CIDirectRcv) -> []
-      (GroupChat GroupInfo {chatSettings = DisableNtfs}, CIGroupRcv _) -> []
-      _ -> s
+    unmuted chat chatItem s =
+      if muted chat chatItem
+        then []
+        else s
+
+muted :: ChatInfo c -> ChatItem c d -> Bool
+muted chat ChatItem {chatDir} = case (chat, chatDir) of
+  (DirectChat Contact {chatSettings = DisableNtfs}, CIDirectRcv) -> True
+  (GroupChat GroupInfo {chatSettings = DisableNtfs}, CIGroupRcv _) -> True
+  _ -> False
 
 viewGroupSubscribed :: GroupInfo -> [StyledString]
 viewGroupSubscribed g@GroupInfo {membership} =
@@ -343,8 +350,9 @@ viewItemUpdate chat ChatItem {chatDir, meta, content, quotedItem} ts = case chat
     CIGroupSnd -> ["message updated"]
   _ -> []
 
-viewItemDelete :: ChatInfo c -> ChatItem c d -> Bool -> Bool -> CurrentTime -> [StyledString]
-viewItemDelete chat ChatItem {chatDir, meta, content = deletedContent} markedDeleted byUser ts
+viewItemDelete :: ChatInfo c -> ChatItem c d -> Bool -> Bool -> Bool -> CurrentTime -> [StyledString]
+viewItemDelete chat ChatItem {chatDir, meta, content = deletedContent} markedDeleted byUser timed ts
+  | timed = []
   | byUser = if markedDeleted then ["message marked deleted"] else ["message deleted"]
   | otherwise = case chat of
     DirectChat Contact {localDisplayName = c} -> case (chatDir, deletedContent) of
@@ -421,9 +429,9 @@ viewContactsList :: [Contact] -> [StyledString]
 viewContactsList =
   let ldn = T.toLower . (localDisplayName :: Contact -> ContactName)
       incognito ct = if contactConnIncognito ct then incognitoPrefix else ""
-   in map (\ct -> incognito ct <> ttyFullContact ct <> muted ct <> alias ct) . sortOn ldn
+   in map (\ct -> incognito ct <> ttyFullContact ct <> muted' ct <> alias ct) . sortOn ldn
   where
-    muted Contact {chatSettings, localDisplayName = ldn}
+    muted' Contact {chatSettings, localDisplayName = ldn}
       | enableNtfs chatSettings = ""
       | otherwise = " (muted, you can " <> highlight ("/unmute @" <> ldn) <> ")"
     alias Contact {profile = LocalProfile {localAlias}}
@@ -1142,6 +1150,7 @@ viewChatError = \case
     CEAgentNoSubResult connId -> ["no subscription result for connection: " <> sShow connId]
     CECommandError e -> ["bad chat command: " <> plain e]
     CEAgentCommandError e -> ["agent command error: " <> plain e]
+    CEInternalError e -> ["internal chat error: " <> plain e]
   -- e -> ["chat error: " <> sShow e]
   ChatErrorStore err -> case err of
     SEDuplicateName -> ["this display name is already used by user, contact or group"]

tests/ChatTests.hs

@@ -305,11 +305,6 @@ testAddContact = versionTestMatrix2 runTestAddContact
       alice #$> ("/_get chat @2 before=" <> itemId 2 <> " count=100", chat, chatFeatures <> [(1, "hello there 🙂")])
       -- search
       alice #$> ("/_get chat @2 count=100 search=ello ther", chat, [(1, "hello there 🙂"), (0, "hello there")])
-      -- read messages
-      alice #$> ("/_read chat @2 from=1 to=100", id, "ok")
-      bob #$> ("/_read chat @2 from=1 to=100", id, "ok")
-      alice #$> ("/_read chat @2", id, "ok")
-      bob #$> ("/_read chat @2", id, "ok")
 
 testDeleteContactDeletesProfile :: IO ()
 testDeleteContactDeletesProfile =
@@ -615,12 +610,6 @@ testGroupShared alice bob cath checkMessages = do
       bob #$> ("/_get chat #1 count=100", chat, groupFeatures <> [(0, "connected"), (0, "added cath (Catherine)"), (0, "connected"), (0, "hello"), (1, "hi there"), (0, "hey team")])
       cath @@@ [("@bob", "hey"), ("#team", "hey team"), ("@alice", "received invitation to join group team as admin")]
       cath #$> ("/_get chat #1 count=100", chat, groupFeatures <> [(0, "connected"), (0, "connected"), (0, "hello"), (0, "hi there"), (1, "hey team")])
-      alice #$> ("/_read chat #1 from=1 to=100", id, "ok")
-      bob #$> ("/_read chat #1 from=1 to=100", id, "ok")
-      cath #$> ("/_read chat #1 from=1 to=100", id, "ok")
-      alice #$> ("/_read chat #1", id, "ok")
-      bob #$> ("/_read chat #1", id, "ok")
-      cath #$> ("/_read chat #1", id, "ok")
       alice #$> ("/_unread chat #1 on", id, "ok")
       alice #$> ("/_unread chat #1 off", id, "ok")
 

tests/ProtocolTests.hs

@@ -101,7 +101,7 @@ decodeChatMessageTest :: Spec
 decodeChatMessageTest = describe "Chat message encoding/decoding" $ do
   it "x.msg.new simple text" $
     "{\"event\":\"x.msg.new\",\"params\":{\"content\":{\"text\":\"hello\",\"type\":\"text\"}}}"
-      #==# XMsgNew (MCSimple (extMsgContent (MCText "hello") Nothing))
+      #==# XMsgNew (MCSimple (extMsgContent (MCText "hello") Nothing Nothing))
   it "x.msg.new simple text - timed message TTL" $
     "{\"event\":\"x.msg.new\",\"params\":{\"content\":{\"text\":\"hello\",\"type\":\"text\"},\"ttl\":3600}}"
       #==# XMsgNew (MCSimple (ExtMsgContent (MCText "hello") Nothing (Just 3600) Nothing))
@@ -110,21 +110,21 @@ decodeChatMessageTest = describe "Chat message encoding/decoding" $ do
       #==# XMsgNew (MCSimple (ExtMsgContent (MCText "hello") Nothing Nothing (Just True)))
   it "x.msg.new simple link" $
     "{\"event\":\"x.msg.new\",\"params\":{\"content\":{\"text\":\"https://simplex.chat\",\"type\":\"link\",\"preview\":{\"description\":\"SimpleX Chat\",\"image\":\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgA\",\"title\":\"SimpleX Chat\",\"uri\":\"https://simplex.chat\"}}}}"
-      #==# XMsgNew (MCSimple (extMsgContent (MCLink "https://simplex.chat" $ LinkPreview {uri = "https://simplex.chat", title = "SimpleX Chat", description = "SimpleX Chat", image = ImageData "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgA"}) Nothing))
+      #==# XMsgNew (MCSimple (extMsgContent (MCLink "https://simplex.chat" $ LinkPreview {uri = "https://simplex.chat", title = "SimpleX Chat", description = "SimpleX Chat", image = ImageData "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgA"}) Nothing Nothing))
   it "x.msg.new simple image" $
     "{\"event\":\"x.msg.new\",\"params\":{\"content\":{\"text\":\"\",\"type\":\"image\",\"image\":\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAIAQMAAAD+wSzIAAAABlBMVEX///+/v7+jQ3Y5AAAADklEQVQI12P4AIX8EAgALgAD/aNpbtEAAAAASUVORK5CYII=\"}}}"
-      #==# XMsgNew (MCSimple (extMsgContent (MCImage "" $ ImageData "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAIAQMAAAD+wSzIAAAABlBMVEX///+/v7+jQ3Y5AAAADklEQVQI12P4AIX8EAgALgAD/aNpbtEAAAAASUVORK5CYII=") Nothing))
+      #==# XMsgNew (MCSimple (extMsgContent (MCImage "" $ ImageData "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAIAQMAAAD+wSzIAAAABlBMVEX///+/v7+jQ3Y5AAAADklEQVQI12P4AIX8EAgALgAD/aNpbtEAAAAASUVORK5CYII=") Nothing Nothing))
   it "x.msg.new simple image with text" $
     "{\"event\":\"x.msg.new\",\"params\":{\"content\":{\"text\":\"here's an image\",\"type\":\"image\",\"image\":\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAIAQMAAAD+wSzIAAAABlBMVEX///+/v7+jQ3Y5AAAADklEQVQI12P4AIX8EAgALgAD/aNpbtEAAAAASUVORK5CYII=\"}}}"
-      #==# XMsgNew (MCSimple (extMsgContent (MCImage "here's an image" $ ImageData "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAIAQMAAAD+wSzIAAAABlBMVEX///+/v7+jQ3Y5AAAADklEQVQI12P4AIX8EAgALgAD/aNpbtEAAAAASUVORK5CYII=") Nothing))
+      #==# XMsgNew (MCSimple (extMsgContent (MCImage "here's an image" $ ImageData "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAIAQMAAAD+wSzIAAAABlBMVEX///+/v7+jQ3Y5AAAADklEQVQI12P4AIX8EAgALgAD/aNpbtEAAAAASUVORK5CYII=") Nothing Nothing))
   it "x.msg.new chat message " $
     "{\"msgId\":\"AQIDBA==\",\"event\":\"x.msg.new\",\"params\":{\"content\":{\"text\":\"hello\",\"type\":\"text\"}}}"
-      ##==## ChatMessage (Just $ SharedMsgId "\1\2\3\4") (XMsgNew (MCSimple (extMsgContent (MCText "hello") Nothing)))
+      ##==## ChatMessage (Just $ SharedMsgId "\1\2\3\4") (XMsgNew (MCSimple (extMsgContent (MCText "hello") Nothing Nothing)))
   it "x.msg.new quote" $
     "{\"msgId\":\"AQIDBA==\",\"event\":\"x.msg.new\",\"params\":{\"content\":{\"text\":\"hello to you too\",\"type\":\"text\"},\"quote\":{\"content\":{\"text\":\"hello there!\",\"type\":\"text\"},\"msgRef\":{\"msgId\":\"BQYHCA==\",\"sent\":true,\"sentAt\":\"1970-01-01T00:00:01.000000001Z\"}}}}"
       ##==## ChatMessage
         (Just $ SharedMsgId "\1\2\3\4")
-        (XMsgNew (MCQuote quotedMsg (extMsgContent (MCText "hello to you too") Nothing)))
+        (XMsgNew (MCQuote quotedMsg (extMsgContent (MCText "hello to you too") Nothing Nothing)))
   it "x.msg.new quote - timed message TTL" $
     "{\"msgId\":\"AQIDBA==\",\"event\":\"x.msg.new\",\"params\":{\"content\":{\"text\":\"hello to you too\",\"type\":\"text\"},\"quote\":{\"content\":{\"text\":\"hello there!\",\"type\":\"text\"},\"msgRef\":{\"msgId\":\"BQYHCA==\",\"sent\":true,\"sentAt\":\"1970-01-01T00:00:01.000000001Z\"}},\"ttl\":3600}}"
       ##==## ChatMessage
@@ -137,7 +137,7 @@ decodeChatMessageTest = describe "Chat message encoding/decoding" $ do
         (XMsgNew (MCQuote quotedMsg (ExtMsgContent (MCText "hello to you too") Nothing Nothing (Just True))))
   it "x.msg.new forward" $
     "{\"msgId\":\"AQIDBA==\",\"event\":\"x.msg.new\",\"params\":{\"content\":{\"text\":\"hello\",\"type\":\"text\"},\"forward\":true}}"
-      ##==## ChatMessage (Just $ SharedMsgId "\1\2\3\4") (XMsgNew $ MCForward (extMsgContent (MCText "hello") Nothing))
+      ##==## ChatMessage (Just $ SharedMsgId "\1\2\3\4") (XMsgNew $ MCForward (extMsgContent (MCText "hello") Nothing Nothing))
   it "x.msg.new forward - timed message TTL" $
     "{\"msgId\":\"AQIDBA==\",\"event\":\"x.msg.new\",\"params\":{\"content\":{\"text\":\"hello\",\"type\":\"text\"},\"forward\":true,\"ttl\":3600}}"
       ##==## ChatMessage (Just $ SharedMsgId "\1\2\3\4") (XMsgNew $ MCForward (ExtMsgContent (MCText "hello") Nothing (Just 3600) Nothing))
@@ -146,10 +146,10 @@ decodeChatMessageTest = describe "Chat message encoding/decoding" $ do
       ##==## ChatMessage (Just $ SharedMsgId "\1\2\3\4") (XMsgNew $ MCForward (ExtMsgContent (MCText "hello") Nothing Nothing (Just True)))
   it "x.msg.new simple text with file" $
     "{\"event\":\"x.msg.new\",\"params\":{\"content\":{\"text\":\"hello\",\"type\":\"text\"},\"file\":{\"fileSize\":12345,\"fileName\":\"photo.jpg\"}}}"
-      #==# XMsgNew (MCSimple (extMsgContent (MCText "hello") (Just FileInvitation {fileName = "photo.jpg", fileSize = 12345, fileConnReq = Nothing, fileInline = Nothing})))
+      #==# XMsgNew (MCSimple (extMsgContent (MCText "hello") (Just FileInvitation {fileName = "photo.jpg", fileSize = 12345, fileConnReq = Nothing, fileInline = Nothing}) Nothing))
   it "x.msg.new simple file with file" $
     "{\"event\":\"x.msg.new\",\"params\":{\"content\":{\"text\":\"\",\"type\":\"file\"},\"file\":{\"fileSize\":12345,\"fileName\":\"file.txt\"}}}"
-      #==# XMsgNew (MCSimple (extMsgContent (MCFile "") (Just FileInvitation {fileName = "file.txt", fileSize = 12345, fileConnReq = Nothing, fileInline = Nothing})))
+      #==# XMsgNew (MCSimple (extMsgContent (MCFile "") (Just FileInvitation {fileName = "file.txt", fileSize = 12345, fileConnReq = Nothing, fileInline = Nothing}) Nothing))
   it "x.msg.new quote with file" $
     "{\"msgId\":\"AQIDBA==\",\"event\":\"x.msg.new\",\"params\":{\"content\":{\"text\":\"hello to you too\",\"type\":\"text\"},\"quote\":{\"content\":{\"text\":\"hello there!\",\"type\":\"text\"},\"msgRef\":{\"msgId\":\"BQYHCA==\",\"sent\":true,\"sentAt\":\"1970-01-01T00:00:01.000000001Z\"}},\"file\":{\"fileSize\":12345,\"fileName\":\"photo.jpg\"}}}"
       ##==## ChatMessage
@@ -160,12 +160,13 @@ decodeChatMessageTest = describe "Chat message encoding/decoding" $ do
                 ( extMsgContent
                     (MCText "hello to you too")
                     (Just FileInvitation {fileName = "photo.jpg", fileSize = 12345, fileConnReq = Nothing, fileInline = Nothing})
+                    Nothing
                 )
             )
         )
   it "x.msg.new forward with file" $
     "{\"msgId\":\"AQIDBA==\",\"event\":\"x.msg.new\",\"params\":{\"content\":{\"text\":\"hello\",\"type\":\"text\"},\"forward\":true,\"file\":{\"fileSize\":12345,\"fileName\":\"photo.jpg\"}}}"
-      ##==## ChatMessage (Just $ SharedMsgId "\1\2\3\4") (XMsgNew $ MCForward (extMsgContent (MCText "hello") (Just FileInvitation {fileName = "photo.jpg", fileSize = 12345, fileConnReq = Nothing, fileInline = Nothing})))
+      ##==## ChatMessage (Just $ SharedMsgId "\1\2\3\4") (XMsgNew $ MCForward (extMsgContent (MCText "hello") (Just FileInvitation {fileName = "photo.jpg", fileSize = 12345, fileConnReq = Nothing, fileInline = Nothing}) Nothing))
   it "x.msg.update" $
     "{\"event\":\"x.msg.update\",\"params\":{\"msgId\":\"AQIDBA==\", \"content\":{\"text\":\"hello\",\"type\":\"text\"}}}"
       #==# XMsgUpdate (SharedMsgId "\1\2\3\4") (MCText "hello") Nothing