From c1d559d31fdf87bc833c7d4795a88e6fcfeb61c8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Roman=20Smr=C5=BE?= <roman.smrz@seznam.cz>
Date: Wed, 11 Mar 2026 22:29:52 +0100
Subject: Fix updated dm threads check on initial state

---
 src/Erebos/DirectMessage.hs |  4 ++--
 test/message.et             | 35 +++++++++++++++++++++++++++++++++++
 2 files changed, 37 insertions(+), 2 deletions(-)

diff --git a/src/Erebos/DirectMessage.hs b/src/Erebos/DirectMessage.hs
index 0b0665c..dafebce 100644
--- a/src/Erebos/DirectMessage.hs
+++ b/src/Erebos/DirectMessage.hs
@@ -306,9 +306,9 @@ findMissingPeers :: Server -> DirectMessageThreads -> ExceptT ErebosError IO ()
 findMissingPeers server (DirectMessageThreads states threads) = do
     prev <- modifyServiceGlobalState server (Proxy @DirectMessage) $ \gs ->
         ( gs { dmgsLastState = Just states }, dmgsLastState gs )
-    let diffPeers = map (msPeer . fromStored) $ maybe states (storedDifference states) prev
+    let diffPeers = map (msPeer . fromStored) . storedDifference states <$> prev
 
-    forM_ (takeWhile (\t -> any (sameIdentity $ msgPeer t) diffPeers) threads) $ \thread -> do
+    forM_ (takeWhile (\t -> maybe True (any (sameIdentity $ msgPeer t)) diffPeers) threads) $ \thread -> do
         when (msgHead thread /= msgReceived thread) $ do
             mapM_ (discoverySearch server) $ map (refDigest . storedRef) $ idDataF $ msgPeer thread
 
diff --git a/test/message.et b/test/message.et
index c4b61e3..3609da5 100644
--- a/test/message.et
+++ b/test/message.et
@@ -267,6 +267,41 @@ test DirectMessageDiscovery:
 	# Verify the first message
 	expect /dm-received from Owner1 new yes text hello_to_p4/ from p4
 
+	# Prepare unsent messages, followed by a delivered one:
+	for p in [ p3, p4 ]:
+		send "stop-server" to p
+		expect /stop-server-done/ from p
+
+	send "dm-send-identity $p4_owner msg1_to_p4" to p1
+	send "dm-send-identity $p3_owner msg_to_p3" to p1
+	send "dm-send-identity $p4_owner msg2_to_p4" to p1
+	send "dm-send-identity $p2_owner msg_to_p2" to p1
+	expect /dm-received from Owner1 new yes text msg_to_p2/ from p2
+
+	# Restart servers to remove peers:
+	for p in [ p1, p2, pd ]:
+		with p:
+			send "stop-server"
+	for p in [ p1, p2, pd ]:
+		with p:
+			expect /stop-server-done/
+	for p in [ p1, p2, p3, p4, pd ]:
+		with p:
+			send "start-server services $services"
+	for p in [ p2, p3, p4, p1 ]:
+		with p:
+			send "peer-add ${pd.node.ip}"
+			expect:
+				/peer 1 addr ${pd.node.ip} 29665/
+				/peer 1 id Discovery/
+		expect from pd:
+			/peer [0-9]+ addr ${p.node.ip} 29665/
+			/peer [0-9]+ id Device. Owner./
+
+	expect /dm-received from Owner1 new yes text msg1_to_p4/ from p4
+	expect /dm-received from Owner1 new yes text msg2_to_p4/ from p4
+	expect /dm-received from Owner1 new yes text msg_to_p3/ from p3
+
 	for p in [ p1, p2, p3, p4, pd ]:
 		send "stop-server" to p
 	for p in [ p1, p2, p3, p4, pd ]:
-- 
cgit v1.2.3