From 303274acb644971b65a23b4cf3f8b33f36c7ffc9 Mon Sep 17 00:00:00 2001
From: Sumner Evans <sumner.evans@automattic.com>
Date: Wed, 6 Nov 2024 03:07:36 -0700
Subject: [PATCH] connector/matrix: send UNSUPPORTED MSS for invalid reactions

Signed-off-by: Sumner Evans <sumner.evans@automattic.com>
---
 pkg/connector/matrix.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pkg/connector/matrix.go b/pkg/connector/matrix.go
index 75ee4a63..3916ed30 100644
--- a/pkg/connector/matrix.go
+++ b/pkg/connector/matrix.go
@@ -428,6 +428,12 @@ func (t *TelegramClient) HandleMatrixReaction(ctx context.Context, msg *bridgev2
 		MsgID:       targetMessageID,
 		Reaction:    newReactions,
 	})
+	if tg.IsReactionInvalid(err) {
+		return nil, bridgev2.WrapErrorInStatus(err).
+			WithErrorReason(event.MessageStatusUnsupported).
+			WithIsCertain(true).
+			WithMessage("Unsupported reaction")
+	}
 	return &database.Reaction{}, err
 }