From 4ebf11e3ba7ee3e8d2761879053650c76718fcfd Mon Sep 17 00:00:00 2001
From: David Florness <david@florness.com>
Date: Sun, 30 May 2021 16:02:51 -0400
Subject: [PATCH] echo: create filter limited to room when room ID is provided

---
 echo/cmd.go | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/echo/cmd.go b/echo/cmd.go
index e74ab4e..a408aa8 100644
--- a/echo/cmd.go
+++ b/echo/cmd.go
@@ -55,5 +55,23 @@ func echo(roomID *id.RoomID) error {
 			source)
 	})
 
+	if roomID != nil {
+		// same as
+		// https://github.com/tulir/mautrix-go/blob/v0.9.12/sync.go#L233
+		// but filtered to room
+		res, err := client.CreateFilter(&mautrix.Filter{
+			Room: mautrix.RoomFilter{
+				Timeline: mautrix.FilterPart{
+					Limit: 50,
+					Rooms: []id.RoomID{*roomID},
+				},
+			},
+		})
+		if err != nil {
+			return err
+		}
+		client.Store.SaveFilterID(client.UserID, res.FilterID)
+	}
+
 	return client.Sync()
 }
-- 
2.38.4