From 29bd79728d120c66e045b3cca4f113ea83ba3a22 Mon Sep 17 00:00:00 2001
From: Erik Johnston <erik@matrix.org>
Date: Mon, 19 Aug 2024 18:14:36 +0100
Subject: [PATCH] Handle both cases

---
 synapse/handlers/sliding_sync.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/synapse/handlers/sliding_sync.py b/synapse/handlers/sliding_sync.py
index 30aec4cf18..a1412d20f4 100644
--- a/synapse/handlers/sliding_sync.py
+++ b/synapse/handlers/sliding_sync.py
@@ -161,6 +161,12 @@ def get_rooms(from_token: SlidingSyncStreamToken) -> None:
             ORDER BY COALESCE(j.event_stream_ordering, s.stream_ordering) DESC
         """
 
+        if from_token:
+            # Calculate what has changed.
+            ...
+        else:
+            ...
+
     # TODO: Handle the event_stream_ordering returned being above the `to_token`.
 
     # We can now sort and cap the rooms, noting if there have been changes