From dd5cb220a0664682efd82c718efebe40e15c4337 Mon Sep 17 00:00:00 2001
From: Benjamin Bouvier <benjamin@bouvier.cc>
Date: Tue, 3 Mar 2026 15:09:47 +0100
Subject: [PATCH] refactor(event cache): add `first_chunk_as_gap()` in
 `EventLinkedChunk` too

---
 .../matrix-sdk/src/event_cache/room/event_focused.rs  | 10 +---------
 crates/matrix-sdk/src/event_cache/room/events.rs      | 11 +++++++++++
 2 files changed, 12 insertions(+), 9 deletions(-)

diff --git a/crates/matrix-sdk/src/event_cache/room/event_focused.rs b/crates/matrix-sdk/src/event_cache/room/event_focused.rs
index 9c6d21336..e2d0beaa2 100644
--- a/crates/matrix-sdk/src/event_cache/room/event_focused.rs
+++ b/crates/matrix-sdk/src/event_cache/room/event_focused.rs
@@ -277,16 +277,8 @@ impl EventFocusedCacheInner {
     }
 
     /// Return the first chunk as a gap, if it's one.
-    ///
-    /// This stores the backward pagination token, in this case.
     fn first_chunk_as_gap(&self) -> Option<(ChunkIdentifier, Gap)> {
-        self.chunk.chunks().next().and_then(|chunk| {
-            if let ChunkContent::Gap(gap) = chunk.content() {
-                Some((chunk.identifier(), gap.clone()))
-            } else {
-                None
-            }
-        })
+        self.chunk.first_chunk_as_gap()
     }
 
     /// Return the last chunk as a gap, if it's one.
diff --git a/crates/matrix-sdk/src/event_cache/room/events.rs b/crates/matrix-sdk/src/event_cache/room/events.rs
index d50dc7431..0cffeffdd 100644
--- a/crates/matrix-sdk/src/event_cache/room/events.rs
+++ b/crates/matrix-sdk/src/event_cache/room/events.rs
@@ -507,6 +507,17 @@ impl EventLinkedChunk {
 
         replaced_some
     }
+
+    /// Return the first chunk as a gap, if it's one.
+    pub fn first_chunk_as_gap(&self) -> Option<(ChunkIdentifier, Gap)> {
+        self.chunks().next().and_then(|chunk| {
+            if let ChunkContent::Gap(gap) = chunk.content() {
+                Some((chunk.identifier(), gap.clone()))
+            } else {
+                None
+            }
+        })
+    }
 }
 
 // Methods related to lazy-loading.