Room list: remove usage of algorithms of old room list store (#33975)

* feat:add missing methods to rls V3 * feat: use rls v3 methods instead of old alrgorithms * feat: move stabel function to own utils * feat: use this new moved functions * test: cleaner test
2026-06-29 14:29:28 +00:00
parent 0d3efa5fa7
commit c42899b0b1
5 changed files with 111 additions and 11 deletions
@@ -0,0 +1,45 @@
+/*
+Copyright 2026 Element Creations Ltd.
+
+SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only OR LicenseRef-Element-Commercial
+Please see LICENSE files in the repository root for full details.
+*/
+
+import type { Room } from "matrix-js-sdk/src/matrix";
+import { getLastTimestamp } from "../../stores/room-list-v3/skip-list/sorters/utils/getLastTimestamp";
+
+/**
+ * Sort an arbitrary list of rooms by recency (most recent activity first).
+ *
+ * Unlike the main room list sorting, this is a pure recency sort: muted and
+ * low-priority rooms are NOT moved to the bottom. The provided array is not
+ * mutated; a sorted copy is returned. The given list is sorted as-is and is
+ * not filtered by the active space.
+ * @param rooms The rooms to sort.
+ * @param userId The mxId of the current user.
+ */
+export function sortRoomsByRecency(rooms: Room[], userId: string): Room[] {
+    const cache = new Map<string, number>();
+    const ts = (room: Room): number => {
+        let value = cache.get(room.roomId);
+        if (value === undefined) {
+            value = getLastTimestamp(room, userId);
+            cache.set(room.roomId, value);
+        }
+        return value;
+    };
+    return [...rooms].sort((a, b) => ts(b) - ts(a));
+}
+
+/**
+ * Compare two rooms by recency, most recent activity first.
+ *
+ * Intended for sorting mixed result sets where rooms need to be ordered
+ * relative to each other (e.g. spotlight search results).
+ * @param roomA The first room.
+ * @param roomB The second room.
+ * @param userId The mxId of the current user.
+ */
+export function compareRoomsByRecency(roomA: Room, roomB: Room, userId: string): number {
+    return getLastTimestamp(roomB, userId) - getLastTimestamp(roomA, userId);
+}