Add traffic group sorting controls

src/web/features/traffic/TrafficFeature.tsx

@@ -11,11 +11,13 @@ import { formatByteString } from '../../utils/format.js';
 import {
   groupTrafficConnections,
   reconcileTrafficGroups,
+  sortTrafficGroups,
   trafficGroupMatches,
   type DisplayedTrafficGroup,
   type TrafficConnectionGroup,
   type TrafficQualityFilter,
   type TrafficRouteFilter,
+  type TrafficSort,
 } from './trafficRows.js';
 
 const POLL_MS = 1_000;
@@ -310,6 +312,7 @@ export function TrafficPanel({ feature }: { feature: TrafficFeature }) {
   const [query, setQuery] = useState('');
   const [routeFilter, setRouteFilter] = useState<TrafficRouteFilter>('all');
   const [qualityFilter, setQualityFilter] = useState<TrafficQualityFilter>('all');
+  const [sortMode, setSortMode] = useState<TrafficSort>('popular');
   const [retentionSeconds, setRetentionSeconds] = useState<RetentionSeconds>(storedRetentionSeconds);
   const [displayedGroups, setDisplayedGroups] = useState<DisplayedTrafficGroup[]>([]);
   const [reducedMotion, setReducedMotion] = useState(() => (
@@ -324,9 +327,9 @@ export function TrafficPanel({ feature }: { feature: TrafficFeature }) {
     return snapshotTime - Date.parse(connection.closedAt) < retentionSeconds * 1_000;
   }), [snapshot, snapshotTime, retentionSeconds]);
   const trafficGroups = useMemo(() => groupTrafficConnections(retainedConnections), [retainedConnections]);
-  const groups = useMemo(() => trafficGroups.filter((group) => (
+  const groups = useMemo(() => sortTrafficGroups(trafficGroups.filter((group) => (
     trafficGroupMatches(group, query, routeFilter, qualityFilter)
-  )), [trafficGroups, query, routeFilter, qualityFilter]);
+  )), sortMode), [trafficGroups, query, routeFilter, qualityFilter, sortMode]);
 
   useEffect(() => {
     const media = matchMedia('(prefers-reduced-motion: reduce)');
@@ -438,6 +441,20 @@ export function TrafficPanel({ feature }: { feature: TrafficFeature }) {
           onClick={() => setQualityFilter(value)}
         >{label}</button>)}
       </div>
+      <div className="client-traffic-retention">
+        <span>Сортировка</span>
+        <div className="client-traffic-filters" role="group" aria-label="Сортировка соединений">
+          {([
+            ['popular', 'Популярные'],
+            ['recent', 'Последние'],
+          ] as const).map(([value, label]) => <button
+            type="button"
+            key={value}
+            aria-pressed={sortMode === value}
+            onClick={() => setSortMode(value)}
+          >{label}</button>)}
+        </div>
+      </div>
       <div className="client-traffic-retention">
         <span>Показывать завершённые</span>
         <div className="client-traffic-filters" role="group" aria-label="Время показа завершённых соединений">

src/web/features/traffic/trafficRows.ts

@@ -3,6 +3,7 @@ import { byteString } from '../../utils/format.js';
 
 export type TrafficRouteFilter = 'all' | 'vpn' | 'direct' | 'other';
 export type TrafficQualityFilter = 'all' | 'recognized' | 'attention';
+export type TrafficSort = 'popular' | 'recent';
 
 export interface TrafficConnectionGroup {
   id: string;
@@ -90,6 +91,22 @@ export function groupTrafficConnections(connections: LiveTrafficConnection[]) {
   return [...grouped].map(([id, members]) => buildTrafficGroup(id, members));
 }
 
+function newestStartedAt(group: TrafficConnectionGroup) {
+  return group.connections.reduce((latest, connection) => (
+    connection.startedAt > latest ? connection.startedAt : latest
+  ), '');
+}
+
+export function sortTrafficGroups(groups: TrafficConnectionGroup[], mode: TrafficSort) {
+  return [...groups].sort((left, right) => {
+    const frequency = right.connections.length - left.connections.length;
+    const recent = newestStartedAt(right).localeCompare(newestStartedAt(left));
+    const primary = mode === 'popular' ? frequency || recent : recent || frequency;
+    if (primary) return primary;
+    return left.id < right.id ? -1 : left.id > right.id ? 1 : 0;
+  });
+}
+
 export function trafficGroupMatches(
   group: TrafficConnectionGroup,
   query: string,