refactor(EasySwitchManager): optimize ping requests by using parallel execution and immediate UI updates for improved responsiveness

frontend/src/EasySwitchManager.jsx

@@ -284,37 +284,25 @@ function EasySwitchManager() {
 
       if (tasks.length === 0) return;
 
-      const results = await Promise.all(
-        tasks.map(async ({ routerId, ip, key }) => {
-          try {
-            const { data } = await api.post('/mikrotik/ping', {
-              serverId: routerId,
-              gatewayIp: ip,
-              target: 'www.gstatic.com',
-              count: 5,
-            });
-            return { key, value: typeof data?.avgMs === 'number' ? Math.round(data.avgMs) : null };
-          } catch (e) {
+      // Запросы идут параллельно; обновляем UI по мере прихода каждого ответа,
+      // чтобы значения на интерфейсе отображались быстрее.
+      tasks.forEach(({ routerId, ip, key }) => {
+        api
+          .post('/mikrotik/ping', {
+            serverId: routerId,
+            gatewayIp: ip,
+            target: 'www.gstatic.com',
+            count: 5,
+          })
+          .then(({ data }) => {
+            const value = typeof data?.avgMs === 'number' ? Math.round(data.avgMs) : null;
+            setPingMap((prev) => ({ ...prev, [key]: value }));
+          })
+          .catch((e) => {
             console.warn('Failed to fetch ping for', routerId, ip, e?.message || e);
-            return { key, value: null };
-          }
-        })
-      );
-
-      if (results.length > 0) {
-        setPingMap(prev => {
-          const next = { ...prev };
-          results.forEach(r => {
-            next[r.key] = r.value;
+            setPingMap((prev) => ({ ...prev, [key]: null }));
           });
-          return next;
-        });
-
-        try {
-          console.log('[EasySwitch] ping tasks count:', tasks.length);
-          console.log('[EasySwitch] ping results sample:', results.slice(0, 10));
-        } catch (_) {}
-      }
+      });
     } catch (e) {
       console.warn('prefetchPings error:', e?.message || e);
     }