feat(SettingsPage): implement traffic interface selection with loading state and error handling for enhanced user interaction

frontend/src/SettingsPage.jsx

@@ -1,4 +1,4 @@
-import { useEffect, useState, useMemo } from 'react';
+import { useEffect, useState, useMemo, useCallback } from 'react';
 import { useLocation, useNavigate } from 'react-router-dom';
 import api from './lib/api.js';
 import {
@@ -11,6 +11,7 @@ import {
   IconWorld,
   IconSearch,
   IconChartBar,
+  IconRefresh,
 } from '@tabler/icons-react';
 import FormField from './components/FormField';
 import ErrorAlert from './components/ErrorAlert';
@@ -72,7 +73,10 @@ export default function SettingsPage() {
   const [pingServicesServerId, setPingServicesServerId] = useState('');
   const [pingServicesGatewayIp, setPingServicesGatewayIp] = useState('');
   const [pingServicesCacheSeconds, setPingServicesCacheSeconds] = useState('');
-  const [trafficInterfaceNames, setTrafficInterfaceNames] = useState('');
+  const [trafficInterfaceNamesSelected, setTrafficInterfaceNamesSelected] = useState([]);
+  const [trafficInterfacesList, setTrafficInterfacesList] = useState([]);
+  const [trafficInterfacesLoading, setTrafficInterfacesLoading] = useState(false);
+  const [trafficInterfacesError, setTrafficInterfacesError] = useState('');
   const [serversList, setServersList] = useState([]);
   const [sidebarSearch, setSidebarSearch] = useState('');
   const [activeSection, setActiveSection] = useState(() => {
@@ -108,6 +112,36 @@ export default function SettingsPage() {
     }
   }, [location.hash]);
 
+  const fetchTrafficInterfaces = useCallback(async () => {
+    setTrafficInterfacesLoading(true);
+    setTrafficInterfacesError('');
+    try {
+      const { data } = await api.get('/traffic/interface-stats');
+      const jumphosts = Array.isArray(data?.jumphosts) ? data.jumphosts : [];
+      const namesSet = new Set();
+      for (const jh of jumphosts) {
+        if (Array.isArray(jh.interfaces)) {
+          for (const i of jh.interfaces) {
+            if (i?.name != null && String(i.name).trim()) {
+              namesSet.add(String(i.name).trim());
+            }
+          }
+        }
+      }
+      setTrafficInterfacesList(Array.from(namesSet).sort((a, b) => a.localeCompare(b)));
+    } catch (e) {
+      setTrafficInterfacesError(e?.response?.data?.message || e?.message || 'Не удалось загрузить список интерфейсов');
+      setTrafficInterfacesList([]);
+    } finally {
+      setTrafficInterfacesLoading(false);
+    }
+  }, []);
+
+  useEffect(() => {
+    if (activeSection !== 'traffic-interfaces' || trafficInterfacesList.length > 0) return;
+    fetchTrafficInterfaces();
+  }, [activeSection, trafficInterfacesList.length, fetchTrafficInterfaces]);
+
   const goToSection = (id) => {
     setActiveSection(id);
     navigate(`/settings#${id}`, { replace: true });
@@ -150,12 +184,10 @@ export default function SettingsPage() {
             : ''
         );
         const rawNames = data?.trafficInterfaceNames;
-        setTrafficInterfaceNames(
+        setTrafficInterfaceNamesSelected(
           Array.isArray(rawNames)
-            ? rawNames.filter((n) => n != null).map(String).join(', ')
-            : typeof rawNames === 'string'
-              ? rawNames
-              : ''
+            ? rawNames.filter((n) => n != null).map(String)
+            : []
         );
         const e =
           settingsRes?.headers?.etag || settingsRes?.headers?.ETag || '';
@@ -229,10 +261,9 @@ export default function SettingsPage() {
           0,
           parseInt(pingServicesCacheSeconds, 10) || 0
         ),
-        trafficInterfaceNames: (trafficInterfaceNames || '')
-          .split(/[\n,]+/)
-          .map((s) => s.trim())
-          .filter(Boolean),
+        trafficInterfaceNames: Array.isArray(trafficInterfaceNamesSelected)
+          ? trafficInterfaceNamesSelected.filter(Boolean)
+          : [],
       };
       const payload = { settings: mergedSettings, etag };
       const res = await api.post('/ui-settings', payload);
@@ -557,25 +588,82 @@ export default function SettingsPage() {
               <>
                 <SectionHeading title="Настройка Аналитики" icon={IconChartBar} />
                 <p className="text-muted mb-3">
-                  Укажите, какие интерфейсы учитывать на странице <strong>Расход трафика</strong>.
-                  Пустое поле — учитываются все интерфейсы. Имена можно перечислить через запятую или с новой строки.
+                  Отметьте интерфейсы, которые нужно учитывать на странице <strong>Расход трафика</strong>.
+                  Если ни один не выбран — учитываются все интерфейсы.
                 </p>
-                <div className="row g-2">
-                  <div className="col-12">
-                    <label className="form-label">Учитывать интерфейсы</label>
-                    <textarea
-                      className="form-control font-monospace"
-                      rows={4}
-                      value={trafficInterfaceNames}
-                      onChange={(e) => setTrafficInterfaceNames(e.target.value)}
-                      placeholder="ether1, ether2, pppoe-out1"
-                      disabled={saving}
-                      aria-label="Список имён интерфейсов"
-                    />
-                    <div className="form-text">
-                      Например: ether1, ether2, pppoe-out1. Пусто — все интерфейсы.
-                    </div>
+                <div className="mb-3">
+                  <div className="form-label d-flex align-items-center justify-content-between flex-wrap gap-2">
+                    <span>Учитывать интерфейсы</span>
+                    <span className="d-flex align-items-center gap-2">
+                      <button
+                        type="button"
+                        className="btn btn-sm btn-outline-secondary"
+                        onClick={() => setTrafficInterfaceNamesSelected([...trafficInterfacesList])}
+                        disabled={saving || trafficInterfacesLoading || trafficInterfacesList.length === 0}
+                      >
+                        Выбрать все
+                      </button>
+                      <button
+                        type="button"
+                        className="btn btn-sm btn-outline-secondary"
+                        onClick={() => setTrafficInterfaceNamesSelected([])}
+                        disabled={saving}
+                      >
+                        Снять все
+                      </button>
+                      <button
+                        type="button"
+                        className="btn btn-sm btn-ghost-secondary btn-icon"
+                        onClick={fetchTrafficInterfaces}
+                        disabled={saving || trafficInterfacesLoading}
+                        title="Обновить список интерфейсов"
+                        aria-label="Обновить список"
+                      >
+                        <IconRefresh size={18} className={trafficInterfacesLoading ? 'spin' : ''} />
+                      </button>
+                    </span>
                   </div>
+                  {trafficInterfacesError && (
+                    <div className="alert alert-warning py-2 mb-2">
+                      {trafficInterfacesError}
+                    </div>
+                  )}
+                  {trafficInterfacesLoading && trafficInterfacesList.length === 0 && (
+                    <div className="text-muted py-4 d-flex align-items-center gap-2">
+                      <span className="spinner-border spinner-border-sm" role="status" aria-hidden="true" />
+                      Загрузка списка интерфейсов с роутеров…
+                    </div>
+                  )}
+                  {!trafficInterfacesLoading && trafficInterfacesList.length === 0 && !trafficInterfacesError && (
+                    <div className="text-muted py-3">
+                      Нет доступных интерфейсов. Добавьте jumphost-серверы с MikroTik API и нажмите «Обновить».
+                    </div>
+                  )}
+                  {trafficInterfacesList.length > 0 && (
+                    <div className="row g-2 mt-1">
+                      {trafficInterfacesList.map((name) => (
+                        <div key={name} className="col-12 col-sm-6 col-md-4 col-lg-3">
+                          <label className="form-check">
+                            <input
+                              className="form-check-input"
+                              type="checkbox"
+                              checked={trafficInterfaceNamesSelected.includes(name)}
+                              onChange={(e) => {
+                                if (e.target.checked) {
+                                  setTrafficInterfaceNamesSelected((prev) => [...prev, name].sort((a, b) => a.localeCompare(b)));
+                                } else {
+                                  setTrafficInterfaceNamesSelected((prev) => prev.filter((n) => n !== name));
+                                }
+                              }}
+                              disabled={saving}
+                              aria-label={`Интерфейс ${name}`}
+                            />
+                            <span className="form-check-label font-monospace">{name}</span>
+                          </label>
+                        </div>
+                      ))}
+                    </div>
+                  )}
                 </div>
               </>
               )}