feat: Enhance ASNsNewManager with input validation, import/export functionality, and improved UI feedback for better user experience

frontend/src/ASNsNewManager.jsx

@@ -1,14 +1,17 @@
 import { useState, useEffect, useRef } from 'react';
 import axios from 'axios';
-import {
-  IconPlus,
-  IconSearch,
-  IconEdit,
-  IconTrash,
-  IconCheck,
-  IconX,
+import { 
+  IconPlus, 
+  IconSearch, 
+  IconEdit, 
+  IconTrash, 
+  IconCheck, 
+  IconX, 
   IconDatabase,
-  IconRefresh
+  IconRefresh,
+  IconUpload,
+  IconDownload,
+  IconDeviceFloppy
 } from '@tabler/icons-react';
 
 const API_URL = '/api';
@@ -16,6 +19,7 @@ const API_URL = '/api';
 function ASNsNewManager() {
   const [items, setItems] = useState([]);
   const [newItem, setNewItem] = useState({ asn: '', community: '' });
+  const [newInvalid, setNewInvalid] = useState({ asn: false, community: false });
   const [error, setError] = useState('');
   const [success, setSuccess] = useState('');
   const [searchTerm, setSearchTerm] = useState('');
@@ -31,6 +35,9 @@ function ASNsNewManager() {
   const editInputRef = useRef(null);
   const pageSize = 10;
 
+  const isValidAsn = (value) => /^[0-9]+$/.test(String(value).trim());
+  const isValidCommunity = (value) => /^[0-9]+$/.test(String(value).trim());
+
   useEffect(() => {
     fetchItems();
   }, []);
@@ -50,17 +57,17 @@ function ASNsNewManager() {
   };
 
   const handleAddItem = () => {
-    if (newItem.asn.trim() === '') {
-      setError('Номер AS не может быть пустым.');
-      return;
-    }
-    if (newItem.community.trim() === '') {
-      setError('Community не может быть пустым.');
+    const asnOk = isValidAsn(newItem.asn);
+    const communityOk = isValidCommunity(newItem.community);
+    setNewInvalid({ asn: !asnOk, community: !communityOk });
+    if (!asnOk || !communityOk) {
+      setError('Введите корректный номер ASN и числовой community.');
       return;
     }
     setError('');
-    setItems([...items, newItem]);
+    setItems([...items, { asn: String(newItem.asn).trim(), community: String(newItem.community).trim() }]);
     setNewItem({ asn: '', community: '' });
+    setNewInvalid({ asn: false, community: false });
   };
 
   const handleEdit = (item) => {
@@ -69,8 +76,12 @@ function ASNsNewManager() {
   };
 
   const handleSaveEdit = (asn) => {
+    if (!isValidCommunity(editingValue)) {
+      setError('Community должен быть числом.');
+      return;
+    }
     const updatedItems = items.map(i =>
-      i.asn === asn ? { ...i, community: editingValue } : i
+      i.asn === asn ? { ...i, community: String(editingValue).trim() } : i
     );
     setItems(updatedItems);
     setEditingAsn(null);
@@ -101,7 +112,8 @@ function ASNsNewManager() {
     setLoading(true);
     try {
       // API ожидает domains: [{domain, type}]
-      await axios.post(`${API_URL}/asns`, { domains: items.map(i => ({ domain: i.asn, type: i.community })) });
+      const valid = items.filter(i => isValidAsn(i.asn) && isValidCommunity(i.community));
+      await axios.post(`${API_URL}/asns`, { domains: valid.map(i => ({ domain: i.asn, type: i.community })) });
       setSuccess('Изменения успешно сохранены!');
       setTimeout(() => setSuccess(''), 3000);
     } catch (error) {
@@ -112,6 +124,37 @@ function ASNsNewManager() {
     }
   };
 
+  const handleImport = () => {
+    const text = window.prompt('Вставьте строки: ASN ПРОБЕЛ COMMUNITY (по одной записи на строку)');
+    if (!text) return;
+    const lines = text.split(/\r?\n/).map(l => l.trim()).filter(Boolean);
+    const parsed = lines.map(l => {
+      const [a, c] = l.split(/\s+/);
+      return { asn: a || '', community: c || '' };
+    });
+    setItems(prev => [...prev, ...parsed]);
+  };
+
+  const handleExport = () => {
+    const header = ['asn', 'community'];
+    const csv = [header, ...items.map(i => [i.asn, i.community])]
+      .map(r => r.map(x => `"${(x ?? '').toString().replace(/"/g, '""')}"`).join(','))
+      .join('\n');
+    const blob = new Blob([csv], { type: 'text/csv;charset=utf-8;' });
+    const url = URL.createObjectURL(blob);
+    const a = document.createElement('a');
+    a.href = url;
+    a.download = `asns_${new Date().toISOString().split('T')[0]}.csv`;
+    a.click();
+    URL.revokeObjectURL(url);
+  };
+
+  const clearInvalid = () => {
+    setItems(prev => prev.filter(i => i.asn || i.community)
+      .filter(i => isValidAsn(i.asn) && isValidCommunity(i.community))
+    );
+  };
+
   // Сортировка
   const sortedItems = [...items].sort((a, b) => {
     let valA = a[sortField] || '';
@@ -208,21 +251,23 @@ function ASNsNewManager() {
                   <label className="form-label">Номер AS</label>
                   <input
                     type="text"
-                    className="form-control"
+                    className={`form-control${newInvalid.asn ? ' is-invalid' : ''}`}
                     placeholder="12345"
                     value={newItem.asn}
                     onChange={(e) => setNewItem({ ...newItem, asn: e.target.value })}
                   />
+                  {newInvalid.asn && <div className="invalid-feedback">Только цифры</div>}
                 </div>
                 <div className="mb-3">
                   <label className="form-label">Community</label>
                   <input
                     type="text"
-                    className="form-control"
+                    className={`form-control${newInvalid.community ? ' is-invalid' : ''}`}
                     placeholder="112"
                     value={newItem.community}
                     onChange={(e) => setNewItem({ ...newItem, community: e.target.value })}
                   />
+                  {newInvalid.community && <div className="invalid-feedback">Только цифры</div>}
                 </div>
                 <div className="form-footer">
                   <button type="submit" className="btn btn-primary w-100">
@@ -256,7 +301,7 @@ function ASNsNewManager() {
                     </>
                   ) : (
                     <>
-                      <IconDatabase className="icon me-2" />
+                      <IconDeviceFloppy className="icon me-2" />
                       Сохранить в S3
                     </>
                   )}
@@ -269,6 +314,28 @@ function ASNsNewManager() {
                   <IconRefresh className="icon me-2" />
                   Обновить
                 </button>
+                <button 
+                  className="btn btn-outline-primary"
+                  onClick={handleImport}
+                >
+                  <IconUpload className="icon me-2" />
+                  Импорт из буфера
+                </button>
+                <button 
+                  className="btn btn-outline-primary"
+                  onClick={handleExport}
+                  disabled={items.length === 0}
+                >
+                  <IconDownload className="icon me-2" />
+                  Экспорт CSV
+                </button>
+                <button 
+                  className="btn btn-outline-secondary"
+                  onClick={clearInvalid}
+                  disabled={items.length === 0}
+                >
+                  Очистить пустые/невалидные
+                </button>
               </div>
             </div>
           </div>
@@ -277,7 +344,7 @@ function ASNsNewManager() {
         <div className="col-lg-9">
           <div className="card">
             <div className="card-header d-flex justify-content-between align-items-center">
-              <h3 className="card-title mb-0">Список ASN</h3>
+              <h3 className="card-title mb-0">Список ASN <span className="badge bg-blue-lt text-blue ms-2">{items.length}</span></h3>
               <div className="d-flex gap-2 w-50">
                 {/* Фильтр по community */}
                 <select className="form-select w-auto" value={filterCommunity} onChange={e => { setFilterCommunity(e.target.value); setCurrentPage(1); }}>
@@ -334,14 +401,14 @@ function ASNsNewManager() {
                           <>
                             <input
                               type="text"
-                              className="form-control d-inline-block w-auto me-2"
+                              className={`form-control d-inline-block w-auto me-2${isValidCommunity(editingValue) ? '' : ' is-invalid'}`}
                               value={editingValue}
                               ref={editInputRef}
                               onChange={e => setEditingValue(e.target.value)}
                               onKeyDown={e => handleEditKeyDown(e, item.asn)}
                               style={{maxWidth: 120}}
                             />
-                            <button className="btn btn-success btn-icon me-1" onClick={() => handleSaveEdit(item.asn)}><IconCheck size={18} /></button>
+                            <button className="btn btn-success btn-icon me-1" onClick={() => handleSaveEdit(item.asn)} disabled={!isValidCommunity(editingValue)}><IconCheck size={18} /></button>
                             <button className="btn btn-secondary btn-icon" onClick={handleCancelEdit}><IconX size={18} /></button>
                           </>
                         ) : (

frontend/src/BillingManager.jsx

@@ -533,7 +533,7 @@ function BillingManager() {
         </div>
         <div className="card-body">
           <div className="table-responsive">
-            <table className="table table-vcenter">
+            <table className="table card-table table-vcenter table-nowrap mb-0">
               <thead>
                 <tr>
                   <th 
@@ -603,7 +603,11 @@ function BillingManager() {
                 </tr>
               </thead>
               <tbody>
-                {paginatedData.map(item => (
+                {paginatedData.length === 0 ? (
+                  <tr>
+                    <td colSpan="8" className="text-center text-muted py-4">Ничего не найдено. Измените фильтры или параметры поиска.</td>
+                  </tr>
+                ) : paginatedData.map(item => (
                   <tr key={item.id}>
                     <td>
                       <div className="d-flex align-items-center">
@@ -712,8 +716,8 @@ function BillingManager() {
                         </button>
                       </div>
                     </td>
-                  </tr>
-                ))}
+                   </tr>
+                 ))}
               </tbody>
             </table>
           </div>

frontend/src/Dashboard.jsx

@@ -16,9 +16,9 @@ import {
   IconCreditCard
 } from '@tabler/icons-react';
 
-function StatCard({ icon: Icon, color, value, title, subtitle }) {
+function StatCard({ icon: Icon, color, value, title, subtitle, to }) {
   return (
-    <div className="card h-100">
+    <div className="card h-100 position-relative">
       <div className="card-body d-flex align-items-center">
         <span className={`avatar avatar-lg me-3 bg-${color}-lt text-${color} border-0`}>
           <Icon size={32} />
@@ -28,6 +28,9 @@ function StatCard({ icon: Icon, color, value, title, subtitle }) {
           <div className="text-muted lh-1">{subtitle}</div>
         </div>
       </div>
+      {to && (
+        <Link to={to} className="stretched-link" aria-label={title}></Link>
+      )}
     </div>
   );
 }
@@ -173,6 +176,7 @@ function Dashboard() {
             value={loading ? '...' : stats.domainsCount ?? '—'}
             title="Доменов"
             subtitle="Всего доменов в системе"
+            to="/domains"
           />
         </div>
         <div className="col-md-3">
@@ -182,6 +186,7 @@ function Dashboard() {
             value={loading ? '...' : stats.ipRangesCount ?? '—'}
             title="IP-диапазонов"
             subtitle="Всего IP диапазонов"
+            to="/ip-ranges"
           />
         </div>
         <div className="col-md-3">
@@ -191,6 +196,7 @@ function Dashboard() {
             value={loading ? '...' : stats.asnsCount ?? '—'}
             title="AS"
             subtitle="Всего Autonomous Systems"
+            to="/asns"
           />
         </div>
         <div className="col-md-3">
@@ -200,6 +206,7 @@ function Dashboard() {
             value={loading ? '...' : stats.serversCount ?? '—'}
             title="Серверов"
             subtitle="Всего серверов"
+            to="/servers"
           />
         </div>
       </div>
@@ -244,37 +251,7 @@ function Dashboard() {
         </div>
       </div>
 
-      {/* Быстрые действия */}
-      <div className="card">
-        <div className="card-header">
-          <h3 className="card-title">Быстрые действия</h3>
-        </div>
-        <div className="card-body">
-          <div className="btn-list">
-            <Link to="/domains" className="btn btn-outline-primary">
-              <IconWorld className="me-2" /> Домены
-            </Link>
-            <Link to="/ip-ranges" className="btn btn-outline-primary">
-              <IconNetwork className="me-2" /> IP-диапазоны
-            </Link>
-            <Link to="/asns" className="btn btn-outline-primary">
-              <IconNetwork className="me-2" /> AS
-            </Link>
-            <Link to="/servers" className="btn btn-outline-primary">
-              <IconServer className="me-2" /> Серверы
-            </Link>
-            <Link to="/filters" className="btn btn-outline-primary">
-              <IconFilter className="me-2" /> Фильтры
-            </Link>
-            <Link to="/auto-urls" className="btn btn-outline-primary">
-              <IconDownload className="me-2" /> Авто URL
-            </Link>
-            <Link to="/billing" className="btn btn-outline-primary">
-              <IconCreditCard className="me-2" /> Биллинг
-            </Link>
-          </div>
-        </div>
-      </div>
+      {/* Убрали быстрые действия, карточки выше кликабельны */}
     </div>
   );
 }

frontend/src/ServerManager.jsx

@@ -479,7 +479,7 @@ function ServerManager() {
       {/* Таблица серверов на всю ширину */}
       <div className="card w-100">
         <div className="card-header d-flex justify-content-between align-items-center">
-          <h3 className="card-title mb-0">Список серверов</h3>
+          <h3 className="card-title mb-0">Список серверов <span className="badge bg-blue-lt text-blue ms-2">{filteredServers.length}</span></h3>
           <div className="d-flex gap-2 w-75">
             {/* Фильтры и поиск */}
             <select className="form-select w-auto" value={filterTunnel} onChange={e => { setFilterTunnel(e.target.value); setCurrentPage(1); }}>
@@ -512,6 +512,14 @@ function ServerManager() {
                 onChange={e => { setSearchTerm(e.target.value); setCurrentPage(1); }}
               />
             </div>
+            <button
+              className="btn btn-outline-secondary"
+              type="button"
+              onClick={() => { setFilterTunnel(''); setFilterCountry(''); setFilterProvider(''); setSearchTerm(''); setCurrentPage(1); }}
+              title="Сбросить фильтры"
+            >
+              Сбросить
+            </button>
           </div>
         </div>
         <div className="table-responsive">
@@ -571,7 +579,11 @@ function ServerManager() {
               </tr>
             </thead>
             <tbody>
-              {paginatedServers.map((server) => (
+              {paginatedServers.length === 0 ? (
+                <tr>
+                  <td colSpan={8} className="text-center text-muted py-4">Ничего не найдено. Измените фильтры или поиск.</td>
+                </tr>
+              ) : paginatedServers.map((server) => (
                 <tr key={server.ip} className={editingServer === server.ip ? 'table-info' : ''}>
                   <td>{server.ip}</td>
                   <td>{server.dns}</td>