feat: Add search functionality and node selection in GraphView, enhancing user interaction with server filtering and improved edge highlighting for better visualization.

frontend/src/GraphView.jsx

@@ -11,7 +11,7 @@ import {
   Position,
 } from '@xyflow/react';
 import '@xyflow/react/dist/style.css';
-import { IconZoomIn, IconZoomOut, IconMaximize, IconMinimize } from '@tabler/icons-react';
+import { IconZoomIn, IconZoomOut, IconMaximize, IconMinimize, IconSearch, IconX, IconRefresh } from '@tabler/icons-react';
 import Tooltip from './components/Tooltip.jsx';
 
 function GraphView({ servers, connections, onCreateConnection }) {
@@ -20,6 +20,9 @@ function GraphView({ servers, connections, onCreateConnection }) {
   const containerRef = useRef(null);
   const [isFullscreen, setIsFullscreen] = useState(false);
   const [highlightedNodeId, setHighlightedNodeId] = useState(null);
+  const [selectedNodeId, setSelectedNodeId] = useState(null);
+  const [searchTerm, setSearchTerm] = useState('');
+  const [showSearch, setShowSearch] = useState(false);
   const STORAGE_KEY = 'graph-layout-servers-v1';
 
   const getTunnelStyle = useCallback((tunnelType) => {
@@ -120,16 +123,20 @@ function GraphView({ servers, connections, onCreateConnection }) {
       const style = getTunnelStyle(c.tunnelType);
       const baseLabel = c.tunnelType || 'TUNNEL';
       const ipLabel = c.ipA && c.ipB ? `${c.ipA} ⇄ ${c.ipB}` : '';
+      const edgeId = `${c.from}-${c.to}-${idx}`;
+      const isHighlighted = highlightedEdges.has(edgeId);
       return {
-        id: `${c.from}-${c.to}-${idx}`,
+        id: edgeId,
         source: String(c.from),
         target: String(c.to),
         label: ipLabel ? `${baseLabel} · ${ipLabel}` : baseLabel,
         type: 'smoothstep',
         style: {
           stroke: style.color,
-          strokeWidth: style.width,
+          strokeWidth: isHighlighted ? style.width * 1.5 : style.width,
           strokeDasharray: style.dash,
+          opacity: highlightedNodeId || selectedNodeId ? (isHighlighted ? 1 : 0.25) : 0.9,
+          filter: isHighlighted ? 'drop-shadow(0 0 4px ' + style.color + ')' : 'none',
         },
         labelBgPadding: [6, 4],
         labelBgBorderRadius: 999,
@@ -144,7 +151,7 @@ function GraphView({ servers, connections, onCreateConnection }) {
         animated: false,
       };
     });
-  }, [connections, getTunnelStyle]);
+  }, [connections, getTunnelStyle, highlightedEdges, highlightedNodeId, selectedNodeId]);
 
   const [edges, setEdges, onEdgesChange] = useEdgesState(initialEdgesData);
 
@@ -152,6 +159,76 @@ function GraphView({ servers, connections, onCreateConnection }) {
     setEdges(initialEdgesData);
   }, [initialEdgesData, setEdges]);
 
+  // Подсветка связей: вычисляем какие связи связаны с выделенным/выбранным узлом
+  const highlightedEdges = useMemo(() => {
+    const nodeId = selectedNodeId || highlightedNodeId;
+    if (!nodeId) return new Set();
+    const related = new Set();
+    (connections || []).forEach((c, idx) => {
+      if (String(c.from) === nodeId || String(c.to) === nodeId) {
+        related.add(`${c.from}-${c.to}-${idx}`);
+      }
+    });
+    return related;
+  }, [selectedNodeId, highlightedNodeId, connections]);
+
+  // Счётчик связей для каждого сервера
+  const connectionCounts = useMemo(() => {
+    const counts = {};
+    (servers || []).forEach((s) => {
+      const ip = String(s.ip);
+      counts[ip] = (connections || []).filter((c) => String(c.from) === ip || String(c.to) === ip).length;
+    });
+    return counts;
+  }, [servers, connections]);
+
+  // Поиск сервера: фильтруем по IP, DNS, провайдеру
+  const searchResults = useMemo(() => {
+    if (!searchTerm.trim()) return [];
+    const term = searchTerm.toLowerCase();
+    return (servers || []).filter((s) => 
+      String(s.ip).toLowerCase().includes(term) ||
+      String(s.dns || '').toLowerCase().includes(term) ||
+      String(s.provider || '').toLowerCase().includes(term)
+    );
+  }, [searchTerm, servers]);
+
+  // Фокус на найденный сервер
+  const focusNode = useCallback((nodeId) => {
+    if (!instanceRef.current || !nodeId) return;
+    try {
+      instanceRef.current.fitView({ 
+        nodes: [{ id: nodeId }], 
+        padding: 0.3, 
+        duration: 400 
+      });
+      setSelectedNodeId(nodeId);
+      setTimeout(() => setSelectedNodeId(null), 2000);
+    } catch {}
+  }, []);
+
+  // Сброс раскладки: очищаем localStorage и пересоздаём ноды
+  const resetLayout = useCallback(() => {
+    if (typeof window !== 'undefined') {
+      try {
+        window.localStorage.removeItem(STORAGE_KEY);
+      } catch {}
+    }
+    setNodes((current) => {
+      return current.map((n, i) => ({
+        ...n,
+        position: computeGridPosition(i, current.length),
+      }));
+    });
+    setTimeout(() => {
+      if (instanceRef.current) {
+        try {
+          instanceRef.current.fitView({ padding: 0.2 });
+        } catch {}
+      }
+    }, 100);
+  }, [setNodes, computeGridPosition]);
+
   const onConnect = useCallback(
     (params) => {
       // Делегируем создание связи в родителя, чтобы сохранить единую логику хранения
@@ -178,24 +255,50 @@ function GraphView({ servers, connections, onCreateConnection }) {
         };
         const flag = getFlagEmoji(s.country);
         const isHighlighted = highlightedNodeId === id;
+        const isSelected = selectedNodeId === id;
+        const connCount = connectionCounts[id] || 0;
+        const tooltipContent = (
+          <div style={{ fontSize: '12px', lineHeight: '1.5' }}>
+            <div><strong>IP:</strong> {s.ip}</div>
+            <div><strong>DNS:</strong> {s.dns}</div>
+            <div><strong>Провайдер:</strong> {s.provider}</div>
+            <div><strong>Страна:</strong> {s.country}</div>
+            <div><strong>Туннель:</strong> {s.tunnel}</div>
+            {s.gateway && <div><strong>Шлюз:</strong> {s.gateway}</div>}
+            <div style={{ marginTop: '4px', paddingTop: '4px', borderTop: '1px solid rgba(255,255,255,0.2)' }}>
+              <strong>Связей:</strong> {connCount}
+            </div>
+          </div>
+        );
         return (
-          <div
-            className={`card shadow-sm${isHighlighted ? ' border-primary' : ''}`}
-            style={{
-              width: 200,
-              borderRadius: 12,
-              border: `2px solid ${isHighlighted ? '#206bc4' : countryColor}`,
-              overflow: 'hidden',
-              background: '#fff',
-              boxShadow: isHighlighted
-                ? '0 0 0 1px rgba(32,107,196,0.15), 0 10px 24px rgba(15,23,42,0.25)'
-                : '0 4px 12px rgba(15,23,42,0.12)',
-              transform: isHighlighted ? 'translateY(-2px)' : 'translateY(0)',
-              transition: 'box-shadow 120ms ease-out, transform 120ms ease-out, border-color 120ms ease-out',
-            }}
-            onMouseEnter={() => setHighlightedNodeId(id)}
-            onMouseLeave={() => setHighlightedNodeId((prev) => (prev === id ? null : prev))}
-          >
+          <Tooltip content={tooltipContent} position="top" delay={300}>
+            <div
+              className={`card shadow-sm${isHighlighted || isSelected ? ' border-primary' : ''}`}
+              style={{
+                width: 200,
+                borderRadius: 12,
+                border: `2px solid ${isSelected ? '#206bc4' : isHighlighted ? '#206bc4' : countryColor}`,
+                overflow: 'hidden',
+                background: '#fff',
+                boxShadow: isSelected
+                  ? '0 0 0 2px rgba(32,107,196,0.2), 0 12px 28px rgba(15,23,42,0.3)'
+                  : isHighlighted
+                  ? '0 0 0 1px rgba(32,107,196,0.15), 0 10px 24px rgba(15,23,42,0.25)'
+                  : '0 4px 12px rgba(15,23,42,0.12)',
+                transform: isSelected ? 'translateY(-3px) scale(1.02)' : isHighlighted ? 'translateY(-2px)' : 'translateY(0)',
+                transition: 'box-shadow 120ms ease-out, transform 120ms ease-out, border-color 120ms ease-out',
+                cursor: 'pointer',
+              }}
+              onMouseEnter={() => setHighlightedNodeId(id)}
+              onMouseLeave={() => setHighlightedNodeId((prev) => (prev === id ? null : prev))}
+              onClick={() => {
+                if (selectedNodeId === id) {
+                  setSelectedNodeId(null);
+                } else {
+                  setSelectedNodeId(id);
+                }
+              }}
+            >
             {/* Точка входа соединений */}
             <Handle type="target" position={Position.Left} style={{ background: countryColor }} />
             <div className="px-2 py-1 d-flex align-items-center" style={{ background: '#f8fafc', borderBottom: '1px solid #eef2f7' }}>
@@ -215,6 +318,25 @@ function GraphView({ servers, connections, onCreateConnection }) {
                 </span>
               </div>
               <div className="ms-2 text-truncate" style={{ fontWeight: 700, color: '#1f2937', fontSize: 13 }}>{s.dns}</div>
+              {connCount > 0 && (
+                <span
+                  className="badge ms-auto"
+                  style={{
+                    background: isSelected ? '#206bc4' : '#e0e7ff',
+                    color: isSelected ? '#fff' : '#206bc4',
+                    fontSize: 10,
+                    fontWeight: 600,
+                    minWidth: '20px',
+                    height: '18px',
+                    display: 'inline-flex',
+                    alignItems: 'center',
+                    justifyContent: 'center',
+                  }}
+                  title={`${connCount} ${connCount === 1 ? 'связь' : connCount < 5 ? 'связи' : 'связей'}`}
+                >
+                  {connCount}
+                </span>
+              )}
             </div>
             <div className="px-2 py-2" style={{ lineHeight: 1.2 }}>
               <div style={{ fontSize: 12, color: '#334155' }}>{s.ip}</div>
@@ -223,10 +345,11 @@ function GraphView({ servers, connections, onCreateConnection }) {
             {/* Точка исхода соединений */}
             <Handle type="source" position={Position.Right} style={{ background: countryColor }} />
           </div>
+          </Tooltip>
         );
       },
     }),
-    [getCountryColor]
+    [getCountryColor, highlightedNodeId, selectedNodeId, connectionCounts]
   );
 
   const onInit = useCallback((inst) => {
@@ -314,9 +437,87 @@ function GraphView({ servers, connections, onCreateConnection }) {
           maskColor="rgba(0,0,0,0.05)"
         />
       </ReactFlow>
-      {/* Своя панель управления: -, +, Fit, Fullscreen */}
+      {/* Поиск сервера */}
+      {showSearch && (
+        <div className="position-absolute" style={{ left: 10, top: 10, zIndex: 10, pointerEvents: 'auto', minWidth: 280 }}>
+          <div className="card shadow-lg" style={{ borderRadius: 8 }}>
+            <div className="card-body p-2">
+              <div className="input-icon">
+                <span className="input-icon-addon">
+                  <IconSearch size={16} />
+                </span>
+                <input
+                  type="text"
+                  className="form-control form-control-sm"
+                  placeholder="Поиск по IP, DNS, провайдеру..."
+                  value={searchTerm}
+                  onChange={(e) => setSearchTerm(e.target.value)}
+                  autoFocus
+                />
+                <button
+                  type="button"
+                  className="btn btn-ghost-secondary btn-icon btn-sm"
+                  style={{ position: 'absolute', right: '4px', top: '50%', transform: 'translateY(-50%)' }}
+                  onClick={() => {
+                    setShowSearch(false);
+                    setSearchTerm('');
+                  }}
+                  aria-label="Закрыть поиск"
+                >
+                  <IconX size={14} />
+                </button>
+              </div>
+              {searchTerm.trim() && searchResults.length > 0 && (
+                <div className="mt-2" style={{ maxHeight: '200px', overflowY: 'auto' }}>
+                  {searchResults.map((s) => (
+                    <button
+                      key={s.ip}
+                      type="button"
+                      className="btn btn-ghost-secondary btn-sm w-100 text-start mb-1"
+                      onClick={() => {
+                        focusNode(String(s.ip));
+                        setShowSearch(false);
+                        setSearchTerm('');
+                      }}
+                      style={{ fontSize: '12px' }}
+                    >
+                      <div className="fw-bold">{s.dns}</div>
+                      <div className="text-muted small">{s.ip} · {s.provider}</div>
+                    </button>
+                  ))}
+                </div>
+              )}
+              {searchTerm.trim() && searchResults.length === 0 && (
+                <div className="mt-2 text-muted small text-center">Ничего не найдено</div>
+              )}
+            </div>
+          </div>
+        </div>
+      )}
+
+      {/* Своя панель управления: Поиск, -, +, Fit, Reset, Fullscreen */}
       <div className="position-absolute" style={{ right: 10, top: 10, zIndex: 10, pointerEvents: 'auto' }}>
         <div className="btn-group btn-group-sm">
+          <Tooltip content="Поиск сервера" position="left">
+            <button
+              type="button"
+              className="btn btn-outline-secondary btn-icon"
+              onClick={() => setShowSearch(!showSearch)}
+              aria-label="Поиск сервера"
+            >
+              <IconSearch size={16} />
+            </button>
+          </Tooltip>
+          <Tooltip content="Сбросить раскладку" position="left">
+            <button
+              type="button"
+              className="btn btn-outline-secondary btn-icon"
+              onClick={resetLayout}
+              aria-label="Сбросить раскладку"
+            >
+              <IconRefresh size={16} />
+            </button>
+          </Tooltip>
           <Tooltip content="Уменьшить масштаб" position="left">
             <button
               type="button"