优化交互和外观

src/App.css

@@ -1,8 +1,10 @@
 #root {
-  max-width: 1280px;
-  margin: 0 auto;
-  padding: 2rem;
-  text-align: center;
+  width: 100vw;
+  height: 100vh;
+  margin: 0;
+  padding: 0;
+  max-width: none; /* 必须取消最大宽度限制 */
+  text-align: left; /* 取消居中对齐，否则 toolbar 里的文字可能会乱 */
 }
 
 .logo {
@@ -53,6 +55,7 @@
 
 .toolbar-group {
   display: flex;
+  flex-direction: column;
   gap: 8px;
   background: white;
   padding: 10px;
@@ -82,3 +85,10 @@
   transform: scale(0.95);
 }
 
+.toolbar-item {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  font-size: 14px;
+  color: #333;
+}

src/App.tsx

@@ -9,9 +9,12 @@ import {
   ReactFlowProvider,
   NodeTypes,
   NodeChange,
-  OnEdgesChange,
+  EdgeChange,
   MarkerType,
+  NodeMouseHandler,
   OnConnect,
+  MiniMap,
+  IsValidConnection
 } from '@xyflow/react';
 import '@xyflow/react/dist/style.css';
 import { AppNode, AppEdge, NodeData } from './types/graph';
@@ -21,23 +24,9 @@ import ConfigViewer from './components/ConfigViewer';
 import Toggle from "./components/Toggle"
 import './App.css';
 
-const initialNodes: AppNode[] = [
-  {
-    id: 'n1',
-    position: { x: 250, y: 50 },
-    data: {
-      label: 'Node-A',
-      ipAddress: '10.0.0.1',
-      listenPort: '51820',
-      privateKey: '',
-      publicKey: '',
-    },
-    type: 'custom',
-  },
-];
+const initialNodes: AppNode[] = [];
 const initialEdges: AppEdge[] = [];
 
-
 const nodeTypes : NodeTypes = {
   custom: CustomNode,
 };
@@ -47,31 +36,55 @@ function FlowContent(): ReactNode {
   const [edges, setEdges] = useState<AppEdge[]>(initialEdges);
   const [editingNode, setEditingNode] = useState<NodeData | null>(null);
   const [showConfigViewer, setShowConfigViewer] = useState(false);
+  const [enableTwoWay, setEnableTwoWay] = useState(false);
 
   const onNodesChange = useCallback(
     (changes: NodeChange<AppNode>[]) => setNodes((nds) => applyNodeChanges<AppNode>(changes, nds)),
-    [],
-  );
+    []);
 
-  const onEdgesChange = useCallback<OnEdgesChange>(
-    (changes) => setEdges((edgesSnapshot) => applyEdgeChanges(changes, edgesSnapshot)),
-    [],
-  );
+  const onEdgesChange = useCallback(
+    (changes : EdgeChange<AppEdge>[]) => setEdges((eds) => applyEdgeChanges<AppEdge>(changes, eds)),
+    []);
 
   const onConnect = useCallback<OnConnect>(
-    (params) => setEdges((edgesSnapshot) => addEdge(params, edgesSnapshot)),
-    [],
-  );
+    (params) => {
+      const newEdge : AppEdge = {
+        ...params,
+        id: `e-${Date.now()}`,
+        animated: !enableTwoWay,
+        markerEnd: enableTwoWay ? undefined : { type: MarkerType.ArrowClosed },
+        data : {
+          isTwoWayEdge: enableTwoWay
+        }
+      }
+      return setEdges((eds) => addEdge<AppEdge>(newEdge, eds));
+    },
+    [enableTwoWay]);
 
-  const onNodeClick = useCallback((_event: React.MouseEvent, node: AppNode) => {
-    setEditingNode(node.data);
-  }, []);
+  const onNodeClick = useCallback<NodeMouseHandler<AppNode>>(
+    (_event, node) => setEditingNode(node.data), 
+    []);
+
+  const validateConnection = useCallback<IsValidConnection>(
+    (connection) => {
+      if (connection.source === connection.target) {
+        return false;
+      }
+      const isDuplicate = edges.some(
+        (edge) => (
+          (edge.source === connection.source && edge.target === connection.target) ||
+          (edge.source === connection.target && edge.target === connection.source)
+        )
+      );
+      return !isDuplicate;
+    },
+    [edges]);
 
   const handleAddNode = (): void => {
     const newNodeId = `n${Date.now()}`;
     const newNode: AppNode = {
       id: newNodeId,
-      position: { x: Math.random() * 500, y: Math.random() * 500 },
+      position: { x: 0, y: 0 },
       data: {
         label: `Node-${String.fromCharCode(65 + (nodes.length % 26))}`,
         ipAddress: `10.0.0.${nodes.length + 2}`,
@@ -80,8 +93,9 @@ function FlowContent(): ReactNode {
         publicKey: '',
       },
       type: 'custom',
+      selected: true
     };
-    setNodes((prev) => [...prev, newNode]);
+    setNodes((prev) => [...prev.map(node => ({ ...node, selected: false })), newNode]);
   };
 
   const handleUpdateNode = (updatedData: NodeData): void => {
@@ -107,28 +121,36 @@ function FlowContent(): ReactNode {
         onNodeDoubleClick={onNodeClick}
         nodeTypes={nodeTypes}
         deleteKeyCode={["Delete"]}
-        defaultEdgeOptions={{ 
-          animated: true,
-          markerEnd: { type: MarkerType.ArrowClosed }
-        }}
         fitView
+        isValidConnection={validateConnection}
       >
         <Background />
         <Controls />
+        <MiniMap 
+        nodeColor={(n) => {
+          if (n.type === 'input') return 'blue';
+          return '#eee';
+        }} 
+        maskColor="rgba(0, 0, 0, 0.1)"
+        position="bottom-right" // 也可以是 top-right 等
+      />
       </ReactFlow>
 
       <div className="toolbar">
         <div className="toolbar-group">
+          <Toggle 
+            className="toolbar-item" 
+            checked = {enableTwoWay}
+            onChange={checked => setEnableTwoWay(checked)} >双向连接</Toggle>
+
           <button className="toolbar-btn" onClick={handleAddNode} title="添加新节点">
             ➕ 添加节点
           </button>
-          <button
-            className="toolbar-btn"
-            onClick={() => setShowConfigViewer(true)}
-            title="查看和下载WireGuard配置"
-          >
+
+          <button className="toolbar-btn" onClick={() => setShowConfigViewer(true)} title="查看配置">
             📋 配置
           </button>
+
         </div>
       </div>
 

src/components/CustomNode.tsx

@@ -30,7 +30,7 @@ export default function CustomNode({
 
       {[Position.Top, Position.Bottom, Position.Right, Position.Left].map((position) => (
         (["target", "source"] as const).map((type) => (
-          <Handle type={type} position={position} id={position} key={position} className="node-handle"/>
+          <Handle type={type} position={position} id={position} key={`${type}-${position}`} className="node-handle"/>
         ))
       ))}
     </div>

src/components/Toggle.tsx

@@ -2,29 +2,37 @@ import { ChangeEvent } from 'react'
 import "./Toggle.css" 
 
 interface ToggleProps {
-  checked: boolean;
-  onChange: (checked: boolean) => void;
-  name?: string;
+    checked: boolean;
+    onChange?: (checked: boolean) => void;
+    name?: string;
+    children?: React.ReactNode;
+    className?: string,
 }
 
 const Toggle : React.FC<ToggleProps> = ({
     checked,
     onChange,
-    name
+    name,
+    children,
+    className = ""
 }) => {
     const handleChange = (e: ChangeEvent<HTMLInputElement>) => {
         onChange?.(e.target.checked);
     };
     return (
-        <label className="switch">
-            <input
-                type="checkbox"
-                name={name}
-                checked={checked}
-                onChange={handleChange}
-            />
-            <span className="slider round"></span>
-        </label>
+        <div className={className}>
+            {children && <span>{children}</span>}
+
+            <label className="switch">
+                <input
+                    type="checkbox"
+                    name={name}
+                    checked={checked}
+                    onChange={handleChange}
+                />
+                <span className="slider round"></span>
+            </label>
+        </div>
     )
 }
 

src/types/graph.ts

@@ -2,7 +2,7 @@ import { Node, Edge } from '@xyflow/react';
 
 export type AppNode = Node<NodeData>;
 
-export type AppEdge = Edge;
+export type AppEdge = Edge<EdgeData>;
 
 export type NodeData = {
   label: string;
@@ -14,3 +14,7 @@ export type NodeData = {
   dnsServers?: string;
   persistentKeepalive?: string;
 }
+
+export type EdgeData = {
+  isTwoWayEdge: boolean
+}