feat: 前端代码

2026-04-05 14:41:11 +08:00
parent 466624ca2e
commit a7675458a1
26 changed files with 7834 additions and 0 deletions
@@ -0,0 +1,9 @@
+import KnowledgeGraph from './pages/KnowledgeGraph';
+
+function App() {
+  return (
+    <KnowledgeGraph />
+  );
+}
+
+export default App;
@@ -0,0 +1 @@
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@@ -0,0 +1,161 @@
+import { useEffect, useRef } from 'react';
+import { Graph } from '@antv/g6';
+import type { GraphData, Node, Edge, GraphLayoutConfig } from '../../types/graph';
+
+interface GraphViewProps {
+  data: GraphData;
+  layout?: GraphLayoutConfig;
+  onNodeClick?: (node: Node) => void;
+  onEdgeClick?: (edge: Edge) => void;
+  onNodeHover?: (node: Node | null) => void;
+  height?: number;
+}
+
+export const GraphView = ({
+  data,
+  layout = { type: 'force' },
+  onNodeClick,
+  onEdgeClick,
+  onNodeHover,
+  height = 600,
+}: GraphViewProps) => {
+  const containerRef = useRef<HTMLDivElement>(null);
+  const graphRef = useRef<Graph | null>(null);
+
+  useEffect(() => {
+    if (!containerRef.current || graphRef.current) return;
+
+    try {
+      const graphData = {
+        nodes: data.nodes.map((node: Node) => ({
+          ...node,
+          id: node.id,
+        })),
+        edges: data.edges.map((edge: Edge) => ({
+          ...edge,
+          id: edge.id,
+          source: edge.source,
+          target: edge.target,
+        })),
+      };
+
+      const graph = new Graph({
+        container: containerRef.current,
+        width: containerRef.current.clientWidth,
+        height: height,
+        data: graphData as any,
+        autoFit: 'view',
+        layout: {
+          type: layout.type,
+          preventOverlap: true,
+          nodeSize: layout.nodeSize || 30,
+          linkDistance: layout.linkDistance || 100,
+        },
+        behaviors: ['drag-canvas', 'zoom-canvas', 'drag-element', 'hover-activate'],
+        node: {
+          style: {
+            size: 40,
+            fill: '#C6E5FF',
+            stroke: '#5B8FF9',
+            lineWidth: 2,
+          },
+        },
+        edge: {
+          type: 'cubic',
+          style: {
+            stroke: '#e2e2e2',
+            lineWidth: 2,
+          },
+        },
+      });
+
+      graphRef.current = graph;
+      graph.render();
+
+      graph.on('node:click', (evt) => {
+        const eventData = evt as { itemId?: string };
+        if (eventData.itemId) {
+          const nodeData = data.nodes.find((n: Node) => n.id === eventData.itemId);
+          if (nodeData && onNodeClick) {
+            onNodeClick(nodeData);
+          }
+        }
+      });
+
+      graph.on('edge:click', (evt) => {
+        const eventData = evt as { itemId?: string };
+        if (eventData.itemId) {
+          const edgeData = data.edges.find((e: Edge) => e.id === eventData.itemId);
+          if (edgeData && onEdgeClick) {
+            onEdgeClick(edgeData);
+          }
+        }
+      });
+
+      graph.on('node:mouseenter', (evt) => {
+        const eventData = evt as { itemId?: string };
+        if (eventData.itemId) {
+          const nodeData = data.nodes.find((n: Node) => n.id === eventData.itemId);
+          if (nodeData && onNodeHover) {
+            onNodeHover(nodeData);
+          }
+        }
+      });
+
+      graph.on('node:mouseleave', () => {
+        if (onNodeHover) {
+          onNodeHover(null);
+        }
+      });
+    } catch (error) {
+      console.error('Error initializing graph:', error);
+    }
+
+    return () => {
+      if (graphRef.current) {
+        try {
+          graphRef.current.destroy();
+        } catch (error) {
+          console.error('Error destroying graph:', error);
+        }
+        graphRef.current = null;
+      }
+    };
+  }, [
+    height,
+    layout.type,
+    layout.nodeSize,
+    layout.linkDistance,
+    onNodeClick,
+    onEdgeClick,
+    onNodeHover,
+    data,
+  ]);
+
+  useEffect(() => {
+    const handleResize = () => {
+      if (graphRef.current && containerRef.current) {
+        try {
+          graphRef.current.resize(containerRef.current.clientWidth, height);
+        } catch (error) {
+          console.error('Error resizing graph:', error);
+        }
+      }
+    };
+
+    window.addEventListener('resize', handleResize);
+    return () => window.removeEventListener('resize', handleResize);
+  }, [height]);
+
+  return (
+    <div className="relative w-full h-full">
+      <div ref={containerRef} className="w-full h-full" style={{ height: `${height}px` }} />
+      <div className="absolute bottom-4 right-4 bg-white/90 backdrop-blur-sm rounded-lg shadow-lg p-3">
+        <div className="text-xs text-gray-600 mb-2">布局类型: {layout.type}</div>
+        <div className="text-xs text-gray-600">节点: {data.nodes.length} | 边: {data.edges.length}</div>
+      </div>
+    </div>
+  );
+};
+
+export default GraphView;
@@ -0,0 +1,92 @@
+import type { Node } from '../../types/graph';
+
+interface NodePanelProps {
+  node: Node | null;
+  onClose?: () => void;
+}
+
+export const NodePanel = ({ node, onClose }: NodePanelProps) => {
+  if (!node) return null;
+
+  return (
+    <div className="w-80 bg-white border-l border-gray-200 shadow-lg overflow-y-auto">
+      <div className="p-4 border-b border-gray-200 flex justify-between items-center">
+        <h3 className="text-lg font-semibold text-gray-800">节点详情</h3>
+        {onClose && (
+          <button
+            onClick={onClose}
+            className="text-gray-400 hover:text-gray-600 transition-colors"
+          >
+            <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M6 18L18 6M6 6l12 12" />
+            </svg>
+          </button>
+        )}
+      </div>
+
+      <div className="p-4 space-y-4">
+        <div>
+          <div className="text-xs text-gray-500 uppercase tracking-wide mb-1">节点 ID</div>
+          <div className="font-mono text-sm bg-gray-50 p-2 rounded overflow-x-auto">
+            {node.id}
+          </div>
+        </div>
+
+        <div>
+          <div className="text-xs text-gray-500 uppercase tracking-wide mb-1">名称</div>
+          <div className="text-lg font-medium text-gray-800">{node.label}</div>
+        </div>
+
+        {node.type && (
+          <div>
+            <div className="text-xs text-gray-500 uppercase tracking-wide mb-1">类型</div>
+            <div className="inline-block px-3 py-1 bg-purple-100 text-purple-700 rounded-full text-sm">
+              {node.type}
+            </div>
+          </div>
+        )}
+
+        {node.properties && Object.keys(node.properties).length > 0 && (
+          <div>
+            <div className="text-xs text-gray-500 uppercase tracking-wide mb-2">属性</div>
+            <div className="space-y-2">
+              {Object.entries(node.properties).map(([key, value]) => (
+                <div key={key} className="flex justify-between items-start">
+                  <div className="text-sm text-gray-600">{key}</div>
+                  <div className="text-sm font-medium text-gray-800 text-right max-w-[50%] break-all">
+                    {typeof value === 'object' ? JSON.stringify(value) : String(value)}
+                  </div>
+                </div>
+              ))}
+            </div>
+          </div>
+        )}
+
+        {node.style && (
+          <div>
+            <div className="text-xs text-gray-500 uppercase tracking-wide mb-2">样式</div>
+            <div className="space-y-1">
+              {node.style.fill && (
+                <div className="flex items-center space-x-2">
+                  <div className="w-4 h-4 rounded border" style={{ backgroundColor: node.style.fill }} />
+                  <span className="text-sm text-gray-600">填充颜色</span>
+                </div>
+              )}
+              {node.style.stroke && (
+                <div className="flex items-center space-x-2">
+                  <div className="w-4 h-4 rounded border-2" style={{ borderColor: node.style.stroke }} />
+                  <span className="text-sm text-gray-600">边框颜色</span>
+                </div>
+              )}
+              {node.style.lineWidth && (
+                <div className="text-sm text-gray-600">边框宽度: {node.style.lineWidth}px</div>
+              )}
+            </div>
+          </div>
+        )}
+      </div>
+    </div>
+  );
+};
+
+export default NodePanel;
@@ -0,0 +1,96 @@
+import { useState, type ChangeEvent, type KeyboardEvent } from 'react';
+import type { SearchNode } from '../../types/graph';
+
+interface SearchBarProps {
+  onSearch?: (query: string) => void;
+  onNodeSelect?: (nodeId: string) => void;
+  searchResults?: SearchNode[];
+  placeholder?: string;
+}
+
+export const SearchBar = ({
+  onSearch,
+  onNodeSelect,
+  searchResults = [],
+  placeholder = '搜索节点...',
+}: SearchBarProps) => {
+  const [query, setQuery] = useState('');
+  const [showResults, setShowResults] = useState(false);
+
+  const handleInputChange = (e: ChangeEvent<HTMLInputElement>) => {
+    const value = e.target.value;
+    setQuery(value);
+    if (onSearch && value.trim()) {
+      onSearch(value.trim());
+      setShowResults(true);
+    } else {
+      setShowResults(false);
+    }
+  };
+
+  const handleKeyDown = (e: KeyboardEvent<HTMLInputElement>) => {
+    if (e.key === 'Enter') {
+      if (onSearch && query.trim()) {
+        onSearch(query.trim());
+      }
+      setShowResults(false);
+    }
+  };
+
+  const handleNodeClick = (nodeId: string) => {
+    if (onNodeSelect) {
+      onNodeSelect(nodeId);
+    }
+    setShowResults(false);
+    setQuery('');
+  };
+
+  return (
+    <div className="relative w-full max-w-md">
+      <div className="relative">
+        <input
+          type="text"
+          value={query}
+          onChange={handleInputChange}
+          onKeyDown={handleKeyDown}
+          placeholder={placeholder}
+          className="w-full px-4 py-2 pl-10 pr-4 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-purple-500 focus:border-transparent"
+          onFocus={() => setShowResults(!!query.trim() && searchResults.length > 0)}
+          onBlur={() => setTimeout(() => setShowResults(false), 200)}
+        />
+        <svg
+          className="absolute w-5 h-5 text-gray-400 left-3 top-1/2 transform -translate-y-1/2"
+          fill="none"
+          stroke="currentColor"
+          viewBox="0 0 24 24"
+        >
+          <path
+            strokeLinecap="round"
+            strokeLinejoin="round"
+            strokeWidth={2}
+            d="M21 21l-6-6m2-5a7 7 0 11-14 0 7 7 0 0114 0z"
+          />
+        </svg>
+      </div>
+      
+      {showResults && searchResults.length > 0 && (
+        <div className="absolute z-50 w-full mt-2 bg-white border border-gray-200 rounded-lg shadow-lg max-h-64 overflow-y-auto">
+          {searchResults.map((node) => (
+            <div
+              key={node.id}
+              onClick={() => handleNodeClick(node.id)}
+              className="px-4 py-2 hover:bg-purple-50 cursor-pointer border-b border-gray-100 last:border-b-0 transition-colors"
+            >
+              <div className="font-medium text-gray-800">{node.label}</div>
+              {node.type && (
+                <div className="text-xs text-gray-500 mt-0.5">{node.type}</div>
+              )}
+            </div>
+          ))}
+        </div>
+      )}
+    </div>
+  );
+};
+
+export default SearchBar;
@@ -0,0 +1,27 @@
+@import "tailwindcss";
+
+@theme {
+  --color-primary: 250 80% 60%;
+  --color-secondary: 280 70% 55%;
+  --color-accent: 300 80% 65%;
+  
+  --font-sans: system-ui, 'Segoe UI', Roboto, sans-serif;
+  --font-mono: ui-monospace, Consolas, monospace;
+}
+
+* {
+  box-sizing: border-box;
+}
+
+body {
+  margin: 0;
+  font-family: var(--font-sans);
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+#root {
+  width: 100%;
+  height: 100vh;
+  margin: 0;
+}
@@ -0,0 +1,10 @@
+import { StrictMode } from 'react'
+import { createRoot } from 'react-dom/client'
+import './index.css'
+import App from './App.tsx'
+
+createRoot(document.getElementById('root')!).render(
+  <StrictMode>
+    <App />
+  </StrictMode>,
+)
@@ -0,0 +1,160 @@
+import { useState, useCallback, useEffect } from 'react';
+import GraphView from '../components/GraphView/index';
+import SearchBar from '../components/SearchBar/index';
+import NodePanel from '../components/NodePanel/index';
+import type { GraphData, Node, SearchNode, GraphLayoutConfig } from '../types/graph';
+import { graphApi } from '../services/graphApi';
+
+export const KnowledgeGraph = () => {
+  const [graphData, setGraphData] = useState<GraphData>({ nodes: [], edges: [] });
+  const [selectedNode, setSelectedNode] = useState<Node | null>(null);
+  const [hoveredNode, setHoveredNode] = useState<Node | null>(null);
+  const [searchResults, setSearchResults] = useState<SearchNode[]>([]);
+  const [layout, setLayout] = useState<GraphLayoutConfig>({ type: 'force' });
+  const [loading, setLoading] = useState(true);
+
+  const handleSearch = useCallback((query: string) => {
+    const results = graphData.nodes
+      .filter((node: Node) =>
+        node.label.toLowerCase().includes(query.toLowerCase()) ||
+        node.id.toLowerCase().includes(query.toLowerCase())
+      )
+      .map((node: Node) => ({
+        id: node.id,
+        label: node.label,
+        type: node.type,
+        matched: true,
+      }));
+    setSearchResults(results);
+  }, [graphData]);
+
+  const handleNodeSelect = useCallback((nodeId: string) => {
+    const node = graphData.nodes.find((n: Node) => n.id === nodeId);
+    if (node) {
+      setSelectedNode(node);
+    }
+  }, [graphData.nodes]);
+
+  const handleNodeClick = useCallback((node: Node) => {
+    setSelectedNode(node);
+  }, []);
+
+  const handleLayoutChange = useCallback((newLayout: GraphLayoutConfig['type']) => {
+    setLayout({ type: newLayout });
+  }, []);
+
+  useEffect(() => {
+    const loadGraphData = async () => {
+      try {
+        setLoading(true);
+        const data = await graphApi.getData();
+        
+        // 添加一些示例数据，如果 API 返回空数据
+        if (data.nodes.length === 0) {
+          const sampleData: GraphData = {
+            nodes: [
+              { id: '1', label: '人工智能', type: '概念', properties: { importance: 1 } },
+              { id: '2', label: '机器学习', type: '概念', properties: { importance: 0.8 } },
+              { id: '3', label: '深度学习', type: '概念', properties: { importance: 0.7 } },
+              { id: '4', label: '神经网络', type: '概念', properties: { importance: 0.6 } },
+              { id: '5', label: 'TensorFlow', type: '工具', properties: { importance: 0.5 } },
+              { id: '6', label: 'PyTorch', type: '工具', properties: { importance: 0.5 } },
+              { id: '7', label: '自然语言处理', type: '应用', properties: { importance: 0.6 } },
+              { id: '8', label: '计算机视觉', type: '应用', properties: { importance: 0.6 } },
+            ],
+            edges: [
+              { id: 'e1', source: '1', target: '2', label: '包含' },
+              { id: 'e2', source: '2', target: '3', label: '子领域' },
+              { id: 'e3', source: '3', target: '4', label: '基于' },
+              { id: 'e4', source: '3', target: '5', label: '框架' },
+              { id: 'e5', source: '3', target: '6', label: '框架' },
+              { id: 'e6', source: '1', target: '7', label: '应用' },
+              { id: 'e7', source: '1', target: '8', label: '应用' },
+            ],
+          };
+          setGraphData(sampleData);
+        } else {
+          setGraphData(data);
+        }
+      } catch (error) {
+        console.error('Failed to load graph data:', error);
+      } finally {
+        setLoading(false);
+      }
+    };
+
+    loadGraphData();
+  }, []);
+
+  return (
+    <div className="w-full h-screen flex flex-col bg-gray-50">
+      {loading ? (
+        <div className="flex items-center justify-center h-full">
+          <div className="text-lg text-gray-600">加载图谱数据中...</div>
+        </div>
+      ) : (
+        <>
+          <header className="bg-white border-b border-gray-200 px-6 py-4 flex items-center justify-between">
+            <div className="flex items-center space-x-4">
+              <h1 className="text-xl font-semibold text-gray-800">知识图谱</h1>
+              <div className="flex space-x-2">
+                {(['force', 'circular', 'grid', 'radial'] as const).map((layoutType) => (
+                  <button
+                    key={layoutType}
+                    onClick={() => handleLayoutChange(layoutType)}
+                    className={`px-3 py-1 rounded text-sm transition-colors ${
+                      layout.type === layoutType
+                        ? 'bg-purple-600 text-white'
+                        : 'bg-gray-100 text-gray-700 hover:bg-gray-200'
+                    }`}
+                  >
+                    {layoutType}
+                  </button>
+                ))}
+              </div>
+            </div>
+            
+            <div className="flex items-center space-x-4">
+              <SearchBar 
+                onSearch={handleSearch}
+                onNodeSelect={handleNodeSelect}
+                searchResults={searchResults}
+              />
+            </div>
+          </header>
+
+          <div className="flex-1 flex overflow-hidden">
+            <main className="flex-1 bg-white relative">
+              <GraphView
+                data={graphData}
+                layout={layout}
+                onNodeClick={handleNodeClick}
+                onNodeHover={setHoveredNode}
+              />
+              
+              {hoveredNode && (
+                <div className="absolute bottom-4 left-4 bg-white/95 backdrop-blur-sm rounded-lg shadow-lg p-3 max-w-xs">
+                  <div className="font-medium text-gray-800">{hoveredNode.label}</div>
+                  {hoveredNode.type && (
+                    <div className="text-sm text-gray-500">{hoveredNode.type}</div>
+                  )}
+                </div>
+              )}
+            </main>
+
+            {selectedNode && (
+              <aside className="w-80 bg-white border-l border-gray-200">
+                <NodePanel 
+                  node={selectedNode} 
+                  onClose={() => setSelectedNode(null)} 
+                />
+              </aside>
+            )}
+          </div>
+        </>
+      )}
+    </div>
+  );
+};
+
+export default KnowledgeGraph;
@@ -0,0 +1,56 @@
+import axios from 'axios';
+import type { GraphData, Node, Edge } from '../types/graph';
+
+const API_BASE_URL = import.meta.env.VITE_API_BASE_URL || 'http://localhost:3000/api';
+
+const apiClient = axios.create({
+  baseURL: API_BASE_URL,
+  timeout: 10000,
+  headers: {
+    'Content-Type': 'application/json',
+  },
+});
+
+export const graphApi = {
+  async getData(): Promise<GraphData> {
+    try {
+      const response = await apiClient.get<GraphData>('/graph');
+      return response.data;
+    } catch (error) {
+      console.error('Error fetching graph data:', error);
+      return { nodes: [], edges: [] };
+    }
+  },
+
+  async searchNodes(query: string): Promise<Node[]> {
+    try {
+      const response = await apiClient.get<Node[]>(`/search?q=${encodeURIComponent(query)}`);
+      return response.data;
+    } catch (error) {
+      console.error('Error searching nodes:', error);
+      return [];
+    }
+  },
+
+  async getNodeById(id: string): Promise<Node | null> {
+    try {
+      const response = await apiClient.get<Node>(`/nodes/${id}`);
+      return response.data;
+    } catch (error) {
+      console.error('Error fetching node:', error);
+      return null;
+    }
+  },
+
+  async getNeighbors(nodeId: string): Promise<{ nodes: Node[]; edges: Edge[] }> {
+    try {
+      const response = await apiClient.get(`/nodes/${nodeId}/neighbors`);
+      return response.data;
+    } catch (error) {
+      console.error('Error fetching neighbors:', error);
+      return { nodes: [], edges: [] };
+    }
+  },
+};
+
+export default apiClient;
@@ -0,0 +1,47 @@
+export interface Node {
+  id: string;
+  label: string;
+  type?: string;
+  properties?: Record<string, unknown>;
+  x?: number;
+  y?: number;
+  style?: {
+    fill?: string;
+    stroke?: string;
+    radius?: number;
+    lineWidth?: number;
+  };
+}
+
+export interface Edge {
+  id: string;
+  source: string;
+  target: string;
+  label?: string;
+  type?: string;
+  properties?: Record<string, unknown>;
+  style?: {
+    stroke?: string;
+    lineWidth?: number;
+    endArrow?: boolean;
+  };
+}
+
+export interface GraphData {
+  nodes: Node[];
+  edges: Edge[];
+}
+
+export interface GraphLayoutConfig {
+  type: 'force' | 'circular' | 'grid' | 'radial';
+  nodeSize?: number;
+  linkDistance?: number;
+  center?: [number, number];
+}
+
+export interface SearchNode {
+  id: string;
+  label: string;
+  type?: string;
+  matched?: boolean;
+}
@@ -0,0 +1,42 @@
+export const debounce = <T extends (...args: unknown[]) => unknown>(
+  func: T,
+  wait: number
+): ((...args: Parameters<T>) => void) => {
+  let timeout: ReturnType<typeof setTimeout> | null = null;
+  
+  return (...args: Parameters<T>) => {
+    if (timeout) {
+      clearTimeout(timeout);
+    }
+    timeout = setTimeout(() => func(...args), wait);
+  };
+};
+
+export const throttle = <T extends (...args: unknown[]) => unknown>(
+  func: T,
+  limit: number
+): ((...args: Parameters<T>) => void) => {
+  let inThrottle: boolean = false;
+  
+  return (...args: Parameters<T>) => {
+    if (!inThrottle) {
+      func(...args);
+      inThrottle = true;
+      setTimeout(() => (inThrottle = false), limit);
+    }
+  };
+};
+
+export const generateUUID = (): string => {
+  return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, (c) => {
+    const r = (Math.random() * 16) | 0;
+    const v = c === 'x' ? r : (r & 0x3) | 0x8;
+    return v.toString(16);
+  });
+};
+
+export const calculateNodeSize = (importance: number = 1): number => {
+  const baseSize = 40;
+  const multiplier = importance * 20;
+  return baseSize + multiplier;
+};
				`@@ -0,0 +1 @@`
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