feat: add neo4j and prompt and prompt-graph

src/routes/prompt-graph/d3/get-graph.ts

@@ -0,0 +1,73 @@
+import { getSession } from '@/app.ts';
+export async function fetchData() {
+  const session = getSession();
+  try {
+    const query = `MATCH (n)
+OPTIONAL MATCH (n)-[r]->(m)
+RETURN n, r, m`;
+    const queryConnect = 'MATCH (n)-[r]->(m) RETURN n, r, m LIMIT 25';
+    const result = await session.run(query);
+
+    const graphData = { nodes: [], links: [] };
+    const nodeMap = new Map();
+    // n和n的关系用 relatedPrompts 进行关联
+    result.records.forEach((record) => {
+      const node = record.get('n');
+      const relation = record.get('r');
+      const target = record.get('m');
+      if (!nodeMap.has(node.identity)) {
+        nodeMap.set(node.identity, {
+          id: node.identity.toString(),
+          label: node.labels[0],
+          properties: node.properties,
+        });
+        graphData.nodes.push(nodeMap.get(node.identity));
+      }
+
+      if (relation && !nodeMap.has(relation.identity)) {
+        nodeMap.set(relation.identity, {
+          id: relation.identity.toString(),
+          label: relation.type,
+          properties: relation.properties,
+        });
+        graphData.nodes.push(nodeMap.get(relation.identity));
+      }
+
+      if (target && !nodeMap.has(target.identity)) {
+        nodeMap.set(target.identity, {
+          id: target.identity.toString(),
+          label: target.labels[0],
+          properties: target.properties,
+        });
+        graphData.nodes.push(nodeMap.get(target.identity));
+      }
+
+      if (relation) {
+        graphData.links.push({
+          source: node.identity.toString(),
+          target: relation.identity.toString(),
+          type: relation.type,
+          properties: relation.properties,
+        });
+      }
+
+      if (target) {
+        graphData.links.push({
+          source: node.identity.toString(),
+          target: target.identity.toString(),
+          type: 'RELATED_TO',
+          properties: {},
+        });
+      }
+    });
+
+    return graphData;
+  } finally {
+    await session.close();
+  }
+}
+
+// fetchData().then((graphData) => {
+//   console.log(graphData); // 用于验证获取的数据
+//   drawGraph(graphData); // 调用 D3 绘制函数
+// });