import neo4j from "neo4j-driver";
import { QdrantClient } from "@qdrant/js-client-rest";

let neo4jDriver;
let qdrantClient;

/**
 * 初始化并缓存数据库客户端，避免重复创建连接对象。
 */
export const createClients = (env) => {
  if (!neo4jDriver) {
    neo4jDriver = neo4j.driver(
      env.NEO4J_URI,
      neo4j.auth.basic(env.NEO4J_USER, env.NEO4J_PASSWORD)
    );
  }

  if (!qdrantClient) {
    qdrantClient = new QdrantClient({
      url: env.QDRANT_URL,
      apiKey: env.QDRANT_API_KEY
    });
  }

  return { neo4jDriver, qdrantClient };
};