如何使用Neo4j和GraphQL将创建时的`$jwt.sub`绑定到属性？

type User {
  id: ID!
  username: String!
  email: String!
}

type Mutation {
  createUser(input: CreateUserInput!): User!
}

input CreateUserInput {
  username: String!
  email: String!
}

const { ApolloServer, gql } = require('apollo-server');
const neo4j = require('neo4j-driver');

// 假设已经验证了JWT并提取了$jwt.sub
const jwtSub = '用户的唯一ID';

const typeDefs = gql`
  // ... 上面的schema ...
`;

const resolvers = {
  Mutation: {
    createUser: async (_, { input }, { driver }) => {
      const session = driver.session();
      try {
        const result = await session.run(
          `
            CREATE (u:User {id: $id, username: $username, email: $email})
            RETURN u
          `,
          { id: jwtSub, username: input.username, email: input.email }
        );
        return result.records[0].get('u');
      } finally {
        await session.close();
      }
    },
  },
};

const driver = neo4j.driver('bolt://localhost:7687', neo4j.auth.basic('username', 'password'));
const server = new ApolloServer({ typeDefs, resolvers, context: () => ({ driver }) });

server.listen().then(({ url }) => {
  console.log(`🚀 Server ready at ${url}`);
});