const express = require('express')
const { buildSchema } = require('graphql')
const { graphqlHTTP } = require('express-graphql')

const schema = buildSchema(`
  type Account {
    name: String,
    age: Int,
    sex: String,
    department: String
  }
  type Query {
    hello: String,
    userName: String,
    age: Int,
    account: Account
  }
`)

const root = {
  hello: () => 'Hello world!',
  userName: () => 'wcd',
  age: () => 25,
  account: () => {
    return {
      name: 'wcd',
      age: 25,
      sex: 'boy',
      department: 'technical division',
    }
  },
}

const app = express()

app.use(
  '/graphql',
  graphqlHTTP({
    schema: schema,
    rootValue: root,
    graphiql: true,
  })
)

app.listen(3000, () => console.log('Now browse to localhost:3000/graphql'))