apollo-graphql-api

index.js

const { gql } = require('apollo-server-koa')
const UserType = require('./types/user')
const PostType = require('./types/post')

const RootQuery = gql`
  type Query {
    getUser(id: Int!): User
    getPostsByUserId(user_id: Int!): [Post!]
  }
`;

const RootMutation = `
    type Mutation {
          addUser(username: String!, password: String!, fullname: String, email: String, phone: String): String
          addPost(user_id: Int!, title: String!, content: String!): String
          updatePost(id: Int!, title: String, content: String): Boolean
    }
`;

const SchemaDefinition = `
  schema {
    query: Query
    mutation: Mutation
  }
`;

module.exports = [
    SchemaDefinition, RootQuery, RootMutation, UserType, PostType
];

post.js

module.exports = `type Post {
    title: String
    content: String
  }`

user.js

module.exports = `type User {
    username: String
    fullName: String
    phone: String
    email: String
  }`