library-backend.js

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

let authors = [
  {
    name: 'Robert Martin',
    id: "afa51ab0-344d-11e9-a414-719c6709cf3e",
    born: 1952,
  },
  {
    name: 'Martin Fowler',
    id: "afa5b6f0-344d-11e9-a414-719c6709cf3e",
    born: 1963
  },
  {
    name: 'Fyodor Dostoevsky',
    id: "afa5b6f1-344d-11e9-a414-719c6709cf3e",
    born: 1821
  },
  { 
    name: 'Joshua Kerievsky', // birthyear not known
    id: "afa5b6f2-344d-11e9-a414-719c6709cf3e",
  },
  { 
    name: 'Sandi Metz', // birthyear not known
    id: "afa5b6f3-344d-11e9-a414-719c6709cf3e",
  },
]

/*
 * Saattaisi olla järkevämpää assosioida kirja ja sen tekijä tallettamalla kirjan yhteyteen tekijän nimen sijaan tekijän id
 * Yksinkertaisuuden vuoksi tallennamme kuitenkin kirjan yhteyteen tekijän nimen
*/

let books = [
  {
    title: 'Clean Code',
    published: 2008,
    author: 'Robert Martin',
    id: "afa5b6f4-344d-11e9-a414-719c6709cf3e",
    genres: ['refactoring']
  },
  {
    title: 'Agile software development',
    published: 2002,
    author: 'Robert Martin',
    id: "afa5b6f5-344d-11e9-a414-719c6709cf3e",
    genres: ['agile', 'patterns', 'design']
  },
  {
    title: 'Refactoring, edition 2',
    published: 2018,
    author: 'Martin Fowler',
    id: "afa5de00-344d-11e9-a414-719c6709cf3e",
    genres: ['refactoring']
  },
  {
    title: 'Refactoring to patterns',
    published: 2008,
    author: 'Joshua Kerievsky',
    id: "afa5de01-344d-11e9-a414-719c6709cf3e",
    genres: ['refactoring', 'patterns']
  },  
  {
    title: 'Practical Object-Oriented Design, An Agile Primer Using Ruby',
    published: 2012,
    author: 'Sandi Metz',
    id: "afa5de02-344d-11e9-a414-719c6709cf3e",
    genres: ['refactoring', 'design']
  },
  {
    title: 'Crime and punishment',
    published: 1866,
    author: 'Fyodor Dostoevsky',
    id: "afa5de03-344d-11e9-a414-719c6709cf3e",
    genres: ['classic', 'crime']
  },
  {
    title: 'The Demon ',
    published: 1872,
    author: 'Fyodor Dostoevsky',
    id: "afa5de04-344d-11e9-a414-719c6709cf3e",
    genres: ['classic', 'revolution']
  },
]

const typeDefs = gql`
  type Query {
  }
`

const resolvers = {
  Query: {
  }
}

const server = new ApolloServer({
  typeDefs,
  resolvers,
})

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