const typeDefs = `
    type Book {
        title: String!
        author: Author!
        published: Int!
        id: ID!
        genres: [String]!
    }

    type Author {
        name: String!
        id: ID!
        born: Int
        bookCount: Int!
    }

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

    type Token {
        value: String!
    }

    type Query {
        bookCount: Int!
        authorCount: Int!
        allBooks(author: String, genre: String): [Book!]!
        allAuthors: [Author!]!
        me: User
    }

    type Mutation {
        addBook(
            title: String!
            published: Int!
            author: String!
            genres: [String!]!
        ): Book!
        editAuthor(
            name: String!
            setBornTo: Int!
        ): Author
        createUser(
            username: String!
            favouriteGenre: String!
        ): User
        login(
            username: String!
            password: String!
        ): Token
	}

	type Subscription {
		bookAdded: Book!
	}
`

module.exports = typeDefs