schema.graphql

input LoginInput {
  username: String
  password: String
  clientMutationId: String
}

type LoginPayload {
  viewer: User
  userId: ID
  clientMutationId: String
}

# ...
type Mutation {
  signup(input: SignupInput!): SignupPayload
  login(input: LoginInput!): LoginPayload
  logout: User
}

# An object with an ID
interface Node {
  # The id of the object.
  id: ID!
}

# Information about pagination in a connection.
type PageInfo {
  # When paginating forwards, are there more items?
  hasNextPage: Boolean!

  # When paginating backwards, are there more items?
  hasPreviousPage: Boolean!

  # When paginating backwards, the cursor to continue.
  startCursor: String

  # When paginating forwards, the cursor to continue.
  endCursor: String
}

# Post fetched from an external source
type Post implements Node {
  # The ID of an object
  id: ID!
  postId: String
  source: String
  author: String
  title: String
  content: String
  link: String
  time: String
}

# A connection to a list of items.
type PostConnection {
  # Information to aid in pagination.
  pageInfo: PageInfo!

  # A list of edges.
  edges: [PostEdge]
}

# An edge in a connection.
type PostEdge {
  # The item at the end of the edge
  node: Post

  # A cursor for use in pagination
  cursor: String!
}

type Query {
  viewer: User
  post(postId: ID): Post
  posts: [Post]

  # Fetches an object given its ID
  node(
    # The ID of an object
    id: ID!
  ): Node
  users: [User]
}

input SignupInput {
  email: String
  username: String
  password: String
  clientMutationId: String
}

type SignupPayload {
  viewer: User
  clientMutationId: String
}

# A registered user of the application
type User implements Node {
  # The ID of an object
  id: ID!

  # id of user in db
  userId: String

  # email of user
  email: String

  # username of user in db
  username: String

  # Posts listed under the user
  posts(after: String, first: Int, before: String, last: Int): PostConnection
}