type Query {
  viewer(after: String, before: String, first: Int, last: Int): Viewer!
  node(id: ID!): Node
}

type Viewer {
  allBlogPosts(after: String, before: String, first: Int, last: Int): BlogPostConnection!
}

interface Node {
  id: ID!
}

type BlogPostConnection {
  pageInfo: PageInfo!
  edges: [BlogPostEdge]
}

type PageInfo {
  hasNextPage: Boolean!
  hasPreviousPage: Boolean!
  startCursor: String
  endCursor: String
}

type BlogPostEdge {
  node: BlogPost!
  cursor: String!
}

type BlogPost implements Node {
  content: String!
  id: ID!
  title: String!
}