type User {
  id: ID!
  name: String!
  email: String!
  isActive: Boolean!
  createdAt: String!
  posts: [Post!]!
}

type Post {
  id: ID!
  title: String!
  content: String!
  author: User!
  publishedAt: String!
}

type Query {
  user(id: ID!): User
  users(page: Int = 1, pageSize: Int = 10): [User!]!
  post(id: ID!): Post
  posts(page: Int = 1, pageSize: Int = 10): [Post!]!
}

type Mutation {
  createUser(name: String!, email: String!, isActive: Boolean = true): User!
  updateUser(id: ID!, name: String, email: String, isActive: Boolean): User!
  deleteUser(id: ID!): Boolean!
  createPost(title: String!, content: String!, authorId: ID!): Post!
}

type Subscription {
  userCreated: User!
  postCreated: Post!
}