type List {
  id: ID!
  title: String!
  tasks: [Task]
  user: User!
}

"""
Task or todo item.
"""
type Task {
  id: ID!
  title: String!
  description: String,
  completed: Boolean!
  user: User!
  list: List!
}

"""
User type; owner of lists and tasks
"""
type User {
  username: String! @bb_primaryKey
  name: String
  tasks: [Task]
  lists: [List]
}


type Query {

  """
  Get a user, this will be used to get the current user as well as the user's lists and tasks.
  """
  getUser(
    username: String!
  ): User @bb_resolver(_type: select, _object: User, _filter: { username: { _eq: "$username" } })
  
}

type Mutation {

  createList(
    title: String!
    user: User! # username needs to be specified as it's non-nullable
  ): List @bb_resolver(_type: insert, _object: List, _fields: { title: "$title", user: "$user" })

  createTask(
    title: String!,
    description: String,
    completed: Boolean!, # default not implemented yet, this needs to be added as it's non-nullable 
    list: List! # list needs to be specified as it's non-nullable 
    user: User! # username needs to be specified as it's non-nullable
  ): Task @bb_resolver(_type: insert, _object: Task, _fields: { title: "$title", description: "$description", completed: "$completed", list: "$list", user: "$user" })

  updateTask(
    id: ID!,
    title: String,
    description: String,
    completed: Boolean,
    list: List
  ): Task @bb_resolver(_type: update, _object: Task, _filter: { id: { _eq: "$id" } }, _fields: { title: "$title", description: "$description", completed: "$completed", list: "$list" })

  deleteTask(id: ID!): Task @bb_resolver(_type: delete, _object: Task, _filter: { id: { _eq: "$id" } })

}