"""GraphQL schema for the demo CoffeeService (POST /graphql)."""

type Query {
  """Returns all coffees."""
  coffees: [Coffee]

  """Returns the coffee with the given id, or null if none exists."""
  coffee(id: Int!): Coffee
}

type Mutation {
  """Adds a new coffee and returns it with its assigned id."""
  addCoffee(name: String!, description: String!): Coffee

  """Updates the name and description of an existing coffee."""
  updateCoffee(id: Int!, name: String!, description: String!): Coffee

  """Deletes the coffee with the given id."""
  deleteCoffee(id: Int!): DeleteCoffeePayload
}

type Coffee {
  id: Int!
  name: String
  description: String
}

type DeleteCoffeePayload {
  success: Boolean!
}