let hyperdrive = Hyperdrive()

hyperdrive.enter("https://polls.apiblueprint.org/") { result in
  switch result {
    case .Success(let representor):
      print("The API has offered us the following transitions: \(representor.transitions)")

    case .Failure(let error):
      print("Unfortunately there was an error: \(error)")
  }
}

if let questions = representor.transitions["questions"] {
  print("Our API has a transition to a questions resource.")
} else {
  print("Looks like this API doesn’t support questions, or " +
          "the feature was removed.")
}

hyperdrive.request(questions) { result in
  switch result {
    case .Success(let representor):
      print("We’ve received a representor for the questions.")

    case .Failure(let error):
      print("There was a problem retreiving the questions: \(error)")
  }
}

if let questions = representor.representors["questions"] {
  // Our representor includes a collection of Question resources.
  // Let’s use map to call viewQuestion for each one
  map(questions, viewQuestion)
} else {
  print("Looks like there are no questions yet.")
  print("Perhaps the API offers us the ability to create a question?")
}

func viewQuestion(question:Representor<HTTPTransition>) {
  print(question.attributes["question"])

  if let choices = question.representors["choices"] {
    for choice in choices {
      let text = choice.attributes["choice"]
      let votes = choice.attributes["votes"]
      print('-> \(text) (\(votes))')
    }
  } else {
    print("-> This question does not have any choices.")
  }
}

if let delete = question.transitions["delete"] {
  // We can perform this transition with Hyperdrive
  hyperdrive.request(delete)
} else {
  print("The API doesn’t offer us the ability to delete a question.")
  print("Let’s gracefully handle the lack of this feature and " +
          "remove deletion from our user interface.")
}

if let vote = choice.transitions["vote"] {
  hyperdrive.request(vote)
}

if let create = questions.transitions["create"] {
  let attributes = [
    "question": "Favourite programming language?",
    "choices": [
      "Swift",
      "Python",
      "Ruby",
    ]
  ]

  hyperdrive.request(create, attributes)
} else {
  // Our API doesn’t allow us to create a question. We should remove the
  // ability to create a question in our user interface.
  // This transition may only be available to certain users.
}

create.attributes