defmodule Porfiry.Quizzes do
  defstruct pid: 0, scheduled?: false

  def start_link do
    Agent.start_link(fn -> %{} end, name: __MODULE__)
  end

  @doc "Returns all saved quizzes."
  def get_quizzes do
    Agent.get(__MODULE__, &(&1))
  end

  @doc "Returns a specific quiz by `quiz_id`."
  def get_quiz(quiz_id) do
    Agent.get(__MODULE__, &Map.get(&1, quiz_id))
  end

  @doc "Adds a new quiz using `quiz_id` as it's key."
  def add_quiz(quiz_id) do
    Agent.update(__MODULE__, &Map.put(&1, quiz_id, %Quizzes{}))
  end

  @doc "Deletes a specific quiz by `quiz_id`."
  def delete_quiz(quiz_id) do
    Agent.update(__MODULE__, &Map.delete(&1, quiz_id))
  end

  @doc "Sets the `scheduled?` key of a quiz to `true`."
  def schedule_quiz(quiz_id) do
    IO.inspect quiz_id
    Agent.update(__MODULE__, &(put_in &1[quiz_id].scheduled?, true))
  end

  @doc "Sets the `scheduled?` key of a quiz to `false`."
  def unschedule_quiz(quiz_id) do
    Agent.update(__MODULE__, &(put_in &1[quiz_id].scheduled?, false))
  end
end