defmodule Mix.Tasks.Workshop.Scratch do
  use Mix.Task

  @spec run(OptionParser.argv) :: :ok
  def run(argv) do
    Workshop.start([], [])
    {_opts, _, _} = OptionParser.parse(argv, switches: [system: :boolean])


    IO.inspect Workshop.Exercises.list_by_weight!
  end
end

# def fast_forward_to_first_non_passing do
#   sandbox = File.ls!(Workshop.Session.get(:folder))
#   state = %{exercises: Exercises.list!,
#             state: Workshop.State.get(:exercises, [])}

#   {checked_out, remaining} = find_checked_out_and_non_checked_out(state.exercises, sandbox)

#   Workshop.State.update :exercises, Workshop.State.get(:exercises, [])
#   |> update_exercises(checked_out, fn state, exercise_mod ->
#     identifier = Exercise.get_identifier(exercise_mod)
#     current_state = Keyword.get(state, identifier, [])
#     {identifier, Keyword.put(current_state, :status, :in_progress)}
#   end, state)

#   Workshop.State.update :exercises, Workshop.State.get(:exercises, [])
#   |> update_exercises(remaining, fn state, exercise_mod ->
#     identifier = Exercise.get_identifier(exercise_mod)
#     current_state = Keyword.get(state, identifier, [])
#     {identifier, Keyword.put(current_state, :status, :not_started)}
#   end, state)

#   Workshop.State.persist!
# end

# def update_exercises(state, exercises, fun, opts) do
#   name_map = create_name_map(opts.exercises)

#   exercises
#   |> Stream.map(&(elem(&1, 1)))
#   |> Stream.map(&(Map.get(name_map, &1)))
#   |> Stream.map(&Exercise.load/1)
#   |> Stream.map(&(fun.(state, &1)))
#   |> Enum.to_list
# end

# def mark_as_not_checked_out(state, exercises, opts) do
#   name_map = create_name_map(opts.exercises)

#   exercises
#   |> Stream.map(&(elem(&1, 1)))
#   |> Stream.map(&(Map.get(name_map, &1)))
#   |> Stream.map(&Exercise.load/1)
#   |> Stream.map(fn exercise_mod ->
#     identifier = Exercise.get_identifier(exercise_mod)
#     current_state = Keyword.get(state, identifier, [])
#     {identifier, Keyword.put(current_state, :status, :not_started)}
#   end)
#   |> Enum.to_list
# end