Get astronauts in space right now

space.ex

defmodule Space do
  @moduledoc """
  Documentation for Space.
  """

  @doc """
  Hello world.

  ## Examples

      iex> Space.hello()
      :world

  """
  def hello do
    :world
  end

  @url 'http://api.open-notify.org/astros.json'

  def get_astros() do
    with {:ok, {{'HTTP/1.1', 200, 'OK'}, _headers, body}} <-
           :httpc.request(:get, {@url, []}, [], []),
         {:ok, json} <- Jason.decode(body),
         {:ok, people} <- parse_result(json) do
      print_table(people)
    end
  end

  defp parse_result(%{"message" => "success", "people" => people}) when is_list(people) do
    sorted_people =
      people
      |> Enum.map(fn %{"name" => name} = person ->
        [first, last] = String.split(name, " ", parts: 2)
        %{"first_name" => first, "last_name" => last, "craft" => person["craft"]}
      end)
      |> Enum.sort_by(fn %{"last_name" => name} -> name end)

    {:ok, sorted_people}
  end

  defp parse_result(other) do
    {:error, "Bad response, #{inspect(other)}"}
  end

  defp print_table(people) do
    IO.puts("There are #{length(people)} people in space right now.")

    Scribe.print(people, data: ["last_name", "first_name", "craft"])
  end
end