yotsuba

defmodule Yotsuba.Middleware.ResponseMiddleware do
  @behaviour Tesla.Middleware

  @moduledoc """
  Custom middleware that extracts the body from a successful response or converts the body
  to an `{:error, reason}` tuple in case the request failed.
  """

  def call(env, next, _options) do
    env
    |> Tesla.run(next)
    |> handle_response()
  end

  defp handle_response(next = %Tesla.Env{status: 200}) do
    next.body
  end

  defp handle_response(_next = %Tesla.Env{status: 404}) do
    {:error, "Not found"}
  end

  defp handle_response(_next) do
    {:error, "Error making request"}
  end
end