Split adding URL to private into separate module

[byjpr]

In Enron I have a module (EnronWeb.Plug.ResourceFromJWT) which takes the URL from JWT Claims and puts it into a private key of it's own. It may make more sense to split it out in the public version of this plug too.

defmodule EnronWeb.Plug.ResourceFromJWT do
  @moduledoc """
  Loads Shop from JWT
  """
  import Plug.Conn

  @doc false
  def init(opts), do: opts

  @doc false
  def call(%{private: %{shop_origin_type: :jwt}} = conn, _config) do
    conn
    |> put_private(:enron_shop_name, jwt_shopify_url(conn))
  end

  def call(conn, _config), do: conn

  defp jwt_shopify_url(conn),
    do: conn.private[:shopify_jwt_claims] |> Map.fetch!("dest") |> String.replace("https://", "")
end