frenzy/lib/frenzy_web/views/feed_view.ex

defmodule FrenzyWeb.FeedView do
  use FrenzyWeb, :view
  alias Frenzy.Feed

  @spec feed_site_url(feed :: Feed.t()) :: String.t()
  def feed_site_url(%Feed{site_url: site_url}) when is_binary(site_url) do
    site_url
  end

  def feed_site_url(%Feed{feed_url: feed_url}) do
    URI.merge(feed_url, "/") |> to_string()
  end
end