defmodule Desktop.Endpoint do
  @doc false
  defmacro __using__(opts) do
    {scheme, opts} = Keyword.pop(opts, :desktop_scheme, :http)

    quote do
      use Phoenix.Endpoint, unquote(opts)
      defoverridable url: 0

      def url do
        url = super()
        scheme = unquote(scheme)

        case Keyword.get(config(scheme), :port, 0) do
          0 -> String.replace(url, ":0", ":#{get_dynamic_port(scheme)}")
          _port -> url
        end
      end

      if Version.match?(:phoenix |> Application.spec(:vsn) |> List.to_string(), "~> 1.7.10") do
        def get_dynamic_port(scheme) do
          {:ok, {_ip, port}} = server_info(scheme)
          port
        end
      else
        # Supports only cowboy adapter for phoenix
        def get_dynamic_port(scheme) do
          ref = Module.safe_concat(__MODULE__, scheme |> Atom.to_string() |> String.upcase())
          :ranch.get_port(ref)
        end
      end
    end
  end
end