defmodule PreDotDn.DevServer do
  use Plug.Router

  plug(Plug.Logger)
  plug(:rewrite_dirs)
  plug(Plug.Static, at: "", from: "priv/static")

  get "/health" do
    conn |> resp(200, "ok") |> halt()
  end

  plug(:match)
  plug(:dispatch)

  def rewrite_dirs(conn, _) do
    is_directory =
      case Enum.reverse(conn.path_info) do
        [] ->
          true

        [last_segment | _] ->
          !String.contains?(last_segment, ".")
      end

    if is_directory do
      request_path = conn.request_path <> "index.html"
      path_info = conn.path_info ++ ["index.html"]

      %{conn | path_info: path_info, request_path: request_path}
    else
      conn
    end
  end
end