defmodule SyntropyWeb.Layouts do
  use SyntropyWeb, :html

  embed_templates "layouts/*"

  @local_platform_url "http://127.0.0.1:3103"

  def platform_url(path \\ "/") do
    base_url()
    |> append_path(path)
  end

  def operator_nav_class(assigns, path) do
    if current_path(assigns) == path do
      "operator-nav-link operator-nav-link--active"
    else
      "operator-nav-link"
    end
  end

  defp current_path(assigns) do
    cond do
      is_binary(assigns[:current_path]) ->
        assigns.current_path

      match?(%{request_path: request_path} when is_binary(request_path), assigns[:conn]) ->
        assigns.conn.request_path

      true ->
        current_path_from_live_view(assigns[:socket])
    end
  end

  defp current_path_from_live_view(%{view: SyntropyWeb.LatticeLive}), do: "/"
  defp current_path_from_live_view(%{view: SyntropyWeb.TasksLive}), do: "/tasks"
  defp current_path_from_live_view(%{view: SyntropyWeb.HistoryLive}), do: "/history"
  defp current_path_from_live_view(%{view: SyntropyWeb.AgentLive}), do: "/"
  defp current_path_from_live_view(_socket), do: nil

  defp base_url do
    configured =
      :syntropy
      |> Application.get_env(SyntropyWeb.Navigation, [])
      |> Keyword.get(:platform_url)

    cond do
      is_binary(configured) and String.trim(configured) != "" ->
        configured

      Application.get_env(:syntropy, :environment, :dev) in [:dev, :test] ->
        @local_platform_url

      true ->
        nil
    end
  end

  defp append_path(nil, _path), do: nil

  defp append_path(url, path) do
    url
    |> String.trim_trailing("/")
    |> Kernel.<>(path)
  end
end