defmodule Hologram.Page do
  @default_layout Application.compile_env!(:hologram, :default_layout)

  defmacro __using__(_) do
    quote do
      require Hologram.Page

      import Hologram.Page
      import Hologram.Router, only: [static_path: 1]
      import Hologram.Runtime.Commons, only: [sigil_H: 2]
      import Map, only: [put: 3]

      alias Hologram.Runtime.JS
      alias Hologram.UI.Link

      def is_page?, do: true

      def layout do
        if Keyword.has_key?(__MODULE__.__info__(:functions), :custom_layout) do
          apply(__MODULE__, :custom_layout, [])
        else
          unquote(@default_layout)
        end
      end
    end
  end

  defmacro layout(module) do
    quote do
      def custom_layout do
        unquote(module)
      end
    end
  end

  defmacro route(path) do
    quote do
      def route do
        unquote(path)
      end
    end
  end
end