defmodule NLdoc.Validation.Rules.NoUnderline do
  @moduledoc """
  This rule validates that the style underline was not used on a Text.
  """

  alias NLdoc.Spec.{Link, Text}
  alias NLdoc.Validation.Severity

  use NLdoc.Validation.Rule,
    severity: Severity.warning(),
    rule: "no-underline",
    ruleset: "https://validation.spec.nldoc.nl/",
    # @TODO set `ruleset_version` to a real version
    ruleset_version: "unknown",
    validates: [Link, Text]

  @impl true
  def valid?(%{styling: styling}, _),
    do: not Enum.member?(styling, :underline)
end