#281 禁則文字の制定とサニタイズ

class << self
  def apply!
    TagName.find_each do |tn|
      name = sanitise(tn.name)
      next if name == tn.name

      tn.update_columns(name:, updated_at: Time.current)
    end
  end

  private

  def sanitise name
    order(:priority).reduce(name.dup) do |value, tnsr|
      value.gsub(Regexp.new(tnsr.source_pattern), tnsr.replacement)
    end
  end
end

tag_names と wiki_pages も Discardable にしたい．