module ApplicationHelperPatch
  def self.included(base) # :nodoc:
    base.send(:include, InstanceMethods)
  end

  module InstanceMethods
    # To hide or not to hide.
    def sp_css_hide(name)
      return sp_can_view(name) ? name: "#{name} #{SitePen::CSS_HIDE_FIELD}"
    end

    # To view or not to view.
    def sp_can_view(name)
      # Admins can view everything
      return name if User.current.admin?

      # If there is a permission and the user can't do it, hide it
      perm = "view_#{name}".to_sym
      if Redmine::AccessControl.permission(perm)
        if !User.current.allowed_to?(perm, @project, :global => true)
          return nil
        end
      end

      # Otherwise, let them see it
      return name
    end
  end
end