require 'rails_admin/config/fields/group'

module RailsAdmin
  module Config
    module HasGroups
      # Accessor for a group
      #
      # If group with given name does not yet exist it will be created. If a
      # block is passed it will be evaluated in the context of the group
      def group(name, &block)
        group = parent.groups.find {|g| name == g.name }
        group ||= (parent.groups << RailsAdmin::Config::Fields::Group.new(self, name)).last
        group.tap{|g| g.section = self}.instance_eval &block if block
        group
      end

      # Reader for groups that are marked as visible
      def visible_groups
        parent.groups.map {|f| f.section = self; f.with(bindings) }.select(&:visible?).select{|g| g.visible_fields.present?}
      end
    end
  end
end