require 'active_admin/component'

module ActiveAdmin
  module BatchActions

    class BatchActionSelector < ActiveAdmin::Component
      builder_method :batch_action_selector

      # Build a new batch actions selector
      #
      # @param [Array] batch_actions An array of batch actions
      def build(batch_actions)
        @batch_actions = Array(batch_actions)
        @drop_down = build_drop_down
      end

      # We don't want to wrap the action list (or any other children) in
      # an unecessary div, so instead we just return the children
      def to_s
        children.to_s
      end

      private

      def build_drop_down
        dropdown_menu I18n.t("active_admin.batch_actions.button_label"),
                      class: "batch_actions_selector dropdown_menu",
                      button: { class: "disabled" } do
          batch_actions_to_display.each do |batch_action|
            confirmation_text = render_or_call_method_or_proc_on(self, batch_action.confirm)

            options = {
              :class         => "batch_action",
              "data-action"  => batch_action.sym,
              "data-confirm" => confirmation_text,
              "data-inputs"  => render_in_context(self, batch_action.inputs).to_json
            }

            default_title = render_or_call_method_or_proc_on(self, batch_action.title)
            title = I18n.t("active_admin.batch_actions.labels.#{batch_action.sym}", default: default_title)
            label = I18n.t("active_admin.batch_actions.action_label", title: title)

            item label, "#", options
          end
        end
      end

      # Return the set of batch actions that should be displayed
      def batch_actions_to_display
        @batch_actions.select do |batch_action|
          call_method_or_proc_on(self, batch_action.display_if_block)
        end
      end

    end
  end
end