module RailsAdmin
  module Config
    module Actions
      class BulkDelete < RailsAdmin::Config::Actions::Base
        RailsAdmin::Config::Actions.register(self)
        
        register_instance_option :collection do
          true
        end
                
        register_instance_option :http_methods do
          [:post, :delete]
        end
        
        register_instance_option :controller do
          Proc.new do

            if request.post? # BULK DELETE
              
              @objects = list_entries(@model_config, :destroy)
              not_found and return if @objects.empty?

              render @action.template_name

            elsif request.delete? # BULK DESTROY
              
              @objects = list_entries(@model_config, :destroy)
              processed_objects = @abstract_model.destroy(@objects)

              destroyed = processed_objects.select(&:destroyed?)
              not_destroyed = processed_objects - destroyed
              
              destroyed.each do |object|
                @auditing_adapter && @auditing_adapter.delete_object("Destroyed #{@model_config.with(:object => object).object_label}", object, @abstract_model, _current_user)
              end                   

              flash[:success] = t("admin.flash.successful", :name => pluralize(destroyed.count, @model_config.label), :action => t("admin.actions.delete.done")) unless destroyed.empty?
              flash[:error] = t("admin.flash.error", :name => pluralize(not_destroyed.count, @model_config.label), :action => t("admin.actions.delete.done")) unless not_destroyed.empty?

              redirect_to back_or_index
              
            end
          end
        end
        
        register_instance_option :authorization_key do
          :destroy
        end
        
        register_instance_option :bulkable? do
          true
        end
      end
    end
  end
end