module EnjuInventory
  module EnjuItem
    extend ActiveSupport::Concern

    included do
      has_many :inventories, dependent: :destroy
      has_many :inventory_files, through: :inventories
      searchable do
        integer :inventory_file_ids, multiple: true
      end

      def self.inventory_items(inventory_file, mode = 'not_on_shelf')
        item_ids = Item.pluck(:id)
        inventory_item_ids = inventory_file.items.pluck('items.id')
        case mode
        when 'not_on_shelf'
          Item.where(id: (item_ids - inventory_item_ids))
        when 'not_in_catalog'
          Item.where(id: (inventory_item_ids - item_ids))
        end
      rescue
        nil
      end
    end
  end
end