module Workarea
  module Metrics
    class SegmentByDay
      include ByDay

      field :segment_id, type: String
      field :orders, type: Integer, default: 0
      field :returning_orders, type: Integer, default: 0
      field :customers, type: Integer, default: 0
      field :units_sold, type: Integer, default: 0
      field :discounted_units_sold, type: Integer, default: 0
      field :merchandise, type: Float, default: 0.0
      field :shipping, type: Float, default: 0.0
      field :discounts, type: Float, default: 0.0
      field :tax, type: Float, default: 0.0
      field :revenue, type: Float, default: 0.0
      field :cancellations, type: Integer, default: 0
      field :units_canceled, type: Integer, default: 0
      field :refund, type: Float, default: 0.0
      field :sessions, type: Integer, default: 0

      index(segment_id: 1, reporting_on: 1)
      scope :by_segment, ->(id) { where(segment_id: id) }

      def average_order_value
        return nil if orders.zero?
        revenue / orders.to_f
      end
    end
  end
end