sale.rb

# Customer Signs up
#   $100 Advanced (Product)
#    $50 Minutes  (Component)
#
#   -$10 Coupon One (Single Use)
#   -$20 Coupon Two (Multi Use)

Sale.new(
  sale_amount_in_cents: 150_00,
  discount_amount_in_cents: -30_00,
  total_in_cents: 120_00,
  ...
  lines: [],
  ...
  discounts: [
    {
      id: coupon_one.id,
      type: "single-use",
      name: "$10 OFF NOW",
      product_id: advanced.id,
      component_id: 0, # a zero for component_id means this is a baseline, setup, one-time, etc charge
      discount_amount_in_cents: -8_00,
    },
    {
      id: coupon_one.id,
      type: "single-use",
      name: "$10 OFF NOW",
      product_id: advanced.id,
      component_id: minutes.id,
      discount_amount_in_cents: -2_00
    },
    {
      id: coupon_two.id,
      type: "multi-use",
      name: "$20 OFF BLACK FRIDAY",
      product_id: advanced.id,
      component_id: 0, # a zero for component_id means this is a baseline, setup, one-time, etc charge
      discount_amount_in_cents: -16_00
    },
    {
      id: coupon_two.id,
      type: "multi-use",
      name: "$20 OFF BLACK FRIDAY",
      product_id: advanced.id,
      component_id: minutes.id,
      discount_amount_in_cents: -4_00
    }
  ]
)