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63 lines
2.0 KiB
Ruby
63 lines
2.0 KiB
Ruby
# frozen_string_literal: true
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# A single line inside an invoice. Can be a subscription or a reservation
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class InvoiceItem < Footprintable
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belongs_to :invoice
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has_one :invoice_item, dependent: :destroy # associates invoice_items of an invoice to invoice_items of an Avoir
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has_one :payment_gateway_object, as: :item, dependent: :destroy
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has_one :chained_element, as: :element, dependent: :restrict_with_exception
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belongs_to :object, polymorphic: true
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after_create :chain_record
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after_update :log_changes
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delegate :footprint, to: :chained_element
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def amount_after_coupon
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# deduct coupon discount
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coupon_service = CouponService.new
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total_without_coupon = coupon_service.invoice_total_no_coupon(invoice)
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coupon_service.ventilate(total_without_coupon, amount, invoice.coupon)
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end
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# return the item amount, coupon discount deducted, if any, and VAT excluded, if applicable
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def net_amount
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# deduct VAT
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vat_service = VatHistoryService.new
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vat_rate = vat_service.invoice_item_vat(self)
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Rational(amount_after_coupon / ((vat_rate / 100.00) + 1)).round.to_f
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end
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# return the VAT amount for this item
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def vat
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amount_after_coupon - net_amount
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end
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# return invoice item type (Machine/Training/Space/Event/Subscription/OrderItem) used to determine the VAT rate
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def invoice_item_type
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if object_type == Reservation.name
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object.try(:reservable_type) || ''
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elsif [Subscription.name, OfferDay.name].include? object_type
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Subscription.name
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elsif object_type == StatisticProfilePrepaidPack.name
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object.prepaid_pack.priceable_type
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elsif object_type == OrderItem.name
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Product.name
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else
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''
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end
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end
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private
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def log_changes
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return if Rails.env.test?
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return unless changed?
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Rails.logger.warn "InvoiceItem update triggered [ id: #{id}, invoice reference: #{invoice.reference} ]\n" \
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"---------- changes ----------\n#{changes}\n---------------------------------"
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end
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end
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