feat: Totals calculation (#6980)
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Carlos R. L. Rodrigues authored and 
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@@ -0,0 +1,637 @@
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import { decorateCartTotals } from "../../totals"
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describe("Total calculation", function () {
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it("should calculate carts with items + taxes", function () {
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const cart = {
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items: [
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{
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unit_price: 30,
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quantity: 2,
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tax_lines: [
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{
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rate: 10,
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},
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],
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},
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{
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unit_price: 5,
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quantity: 1,
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tax_lines: [
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{
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rate: 50,
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},
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],
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},
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],
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}
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const serialized = JSON.parse(JSON.stringify(decorateCartTotals(cart)))
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expect(serialized).toEqual({
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items: [
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{
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unit_price: 30,
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quantity: 2,
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tax_lines: [
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{
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rate: 10,
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total: 6,
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subtotal: 6,
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},
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],
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subtotal: 60,
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total: 66,
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original_total: 66,
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discount_total: 0,
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discount_tax_total: 0,
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tax_total: 6,
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original_tax_total: 6,
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},
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{
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unit_price: 5,
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quantity: 1,
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tax_lines: [
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{
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rate: 50,
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total: 2.5,
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subtotal: 2.5,
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},
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],
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subtotal: 5,
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total: 7.5,
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original_total: 7.5,
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discount_total: 0,
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discount_tax_total: 0,
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tax_total: 2.5,
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original_tax_total: 2.5,
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},
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],
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total: 73.5,
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subtotal: 65,
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tax_total: 8.5,
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discount_total: 0,
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discount_tax_total: 0,
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item_total: 73.5,
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item_subtotal: 65,
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item_tax_total: 8.5,
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original_total: 73.5,
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original_tax_total: 8.5,
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original_item_subtotal: 65,
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original_item_total: 73.5,
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original_item_tax_total: 8.5,
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})
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})
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it("should calculate carts with items + taxes + adjustments", function () {
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const cart = {
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items: [
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{
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unit_price: 50,
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quantity: 2,
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tax_lines: [
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{
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rate: 10,
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},
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],
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adjustments: [
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{
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amount: 10,
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},
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],
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},
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],
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}
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const serialized = JSON.parse(JSON.stringify(decorateCartTotals(cart)))
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expect(serialized).toEqual({
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items: [
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{
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unit_price: 50,
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quantity: 2,
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tax_lines: [
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{
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rate: 10,
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total: 9,
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subtotal: 10,
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},
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],
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adjustments: [
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{
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amount: 10,
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total: 11,
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subtotal: 10,
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},
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],
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subtotal: 100,
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total: 99,
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original_total: 110,
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discount_total: 10,
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discount_tax_total: 1,
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tax_total: 9,
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original_tax_total: 10,
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},
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],
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total: 99,
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subtotal: 100,
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tax_total: 9,
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discount_total: 10,
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discount_tax_total: 1,
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original_total: 100,
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original_tax_total: 10,
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item_total: 99,
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item_subtotal: 100,
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item_tax_total: 9,
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original_item_total: 110,
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original_item_subtotal: 100,
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original_item_tax_total: 10,
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})
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})
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it("should calculate carts with shipping_methods + items + taxes + discounts with is_tax_inclusive", function () {
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const cartMixed = {
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items: [
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{
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unit_price: 100,
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quantity: 1,
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is_tax_inclusive: true,
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tax_lines: [
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{
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rate: 10,
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},
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],
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adjustments: [
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{
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amount: 10,
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},
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],
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},
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{
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unit_price: 10,
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quantity: 1,
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is_tax_inclusive: false,
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tax_lines: [
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{
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rate: 10,
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},
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],
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adjustments: [
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{
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amount: 3,
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},
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],
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},
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],
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shipping_methods: [
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{
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amount: 10,
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is_tax_inclusive: true,
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tax_lines: [
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{
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rate: 5,
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},
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],
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adjustments: [
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{
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amount: 2,
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},
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],
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},
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{
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amount: 5,
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is_tax_inclusive: false,
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tax_lines: [
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{
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rate: 10,
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},
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],
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adjustments: [
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{
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amount: 2,
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},
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],
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},
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],
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}
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const serializedMixed = JSON.parse(
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JSON.stringify(decorateCartTotals(cartMixed))
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)
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expect(serializedMixed).toEqual({
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items: [
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{
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unit_price: 100,
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quantity: 1,
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is_tax_inclusive: true,
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tax_lines: [
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{
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rate: 10,
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total: 8.181818181818182,
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subtotal: 9.090909090909092,
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},
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],
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adjustments: [
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{
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amount: 10,
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subtotal: 9.090909090909092,
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total: 10,
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},
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],
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subtotal: 90.9090909090909,
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total: 90,
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original_total: 100,
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discount_total: 10,
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discount_tax_total: 1,
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tax_total: 8.181818181818182,
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original_tax_total: 9.090909090909092,
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},
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{
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unit_price: 10,
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quantity: 1,
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is_tax_inclusive: false,
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tax_lines: [
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{
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rate: 10,
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total: 0.7,
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subtotal: 1,
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},
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],
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adjustments: [
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{
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amount: 3,
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subtotal: 3,
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total: 3.3,
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},
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],
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subtotal: 10,
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total: 7.7,
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original_total: 11,
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discount_total: 3,
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discount_tax_total: 0.3,
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tax_total: 0.7,
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original_tax_total: 1,
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},
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],
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shipping_methods: [
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{
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amount: 10,
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is_tax_inclusive: true,
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tax_lines: [
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{
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rate: 5,
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total: 0.38095238095238093,
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subtotal: 0.47619047619047616,
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},
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],
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adjustments: [
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{
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amount: 2,
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subtotal: 1.9047619047619047,
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total: 2,
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},
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],
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subtotal: 10.380952380952381,
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total: 8,
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original_total: 10,
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discount_total: 2,
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discount_tax_total: 0.1,
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tax_total: 0.38095238095238093,
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original_tax_total: 0.47619047619047616,
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},
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{
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amount: 5,
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is_tax_inclusive: false,
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tax_lines: [
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{
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rate: 10,
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total: 0.3,
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subtotal: 0.5,
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},
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],
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adjustments: [
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{
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amount: 2,
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subtotal: 2,
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total: 2.2,
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},
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],
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subtotal: 5,
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total: 3.3,
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original_total: 5.5,
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discount_total: 2,
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discount_tax_total: 0.2,
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tax_total: 0.3,
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original_tax_total: 0.5,
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},
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],
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total: 104.77186147186147,
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subtotal: 100.9090909090909,
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tax_total: 9.562770562770563,
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discount_total: 17,
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discount_tax_total: 1.6,
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original_total: 110.47619047619048,
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original_tax_total: 11.067099567099566,
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item_total: 97.7,
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item_subtotal: 100.9090909090909,
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item_tax_total: 8.881818181818181,
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original_item_total: 111,
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original_item_subtotal: 100.9090909090909,
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original_item_tax_total: 10.090909090909092,
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shipping_total: 11.3,
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shipping_subtotal: 15.380952380952381,
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shipping_tax_total: 0.680952380952381,
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original_shipping_tax_total: 0.9761904761904762,
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original_shipping_tax_subtotal: 15.380952380952381,
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original_shipping_total: 15.5,
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})
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})
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it("should calculate carts with items + taxes with is_tax_inclusive", function () {
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const cartWithTax = {
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items: [
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{
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unit_price: 50,
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quantity: 2,
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is_tax_inclusive: true,
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tax_lines: [
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{
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rate: 10,
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},
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],
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},
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],
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}
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const cartWithoutTax = {
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items: [
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{
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unit_price: 50,
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quantity: 2,
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is_tax_inclusive: false,
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tax_lines: [
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{
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rate: 10,
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},
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],
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},
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],
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}
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const cartMixed = {
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items: [...cartWithTax.items, ...cartWithoutTax.items],
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}
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const serializedWith = JSON.parse(
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JSON.stringify(decorateCartTotals(cartWithTax))
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)
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const serializedWithout = JSON.parse(
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JSON.stringify(decorateCartTotals(cartWithoutTax))
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)
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const serializedMixed = JSON.parse(
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JSON.stringify(decorateCartTotals(cartMixed))
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)
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expect(serializedWith).toEqual({
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items: [
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{
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unit_price: 50,
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quantity: 2,
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is_tax_inclusive: true,
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tax_lines: [
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{
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rate: 10,
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total: 9.090909090909092,
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subtotal: 9.090909090909092,
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},
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],
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subtotal: 90.9090909090909,
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total: 100,
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original_total: 100,
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discount_total: 0,
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discount_tax_total: 0,
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tax_total: 9.090909090909092,
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original_tax_total: 9.090909090909092,
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},
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],
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total: 100,
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subtotal: 90.9090909090909,
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tax_total: 9.090909090909092,
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discount_total: 0,
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discount_tax_total: 0,
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original_total: 100,
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original_tax_total: 9.090909090909092,
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item_total: 100,
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item_subtotal: 90.9090909090909,
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item_tax_total: 9.090909090909092,
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original_item_total: 100,
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original_item_subtotal: 90.9090909090909,
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original_item_tax_total: 9.090909090909092,
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})
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expect(serializedWithout).toEqual({
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items: [
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{
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unit_price: 50,
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quantity: 2,
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is_tax_inclusive: false,
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tax_lines: [
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{
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rate: 10,
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total: 10,
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subtotal: 10,
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},
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],
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subtotal: 100,
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total: 110,
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original_total: 110,
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discount_total: 0,
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discount_tax_total: 0,
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tax_total: 10,
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original_tax_total: 10,
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},
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],
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total: 110,
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subtotal: 100,
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tax_total: 10,
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discount_total: 0,
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discount_tax_total: 0,
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original_total: 110,
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original_tax_total: 10,
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item_total: 110,
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item_subtotal: 100,
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item_tax_total: 10,
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original_item_total: 110,
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original_item_subtotal: 100,
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original_item_tax_total: 10,
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})
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expect(serializedMixed).toEqual({
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items: [
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{
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unit_price: 50,
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quantity: 2,
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is_tax_inclusive: true,
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tax_lines: [
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{
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rate: 10,
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total: 9.090909090909092,
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subtotal: 9.090909090909092,
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},
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],
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subtotal: 90.9090909090909,
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total: 100,
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original_total: 100,
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discount_total: 0,
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discount_tax_total: 0,
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tax_total: 9.090909090909092,
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original_tax_total: 9.090909090909092,
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},
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{
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unit_price: 50,
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quantity: 2,
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is_tax_inclusive: false,
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tax_lines: [
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{
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rate: 10,
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total: 10,
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subtotal: 10,
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},
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],
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subtotal: 100,
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total: 110,
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original_total: 110,
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discount_total: 0,
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discount_tax_total: 0,
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tax_total: 10,
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original_tax_total: 10,
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},
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],
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total: 210,
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subtotal: 190.9090909090909,
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tax_total: 19.09090909090909,
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discount_total: 0,
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discount_tax_total: 0,
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original_total: 210,
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original_tax_total: 19.09090909090909,
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item_total: 210,
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item_subtotal: 190.9090909090909,
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item_tax_total: 19.09090909090909,
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original_item_total: 210,
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original_item_subtotal: 190.9090909090909,
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original_item_tax_total: 19.09090909090909,
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})
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})
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it("should calculate carts with items + taxes + adjustments + shipping methods", function () {
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const cart = {
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items: [
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{
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unit_price: 50,
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quantity: 2,
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tax_lines: [
|
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{
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rate: 10,
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},
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],
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adjustments: [
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{
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amount: 20,
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},
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],
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},
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],
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shipping_methods: [
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{
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amount: 25,
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tax_lines: [
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{
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rate: 10,
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},
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],
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adjustments: [
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{
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amount: 2,
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},
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],
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},
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],
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}
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const serialized = JSON.parse(JSON.stringify(decorateCartTotals(cart)))
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expect(serialized).toEqual({
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items: [
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{
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unit_price: 50,
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quantity: 2,
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tax_lines: [
|
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{
|
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rate: 10,
|
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total: 8,
|
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subtotal: 10,
|
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},
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||||
],
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adjustments: [
|
||||
{
|
||||
amount: 20,
|
||||
total: 22,
|
||||
subtotal: 20,
|
||||
},
|
||||
],
|
||||
subtotal: 100,
|
||||
total: 88,
|
||||
original_total: 110,
|
||||
discount_total: 20,
|
||||
discount_tax_total: 2,
|
||||
tax_total: 8,
|
||||
original_tax_total: 10,
|
||||
},
|
||||
],
|
||||
shipping_methods: [
|
||||
{
|
||||
amount: 25,
|
||||
tax_lines: [
|
||||
{
|
||||
rate: 10,
|
||||
total: 2.3,
|
||||
subtotal: 2.5,
|
||||
},
|
||||
],
|
||||
adjustments: [
|
||||
{
|
||||
amount: 2,
|
||||
total: 2.2,
|
||||
subtotal: 2,
|
||||
},
|
||||
],
|
||||
subtotal: 25,
|
||||
total: 25.3,
|
||||
original_total: 27.5,
|
||||
discount_total: 2,
|
||||
discount_tax_total: 0.2,
|
||||
tax_total: 2.3,
|
||||
original_tax_total: 2.5,
|
||||
},
|
||||
],
|
||||
total: 113.6,
|
||||
subtotal: 100,
|
||||
tax_total: 10.3,
|
||||
discount_total: 22,
|
||||
discount_tax_total: 2.2,
|
||||
original_total: 118,
|
||||
original_tax_total: 12.5,
|
||||
item_total: 88,
|
||||
item_subtotal: 100,
|
||||
item_tax_total: 8,
|
||||
original_item_total: 110,
|
||||
original_item_subtotal: 100,
|
||||
original_item_tax_total: 10,
|
||||
shipping_total: 25.3,
|
||||
shipping_subtotal: 25,
|
||||
shipping_tax_total: 2.3,
|
||||
original_shipping_tax_total: 2.5,
|
||||
original_shipping_tax_subtotal: 25,
|
||||
original_shipping_total: 27.5,
|
||||
})
|
||||
})
|
||||
})
|
||||
@@ -0,0 +1,40 @@
|
||||
import { AdjustmentLineDTO, BigNumberInput } from "@medusajs/types"
|
||||
import { isDefined } from "../../common"
|
||||
import { BigNumber } from "../big-number"
|
||||
import { MathBN } from "../math"
|
||||
|
||||
export function calculateAdjustmentTotal({
|
||||
adjustments,
|
||||
includesTax,
|
||||
taxRate,
|
||||
}: {
|
||||
adjustments: Pick<AdjustmentLineDTO, "amount">[]
|
||||
includesTax?: boolean
|
||||
taxRate?: BigNumberInput
|
||||
}) {
|
||||
let total = MathBN.convert(0)
|
||||
for (const adj of adjustments) {
|
||||
if (!isDefined(adj.amount)) {
|
||||
continue
|
||||
}
|
||||
|
||||
total = MathBN.add(total, adj.amount)
|
||||
|
||||
if (isDefined(taxRate)) {
|
||||
const rate = MathBN.div(taxRate, 100)
|
||||
let taxAmount = MathBN.mult(adj.amount, rate)
|
||||
|
||||
if (includesTax) {
|
||||
taxAmount = MathBN.div(taxAmount, MathBN.add(1, rate))
|
||||
|
||||
adj["subtotal"] = new BigNumber(MathBN.sub(adj.amount, taxAmount))
|
||||
adj["total"] = new BigNumber(adj.amount)
|
||||
} else {
|
||||
adj["subtotal"] = new BigNumber(adj.amount)
|
||||
adj["total"] = new BigNumber(MathBN.add(adj.amount, taxAmount))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return total
|
||||
}
|
||||
@@ -119,6 +119,6 @@ export class BigNumber {
|
||||
}
|
||||
|
||||
valueOf() {
|
||||
return this.bignumber_
|
||||
return this.numeric_
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,227 @@
|
||||
import { BigNumberInput, CartLikeWithTotals } from "@medusajs/types"
|
||||
import { BigNumber } from "../big-number"
|
||||
import { GetItemTotalInput, getLineItemsTotals } from "../line-item"
|
||||
import { MathBN } from "../math"
|
||||
import {
|
||||
GetShippingMethodTotalInput,
|
||||
getShippingMethodsTotals,
|
||||
} from "../shipping-method"
|
||||
import { transformPropertiesToBigNumber } from "../transform-properties-to-bignumber"
|
||||
|
||||
interface TotalsConfig {
|
||||
includeTaxes?: boolean
|
||||
}
|
||||
|
||||
export interface DecorateCartLikeInputDTO {
|
||||
items?: {
|
||||
id?: string
|
||||
unit_price: BigNumberInput
|
||||
quantity: BigNumberInput
|
||||
adjustments?: { amount: BigNumberInput }[]
|
||||
tax_lines?: {
|
||||
rate: BigNumberInput
|
||||
is_tax_inclusive?: boolean
|
||||
}[]
|
||||
}[]
|
||||
shipping_methods?: {
|
||||
id?: string
|
||||
amount: BigNumberInput
|
||||
adjustments?: { amount: BigNumberInput }[]
|
||||
tax_lines?: {
|
||||
rate: BigNumberInput
|
||||
is_tax_inclusive?: boolean
|
||||
}[]
|
||||
}[]
|
||||
region?: {
|
||||
automatic_taxes?: boolean
|
||||
}
|
||||
}
|
||||
|
||||
export function decorateCartTotals(
|
||||
cartLike: DecorateCartLikeInputDTO,
|
||||
config: TotalsConfig = {}
|
||||
): CartLikeWithTotals {
|
||||
transformPropertiesToBigNumber(cartLike)
|
||||
|
||||
const items = (cartLike.items ?? []) as unknown as GetItemTotalInput[]
|
||||
const shippingMethods = (cartLike.shipping_methods ??
|
||||
[]) as unknown as GetShippingMethodTotalInput[]
|
||||
|
||||
const includeTax = config?.includeTaxes || cartLike.region?.automatic_taxes
|
||||
|
||||
const itemsTotals = getLineItemsTotals(items, {
|
||||
includeTax,
|
||||
})
|
||||
|
||||
const shippingMethodsTotals = getShippingMethodsTotals(shippingMethods, {
|
||||
includeTax,
|
||||
})
|
||||
|
||||
let subtotal = MathBN.convert(0)
|
||||
|
||||
let discountTotal = MathBN.convert(0)
|
||||
let discountTaxTotal = MathBN.convert(0)
|
||||
|
||||
let itemsSubtotal = MathBN.convert(0)
|
||||
let itemsSubtotalWithoutTaxes = MathBN.convert(0)
|
||||
|
||||
let itemsTotal = MathBN.convert(0)
|
||||
let itemsOriginalTotal = MathBN.convert(0)
|
||||
let itemsOriginalSubtotal = MathBN.convert(0)
|
||||
|
||||
let itemsTaxTotal = MathBN.convert(0)
|
||||
let itemsOriginalTaxTotal = MathBN.convert(0)
|
||||
|
||||
let shippingSubtotal = MathBN.convert(0)
|
||||
|
||||
let shippingTotal = MathBN.convert(0)
|
||||
let shippingOriginalTotal = MathBN.convert(0)
|
||||
let shippingOriginalSubtotal = MathBN.convert(0)
|
||||
|
||||
let shippingTaxTotal = MathBN.convert(0)
|
||||
let shippingOriginalTaxTotal = MathBN.convert(0)
|
||||
let shippingOriginalTaxSubtotal = MathBN.convert(0)
|
||||
|
||||
const cartItems = items.map((item, index) => {
|
||||
const itemTotals = Object.assign(item, itemsTotals[item.id ?? index] ?? {})
|
||||
|
||||
const itemSubtotal = itemTotals.subtotal
|
||||
|
||||
const itemTotal = MathBN.convert(itemTotals.total)
|
||||
const itemOriginalTotal = MathBN.convert(itemTotals.original_total)
|
||||
|
||||
const itemTaxTotal = MathBN.convert(itemTotals.tax_total)
|
||||
const itemOriginalTaxTotal = MathBN.convert(itemTotals.original_tax_total)
|
||||
|
||||
const itemDiscountTotal = MathBN.convert(itemTotals.discount_total)
|
||||
const itemDiscountTaxTotal = MathBN.convert(itemTotals.discount_tax_total)
|
||||
|
||||
subtotal = MathBN.add(subtotal, itemSubtotal)
|
||||
|
||||
discountTotal = MathBN.add(discountTotal, itemDiscountTotal)
|
||||
discountTaxTotal = MathBN.add(discountTaxTotal, itemDiscountTaxTotal)
|
||||
|
||||
itemsTotal = MathBN.add(itemsTotal, itemTotal)
|
||||
itemsOriginalTotal = MathBN.add(itemsOriginalTotal, itemOriginalTotal)
|
||||
itemsOriginalSubtotal = MathBN.add(itemsOriginalSubtotal, itemSubtotal)
|
||||
|
||||
itemsSubtotal = MathBN.add(itemsSubtotal, itemSubtotal)
|
||||
|
||||
itemsTaxTotal = MathBN.add(itemsTaxTotal, itemTaxTotal)
|
||||
itemsOriginalTaxTotal = MathBN.add(
|
||||
itemsOriginalTaxTotal,
|
||||
itemOriginalTaxTotal
|
||||
)
|
||||
|
||||
return itemTotals
|
||||
})
|
||||
|
||||
const cartShippingMethods = shippingMethods.map((shippingMethod, index) => {
|
||||
const methodTotals = Object.assign(
|
||||
shippingMethod,
|
||||
shippingMethodsTotals[shippingMethod.id ?? index] ?? {}
|
||||
)
|
||||
|
||||
const methodSubtotal = MathBN.convert(methodTotals.subtotal)
|
||||
|
||||
const methodTotal = MathBN.convert(methodTotals.total)
|
||||
const methodOriginalTotal = MathBN.convert(methodTotals.original_total)
|
||||
const methodTaxTotal = MathBN.convert(methodTotals.tax_total)
|
||||
const methodOriginalTaxTotal = MathBN.convert(
|
||||
methodTotals.original_tax_total
|
||||
)
|
||||
|
||||
const methodDiscountTotal = MathBN.convert(methodTotals.discount_total)
|
||||
const methodDiscountTaxTotal = MathBN.convert(
|
||||
methodTotals.discount_tax_total
|
||||
)
|
||||
|
||||
shippingSubtotal = MathBN.add(shippingSubtotal, methodSubtotal)
|
||||
shippingTotal = MathBN.add(shippingTotal, methodTotal)
|
||||
shippingOriginalTotal = MathBN.add(
|
||||
shippingOriginalTotal,
|
||||
methodOriginalTotal
|
||||
)
|
||||
shippingOriginalSubtotal = MathBN.add(
|
||||
shippingOriginalSubtotal,
|
||||
methodSubtotal
|
||||
)
|
||||
|
||||
shippingTaxTotal = MathBN.add(shippingTaxTotal, methodTaxTotal)
|
||||
shippingOriginalTaxTotal = MathBN.add(
|
||||
shippingOriginalTaxTotal,
|
||||
methodOriginalTaxTotal
|
||||
)
|
||||
shippingOriginalTaxSubtotal = MathBN.add(
|
||||
shippingOriginalTaxSubtotal,
|
||||
methodSubtotal
|
||||
)
|
||||
|
||||
discountTotal = MathBN.add(discountTotal, methodDiscountTotal)
|
||||
discountTaxTotal = MathBN.add(discountTaxTotal, methodDiscountTaxTotal)
|
||||
|
||||
return methodTotals
|
||||
})
|
||||
|
||||
const taxTotal = MathBN.add(itemsTaxTotal, shippingTaxTotal)
|
||||
const originalTaxTotal = MathBN.add(
|
||||
itemsOriginalTaxTotal,
|
||||
shippingOriginalTaxTotal
|
||||
)
|
||||
|
||||
// TODO: Gift Card calculations
|
||||
|
||||
const originalTempTotal = MathBN.add(
|
||||
subtotal,
|
||||
shippingOriginalTotal,
|
||||
originalTaxTotal
|
||||
)
|
||||
const originalTotal = MathBN.sub(originalTempTotal, discountTotal)
|
||||
// TODO: subtract (cart.gift_card_total + cart.gift_card_tax_total)
|
||||
const tempTotal = MathBN.add(subtotal, shippingTotal, taxTotal)
|
||||
const total = MathBN.sub(tempTotal, discountTotal)
|
||||
|
||||
const cart = { ...cartLike } as any
|
||||
|
||||
cart.total = new BigNumber(total)
|
||||
cart.subtotal = new BigNumber(subtotal)
|
||||
cart.tax_total = new BigNumber(taxTotal)
|
||||
|
||||
cart.discount_total = new BigNumber(discountTotal)
|
||||
cart.discount_tax_total = new BigNumber(discountTaxTotal)
|
||||
|
||||
// cart.gift_card_total = giftCardTotal.total || 0
|
||||
// cart.gift_card_tax_total = giftCardTotal.tax_total || 0
|
||||
|
||||
cart.original_total = new BigNumber(originalTotal)
|
||||
cart.original_tax_total = new BigNumber(originalTaxTotal)
|
||||
|
||||
// cart.original_gift_card_total =
|
||||
// cart.original_gift_card_tax_total =
|
||||
|
||||
if (cartLike.items) {
|
||||
cart.items = cartItems
|
||||
cart.item_total = new BigNumber(itemsTotal)
|
||||
cart.item_subtotal = new BigNumber(itemsSubtotal)
|
||||
cart.item_tax_total = new BigNumber(itemsTaxTotal)
|
||||
|
||||
cart.original_item_total = new BigNumber(itemsOriginalTotal)
|
||||
cart.original_item_subtotal = new BigNumber(itemsOriginalSubtotal)
|
||||
cart.original_item_tax_total = new BigNumber(itemsOriginalTaxTotal)
|
||||
}
|
||||
|
||||
if (cart.shipping_methods) {
|
||||
cart.shipping_methods = cartShippingMethods
|
||||
cart.shipping_total = new BigNumber(shippingTotal)
|
||||
cart.shipping_subtotal = new BigNumber(shippingSubtotal)
|
||||
cart.shipping_tax_total = new BigNumber(shippingTaxTotal)
|
||||
|
||||
cart.original_shipping_tax_total = new BigNumber(shippingOriginalTaxTotal)
|
||||
cart.original_shipping_tax_subtotal = new BigNumber(
|
||||
shippingOriginalTaxSubtotal
|
||||
)
|
||||
cart.original_shipping_total = new BigNumber(shippingOriginalTotal)
|
||||
}
|
||||
|
||||
return cart
|
||||
}
|
||||
@@ -1,240 +1,6 @@
|
||||
import {
|
||||
BigNumberRawValue,
|
||||
CartDTO,
|
||||
CartShippingMethodDTO,
|
||||
} from "@medusajs/types"
|
||||
import { BigNumber as BigNumberJs } from "bignumber.js"
|
||||
import { BigNumber } from "./big-number"
|
||||
import { toBigNumberJs } from "./to-big-number-js"
|
||||
|
||||
export * from "./cart"
|
||||
export * from "./line-item"
|
||||
export * from "./math"
|
||||
export * from "./promotion"
|
||||
export * from "./to-big-number-js"
|
||||
export * from "./shipping-method"
|
||||
export * from "./transform-properties-to-bignumber"
|
||||
|
||||
type GetLineItemTotalsContext = {
|
||||
includeTax?: boolean
|
||||
taxRate?: number | null
|
||||
}
|
||||
|
||||
interface GetShippingMethodTotalInput extends CartShippingMethodDTO {
|
||||
raw_amount: BigNumberRawValue
|
||||
}
|
||||
|
||||
interface GetItemTotalInput {
|
||||
id: string
|
||||
unit_price: BigNumber
|
||||
quantity: number
|
||||
is_tax_inclusive?: boolean
|
||||
tax_total?: BigNumber
|
||||
original_tax_total?: BigNumber
|
||||
}
|
||||
|
||||
interface GetItemTotalOutput {
|
||||
quantity: number
|
||||
unit_price: BigNumber
|
||||
|
||||
subtotal: BigNumber
|
||||
total: BigNumber
|
||||
original_total: BigNumber
|
||||
discount_total: BigNumber
|
||||
tax_total: BigNumber
|
||||
original_tax_total: BigNumber
|
||||
}
|
||||
|
||||
export function getShippingMethodTotals(
|
||||
shippingMethods: GetShippingMethodTotalInput[],
|
||||
context: { includeTax?: boolean }
|
||||
) {
|
||||
const { includeTax } = context
|
||||
|
||||
const shippingMethodsTotals = {}
|
||||
|
||||
for (const shippingMethod of shippingMethods) {
|
||||
shippingMethodsTotals[shippingMethod.id] = getShippingMethodTotals_(
|
||||
shippingMethod,
|
||||
{
|
||||
includeTax,
|
||||
}
|
||||
)
|
||||
}
|
||||
|
||||
return shippingMethodsTotals
|
||||
}
|
||||
|
||||
export function getShippingMethodTotals_(
|
||||
shippingMethod: GetShippingMethodTotalInput,
|
||||
context: { includeTax?: boolean }
|
||||
) {
|
||||
const { amount, taxTotal, originalTaxTotal } = toBigNumberJs(shippingMethod, [
|
||||
"amount",
|
||||
"tax_total",
|
||||
"original_tax_total",
|
||||
])
|
||||
|
||||
const amountBn = new BigNumber(amount)
|
||||
|
||||
const totals = {
|
||||
amount: amountBn,
|
||||
total: amountBn,
|
||||
original_total: amountBn,
|
||||
subtotal: amountBn,
|
||||
tax_total: new BigNumber(taxTotal),
|
||||
original_tax_total: new BigNumber(originalTaxTotal),
|
||||
}
|
||||
|
||||
const isTaxInclusive = context.includeTax ?? shippingMethod.is_tax_inclusive
|
||||
|
||||
if (isTaxInclusive) {
|
||||
const subtotal = amount.minus(taxTotal)
|
||||
totals.subtotal = new BigNumber(subtotal)
|
||||
} else {
|
||||
const originalTotal = amount.plus(originalTaxTotal)
|
||||
const total = amount.plus(taxTotal)
|
||||
totals.original_total = new BigNumber(originalTotal)
|
||||
totals.total = new BigNumber(total)
|
||||
}
|
||||
|
||||
return totals
|
||||
}
|
||||
|
||||
export function getLineItemTotals(
|
||||
items: GetItemTotalInput[],
|
||||
context: GetLineItemTotalsContext
|
||||
): { [itemId: string]: GetItemTotalOutput } {
|
||||
const itemsTotals: { [itemId: string]: GetItemTotalOutput } = {}
|
||||
|
||||
for (const item of items) {
|
||||
itemsTotals[item.id] = getTotalsForSingleLineItem(item, {
|
||||
includeTax: context.includeTax,
|
||||
})
|
||||
}
|
||||
|
||||
return itemsTotals
|
||||
}
|
||||
|
||||
function getTotalsForSingleLineItem(
|
||||
item: GetItemTotalInput,
|
||||
context: GetLineItemTotalsContext
|
||||
) {
|
||||
const { unitPrice, taxTotal, originalTaxTotal } = toBigNumberJs(item, [
|
||||
"unit_price",
|
||||
"tax_total",
|
||||
"original_tax_total",
|
||||
])
|
||||
|
||||
const subtotal = unitPrice.times(item.quantity)
|
||||
|
||||
const discountTotal = BigNumberJs(0)
|
||||
|
||||
const total = subtotal.minus(discountTotal)
|
||||
|
||||
const totals: GetItemTotalOutput = {
|
||||
quantity: item.quantity,
|
||||
unit_price: item.unit_price,
|
||||
|
||||
subtotal: new BigNumber(subtotal),
|
||||
total: new BigNumber(total),
|
||||
original_total: new BigNumber(subtotal),
|
||||
discount_total: new BigNumber(discountTotal),
|
||||
tax_total: new BigNumber(taxTotal),
|
||||
original_tax_total: new BigNumber(originalTaxTotal),
|
||||
}
|
||||
|
||||
const isTaxInclusive = context.includeTax ?? item.is_tax_inclusive
|
||||
|
||||
if (isTaxInclusive) {
|
||||
const subtotal = unitPrice.times(totals.quantity).minus(originalTaxTotal)
|
||||
|
||||
const subtotalBn = new BigNumber(subtotal)
|
||||
totals.subtotal = subtotalBn
|
||||
totals.total = subtotalBn
|
||||
totals.original_total = subtotalBn
|
||||
} else {
|
||||
const newTotal = total.plus(taxTotal)
|
||||
const originalTotal = subtotal.plus(originalTaxTotal)
|
||||
totals.total = new BigNumber(newTotal)
|
||||
totals.original_total = new BigNumber(originalTotal)
|
||||
}
|
||||
|
||||
return totals
|
||||
}
|
||||
|
||||
export function decorateCartTotals(
|
||||
{
|
||||
shippingMethods = [],
|
||||
items = [],
|
||||
}: {
|
||||
items: GetItemTotalInput[]
|
||||
shippingMethods: GetShippingMethodTotalInput[]
|
||||
},
|
||||
totalsConfig: { includeTaxes?: boolean } = {}
|
||||
): CartDTO {
|
||||
let cart: any = {}
|
||||
|
||||
const includeTax = totalsConfig?.includeTaxes
|
||||
|
||||
const itemsTotals = getLineItemTotals(items, {
|
||||
includeTax,
|
||||
})
|
||||
|
||||
const shippingMethodsTotals = getShippingMethodTotals(shippingMethods, {
|
||||
includeTax,
|
||||
})
|
||||
|
||||
const subtotal = BigNumberJs(0)
|
||||
const discountTotal = BigNumberJs(0)
|
||||
const itemTaxTotal = BigNumberJs(0)
|
||||
const shippingTotal = BigNumberJs(0)
|
||||
const shippingTaxTotal = BigNumberJs(0)
|
||||
|
||||
cart.items = items.map((item) => {
|
||||
const itemTotals = Object.assign(item, itemsTotals[item.id] ?? {})
|
||||
|
||||
const subtotal = BigNumberJs(itemTotals.subtotal.raw!.value)
|
||||
const discountTotal = BigNumberJs(itemTotals.discount_total.raw!.value)
|
||||
const itemTaxTotal = BigNumberJs(itemTotals.tax_total.raw!.value)
|
||||
|
||||
subtotal.plus(subtotal)
|
||||
discountTotal.plus(discountTotal)
|
||||
itemTaxTotal.plus(itemTaxTotal)
|
||||
|
||||
return itemTotals
|
||||
})
|
||||
|
||||
cart.shipping_methods = shippingMethods.map((shippingMethod) => {
|
||||
const methodTotals = Object.assign(
|
||||
shippingMethod,
|
||||
shippingMethodsTotals[shippingMethod.id] ?? {}
|
||||
)
|
||||
|
||||
const total = BigNumberJs(methodTotals.total.raw!.value)
|
||||
const methodTaxTotal = BigNumberJs(methodTotals.tax_total.raw!.value)
|
||||
|
||||
shippingTotal.plus(total)
|
||||
shippingTaxTotal.plus(methodTaxTotal)
|
||||
|
||||
return methodTotals
|
||||
})
|
||||
|
||||
const taxTotal = itemTaxTotal.plus(shippingTaxTotal)
|
||||
|
||||
// TODO: Discount + Gift Card calculations
|
||||
|
||||
// TODO: subtract (cart.gift_card_total + cart.discount_total + cart.gift_card_tax_total)
|
||||
const total = subtotal.plus(shippingTotal).plus(shippingTotal).plus(taxTotal)
|
||||
|
||||
cart.total = new BigNumber(total)
|
||||
cart.subtotal = new BigNumber(subtotal)
|
||||
cart.discount_total = new BigNumber(discountTotal)
|
||||
cart.item_tax_total = new BigNumber(itemTaxTotal)
|
||||
cart.shipping_total = new BigNumber(shippingTotal)
|
||||
cart.shipping_tax_total = new BigNumber(shippingTaxTotal)
|
||||
cart.tax_total = new BigNumber(taxTotal)
|
||||
|
||||
// cart.discount_total = Math.round(cart.discount_total)
|
||||
// cart.gift_card_total = giftCardTotal.total || 0
|
||||
// cart.gift_card_tax_total = giftCardTotal.tax_total || 0
|
||||
|
||||
return cart as CartDTO
|
||||
}
|
||||
@@ -0,0 +1,126 @@
|
||||
import { AdjustmentLineDTO, TaxLineDTO } from "@medusajs/types"
|
||||
import { calculateAdjustmentTotal } from "../adjustment"
|
||||
import { BigNumber } from "../big-number"
|
||||
import { MathBN } from "../math"
|
||||
import { calculateTaxTotal } from "../tax"
|
||||
|
||||
interface GetLineItemsTotalsContext {
|
||||
includeTax?: boolean
|
||||
}
|
||||
|
||||
export interface GetItemTotalInput {
|
||||
id: string
|
||||
unit_price: BigNumber
|
||||
quantity: BigNumber
|
||||
is_tax_inclusive?: boolean
|
||||
tax_lines?: Pick<TaxLineDTO, "rate">[]
|
||||
adjustments?: Pick<AdjustmentLineDTO, "amount">[]
|
||||
}
|
||||
|
||||
export interface GetItemTotalOutput {
|
||||
quantity: BigNumber
|
||||
unit_price: BigNumber
|
||||
|
||||
subtotal: BigNumber
|
||||
|
||||
total: BigNumber
|
||||
original_total: BigNumber
|
||||
|
||||
discount_total: BigNumber
|
||||
discount_tax_total: BigNumber
|
||||
|
||||
tax_total: BigNumber
|
||||
original_tax_total: BigNumber
|
||||
}
|
||||
|
||||
export function getLineItemsTotals(
|
||||
items: GetItemTotalInput[],
|
||||
context: GetLineItemsTotalsContext
|
||||
) {
|
||||
const itemsTotals = {}
|
||||
|
||||
let index = 0
|
||||
for (const item of items) {
|
||||
itemsTotals[item.id ?? index] = getLineItemTotals(item, {
|
||||
includeTax: context.includeTax || item.is_tax_inclusive,
|
||||
})
|
||||
index++
|
||||
}
|
||||
|
||||
return itemsTotals
|
||||
}
|
||||
|
||||
function getLineItemTotals(
|
||||
item: GetItemTotalInput,
|
||||
context: GetLineItemsTotalsContext
|
||||
) {
|
||||
const subtotal = MathBN.mult(item.unit_price, item.quantity)
|
||||
|
||||
const sumTaxRate = MathBN.sum(
|
||||
...((item.tax_lines ?? []).map((taxLine) => taxLine.rate) ?? [])
|
||||
)
|
||||
const discountTotal = calculateAdjustmentTotal({
|
||||
adjustments: item.adjustments || [],
|
||||
includesTax: context.includeTax,
|
||||
taxRate: sumTaxRate,
|
||||
})
|
||||
const discountTaxTotal = MathBN.mult(
|
||||
discountTotal,
|
||||
MathBN.div(sumTaxRate, 100)
|
||||
)
|
||||
|
||||
const total = MathBN.sub(subtotal, discountTotal)
|
||||
|
||||
const totals: GetItemTotalOutput = {
|
||||
quantity: item.quantity,
|
||||
unit_price: item.unit_price,
|
||||
|
||||
subtotal: new BigNumber(subtotal),
|
||||
|
||||
total: new BigNumber(total),
|
||||
original_total: new BigNumber(subtotal),
|
||||
|
||||
discount_total: new BigNumber(discountTotal),
|
||||
discount_tax_total: new BigNumber(discountTaxTotal),
|
||||
|
||||
tax_total: new BigNumber(0),
|
||||
original_tax_total: new BigNumber(0),
|
||||
}
|
||||
|
||||
const taxableAmountWithDiscount = MathBN.sub(subtotal, discountTotal)
|
||||
const taxableAmount = subtotal
|
||||
|
||||
const taxTotal = calculateTaxTotal({
|
||||
taxLines: item.tax_lines || [],
|
||||
includesTax: context.includeTax,
|
||||
taxableAmount: taxableAmountWithDiscount,
|
||||
setTotalField: "total",
|
||||
})
|
||||
totals.tax_total = new BigNumber(taxTotal)
|
||||
|
||||
const originalTaxTotal = calculateTaxTotal({
|
||||
taxLines: item.tax_lines || [],
|
||||
includesTax: context.includeTax,
|
||||
taxableAmount,
|
||||
setTotalField: "subtotal",
|
||||
})
|
||||
totals.original_tax_total = new BigNumber(originalTaxTotal)
|
||||
|
||||
const isTaxInclusive = context.includeTax ?? item.is_tax_inclusive
|
||||
|
||||
if (isTaxInclusive) {
|
||||
totals.subtotal = new BigNumber(
|
||||
MathBN.sub(
|
||||
MathBN.mult(item.unit_price, totals.quantity),
|
||||
originalTaxTotal
|
||||
)
|
||||
)
|
||||
} else {
|
||||
const newTotal = MathBN.add(total, totals.tax_total)
|
||||
const originalTotal = MathBN.add(subtotal, totals.original_tax_total)
|
||||
totals.total = new BigNumber(newTotal)
|
||||
totals.original_total = new BigNumber(originalTotal)
|
||||
}
|
||||
|
||||
return totals
|
||||
}
|
||||
@@ -31,7 +31,7 @@ export class MathBN {
|
||||
}
|
||||
|
||||
static sum(...nums: BNInput[]): BigNumberJS {
|
||||
return MathBN.add(...nums)
|
||||
return MathBN.add(0, ...(nums ?? [0]))
|
||||
}
|
||||
|
||||
static sub(...nums: BNInput[]): BigNumberJS {
|
||||
|
||||
@@ -1 +1,58 @@
|
||||
export * from "./totals"
|
||||
import {
|
||||
ApplicationMethodAllocation,
|
||||
ApplicationMethodType,
|
||||
} from "../../promotion"
|
||||
|
||||
function getPromotionValueForPercentage(promotion, lineItemTotal) {
|
||||
return (promotion.value / 100) * lineItemTotal
|
||||
}
|
||||
|
||||
function getPromotionValueForFixed(promotion, lineItemTotal, lineItemsTotal) {
|
||||
if (promotion.allocation === ApplicationMethodAllocation.ACROSS) {
|
||||
return (lineItemTotal / lineItemsTotal) * promotion.value
|
||||
}
|
||||
|
||||
return promotion.value
|
||||
}
|
||||
|
||||
export function getPromotionValue(promotion, lineItemTotal, lineItemsTotal) {
|
||||
if (promotion.type === ApplicationMethodType.PERCENTAGE) {
|
||||
return getPromotionValueForPercentage(promotion, lineItemTotal)
|
||||
}
|
||||
|
||||
return getPromotionValueForFixed(promotion, lineItemTotal, lineItemsTotal)
|
||||
}
|
||||
|
||||
export function getApplicableQuantity(lineItem, maxQuantity) {
|
||||
if (maxQuantity && lineItem.quantity) {
|
||||
return Math.min(lineItem.quantity, maxQuantity)
|
||||
}
|
||||
|
||||
return lineItem.quantity
|
||||
}
|
||||
|
||||
function getLineItemUnitPrice(lineItem) {
|
||||
return lineItem.subtotal / lineItem.quantity
|
||||
}
|
||||
|
||||
export function calculateAdjustmentAmountFromPromotion(
|
||||
lineItem,
|
||||
promotion,
|
||||
lineItemsTotal = 0
|
||||
) {
|
||||
const quantity = getApplicableQuantity(lineItem, promotion.max_quantity)
|
||||
const lineItemTotal = getLineItemUnitPrice(lineItem) * quantity
|
||||
const applicableTotal = lineItemTotal - promotion.applied_value
|
||||
|
||||
if (applicableTotal <= 0) {
|
||||
return applicableTotal
|
||||
}
|
||||
|
||||
const promotionValue = getPromotionValue(
|
||||
promotion,
|
||||
applicableTotal,
|
||||
lineItemsTotal
|
||||
)
|
||||
|
||||
return Math.min(promotionValue, applicableTotal)
|
||||
}
|
||||
@@ -1,58 +0,0 @@
|
||||
import {
|
||||
ApplicationMethodAllocation,
|
||||
ApplicationMethodType,
|
||||
} from "../../promotion"
|
||||
|
||||
function getPromotionValueForPercentage(promotion, lineItemTotal) {
|
||||
return (promotion.value / 100) * lineItemTotal
|
||||
}
|
||||
|
||||
function getPromotionValueForFixed(promotion, lineItemTotal, lineItemsTotal) {
|
||||
if (promotion.allocation === ApplicationMethodAllocation.ACROSS) {
|
||||
return (lineItemTotal / lineItemsTotal) * promotion.value
|
||||
}
|
||||
|
||||
return promotion.value
|
||||
}
|
||||
|
||||
export function getPromotionValue(promotion, lineItemTotal, lineItemsTotal) {
|
||||
if (promotion.type === ApplicationMethodType.PERCENTAGE) {
|
||||
return getPromotionValueForPercentage(promotion, lineItemTotal)
|
||||
}
|
||||
|
||||
return getPromotionValueForFixed(promotion, lineItemTotal, lineItemsTotal)
|
||||
}
|
||||
|
||||
export function getApplicableQuantity(lineItem, maxQuantity) {
|
||||
if (maxQuantity && lineItem.quantity) {
|
||||
return Math.min(lineItem.quantity, maxQuantity)
|
||||
}
|
||||
|
||||
return lineItem.quantity
|
||||
}
|
||||
|
||||
function getLineItemUnitPrice(lineItem) {
|
||||
return lineItem.subtotal / lineItem.quantity
|
||||
}
|
||||
|
||||
export function calculateAdjustmentAmountFromPromotion(
|
||||
lineItem,
|
||||
promotion,
|
||||
lineItemsTotal = 0
|
||||
) {
|
||||
const quantity = getApplicableQuantity(lineItem, promotion.max_quantity)
|
||||
const lineItemTotal = getLineItemUnitPrice(lineItem) * quantity
|
||||
const applicableTotal = lineItemTotal - promotion.applied_value
|
||||
|
||||
if (applicableTotal <= 0) {
|
||||
return applicableTotal
|
||||
}
|
||||
|
||||
const promotionValue = getPromotionValue(
|
||||
promotion,
|
||||
applicableTotal,
|
||||
lineItemsTotal
|
||||
)
|
||||
|
||||
return Math.min(promotionValue, applicableTotal)
|
||||
}
|
||||
@@ -0,0 +1,132 @@
|
||||
import { AdjustmentLineDTO, TaxLineDTO } from "@medusajs/types"
|
||||
import { calculateAdjustmentTotal } from "../adjustment"
|
||||
import { BigNumber } from "../big-number"
|
||||
import { MathBN } from "../math"
|
||||
import { calculateTaxTotal } from "../tax"
|
||||
|
||||
interface GetShippingMethodsTotalsContext {
|
||||
includeTax?: boolean
|
||||
}
|
||||
|
||||
export interface GetShippingMethodTotalInput {
|
||||
id: string
|
||||
amount: BigNumber
|
||||
is_tax_inclusive?: boolean
|
||||
tax_lines?: TaxLineDTO[]
|
||||
adjustments?: Pick<AdjustmentLineDTO, "amount">[]
|
||||
}
|
||||
|
||||
export interface GetShippingMethodTotalOutput {
|
||||
amount: BigNumber
|
||||
|
||||
subtotal: BigNumber
|
||||
|
||||
total: BigNumber
|
||||
original_total: BigNumber
|
||||
|
||||
discount_total: BigNumber
|
||||
discount_tax_total: BigNumber
|
||||
|
||||
tax_total: BigNumber
|
||||
original_tax_total: BigNumber
|
||||
}
|
||||
|
||||
export function getShippingMethodsTotals(
|
||||
shippingMethods: GetShippingMethodTotalInput[],
|
||||
context: GetShippingMethodsTotalsContext
|
||||
) {
|
||||
const { includeTax } = context
|
||||
|
||||
const shippingMethodsTotals = {}
|
||||
|
||||
let index = 0
|
||||
for (const shippingMethod of shippingMethods) {
|
||||
shippingMethodsTotals[shippingMethod.id ?? index] = getShippingMethodTotals(
|
||||
shippingMethod,
|
||||
{
|
||||
includeTax: includeTax || shippingMethod.is_tax_inclusive,
|
||||
}
|
||||
)
|
||||
index++
|
||||
}
|
||||
|
||||
return shippingMethodsTotals
|
||||
}
|
||||
|
||||
export function getShippingMethodTotals(
|
||||
shippingMethod: GetShippingMethodTotalInput,
|
||||
context: GetShippingMethodsTotalsContext
|
||||
) {
|
||||
const amount = MathBN.convert(shippingMethod.amount)
|
||||
const subtotal = MathBN.convert(shippingMethod.amount)
|
||||
|
||||
const sumTaxRate = MathBN.sum(
|
||||
...(shippingMethod.tax_lines?.map((taxLine) => taxLine.rate) ?? [])
|
||||
)
|
||||
|
||||
const discountTotal = calculateAdjustmentTotal({
|
||||
adjustments: shippingMethod.adjustments || [],
|
||||
includesTax: context.includeTax,
|
||||
taxRate: sumTaxRate,
|
||||
})
|
||||
const discountTaxTotal = MathBN.mult(
|
||||
discountTotal,
|
||||
MathBN.div(sumTaxRate, 100)
|
||||
)
|
||||
|
||||
const total = MathBN.sub(amount, discountTotal)
|
||||
|
||||
const totals: GetShippingMethodTotalOutput = {
|
||||
amount: new BigNumber(amount),
|
||||
|
||||
subtotal: new BigNumber(subtotal),
|
||||
|
||||
total: new BigNumber(total),
|
||||
original_total: new BigNumber(amount),
|
||||
|
||||
discount_total: new BigNumber(discountTotal),
|
||||
discount_tax_total: new BigNumber(discountTaxTotal),
|
||||
|
||||
tax_total: new BigNumber(0),
|
||||
original_tax_total: new BigNumber(0),
|
||||
}
|
||||
|
||||
const taxLines = shippingMethod.tax_lines || []
|
||||
|
||||
const taxableAmountWithDiscount = MathBN.sub(subtotal, discountTotal)
|
||||
const taxableAmount = subtotal
|
||||
|
||||
const taxTotal = calculateTaxTotal({
|
||||
taxLines,
|
||||
includesTax: context.includeTax,
|
||||
taxableAmount: taxableAmountWithDiscount,
|
||||
setTotalField: "total",
|
||||
})
|
||||
totals.tax_total = new BigNumber(taxTotal)
|
||||
|
||||
const originalTaxTotal = calculateTaxTotal({
|
||||
taxLines,
|
||||
includesTax: context.includeTax,
|
||||
taxableAmount,
|
||||
setTotalField: "subtotal",
|
||||
})
|
||||
totals.original_tax_total = new BigNumber(originalTaxTotal)
|
||||
|
||||
const isTaxInclusive = context.includeTax ?? shippingMethod.is_tax_inclusive
|
||||
|
||||
if (isTaxInclusive) {
|
||||
const subtotal = MathBN.add(shippingMethod.amount, taxTotal)
|
||||
totals.subtotal = new BigNumber(subtotal)
|
||||
} else {
|
||||
const originalTotal = MathBN.add(
|
||||
shippingMethod.amount,
|
||||
totals.original_tax_total
|
||||
)
|
||||
const total = MathBN.add(totals.total, totals.tax_total)
|
||||
|
||||
totals.total = new BigNumber(total)
|
||||
totals.original_total = new BigNumber(originalTotal)
|
||||
}
|
||||
|
||||
return totals
|
||||
}
|
||||
@@ -0,0 +1,33 @@
|
||||
import { BigNumberInput, TaxLineDTO } from "@medusajs/types"
|
||||
import { BigNumber } from "../big-number"
|
||||
import { MathBN } from "../math"
|
||||
|
||||
export function calculateTaxTotal({
|
||||
taxLines,
|
||||
includesTax,
|
||||
taxableAmount,
|
||||
setTotalField,
|
||||
}: {
|
||||
taxLines: Pick<TaxLineDTO, "rate">[]
|
||||
includesTax?: boolean
|
||||
taxableAmount: BigNumberInput
|
||||
setTotalField?: string
|
||||
}) {
|
||||
let taxTotal = MathBN.convert(0)
|
||||
for (const taxLine of taxLines) {
|
||||
const rate = MathBN.div(taxLine.rate, 100)
|
||||
let taxAmount = MathBN.mult(taxableAmount, rate)
|
||||
|
||||
if (includesTax) {
|
||||
taxAmount = MathBN.div(taxAmount, MathBN.add(1, rate))
|
||||
}
|
||||
|
||||
if (setTotalField) {
|
||||
;(taxLine as any)[setTotalField] = new BigNumber(taxAmount)
|
||||
}
|
||||
|
||||
taxTotal = MathBN.add(taxTotal, taxAmount)
|
||||
}
|
||||
|
||||
return taxTotal
|
||||
}
|
||||
@@ -1,28 +0,0 @@
|
||||
import { BigNumberInput } from "@medusajs/types"
|
||||
import { BigNumber as BigNumberJs } from "bignumber.js"
|
||||
import { isDefined, toCamelCase } from "../common"
|
||||
import { BigNumber } from "./big-number"
|
||||
type InputEntity<T, V extends string> = { [key in V]?: InputEntityField }
|
||||
type InputEntityField = number | string | BigNumber
|
||||
type Camelize<V extends string> = V extends `${infer A}_${infer B}`
|
||||
? `${A}${Camelize<Capitalize<B>>}`
|
||||
: V
|
||||
type Output<V extends string> = { [key in Camelize<V>]: BigNumberJs }
|
||||
|
||||
export function toBigNumberJs<T, V extends string>(
|
||||
entity: InputEntity<T, V>,
|
||||
fields: V[]
|
||||
): Output<V> {
|
||||
return fields.reduce((acc, field: string) => {
|
||||
const camelCased = toCamelCase(field)
|
||||
let val: BigNumberInput = 0
|
||||
|
||||
if (isDefined(entity[field])) {
|
||||
const entityField = entity[field]
|
||||
val = (entityField?.raw?.value ?? entityField) as number | string
|
||||
}
|
||||
|
||||
acc[camelCased] = new BigNumberJs(val)
|
||||
return acc
|
||||
}, {} as Output<V>)
|
||||
}
|
||||
Reference in new issue
Block a user