69 lines
2.4 KiB
TypeScript
69 lines
2.4 KiB
TypeScript
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import { Tariff } from "@root/model/tariff";
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import { mockDiscounts } from "../__mocks__/discounts";
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import { PrivilegeWithAmount } from "@root/model/privilege";
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import { PrivilegeDiscount, ServiceDiscount } from "../model/discount";
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export function calcTariffPrices(tariff: Tariff): {
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price: number | undefined;
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priceWithDiscounts: number | undefined;
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} {
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let price = tariff.price ?? tariff.privilegies.reduce((sum, privilege) => sum + privilege.amount * privilege.price / 100, 0);
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const priceWithDiscounts = tariff.privilegies.reduce((sum, privilege) => {
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let privilegePrice = privilege.amount * privilege.price / 100;
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const privilegeDiscount = findPrivilegeDiscount(privilege);
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if (privilegeDiscount) privilegePrice *= privilegeDiscount.target.products[0].factor;
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const serviceDiscount = findServiceDiscount(privilege.serviceKey, privilegePrice);
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if (serviceDiscount) privilegePrice *= serviceDiscount.target.factor;
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return sum + privilegePrice;
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}, 0);
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return {
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price,
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priceWithDiscounts,
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};
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}
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function findPrivilegeDiscount(privilege: PrivilegeWithAmount): PrivilegeDiscount | null {
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const applicableDiscounts = mockDiscounts.filter((discount): discount is PrivilegeDiscount => {
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return (
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discount.conditionType === "privilege" &&
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privilege.privilegeId === discount.condition.privilege.id &&
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privilege.amount >= discount.condition.privilege.value
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);
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});
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if (!applicableDiscounts.length) return null;
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const maxValueDiscount = applicableDiscounts.reduce((prev, current) =>
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current.condition.privilege.value > prev.condition.privilege.value ? current : prev
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);
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return maxValueDiscount;
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}
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function findServiceDiscount(
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serviceKey: string,
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currentPrice: number,
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): ServiceDiscount | null {
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const discountsForTariffService = mockDiscounts.filter((discount): discount is ServiceDiscount => {
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return (
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discount.conditionType === "service" &&
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discount.condition.service.id === serviceKey &&
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currentPrice >= discount.condition.service.value
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);
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});
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if (!discountsForTariffService.length) return null;
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const maxValueDiscount = discountsForTariffService.reduce((prev, current) => {
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return current.condition.service.value > prev.condition.service.value ? current : prev;
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});
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return maxValueDiscount;
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}
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