24 lines
726 B
TypeScript
24 lines
726 B
TypeScript
import { Discount } from "../../model";
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export function findLoyaltyDiscount(
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purchasesAmount: number,
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discounts: Discount[],
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): Discount | null {
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const applicableDiscounts = discounts.filter(discount => {
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return (
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discount.Layer === 4 &&
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discount.Condition.UserType !== "nko" &&
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purchasesAmount >= Number(discount.Condition.PurchasesAmount)
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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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return Number(current.Condition.PurchasesAmount) > Number(prev.Condition.PurchasesAmount) ? current : prev;
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});
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return maxValueDiscount;
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}
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