wip

shared/utils/cusProductUtils/convertCusProduct/cusProductToConvertedFeatureOptions.ts

@@ -0,0 +1,60 @@
+import type {
+	FeatureOptions,
+	FullCusProduct,
+} from "@models/cusProductModels/cusProductModels";
+import type { Feature } from "@models/featureModels/featureModels";
+import type { Price } from "@models/productModels/priceModels/priceModels";
+import { roundUsageToNearestBillingUnit } from "@utils/billingUtils/usageUtils/roundUsageToNearestBillingUnit";
+import { findPrepaidCusPriceByFeature } from "@utils/cusPriceUtils/findCusPriceUtils/findPrepaidCusPriceByFeature";
+import { Decimal } from "decimal.js";
+import { cusProductToFeatureOptions } from "./cusProductToFeatureOptions";
+
+/**
+ * Get the feature options from a customer product, converted to new price billing units
+ */
+export const cusProductToConvertedFeatureOptions = ({
+	cusProduct,
+	feature,
+	newPrice,
+}: {
+	cusProduct: FullCusProduct;
+	feature: Feature;
+	newPrice: Price;
+}): FeatureOptions | undefined => {
+	const currentOption = cusProductToFeatureOptions({ cusProduct, feature });
+
+	if (!currentOption?.quantity) return undefined;
+
+	const oldCusPrice = findPrepaidCusPriceByFeature({
+		customerPrices: cusProduct.customer_prices,
+		feature,
+	});
+
+	// If no old price found, we can't interpret the stored quantity
+	if (!oldCusPrice) return undefined;
+
+	const oldBillingUnits = oldCusPrice.price.config.billing_units ?? 1;
+	const newBillingUnits = newPrice.config.billing_units ?? 1;
+
+	// 1. Multiply by old billing units to get actual quantity
+	const actualQuantity = new Decimal(currentOption.quantity)
+		.mul(oldBillingUnits)
+		.toNumber();
+
+	// 2. Round to nearest new billing unit
+	const roundedQuantity = roundUsageToNearestBillingUnit({
+		usage: actualQuantity,
+		billingUnits: newBillingUnits,
+	});
+
+	// 3. Divide by new billing units
+	const convertedQuantity = new Decimal(roundedQuantity)
+		.div(newBillingUnits)
+		.toNumber();
+
+	return {
+		internal_feature_id: feature.internal_id,
+		feature_id: feature.id,
+		quantity: convertedQuantity,
+	};
+};

shared/utils/cusProductUtils/convertCusProduct/cusProductToFeatureOptions.ts

@@ -0,0 +1,23 @@
+import type {
+	FeatureOptions,
+	FullCusProduct,
+} from "@models/cusProductModels/cusProductModels";
+import type { Feature } from "@models/featureModels/featureModels";
+/**
+ * Get the feature quantity for a cus product
+ * @param cusProduct - The cus product to get the feature quantity for
+ * @returns The feature quantity
+ */
+export const cusProductToFeatureOptions = ({
+	cusProduct,
+	feature,
+}: {
+	cusProduct: FullCusProduct;
+	feature: Feature;
+}): FeatureOptions | undefined => {
+	return cusProduct.options.find(
+		(option) =>
+			option.internal_feature_id === feature.internal_id ||
+			option.feature_id === feature.id,
+	);
+};