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Revert "feat: 🎸 volume-based tiered pricing"

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amianthus
2026-02-25 19:19:10 +00:00
committed by GitHub
parent 54ab118fd6
commit 544581a8ca
64 changed files with 339 additions and 4730 deletions
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55
shared/utils/productUtils/priceUtils/getPriceForOverage.ts
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import type { FixedPriceConfig } from "../../../models/productModels/priceModels/priceConfig/fixedPriceConfig";
import type { UsagePriceConfig } from "../../../models/productModels/priceModels/priceConfig/usagePriceConfig";
import { BillingType } from "../../../models/productModels/priceModels/priceEnums";
import type { Price } from "../../../models/productModels/priceModels/priceModels";
import { tiersToLineAmount } from "../../billingUtils/invoicingUtils/lineItemUtils/tiersToLineAmount";
import { getBillingType } from "../priceUtils";
/**
* Returns the dollar cost for a given overage quantity on a price.
*
* "Overage" is the portion of usage that is **not** covered by included free
* allowance. How it is calculated depends on the billing model:
*
* - **Included usage (free tier):** no overage is charged; the free bucket is
* consumed first and this function is not called for those units.
* - **Prepaid** (`UsageInAdvance`): the customer purchased units upfront.
* Overage here is any consumption beyond what was prepaid — typically priced
* via `tiersToLineAmount` at the end of the period, not this function.
* - **Pay-per-use** (`UsageInArrear`): overage is `totalUsage − includedFree`.
* Pass that net quantity as `overage`; this function prices it against the
* graduated tier schedule.
* - **Fixed** (`FixedCycle` / `OneOff`): no usage tiers apply; returns the flat
* `config.amount` regardless of the `overage` argument.
*
* @param price - The price to evaluate. Determines billing type and tier schedule.
* @param overage - Net units consumed above the free/prepaid allowance.
* Ignored for fixed-price billing types. Must be pre-subtracted by the caller.
* @returns Dollar amount for the overage, or the flat price amount for fixed prices.
*/
export const getPriceForOverage = ({
price,
overage,
}: {
price: Price;
overage?: number;
}) => {
const usageConfig = price.config as UsagePriceConfig;
const billingType = getBillingType(usageConfig);
if (
billingType === BillingType.FixedCycle ||
billingType === BillingType.OneOff
) {
const config = price.config as FixedPriceConfig;
return config.amount;
}
const billingUnits = usageConfig.billing_units || 1;
return tiersToLineAmount({
price,
overage: overage!,
billingUnits,
});
};