31 lines
1.6 KiB
TypeScript
Executable File
31 lines
1.6 KiB
TypeScript
Executable File
import { ADDITIONAL_MARKET_FEE } from './market.ts';
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import { assertXmrAmount, xmrCommission } from './xmr-amount.ts';
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/** Allocation only, not proof of payment or an instruction to send/retain funds. */
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export function allocateXmrSale(gross: bigint, hostingBps: number) {
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assertXmrAmount(gross);
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if (gross === 0n) throw new Error('Sale price must be positive; use a free transfer for gifts');
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if (!Number.isSafeInteger(hostingBps) || hostingBps < 0 || hostingBps > 5000) {
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throw new Error('Hosting commission must be between 0 and 5000 basis points');
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}
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const hosting = xmrCommission(gross, hostingBps);
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const author = xmrCommission(gross, ADDITIONAL_MARKET_FEE.bps);
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return { gross, hosting, author, sellerBeforeNetworkCosts: gross - hosting - author };
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}
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/**
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* Evaluate an explicitly supplied total seller-funded network-cost budget, including
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* every applicable leg. Does not choose who funds an author leg or approve a quote.
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* The budget is a maximum, not revenue; actual costs/unused budget need accounting.
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*/
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export function assessXmrSaleBudget(gross: bigint, hostingBps: number, sellerNetworkBudget: bigint) {
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const allocation = allocateXmrSale(gross, hostingBps);
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assertXmrAmount(sellerNetworkBudget);
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const available = allocation.sellerBeforeNetworkCosts;
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const viable = sellerNetworkBudget < available;
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return { ...allocation, sellerNetworkBudget, viable,
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sellerMinimumNet: viable ? available - sellerNetworkBudget : 0n,
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// Additional gross-independent funding required to retain at least one atomic unit.
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fundingShortfall: viable ? 0n : sellerNetworkBudget - available + 1n };
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}
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