623eb720dc
- Backend: payout is now random between FAUCET_MIN_SATS and FAUCET_MAX_SATS - Remove weighted buckets; simplify config and .env.example - Frontend: show loading and eligibility in main body, modal only for confirm/success - Rename Confirm payout to Claim; add styles for body loading and eligible state Made-with: Cursor
45 lines
1.5 KiB
TypeScript
45 lines
1.5 KiB
TypeScript
import { randomInt } from "crypto";
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import { v4 as uuidv4 } from "uuid";
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import { config } from "../config.js";
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import { getDb } from "../db/index.js";
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import { getWalletBalanceSats } from "./lnbits.js";
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const QUOTE_TTL_SECONDS = 60;
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/**
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* Random payout between FAUCET_MIN_SATS and FAUCET_MAX_SATS (inclusive),
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* capped by daily budget remaining.
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*/
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export function computePayoutForClaim(todayPaidSats: number): number {
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const remaining = Math.max(0, config.dailyBudgetSats - todayPaidSats);
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if (remaining < config.faucetMinSats) return 0;
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const min = Math.max(config.faucetMinSats, 1);
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const max = Math.min(config.faucetMaxSats, remaining);
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if (max < min) return 0;
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return randomInt(min, max + 1);
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}
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export interface CreateQuoteResult {
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quoteId: string;
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payoutSats: number;
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expiresAt: number;
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}
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export async function createQuote(pubkey: string, lightningAddress: string): Promise<CreateQuoteResult | null> {
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const db = getDb();
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const now = Math.floor(Date.now() / 1000);
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const dayStart = now - (now % 86400);
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const todayPaid = await db.getPaidSatsSince(dayStart);
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let payout = computePayoutForClaim(todayPaid);
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if (payout <= 0) return null;
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const walletBalance = await getWalletBalanceSats();
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payout = Math.min(payout, Math.max(0, walletBalance));
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if (payout < config.faucetMinSats) return null;
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const quoteId = uuidv4();
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const expiresAt = now + QUOTE_TTL_SECONDS;
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await db.createQuote(quoteId, pubkey, payout, lightningAddress, expiresAt);
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return { quoteId, payoutSats: payout, expiresAt };
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}
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