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import config from "$config";
import { db, g, s } from "$lib/db";
import { request } from "$lib/ecash";
import { deriveAddress } from "$lib/esplora";
import ln from "$lib/ln";
import { emit } from "$lib/sockets";
import { SATS, bip21, fail, getInvoice, getUser } from "$lib/utils";
import rpc from "@coinos/rpc";
import { v4 } from "uuid";
import { PaymentType } from "$lib/types";
const bc = rpc(config.bitcoin);
const lq = rpc(config.liquid);
export const generate = async ({ invoice, user }) => {
let {
address_type,
bolt11,
bolt12,
aid,
currency,
expiry,
fiat,
id,
hash,
tip,
amount,
items = [],
own,
rate,
request_id,
memo,
memoPrompt,
prompt,
type = PaymentType.lightning,
webhook,
secret,
forward,
} = invoice;
amount = Number.parseInt(amount || 0);
tip = tip == null ? null : Number.parseInt(tip);
if (user) user = await getUser(user.username);
if (!user) fail("user not provided");
if (typeof prompt === "undefined") prompt = user.prompt;
let account = await g(`account:${aid}`);
if (!account) account = await g(`account:${user.id}`);
if (!account) fail("account not found");
aid = account.id;
const rates = await g("rates");
if (!currency) {
const acct = aid ? await g(`account:${aid}`) : null;
currency = acct?.currency || user.currency;
}
if (!rate) rate = rates[currency];
if (fiat) amount = Math.round((SATS * fiat) / rate);
if (amount < 0) fail("invalid amount");
if (tip < 0) fail("invalid tip");
if (rate < 0) fail("invalid rate");
if (memo && memo.length > 5000) fail("memo too long");
if (!id) id = v4();
let text;
let path;
let paymentHash;
if (type === PaymentType.ark && account.type !== "ark") {
// Custodial account receiving via Ark: use vault's ark address
const accounts = await db.lRange(`${user.id}:accounts`, 0, -1);
let vaultAddress;
for (const accId of accounts) {
const acc = await g(`account:${accId}`);
if (acc?.type === "ark" && acc.arkAddress) {
vaultAddress = acc.arkAddress;
break;
}
}
if (!vaultAddress) fail("No ark vault found");
text = vaultAddress;
hash = id;
await s(`custodial-ark-invoice:${vaultAddress}`, id);
} else if (account.type === "ark") {
type = PaymentType.ark;
text = account.arkAddress;
hash = id;
await db.del(`custodial-ark-invoice:${account.arkAddress}`);
} else if (account.seed || (account.pubkey && account.fingerprint)) {
type = PaymentType.bitcoin;
const nextIndex = account.nextIndex || 0;
const { address, path: hdpath } = deriveAddress(account.pubkey, account.fingerprint, nextIndex);
hash = address;
path = hdpath;
text = bip21(hash, invoice);
account.nextIndex = nextIndex + 1;
await s(`account:${aid}`, account);
await s(`invoice:${hash}`, id);
await db.sAdd("watching", hash);
} else if (type === PaymentType.lightning) {
let r;
if (bolt11) {
const { id: nodeid } = await ln.getinfo();
r = await ln.decode(bolt11);
if (r.payee !== nodeid) fail("invalid invoice");
amount = Math.round(r.amount_msat / 1000);
r.bolt11 = bolt11;
} else {
expiry ||= 60 * 60 * 24 * 30;
r = await ln.invoice({
amount_msat: amount ? `${amount + tip}sat` : "any",
label: `${id} ${user.username} ${Date.now()}`,
description: memo || "",
expiry,
deschashonly: true,
cltv: 19,
});
}
hash = r.bolt11;
text = r.bolt11;
paymentHash = r.payment_hash;
} else if (type === PaymentType.bolt12) {
let r;
if (bolt12) {
const { id: nodeid } = await ln.getinfo();
r = await ln.decode(bolt12);
if (r.invoice_node_id !== nodeid) fail("invalid invoice");
amount = Math.round(r.invoice_amount_msat / 1000);
r.bolt12 = bolt12;
} else {
r = await ln.offer({
amount: amount ? `${amount + tip}sat` : "any",
label: `${id} ${user.username} ${new Date()}`,
description: memo || id,
});
if (await getInvoice(r.offer_id)) fail("Duplicate offer exists");
await s(`invoice:${r.offer_id}`, id);
}
hash = r.bolt12;
text = r.bolt12;
} else if (type === PaymentType.bitcoin) {
address_type ||= "bech32";
hash = await bc.getNewAddress({ address_type });
text = bip21(hash, invoice);
await db.sAdd("watching", hash);
} else if (type === PaymentType.liquid) {
address_type ||= "blech32";
hash = await lq.getNewAddress({ address_type });
text = bip21(hash, invoice);
} else if (type === PaymentType.internal) {
hash = id;
} else if (type === PaymentType.ecash) {
hash = id;
text = request(id, amount, memo);
} else if (type === PaymentType.ark) {
hash = id;
} else {
fail(`unrecognized type ${type}`);
}
invoice = {
amount,
aid,
address_type,
created: Date.now(),
currency,
hash,
expiry,
id,
items,
memo,
path,
rate,
paymentHash,
pending: 0,
received: 0,
request_id,
memoPrompt,
own,
prompt,
secret,
text,
tip,
type,
uid: user.id,
webhook,
forward,
};
if (type === "liquid") {
const { unconfidential } = await lq.getAddressInfo(hash);
await s(`invoice:${unconfidential}`, id);
}
await s(`invoice:${hash}`, id);
await s(`invoice:${id}`, invoice);
// generate() is also called on UPDATE (re-using an existing invoice id, e.g.
// a tip/webhook change or a repeated bolt12 offer create), which must NOT
// re-append the id to the list. Only add it the first time — otherwise the
// user's :invoices accumulates duplicate entries and the same offer/invoice
// renders multiple times (see kaliyi's OCEAN offer, listed 2-6x).
if ((await db.lPos(`${aid}:invoices`, id)) === null)
await db.lPush(`${aid}:invoices`, id);
if (request_id) {
const request = await g(`request:${request_id}`);
if (request) {
const { invoice_id: prev } = request;
request.invoice_id = id;
await s(`request:${request_id}`, request);
if (!prev) emit(request.requester_id, "invoice", invoice);
}
}
return invoice;
};
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