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import config from "$config";
import { emit } from "$lib/sockets";
import { db, g, s } from "$lib/db";
import { getUser, bip21, fail, SATS } from "$lib/utils";
import { types } from "$lib/payments";
import { v4 } from "uuid";
import rpc from "@coinos/rpc";
import ln from "$lib/ln";
let bc = rpc(config.bitcoin);
let lq = rpc(config.liquid);
export let generate = async ({ invoice, user }) => {
let {
bolt11,
aid,
currency,
expiry,
fiat,
tip,
amount,
items = [],
rate,
request_id,
memo,
memoPrompt,
prompt,
type = types.lightning,
webhook,
secret,
} = invoice;
amount = parseInt(amount || 0);
tip = parseInt(tip) || null;
if (user) user = await getUser(user.username);
if (!user) fail("user not provided");
let account = await g(`account:${aid}`);
if (!account) account = await g(`account:${user.id}`);
if (!account) fail("account not found");
let rates = await g("rates");
if (!currency) 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");
let id = v4();
let hash, text, path;
if (account.seed) {
type = "bitcoin";
let node = rpc({ ...config[type], wallet: aid });
hash = await node.getNewAddress();
text = bip21(hash, invoice);
({ hdkeypath: path } = await node.getAddressInfo(hash));
} else if (type === types.lightning) {
let r;
if (bolt11) {
let { 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 ? `${amount + tip}sat` : "any",
label: id,
description: memo || "",
expiry,
deschashonly: true,
cltv: 19,
});
}
hash = r.bolt11;
text = r.bolt11;
} else if (type === types.bitcoin) {
hash = await bc.getNewAddress();
text = bip21(hash, invoice);
} else if (type === types.liquid) {
hash = await lq.getNewAddress();
text = bip21(hash, invoice);
} else if (type === types.internal) {
hash = id;
} else {
fail("unrecognized type");
}
invoice = {
amount,
aid,
created: Date.now(),
currency,
hash,
expiry,
id,
items,
memo,
rate,
pending: 0,
received: 0,
request_id,
memoPrompt,
path,
prompt,
secret,
text,
tip,
type,
uid: user.id,
webhook,
};
if (type === "liquid") {
let { unconfidential } = await lq.getAddressInfo(hash);
await s(`invoice:${unconfidential}`, id);
}
await s(`invoice:${hash}`, id);
await s(`invoice:${id}`, invoice);
await db.lPush(`${user.id}:invoices`, id);
if (request_id) {
let request = await g(`request:${request_id}`);
if (request) {
let { 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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