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import { g, s } from "$lib/db";
import { l } from "$lib/logging";
import { fail } from "$lib/utils";
import { v4 } from "uuid";
import got from "got";
import { generate } from "$lib/invoices";
import { bech32 } from "bech32";
export default {
async encode({ query: { address } }, res) {
let [name, domain] = address.split("@");
let url = `https://${domain}/.well-known/lnurlp/${name}`;
let r = await got(url).json();
if (r.tag !== "payRequest") fail("not an ln address");
let enc = bech32.encode("lnurl", bech32.toWords(Buffer.from(url)), 20000);
res.send(enc);
},
async decode({ query: { text } }, res) {
let url = Buffer.from(
bech32.fromWords(bech32.decode(text, 20000).words)
).toString();
res.send(await got(url).json());
},
async lnurlp({ params: { username } }, res) {
let uid = await g(`user:${username}`);
if (!uid) fail("user not found");
let id = v4();
await s(`lnurl:${id}`, uid);
let { URL } = process.env;
let host = URL.split("/").at(-1);
res.send({
metadata: [
["text/plain", `Paying ${username}@${host}`],
["text/identifier", `${username}@${host}`]
],
callback: `${URL}/lnurl/${id}`,
tag: "payRequest"
});
},
async lnurl({ params: { id }, query: { amount } }, res) {
let pr = await g(`lnurlp:${id}`);
if (!pr) {
let uid = await g(`lnurl:${id}`);
let user = await g(`user:${uid}`);
({ text: pr } = await generate({
invoice: {
amount,
type: types.lightning
},
user
}));
await s(`lnurlp:${id}`, pr);
}
res.send({ pr });
}
};
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