// BNS wallet: a wallet app with an embedded .bch resolver and browser pane.
// This is the "resolver inside the wallet" architecture: the wallet holds keys,
// resolves names straight from the BCH chain, and renders the result in-app.
import express from "express";
import { loadWallet } from "./lib/wallet.js";
import { buildIndex, resolveName, registerName, updateName, normalizeName } from "./lib/bns.js";
import { APP_PORT, TLD } from "./config.js";
const wallet = await loadWallet();
const app = express();
app.use(express.json());
// tiny index cache so browsing doesn't re-scan the beacon on every keystroke
let cache = { at: 0, index: new Map() };
async function index() {
if (Date.now() - cache.at > 15_000) {
cache = { at: Date.now(), index: await buildIndex(wallet.provider) };
}
return cache.index;
}
app.get("/api/status", async (_req, res) => {
res.json({
cashaddr: wallet.cashaddr,
tokenaddr: wallet.tokenaddr,
balanceSat: String(await wallet.getBalance("sat")),
names: [...(await index()).values()].map((e) => ({ ...e })),
});
});
app.get("/api/resolve/:name", async (req, res) => {
try {
const entry = (await index()).get(normalizeName(req.params.name));
if (!entry) return res.status(404).json({ error: "NXDOMAIN" });
res.json(entry);
} catch (e) {
res.status(400).json({ error: e.message });
}
});
app.post("/api/register", async (req, res) => {
try {
const { name, records } = req.body;
cache.at = 0;
res.json(await registerName(wallet, name, records));
} catch (e) {
res.status(400).json({ error: e.message });
}
});
app.post("/api/update", async (req, res) => {
try {
const { name, records } = req.body;
cache.at = 0;
res.json(await updateName(wallet, name, records));
} catch (e) {
res.status(400).json({ error: e.message });
}
});
// The "browser" endpoint: renders what a .bch name points to.
app.get("/view/:name", async (req, res) => {
let entry;
try {
entry = (await index()).get(normalizeName(req.params.name));
} catch (e) {
return res.status(400).send(`${e.message}`);
}
if (!entry) {
return res.status(404).send(
`NXDOMAIN
${req.params.name} is not registered on the chain.
${JSON.stringify(entry, null, 2)}`);
});
app.get("/", (_req, res) => {
res.send(UI);
});
const UI = /* html */ `
BNS Wallet — .bch browser
`;
app.listen(APP_PORT, () => {
console.log(`BNS wallet+browser: http://localhost:${APP_PORT}`);
console.log(`wallet: ${wallet.cashaddr}`);
});