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import { PUBLIC_DOMAIN } from "$env/static/public";
import { decode } from "$lib/bip21";
import { auth, get, isLiquid, post, sats } from "$lib/utils";
import { redirect } from "@sveltejs/kit";
let validatePromise: Promise<typeof import("bitcoin-address-validation")> | undefined;
const loadValidate = () => (validatePromise ||= import("bitcoin-address-validation"));
export default async (s, host, cookies) => {
if (!s) return;
let t = s.trim();
let amount;
let invoice;
let user;
const aid = cookies.get("aid");
if (t.startsWith("ark") || t.startsWith("tark")) redirect(303, `/send/ark/${t}${aid ? `?aid=${aid}` : ""}`);
if (t.startsWith("http")) redirect(303, t);
if (t.startsWith(host)) redirect(303, `http://${t}`);
if (t.includes("lightning=")) {
const url = new URL(t);
const params = new URLSearchParams(url.search);
t = params.get("lightning");
}
if (t.startsWith("lightning:")) t = t.replace("lightning:", "");
if (t.includes("@") && t.split("@").pop() === PUBLIC_DOMAIN) t = t.split("@")[0];
if (t.includes("@") && t.includes(".")) {
try {
t = await get(`/encode?address=${t}`);
} catch {}
}
if (t.toLowerCase().startsWith("nostr:")) {
t = t.split(":")[1];
}
if (["note", "nevent"].some((p) => t.startsWith(p))) redirect(303, `/e/${t}`);
if (["nprofile", "npub"].some((p) => t.startsWith(p))) redirect(303, `/${t}`);
// bitcoin
if (t.toLowerCase().startsWith("bitcoin:") || t.toLowerCase().startsWith("liquidnetwork:")) {
const { address: addr, options } = decode(t);
amount = options.amount;
if (options.ark) {
let r = `/send/ark/${options.ark}`;
if (amount) r += `/${Math.round(Number(amount) * sats)}`;
redirect(303, r);
}
t = addr;
}
const { validate } = await loadValidate();
if (validate(t) || isLiquid(t) || t.startsWith("bcrt1")) {
let r = `/send/bitcoin/${t}`;
if (amount) r += `/${Math.round(amount * sats)}`;
redirect(303, r);
}
// lightning
if (t.toLowerCase().startsWith("lightning:")) t = t.toLowerCase().replace("lightning:", "");
if (t.toLowerCase().startsWith("lnurl")) redirect(303, `/ln/${t}`);
if (t.includes(":")) t = t.split(":")[1];
if (t.toLowerCase().startsWith("lnr")) {
const { iid } = await post("/sendinvoice", { invreq: t }, auth(cookies));
invoice = { id: iid };
} else if (t.toLowerCase().startsWith("ln")) {
try {
const aid = cookies.get("aid");
invoice = await get(`/invoice/${t}`);
if (invoice.user.username === "mint") throw new Error("mint payment");
if (aid && aid !== invoice.aid) throw new Error("cross-account");
} catch {
if (t.toLowerCase().startsWith("lno")) {
const { offer_amount_msat: a } = await get(`/decode/${t}`);
if (a) ({ invoice: t } = await post("/fetchinvoice", { offer: t }));
}
redirect(303, `/send/lightning/${t}`);
}
}
if (invoice) redirect(303, `/invoice/${invoice.id}`);
if (t.match(/^🥜([\uFE00-\uFE0F]|[\uE0100-\uE01EF]+)$/)) {
t = (Array.from(t) as string[])
.slice(1)
.map((char: string) => {
const codePoint = char.codePointAt(0)!;
// Handle Variation Selectors (VS1-VS16): U+FE00 to U+FE0F
if (codePoint >= 0xfe00 && codePoint <= 0xfe0f) {
const byteValue = codePoint - 0xfe00; // Maps FE00->0, FE01->1, ..., FE0F->15
return String.fromCharCode(byteValue);
}
// Handle Variation Selectors Supplement (VS17-VS256): U+E0100 to U+E01EF
if (codePoint >= 0xe0100 && codePoint <= 0xe01ef) {
const byteValue = codePoint - 0xe0100 + 16; // Maps E0100->16, E0101->17, ..., E01EF->255
return String.fromCharCode(byteValue);
}
})
.join("");
}
if (t.startsWith("cashu")) {
const { id } = await post("/cash", { token: t });
redirect(303, `/ecash/${id}`);
}
if (t.startsWith("creq")) redirect(303, `/send/ecash/${t}`);
// user
try {
user = await get(`/users/${t.split("/")[0]}`);
if (user.anon) user = null;
} catch {}
if (user) redirect(303, `/pay/${t}`);
let fund;
if (t.includes("/fund")) redirect(303, t.substring(t.indexOf("/fund")));
try {
fund = await get(`/fund/${t}`);
} catch {}
if (fund) redirect(303, `/send/fund/${t}`);
};
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