next-auth-pubkey/server/createLightningAuth.js

A light-weight Lightning and Nostr auth provider for your Next.js app that's entirely self-hosted and plugs seamlessly into the next-auth framework.

import { cleanParams } from "../main/utils/params.js";
import { hardConfig } from "../main/config/index.js";
export default async function createLightningAuth(searchParams) {
    const { client_id: baseUrl = "", state = "", redirect_uri: redirectUri = "", } = cleanParams(searchParams);
    if (!baseUrl || !redirectUri || !state) {
        throw new Error("Missing query params");
    }
    const params = new URLSearchParams({ state });
    const response = await fetch(baseUrl + hardConfig.apis.create, {
        method: "POST",
        headers: { "content-type": "application/x-www-form-urlencoded" },
        body: params,
        cache: "no-cache",
    });
    const data = await response.json();
    if (!data.lnurl) {
        throw new Error("Missing lnurl");
    }
    return {
        data: {
            k1: data.k1,
            lnurl: data.lnurl,
        },
        intervals: {
            poll: data.pollInterval,
            create: data.createInterval,
        },
        query: { state, redirectUri },
    };
}