authsrv/src/routes/well-known/auth-node.ts

import { RouteOptions } from "fastify";

import { BASE_URL, DOMAIN } from "~/config.js";
import { Account } from "~/db/entities/account.js";
import LongmontDataSource from "~/db/index.js";

interface AuthNode {
	api_base: string;
	name_suffix: string;
	software: {
		name: string;
		version: string;
		source: string;
	};
	features: string[];
	registrations: "open" | "approval" | "closed";
	usage: {
		users: number | null;
	};
}

const route: RouteOptions = {
	method: "GET",
	url: "/.well-known/longmont/auth-node",
	handler: async (_, res) => {
		const userCount = await LongmontDataSource.getRepository(Account).count();

		res.send({
			api_base: BASE_URL,
			name_suffix: DOMAIN,
			software: {
				name: "authsrv",
				version: "0.1.0-dev",
				source: "https://github.com/longmont-chat",
			},
			features: [],
			registrations: "open",
			usage: {
				users: userCount,
			},
		} satisfies AuthNode);

		res.status(204);
	},
};

export default route;