import express, { Router } from 'express';
import { Log } from 'lib/Log';

import type { Server } from 'http';

const log = Log.child({
	module: 'http',
});

interface HTTPState {
	server?: Server;
}

const state: HTTPState = {
	server: undefined,
};

export const getServer = (): HTTPState['server'] => state.server;
export function connect(host: string, port: number) {
	const httpAddress = `${host}:${port}`;
	const app = express();

	// Make sure we're using the forwarded proxy headers
	app.enable('trust proxy');

	// Parse incoming body
	app.use(express.urlencoded({ extended: true }));
	app.use(express.json({}));

	// Middleware

	/// API

	// Default routes
	//// Health Check
	app.get('/', (req, res) => {
		return res.status(200).send('OK');
	});

	return new Promise<void>((resolve, reject) => {
		try {
			// eslint-disable-next-line @typescript-eslint/no-shadow
			const server = app.listen(port, host, () => {
				log.info('HTTP started @ %s', httpAddress);
				state.server = server;
				resolve();
			});
		} catch (err) {
			log.fatal('Failed to start HTTP', err);
			reject(err);
		}
	});
}

export default connect;