import process from 'node:process';
import type { MaybePromise } from '@wener/utils';
import type { Hono } from 'hono';
import { showRoutes } from 'hono/dev';
import { App } from '../app';
import { loadEnvs } from '../utils/loadEnvs';
import { createHono } from './createHono';
import { serve } from './serve';

export interface RunHonoServerOptions<T extends Hono<any>> {
	port?: number;
	app?: T;
	createApp?: () => T;
	onApp?: (app: T) => MaybePromise<T>;
	onServe?: (arg: { port: number; address: string }) => void;
	env?: false;
}

export async function runServer<T extends Hono<any>>(opts: RunHonoServerOptions<T>) {
	let app = opts.app;
	const {
		createApp = createHono,
		onApp = (v) => v,
		onServe = ({ port, address }) => {
			showRoutes(app!);
			console.log(`Listening on http://${address}:${port}`); // Listening on http://localhost:3000
		},
	} = opts;

	if (opts.env === false) {
		// skip
	} else {
		await loadEnvs({ name: App.service });
	}

	app ||= createApp() as T;
	app = await onApp(app);

	let { port = process.env.PORT } = opts;
	return serve({ fetch: app.fetch, port: typeof port === 'string' ? Number.parseInt(port, 10) : port }, onServe);
}