import path from "node:path";

const NET_PORT = 4536;
const NET_HOST = '10.0.1.39';
const WEB_ROOT = './res/';

interface FileMapping {
	endpoints: string[],
	path: string,
	mime: string
}

const mappings: FileMapping[] = [
	{
		endpoints: ['/', '/index.html'],
		path: "/index.html",
		mime: "text/html"
	},
	{
		endpoints: ['/style.css'],
		path: "/style.css",
		mime: "text/css"
	}
] as const;

Deno.serve({
	hostname: NET_HOST,
	port: NET_PORT,
	onListen: addr => console.log(`Listening on http://${addr.hostname}:${addr.port}`)
}, (req, addr) => {
	const notFound = new Response("Not Found. Did you try thinking Miku?", {
		status: 404,
		statusText: "Not Found (oo-ee-oo)",
		headers: { "Content-Type": "text/plain" }
	});

	const url = new URL(req.url);

	if (url.pathname == '/') url.pathname = '/index.html';

	const mapping = mappings.find(val => val.endpoints.some(val => url.pathname === val));

	console.log(`${addr.remoteAddr.hostname}:${addr.remoteAddr.port} ${req.method} ${url.pathname} | mapping exists: ${typeof mapping !== 'undefined'}`);
	return new Promise<Response>(resolve => {
		if (mapping) {
			Deno.readFile(path.join(WEB_ROOT, mapping.path)).then(data => {
				resolve(new Response(data, { headers: { "Content-Type": mapping.mime }}));
			}).catch(reason => {
				console.error(reason);
				resolve(notFound);
			});
		} else resolve(notFound);
	});
});