const fs = require("fs");
const path = require("path");

const Koa = require("koa");
const koaPug = require("koa-pug");
const koaRouter = require("koa-router");
// const koaServe = require("koa-static");
const fetch = require("node-fetch");

const config = require("./config");
const util = require("./util");

function setRoutes(router) {
	router.get('/', async ctx => {
		await ctx.render('index', {
            title: "/ Radio",
			description: "Internet-radio broadcasting from under my desk.",
			host: util.getBaseHost(ctx.header.host)
		});
	})
	.get('/filelist', async ctx => {
		ctx.type = 'text/html';
		ctx.body = fs.readFileSync(
			path.join(__dirname, '/static/radio/assets/files/radio_filelist.html'));
	})
	.get('/playlist', async ctx => {
		ctx.attachment('radio.arav.top.m3u');
		ctx.body = fs.readFileSync(
			path.join(__dirname, '/static/radio/assets/files/radio.arav.top.m3u'));
	})
	.get('/stats', async ctx => {
		let stats = await fetch('http://radio.home/status-json.xsl').then(r => r.json());
		ctx.body = {
			server_start_iso8601: stats.icestats.server_start_iso8601,
			server_start_date: util.datetime(stats.icestats.server_start_iso8601, util.post_date_format),
			song: `${stats.icestats.source.artist} - ${stats.icestats.source.title}`,
			listener_peak: stats.icestats.source.listener_peak,
			listeners: stats.icestats.source.listeners,
		};
	});
}

module.exports = () => {
	const app = new Koa();
	const pug = new koaPug({
		viewPath: path.join(__dirname, "views", "radio"),
		locals: {
			moment: util.datetime },
		app: app
	});

	const radio_router = koaRouter();
	setRoutes(radio_router);

	app.proxy = true;
	app
		// .use(koaServe(path.join("static", "shared")))
		// .use(koaServe(path.join("static", "radio")))
		.use(radio_router.routes())
		.listen(config.radio.port, config.radio.host);

	return app;
}