const path = require('path');
import httpErrors from 'http-errors';
import Koa from 'koa';
import Router from 'koa-router';
import sendfile from 'koa-sendfile';

const koa = new Koa();
const router = new Router();

// // error handler
// koa.use(async (ctx, next) => {
//   try {
//     await next();
//   } catch (err) {
//     ctx.status = err.status || 500;
//     ctx.body = err.message;
//   }
// });

// Frontend
router.get('/service-worker.js', async (ctx) => {
  ctx.set('Content-Type', 'application/javascript');
  const stats = await sendfile(ctx, path.join(__dirname, 'static/service-worker.js'));
  if (!ctx.status) ctx.throw(httpErrors.NotFound());
});

router.get('*', async (ctx) => {
  const stats = await sendfile(ctx, path.join(__dirname, 'static/index.html'));
  if (!ctx.status) ctx.throw(httpErrors.NotFound());
});

koa.use(router.routes());

// 404 handler
koa.use(async () => {
  throw httpErrors.NotFound();
});

export default koa;