import mojo from '@mojojs/core';

const app = mojo();

app.get('/', async ctx => {
  await ctx.render({inline: inlineTemplate});
});

app.websocket('/title', ctx => {
  ctx.plain(async ws => {
    for await (const url of ws) {
      const res   = await ctx.ua.get(url);
      const html  = await res.html();
      const title = html('title').text();
      ws.send(title);
    }
  });
});

app.start();

const inlineTemplate = `
<script>
  const ws = new WebSocket('<%= ctx.urlFor('title') %>');
  ws.onmessage = event => { document.body.innerHTML += event.data };
  ws.onopen    = event => { ws.send('https://mojolicious.org') };
</script>
`;