Simple Wire Bot

echo.ts

/**
 *  This is a very simple bot, that echos text it receives.
 *  For a sake of simplicity, we don't don any checks and assume only happy scenarios.
 *
 *  We used Deno with Oak, to have a single executable file as short as possible without
 *  any boiler plate.
 *
 *  Run as "deno run --allow-net echo.ts".
 */
import { Application, Context } from 'https://deno.land/x/oak/mod.ts';
// create an Oak Application
const app = new Application();
// register middleware (in our case it's an endpoint)
app.use(async (ctx: Context) => {
  // assume that we're getting a POST/PUT request with JSON payload, for all possible payloads see
  // https://github.com/wireapp/roman#events-that-are-sent-as-http-post-to-your-endpoint-webhook-or-websocket
  const body = await ctx.request.body({ type: 'json' }).value;
  // only respond to text events
  if (body.type === 'conversation.new_text') {
    // echo text back to the conversation by responding to a REST call from Roman
    ctx.response.body = { type: 'text', text: { data: `You said: ${body.text.data}` } };
  }
  // respond to all request with status code 200
  ctx.response.status = 200;
});
// start the web server
await app.listen({ port: 8080 });