/* eslint-disable */

const express = require("express");
const { CloudEvent, HTTP } = require("cloudevents");
const app = express();

app.use((req, res, next) => {
  let data = "";

  req.setEncoding("utf8");
  req.on("data", function (chunk) {
    data += chunk;
  });

  req.on("end", function () {
    req.body = data;
    next();
  });
});

app.post("/", (req, res) => {
  console.log("HEADERS", req.headers);
  console.log("BODY", req.body);

  try {
    const event = HTTP.toEvent({ headers: req.headers, body: req.body });
    // respond as an event
    const responseEventMessage = new CloudEvent({
      source: '/',
      type: 'event:response',
      ...event,
      data: {
        hello: 'world'
      }
    });

    // const message = HTTP.binary(responseEventMessage)
    const message = HTTP.structured(responseEventMessage)
    res.set(message.headers)
    res.send(message.body)

  } catch (err) {
    console.error(err);
    res.status(415).header("Content-Type", "application/json").send(JSON.stringify(err));
  }
});

app.listen(3000, () => {
  console.log("Example app listening on port 3000!");
});