index.js

"use strict";

require("dotenv").config();

const Sentry = require("@sentry/node");
const Koa = require("koa");
const cors = require("@koa/cors");
const auth = require("koa-basic-auth");
const serve = require("koa-static");
const logger = require("koa-logger");
const { bodyParser } = require("@koa/bodyparser");

const routes = require("./app/routes");
const middleware = require("./app/middleware");

const app = new Koa();

// initialize Sentry and capture errors
Sentry.init({
  dsn: process.env.SENTRY_DSN,
  autoSessionTracking: false,
});

app.on("error", (err, ctx) => {
  Sentry.withScope((scope) => {
    scope.addEventProcessor((event) => {
      return Sentry.Handlers.parseRequest(event, ctx.request);
    });
    Sentry.captureException(err);
  });
});

// setup initial middleware
app.use(logger());
app.use(cors());
app.use(bodyParser({ jsonLimit: "50mb" }));
app.use(middleware.customHeaders);

// setup routes
routes.forEach((route) => app.use(route));

// conditionally apply basic auth to downstream middleware
if (process.env.AVERT_AUTH === "true") {
  app.use(middleware.basicAuth);
  app.use(auth({ name: process.env.AVERT_USER, pass: process.env.AVERT_PASS }));
}

// setup serving of static files and custom 404
app.use(serve("./app/public"));
app.use(middleware.pageNotFound);

// configure port and start server
app.port = process.env.PORT || 3001;

if (!module.parent) {
  app.listen(app.port, () => {
    console.log(`Koa is running on http://localhost:${app.port}`);
  });
}

module.exports = app;