'use strict';

const express = require('express');
const logger = require('../logger');
const { port } = require('../config');

const app = express();
require('./middleware')(app);
app.use('/', require('./routes'));
// eslint-disable-next-line no-unused-vars
app.use((err, req, res, next) => res.sendStatus(err.status || 500));

let server;

function start() {
  return new Promise((resolve, reject) => {
    if (server) {
      reject('Server has already been started');
      return;
    }
    try {
      server = app.listen(port, () => {
        logger.info(`Server running on port ${port}...`);
        resolve(app);
      });
    } catch (e) {
      reject(e);
    }
  });
}

function stop() {
  return new Promise((resolve, reject) => {
    if (!server) {
      reject('Server was not started');
      return;
    }
    server.close();
    server = undefined;
    resolve();
  });
}

module.exports = {
  start,
  stop,
};