app.ts

const _ = require('lodash');
const path = require('path');
const fs = require('fs');
const express = require('express');
const cors = require('cors');
const morgan = require('morgan');
const helmet = require('helmet');
const cookieParser = require('cookie-parser');
const bodyParser = require('body-parser');
const webpack = require('webpack');
const UnauthorizedError = require('express-jwt/lib/errors/UnauthorizedError');

import {initdb} from './src/server/database';
import installAPI from './src/server/routes';

const ROOT_DIR = path.normalize(__dirname);
const PORT = process.env.PORT || 8000;
const webpackConfig = require('./webpack.config');
const compiler = webpack(webpackConfig);

export function makeApp(testing?: boolean) {
  const app = express();

  app.use(morgan('dev'));
  app.use(cors());
  app.use(helmet());

  app.use(cookieParser());

  // static assets

  // parse application/x-www-form-urlencoded
  app.use(bodyParser.urlencoded({ extended: false }));

  // parse application/json
  app.use(bodyParser.json());

  if (!testing) {
    if (process.env.NODE_ENV !== 'production') {
      const devMiddleware = require('webpack-dev-middleware'); // eslint-disable-line
      app.use(devMiddleware(compiler, {
        noInfo: true,
        publicPath: webpackConfig.output.publicPath,
        stats: 'errors-only',
      }));

      const hotMiddleware = require('webpack-hot-middleware'); // eslint-disable-line
      app.use(hotMiddleware(compiler));
    }
  }

  // REST API routes
  installAPI(app);

  // static assets
  app.use(express.static(ROOT_DIR));

  // otherwise return index.html
  app.get('/*', (req, res) => {
    res.sendFile(path.join(ROOT_DIR, 'index.html'));
  });

  app.use((err, req, res, next) => { // eslint-disable-line
    if (err) {
      console.log('error:', err);
      if (err instanceof UnauthorizedError) {
        res.sendStatus(403);
      } else {
        res.status(500).send(err.toString());
      }
    }
  });

  return app;
}

export function startServer() {
  const app = makeApp();
  initdb().then(() => {
    // TODO detect port like in create-react-app
    app.listen(PORT, '0.0.0.0', (err) => {
      if (err) {
        console.log(err);
        return;
      }

      console.log('Listening at http://0.0.0.0:%s', PORT);
    });
  }, err => {
    throw err;
  });
}