app.js

import express from 'express';
import morgan from 'morgan';
import cookieParser from 'cookie-parser';
import bodyParser from 'body-parser';

const port = 3000;

import { router as adminRouter } from './app/controllers/AdminController.js';
import { router as userRouter } from './app/controllers/UserController.js';
import { router as scRouter } from './app/controllers/SmartContractController.js';
import { router as spenderRouter } from './app/controllers/SpenderController.js';
import { router as swaggerRouter } from './app/configuration/swagger.js';

var app = express();

//import "dotenv/config.js";


app.use(morgan('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());

app.use('/api/admin', adminRouter);
app.use('/api/user', userRouter);
app.use('/api/sc', scRouter);
app.use('/api/spender', spenderRouter);
app.use('/api/docs', swaggerRouter);

// catch 404 and forward to error handler
app.use(function (req, res, next) {
  var err = new Error('Not Found');
  err.status = 404;
  next(err);
});

// error handler
app.use(function (err, req, res, next) {
  console.error(`Error! ${err}`);

  const error = {
    status: err.status || 500,
    message: err.message,
  };

  res.status(error.status).send(error);
});

function onError(error) {
  if (error.syscall !== 'listen') {
    throw error;
  }

  const bind = typeof port === 'string' ? 'Pipe ' + port : 'Port ' + port;

  // handle specific listen errors with friendly messages
  switch (error.code) {
    case 'EACCES':
      console.error(bind + ' requires elevated privileges');
      process.exit(1);
    case 'EADDRINUSE':
      console.error(bind + ' is already in use');
      process.exit(1);
    default:
      throw error;
  }
}

function onListening() {
  const addr = app.address();
  const bind = typeof addr === 'string' ? 'pipe ' + addr : 'port ' + addr.port;
  console.log('\nListening on ' + bind);
}

app.listen(port);
app.on('error', onError);
app.on('listening', onListening);

console.log('Server started on port ' + port);