#!/usr/bin/env node

const app = require('../app');
const http = require('http');

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

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

function onListening(server) {
  const addr = server.address();
  console.log(`Listening on http://localhost:${addr.port}/`);
}

const port = process.env.PORT || '3000';
const server = http.createServer(app);

server.listen(port);
server.on('error', error => onError(error, port));
server.on('listening', () => onListening(server));