#!/usr/bin/env node

/**
 * Module dependencies.
 */

const app = require('../app');
const debug = require('debug')('client:server');
const http = require('http');
const config = require('../config/clientConfig');
const clientController = require('../controllers/clientController');

/**
 * Get port from environment and store in Express.
 */

app.set('port', config.clientConfig.port);

/**
 * Create HTTP server.
 */

const server = http.createServer(app);

/**
 * Listen on provided port, on all network interfaces.
 */

server.listen(config.clientConfig.port);
server.on('error', onError);
server.on('listening', onListening);

/**
 * Event listener for HTTP server "error" event.
 */

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);
      break;
    case 'EADDRINUSE':
      console.error(bind + ' is already in use');
      process.exit(1);
      break;
    default:
      throw error;
  }
}

/**
 * Event listener for HTTP server "listening" event.
 */

function onListening() {
  const addr = server.address();
  const bind = typeof addr === 'string'
    ? 'pipe ' + addr
    : 'port ' + addr.port;
  debug('Listening on ' + bind);

  // check in with the server to add this node or come back online
  clientController.checkIn();
}