#!/usr/bin/env node

/**
 * Module dependencies.
 */

const app = require('../app');
const debug = require('debug')('ztncui:server');
const http = require('http');
const https = require('https');
const fs = require('fs');

const options = {
  cert: fs.readFileSync('etc/tls/fullchain.pem'),
  key: fs.readFileSync('etc/tls/privkey.pem')
}

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

const port = normalizePort(process.env.PORT || '3000');
app.set('port', port);
const sport = normalizePort(process.env.SPORT || '3443');
app.set('sport', sport);

/**
 * Create HTTPS server and listen on localhost only for HTTP and on all network interfaces for HTTPS
 */

app.listen(port, 'localhost');
const server = https.createServer(options, app);

server.listen(sport);
server.on('error', onError);
server.on('listening', onListening);

/**
 * Normalize a port into a number, string, or false.
 */

function normalizePort(val) {
  let port = parseInt(val, 10);

  if (isNaN(port)) {
    // named pipe
    return val;
  }

  if (port >= 0) {
    // port number
    return port;
  }

  return false;
}

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

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

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

  let sbind = typeof sport === 'string'
    ? 'Pipe ' + sport
    : 'Port ' + sport;

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

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

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