mpos.js

const fastify = require('fastify')({ logger: true })
const fastifyStatic = require('@fastify/static')
const path = require('path')

const PORT = process.env.PORT || 8080

const os = require('os')
const networkInterfaces = os.networkInterfaces()

// serve static front-end resources
fastify.register(fastifyStatic, {
  root: path.join(__dirname, 'gui')
})

fastify.register(require('./api/actions'))
fastify.register(require('./routes/gui'))

fastify.setNotFoundHandler((req, res) => {
  res.redirect('/gui/menu')
})

const start = async () => {
  try {
    await fastify.listen({ port: PORT, host: '::' })
  } catch (err) {
    fastify.log.error(err)
    process.exit(1)
  }
}
start()

if (typeof networkInterfaces.wlp2s0 !== 'undefined') {
  console.log(`\n(a) app-server-ip: ${networkInterfaces.wlp2s0[0].address}:${PORT}/gui/menu\n`)
} else if (typeof networkInterfaces.enp3s0f1 !== 'undefined') {
  console.log(`\n(b) app-server-ip: ${networkInterfaces.enp3s0f1[0].address}:${PORT}/gui/menu\n`)
} else if (typeof networkInterfaces['Wi-Fi'] !== 'undefined') {
  console.log(`\n(c) app-server-ip: ${networkInterfaces['Wi-Fi'][1].address}:${PORT}/gui/menu\n`)
} else if (typeof networkInterfaces.Ethernet !== 'undefined') {
  console.log(`\n(d) app-server-ip: ${networkInterfaces.Ethernet[1].address}:${PORT}/gui/menu\n`)
} else {
  console.log('\nno IP found for sharing over the network')
}