raspberrypi_nodejs_projects/app.js

const { Gpio } = require('onoff');
const poll = require('./poll')
const common = require('./libs/common')
const globalVars = require('./libs/globalVars')
const lcd = require('./libs/lcd')

lcd.heading()
// lcd.time()
poll.setInterval

const switchIn = new Gpio('17', 'in', 'both');

switchIn.watch( async (err, value) => {
  if (err) {
    console.log('Error', err);
  }
  if (value === 1) {
    if (globalVars.waterOn === 'true') {
      common.request(0)
    } else {
      common.request(1)
    }
  }
})