Feat: code refactoring and jest tests

chore: More refactoring

chore: More tests and refactors

fix: Fixed age not getting calculated properly

chore: Implemented mocking in jest

chore: More mock tests

chore: checkStuckScreen tests

lib/notifier/utils.js

@@ -0,0 +1,111 @@
+const _ = require('lodash/fp')
+const crypto = require('crypto')
+const {
+  CODES_DISPLAY,
+  NETWORK_DOWN_TIME,
+  PING,
+  ALERT_SEND_INTERVAL
+} = require('./codes')
+
+function parseEventNote(event) {
+  return _.set('note', JSON.parse(event.note), event)
+}
+
+function checkPing(device) {
+  const age = +Date.now() - +new Date(device.lastPing)
+  if (age > NETWORK_DOWN_TIME)
+    return [{ code: PING, age, machineName: device.name }]
+  return []
+}
+
+const getDeviceTime = _.flow(_.get('device_time'), Date.parse)
+
+const isActive = it => it.active && (it.balance || it.errors)
+
+const codeDisplay = code => CODES_DISPLAY[code]
+
+const alertFingerprint = {
+  fingerprint: null,
+  lastAlertTime: null
+}
+
+const getAlertFingerprint = () => alertFingerprint.fingerprint
+
+const getLastAlertTime = () => alertFingerprint.lastAlertTime
+
+const setAlertFingerprint = (fp, time = Date.now()) => {
+  alertFingerprint.fingerprint = fp
+  alertFingerprint.lastAlertTime = time
+}
+
+const shouldNotAlert = currentAlertFingerprint => {
+  return (
+    currentAlertFingerprint === getAlertFingerprint() &&
+    getLastAlertTime() - Date.now() < ALERT_SEND_INTERVAL
+  )
+}
+
+function getAlertTypes(alertRec, config) {
+  let alerts = []
+  if (!isActive(config)) return alerts
+
+  if (config.balance) {
+    alerts = _.concat(alerts, alertRec.general)
+  }
+
+  _.keys(alertRec.devices).forEach(function (device) {
+    if (config.balance) {
+      alerts = _.concat(alerts, alertRec.devices[device].balanceAlerts)
+    }
+
+    if (config.errors) {
+      alerts = _.concat(alerts, alertRec.devices[device].deviceAlerts)
+    }
+  })
+
+  return alerts
+}
+
+function buildAlertFingerprint(alertRec, notifications) {
+  const sms = getAlertTypes(alertRec, notifications.sms)
+  const email = getAlertTypes(alertRec, notifications.email)
+  if (sms.length === 0 && email.length === 0) return null
+
+  const smsTypes = _.map(codeDisplay, _.uniq(_.map('code', sms))).sort()
+  const emailTypes = _.map(codeDisplay, _.uniq(_.map('code', email))).sort()
+
+  const subject = _.concat(smsTypes, emailTypes).join(', ')
+  return crypto.createHash('sha256').update(subject).digest('hex')
+}
+
+function sendNoAlerts(plugins, smsEnabled, emailEnabled) {
+  const subject = '[Lamassu] All clear'
+
+  let rec = {}
+  if (smsEnabled) {
+    rec = _.set(['sms', 'body'])(subject)(rec)
+  }
+
+  if (emailEnabled) {
+    rec = _.set(['email', 'subject'])(subject)(rec)
+    rec = _.set(['email', 'body'])('No errors are reported for your machines.')(
+      rec
+    )
+  }
+
+  return plugins.sendMessage(rec)
+}
+
+module.exports = {
+  codeDisplay,
+  parseEventNote,
+  getDeviceTime,
+  checkPing,
+  isActive,
+  getAlertFingerprint,
+  getLastAlertTime,
+  setAlertFingerprint,
+  shouldNotAlert,
+  buildAlertFingerprint,
+  sendNoAlerts
+}