shelly_keep_alive.js

let shellyId = 'shellyplus1-xxxxxxxx';
let messageId = 0;
let ackId = null;

function messageIdGetter() {
  if(messageId > 99) {
    messageId = 0
  }
  
  messageId++
  
  return messageId
}

function sendMessage() {
  MQTT.publish('shellies/' + shellyId + '/keep_alive/id', JSON.stringify(messageIdGetter()))
  
  Timer.set(2000, false, checkAck)
}

function checkAck() {
  if(messageId !== ackId) {
    print('Has to reboot')
    Shelly.call('Shelly.Reboot', '', function(result, error_code, error_message) {
      if(error_code !== 0) {
        print(error_message)
      }
      else {
        print('Rebooting Now')
      }
    })
  }
}

MQTT.subscribe('shellies/' + shellyId + '/keep_alive/ack', function(topic, message) {
  ackId = JSON.parse(message)
})

Timer.set(60 * 1000, true, sendMessage, {})