Generated by XState Viz: https://xstate.js.org/viz

machine.js

const RETRY_INTERVAL = 2000;
const MAX_RETRIES = 3;

const initHardwareState = "initHardware";
const connectNetworkState = "connectNetwork";
const provisionState = "provision";
const retryState = "retry";
const fatalState = "fatal";
const connectedState = "connected";

const SHUTDOWN = "SHUTDOWN";
const T_SHUTDOWN = { type: SHUTDOWN };

const INIT_HARDWARE_COMPLETE = "INIT_HARDWARE_COMPLETE";
const T_INIT_HARDWARE_COMPLETE = { type: INIT_HARDWARE_COMPLETE };

const WIFI_CONNECTED = "WIFI_CONNECTED";
const T_WIFI_CONNECTED = { type: WIFI_CONNECTED };

const IOT_CONNECTED = "IOT_CONNECTED";
const T_IOT_CONNECTED = { type: IOT_CONNECTED };

const READY = "READY";
const T_READY = { type: READY };

const ERROR = "ERROR";
const T_ERROR = { type: ERROR };

const NETWORK_DISCONNECTED = "NETWORK_DISCONNECTED";
const T_NETWORK_DISCONNECTED = { type: NETWORK_DISCONNECTED };

const incrementRetries = 
  assign({
    retries: ctx => ctx.retries + 1,
  });
const resetRetries = assign({ retries: ctx => (ctx.retries = 0) });

const condHaveRetries = (ctx, _) => ctx.retries < MAX_RETRIES;
const condHaveNoRetries = (ctx, _) => ctx.retries >= MAX_RETRIES;

const defaultContext = {
  retries: 0,
};

const hardwareMachineDef = {
  id: "Hardware",
  initial: initHardwareState,
  context: {
    retries: 0,
  },
  states: {
    [initHardwareState]: {
      on: {
        [INIT_HARDWARE_COMPLETE]: { target: connectNetworkState, actions: "resetRetries" },
        [ERROR]: { target: retryState, actions: "incrementRetries" },
      },
    },
    [connectNetworkState]: {
      on: {
        [WIFI_CONNECTED]: { target: provisionState, actions: "resetRetries" },
        [ERROR]: { target: retryState, actions: "incrementRetries" },
      },
    },
    [provisionState]: {
      on: {
        [IOT_CONNECTED]: { target: connectedState, actions: "resetRetries" },
        [ERROR]: { target: retryState, actions: "incrementRetries" },
      },
    },
    [retryState]: {
      after: {
        [RETRY_INTERVAL]: { target: initHardwareState, cond: "condHaveRetries" },
        0: { target: fatalState, cond: "condHaveNoRetries" },
      },
    },
    [fatalState]: {
      type: "final",
      data: { error: "Hardware Failure" },
    },
    [connectedState]: {
      // activities: [activities.monitorNetwork.name],
      on: {
        [NETWORK_DISCONNECTED]: { target: initHardwareState },
      },
    },
  },
};

const hardwareMachineOpts = {
  actions: {
    incrementRetries,
    resetRetries,
  },
  guards: {
    condHaveNoRetries,
    condHaveRetries,
  },
};

const hardwareMachine = Machine(hardwareMachineDef, hardwareMachineOpts);