import { createMachine } from "xstate";

export const ghostMachine = createMachine(
  {
    id: "Ghost 👻",
    initial: "Wandering maze",
    states: {
      "Wandering maze": {
        on: {
          "Lose Pac-Man": {
            target: "Chase Pac-Man",
          },
          "Pac-Man eats power pill": {
            target: "Run away from Pac-Man",
          },
        },
      },
      "Chase Pac-Man": {
        on: {
          "Pac-Man eats power pill": {
            target: "Run away from Pac-Man",
          },
        },
      },
      "Run away from Pac-Man": {
        on: {
          "power pill wears off": {
            target: "Wandering maze",
          },
          "eaten by Pac-Man": {
            target: "Return to base",
          },
        },
      },
      "Return to base": {
        on: {
          "reach base": {
            target: "Wandering maze",
          },
        },
      },
    },
  }
);

import { createActor } from 'xstate';
import { ghostMachine } from './ghostMachine';

const actor = createActor(ghostMachine);

actor.subscribe(state => {
  console.log(state);
});

actor.start();

actor.send({ type: 'Lose Pac-Man' });
// { value: 'Chase Pac-Man', ... }

import { getShortestPaths } from '@xstate/graph';
import { someMachine } from './someMachine';

// Finds all the shortest paths from
// initial state to other states
const shortestPaths = getShortestPaths(someMachine);