'use strict';

const machina = require("machina");

let parent = new machina.Fsm({
	initialState: "one",
	memory: {
		done: false
	},
	states: {
		one: {
			_onEnter: function () {
				console.log(`(${this.namespace}) Parent state 1 reached`);
				return this.transition("two");
			}
		},
		two: {
			_onEnter: function () {
				console.log(`(${this.namespace}) Parent state 2 reached`);

				return this.handle("childAction");
			},
			_child: {
				factory: function () {
					console.log("Creating child for state 2");
					return createChild();
				}
			},
			done: function () {
				if (!this.memory.done) {
					return this.transition("three");
				}
			}
		},
		three: {
			_onEnter: function () {
				console.log(`(${this.namespace}) Parent state 3 reached`);

				return this.handle("childAction");
			},
			_child: {
				factory: function () {
					console.log("Creating child for state 3");
					return createChild();
				}
			},
			done: function () {
				this.memory.done = true;
				console.log("Parent done! Returning to state 2 one last time...");
				return this.transition("two");
			}
		}
	}
});

function createChild() {
	return new machina.Fsm({
		initialState: "a",
		states: {
			a: {
				_onEnter: function () {
					console.log(`(${this.namespace}) Child state A reached`);
				},
				childAction: function () {
					return this.transition("b");
				}
			},
			b: {
				_onEnter: function () {
					console.log(`(${this.namespace}) Child state B reached`);
					return this.handle("done");
				}
			}
		}
	})
}