<?php

require_once __DIR__."/../vendor/autoload.php";

use NoccyLabs\StateMachine\StateTrait;
use NoccyLabs\StateMachine\StateMachineTrait;
use NoccyLabs\StateMachine\Attributes\ValidTransitions;

enum OrderStatus {
    use StateTrait;
    #[ValidTransitions([OrderStatus::PROCESSING])]
    case PENDING;
    #[ValidTransitions([OrderStatus::PROCESSED,OrderStatus::PENDING])]
    case PROCESSING;
    #[ValidTransitions([OrderStatus::SHIPPED])]
    case PROCESSED;
    #[NoValidTransitions]
    case SHIPPED;
}

class Order {
    use StateMachineTrait;
    public function __construct(
        private OrderStatus $status
    )
    {
    }
    public function setStatus(OrderStatus $status): self
    {
        if (!$this->isValidTransition($this->status, $status)) {
            throw new \RuntimeException("Invalid transition");
        }
        $this->status = $status;
        return $this;
    }
    public function getStatus(): OrderStatus
    {
        return $this->status;
    }
}

$os = new Order(OrderStatus::PENDING);
var_dump($os->getStatus());

try {
    $os->setStatus(OrderStatus::PROCESSED);
} catch (\Exception|InvalidTransitionException $e) {

}
var_dump($os->getStatus());

$os->setStatus(OrderStatus::PROCESSING);
var_dump($os->getStatus());