<?php

namespace common\helpers;

final class GuestDeclarationDraftStatus
{
    const DRAFT = 'draft';
    const PENDING_PAYMENT = 'pending_payment';
    const PROCESSING = 'processing';
    const COMPLETED = 'completed';
    const PAYMENT_FAILED = 'payment_failed';
    const PAYMENT_INITIALIZING = 'payment_initializing';
    const EXPIRED = 'expired';
    const MANUAL_REVIEW = 'manual_review';

    private const TRANSITIONS = [
        self::DRAFT => [self::PAYMENT_INITIALIZING, self::EXPIRED],
        self::PENDING_PAYMENT => [self::PROCESSING, self::PAYMENT_FAILED, self::PAYMENT_INITIALIZING, self::EXPIRED, self::MANUAL_REVIEW],
        self::PAYMENT_INITIALIZING => [self::DRAFT, self::PENDING_PAYMENT, self::MANUAL_REVIEW],
        self::PROCESSING => [self::COMPLETED, self::MANUAL_REVIEW],
        self::PAYMENT_FAILED => [self::PAYMENT_INITIALIZING, self::EXPIRED],
        self::COMPLETED => [],
        self::EXPIRED => [],
        self::MANUAL_REVIEW => [],
    ];

    public static function all(): array
    {
        return array_keys(self::TRANSITIONS);
    }

    public static function canTransition(string $from, string $to): bool
    {
        return in_array($to, self::TRANSITIONS[$from] ?? [], true);
    }

    public static function isExpired(?int $expiresAt, ?int $now = null): bool
    {
        return $expiresAt !== null && $expiresAt <= ($now ?? time());
    }
}