EventCollections.php

<?php
namespace Avby\Domain;

class BotEvents
{
    public const START = '/start';
    public const MY_SERVICES = 'Мои услуги';
    public const PAY = 'Оплата';

    /**
     * @return string[]
     */
    public static function getAllSupportedEvents(): array
    {
        return [
            self::START => 'onStart',
            self::MY_SERVICES => 'onMyServices',
            self::PAY => 'onPay',
        ];
    }

    /**
     * @param string $event
     *
     * @return bool
     */
    public static function isValid(string $event): bool
    {
        return array_key_exists($event, self::getAllSupportedEvents());
    }

    /**
     * @param string $event
     *
     * @return string
     */
    public static function getTechnicalEvent(string $event): string
    {
        if (!self::isValid($event)) {
            throw new \LogicException('Invalid event '. $event);
        }
        
        return self::getAllSupportedEvents()[$event];
    }
}