<?php

namespace com\fwdekker\deathnotifier\validator;

use Exception;


/**
 * Thrown if an action could not be handled because an input is invalid.
 */
class ValidationException extends Exception
{
    /**
     * @var string|null the input element that caused the exception, or `null` if no such element could be identified
     */
    public readonly ?string $target;


    /**
     * Constructs a new `ValidationException`.
     *
     * @param string $message the message to show to the user
     * @param string|null $target the input element that caused the exception, or `null` if no such element could be
     * identified
     */
    public function __construct(string $message, ?string $target = null)
    {
        parent::__construct($message);

        $this->target = $target;
    }
}