<?php
/**
* \Exception class for validator
*
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Framework\Validator;

use Magento\Framework\Exception\InputException;
use Magento\Framework\Phrase;
use Magento\Framework\Message\AbstractMessage;
use Magento\Framework\Message\Error;

/**
* Exception to be thrown when data validation fails
*
* @api
* @since 100.0.2
*/
class Exception extends InputException
{
/**
* @var array
*/
protected $messages = [];

/**
* Constructor
*
* @param \Magento\Framework\Phrase $phrase
* @param \Exception $cause
* @param array $messages Validation error messages
* @param int $code
*/
public function __construct(
Phrase $phrase = null,
\Exception $cause = null,
array $messages = [],
$code = 0
) {
if (!empty($messages)) {
$message = '';
foreach ($messages as $propertyMessages) {
foreach ($propertyMessages as $propertyMessage) {
if ($message) {
$message .= PHP_EOL;
}
$message .= $propertyMessage;
$this->addMessage(new Error($propertyMessage));
}
}
$phrase = new Phrase($message);
}
parent::__construct($phrase, $cause, $code);
}

/**
* Setter for message
*
* @param \Magento\Framework\Message\AbstractMessage $message
* @return $this
*/
public function addMessage(AbstractMessage $message)
{
if (!isset($this->messages[$message->getType()])) {
$this->messages[$message->getType()] = [];
}
$this->messages[$message->getType()][] = $message;
return $this;
}

/**
* Getter for messages by type or all
*
* @param string $type
* @return array
*/
public function getMessages($type = '')
{
if ('' == $type) {
$allMessages = [];
foreach ($this->messages as $messages) {
$allMessages = array_merge($allMessages, $messages);
}
return $allMessages;
}
return $this->messages[$type] ?? [];
}
}