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<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\SalesRule\Model\Coupon;
/**
* SalesRule Mass Coupon Generator
*
* @author Magento Core Team <[email protected]>
*/
class Massgenerator extends \Magento\Framework\Model\AbstractModel implements
\Magento\SalesRule\Model\Coupon\CodegeneratorInterface
{
/**
* Maximum probability of guessing the coupon on the first attempt
*/
const MAX_PROBABILITY_OF_GUESSING = 0.25;
/**
* Number of attempts to generate
*/
const MAX_GENERATE_ATTEMPTS = 10;
/**
* Count of generated Coupons
* @var int
*/
protected $generatedCount = 0;
/**
* @var array
*/
protected $generatedCodes = [];
/**
* Sales rule coupon
*
* @var \Magento\SalesRule\Helper\Coupon
*/
protected $salesRuleCoupon;
/**
* @var \Magento\Framework\Stdlib\DateTime\DateTime
*/
protected $date;
/**
* @var \Magento\SalesRule\Model\CouponFactory
*/
protected $couponFactory;
/**
* @var \Magento\Framework\Stdlib\DateTime
*/
protected $dateTime;
/**
* @param \Magento\Framework\Model\Context $context
* @param \Magento\Framework\Registry $registry
* @param \Magento\SalesRule\Helper\Coupon $salesRuleCoupon
* @param \Magento\SalesRule\Model\CouponFactory $couponFactory
* @param \Magento\Framework\Stdlib\DateTime\DateTime $date
* @param \Magento\Framework\Stdlib\DateTime $dateTime
* @param \Magento\Framework\Model\ResourceModel\AbstractResource $resource
* @param \Magento\Framework\Data\Collection\AbstractDb $resourceCollection
* @param array $data
*/
public function __construct(
\Magento\Framework\Model\Context $context,
\Magento\Framework\Registry $registry,
\Magento\SalesRule\Helper\Coupon $salesRuleCoupon,
\Magento\SalesRule\Model\CouponFactory $couponFactory,
\Magento\Framework\Stdlib\DateTime\DateTime $date,
\Magento\Framework\Stdlib\DateTime $dateTime,
\Magento\Framework\Model\ResourceModel\AbstractResource $resource = null,
\Magento\Framework\Data\Collection\AbstractDb $resourceCollection = null,
array $data = []
) {
$this->salesRuleCoupon = $salesRuleCoupon;
$this->date = $date;
$this->couponFactory = $couponFactory;
$this->dateTime = $dateTime;
parent::__construct($context, $registry, $resource, $resourceCollection, $data);
}
/**
* Initialize resource
*
* @return void
*/
protected function _construct()
{
$this->_init(\Magento\SalesRule\Model\ResourceModel\Coupon::class);
}
/**
* Generate coupon code
*
* @return string
*/
public function generateCode()
{
$format = $this->getFormat();
if (empty($format)) {
$format = \Magento\SalesRule\Helper\Coupon::COUPON_FORMAT_ALPHANUMERIC;
}
$splitChar = $this->getDelimiter();
$charset = $this->salesRuleCoupon->getCharset($format);
$code = '';
$charsetSize = count($charset);
$split = max(0, (int)$this->getDash());
$length = max(1, (int)$this->getLength());
for ($i = 0; $i < $length; ++$i) {
$char = $charset[\Magento\Framework\Math\Random::getRandomNumber(0, $charsetSize - 1)];
if (($split > 0) && (($i % $split) === 0) && ($i !== 0)) {
$char = $splitChar . $char;
}
$code .= $char;
}
return $this->getPrefix() . $code . $this->getSuffix();
}
/**
* Retrieve delimiter
*
* @return string
*/
public function getDelimiter()
{
if ($this->hasData('delimiter')) {
return $this->getData('delimiter');
} else {
return $this->salesRuleCoupon->getCodeSeparator();
}
}
/**
* Generate Coupons Pool
*
* @throws \Magento\Framework\Exception\LocalizedException
* @return $this
*/
public function generatePool()
{
$this->generatedCount = 0;
$this->generatedCodes = [];
$size = $this->getQty();
$maxAttempts = $this->getMaxAttempts() ? $this->getMaxAttempts() : self::MAX_GENERATE_ATTEMPTS;
$this->increaseLength();
/** @var $coupon \Magento\SalesRule\Model\Coupon */
$coupon = $this->couponFactory->create();
$nowTimestamp = $this->dateTime->formatDate($this->date->gmtTimestamp());
for ($i = 0; $i < $size; $i++) {
$attempt = 0;
do {
if ($attempt >= $maxAttempts) {
throw new \Magento\Framework\Exception\LocalizedException(
__('We cannot create the requested Coupon Qty. Please check your settings and try again.')
);
}
$code = $this->generateCode();
++$attempt;
} while ($this->getResource()->exists($code));
$coupon->setId(null)
->setRuleId($this->getRuleId())
->setUsageLimit($this->getUsesPerCoupon())
->setUsagePerCustomer($this->getUsagePerCustomer())
->setCreatedAt($nowTimestamp)
->setType(\Magento\SalesRule\Helper\Coupon::COUPON_TYPE_SPECIFIC_AUTOGENERATED)
->setCode($code)
->save();
$this->generatedCount += 1;
$this->generatedCodes[] = $code;
}
return $this;
}
/**
* Increase the length of Code if probability is low
*
* @return void
*/
protected function increaseLength()
{
$maxProbability = $this->getMaxProbability() ? $this->getMaxProbability() : self::MAX_PROBABILITY_OF_GUESSING;
$chars = count($this->salesRuleCoupon->getCharset($this->getFormat()));
$size = $this->getQty();
$length = (int)$this->getLength();
$maxCodes = pow($chars, $length);
$probability = $size / $maxCodes;
if ($probability > $maxProbability) {
do {
$length++;
$maxCodes = pow($chars, $length);
$probability = $size / $maxCodes;
} while ($probability > $maxProbability);
$this->setLength($length);
}
}
/**
* Validate data input
*
* @param array $data
* @return bool
*/
public function validateData($data)
{
return !empty($data)
&& !empty($data['qty'])
&& !empty($data['rule_id'])
&& !empty($data['length'])
&& !empty($data['format'])
&& (int)$data['qty'] > 0
&& (int)$data['rule_id'] > 0
&& (int)$data['length'] > 0;
}
/**
* Return the generated coupon codes
*
* @return array
*/
public function getGeneratedCodes()
{
return $this->generatedCodes;
}
/**
* Retrieve count of generated Coupons
*
* @return int
*/
public function getGeneratedCount()
{
return $this->generatedCount;
}
}