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<?php |
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namespace Sprain\SwissQrBill\Reference; |
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use Sprain\SwissQrBill\String\StringModifier; |
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use Sprain\SwissQrBill\Validator\Exception\InvalidQrPaymentReferenceException; |
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use Sprain\SwissQrBill\Validator\SelfValidatableInterface; |
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use Sprain\SwissQrBill\Validator\SelfValidatableTrait; |
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use Symfony\Component\Validator\Constraints as Assert; |
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use Symfony\Component\Validator\Context\ExecutionContextInterface; |
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use Symfony\Component\Validator\Mapping\ClassMetadata; |
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class QrPaymentReferenceGenerator implements SelfValidatableInterface |
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{ |
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use SelfValidatableTrait; |
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/** @var string */ |
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private $customerIdentificationNumber; |
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/** @var string */ |
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private $referenceNumber; |
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public static function generate(?string $customerIdentificationNumber, string $referenceNumber): string |
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{ |
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$qrPaymentReferenceGenerator = new self($customerIdentificationNumber, $referenceNumber); |
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return $qrPaymentReferenceGenerator->doGenerate(); |
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} |
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public function __construct(?string $customerIdentificationNumber, string $referenceNumber) |
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{ |
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if (null !== $customerIdentificationNumber) { |
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$this->customerIdentificationNumber = StringModifier::stripWhitespace($customerIdentificationNumber); |
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} |
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$this->referenceNumber = StringModifier::stripWhitespace($referenceNumber); |
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} |
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public function getCustomerIdentificationNumber(): ?string |
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{ |
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return $this->customerIdentificationNumber; |
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} |
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public function getReferenceNumber(): ?string |
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{ |
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return $this->referenceNumber; |
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} |
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public function doGenerate(): string |
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{ |
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if (!$this->isValid()) { |
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throw new InvalidQrPaymentReferenceException( |
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'The provided data is not valid to generate a qr payment reference number.' |
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); |
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} |
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$completeReferenceNumber = $this->getCustomerIdentificationNumber(); |
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$completeReferenceNumber .= str_pad($this->getReferenceNumber(), 26 - strlen($completeReferenceNumber), '0', STR_PAD_LEFT); |
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$completeReferenceNumber .= $this->modulo10($completeReferenceNumber); |
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return $completeReferenceNumber; |
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} |
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public static function loadValidatorMetadata(ClassMetadata $metadata): void |
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{ |
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$metadata->addPropertyConstraints('customerIdentificationNumber', [ |
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// Only numbers are allowed (including leading zeros) |
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new Assert\Regex([ |
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'pattern' => '/^\d*$/', |
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'match' => true |
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]), |
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new Assert\Length([ |
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'max' => 11 |
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]), |
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]); |
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$metadata->addPropertyConstraints('referenceNumber', [ |
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// Only numbers are allowed (including leading zeros) |
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new Assert\Regex([ |
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'pattern' => '/^\d*$/', |
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'match' => true |
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]), |
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new Assert\NotBlank() |
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]); |
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$metadata->addConstraint(new Assert\Callback('validateFullReference')); |
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} |
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public function validateFullReference(ExecutionContextInterface $context): void |
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{ |
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if (strlen($this->customerIdentificationNumber) + strlen($this->referenceNumber) > 26) { |
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$context->buildViolation('The length of customer identification number + reference number may not exceed 26 characters in total.') |
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->addViolation(); |
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} |
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} |
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private function modulo10(string $number): int |
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{ |
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$table = array(0, 9, 4, 6, 8, 2, 7, 1, 3, 5); |
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$next = 0; |
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for ($i = 0; $i < strlen($number); $i++) { |
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$next = $table[($next + intval(substr($number, $i, 1))) % 10]; |
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} |
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return (10 - $next) % 10; |
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} |
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} |
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sprain /
php-swiss-qr-bill
