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<?php |
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namespace Brazanation\Documents; |
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use Brazanation\Documents\Exception\InvalidDocument as InvalidArgumentException; |
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final class Cnh implements DocumentInterface |
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{ |
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const LENGTH = 11; |
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11
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const LABEL = 'CNH'; |
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const REGEX = '/^([\d]{3})([\d]{3})([\d]{4})([\d]{1})$/'; |
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/** |
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* @var string |
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*/ |
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private $cnh; |
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/** |
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* Cnh constructor. |
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* |
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* @param string $cnh Only accept numbers |
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*/ |
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public function __construct($cnh) |
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{ |
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$cnh = preg_replace('/[\D]/', '', $cnh); |
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$this->validate($cnh); |
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$this->cnh = $cnh; |
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} |
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/** |
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* Check if CNH is not empty and is a valid number. |
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* |
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* @param string $number |
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* |
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* @throws InvalidArgumentException when CNH is empty |
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* @throws InvalidArgumentException when CNH is not valid number |
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*/ |
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private function validate($number) |
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{ |
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if (empty($number)) { |
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throw InvalidArgumentException::notEmpty(static::LABEL); |
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} |
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if (!$this->isValidCV($number)) { |
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throw InvalidArgumentException::isNotValid(static::LABEL, $number); |
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} |
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} |
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/** |
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* Validates CNH is a valid number. |
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* |
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* @param string $number A number to be validate. |
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* |
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* @return bool Returns true if it is a valid number, otherwise false. |
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*/ |
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private function isValidCV($number) |
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{ |
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$isRepeated = preg_match("/^{$number[0]}{" . static::LENGTH . '}$/', $number); |
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if (strlen($number) != static::LENGTH || $isRepeated) { |
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return false; |
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} |
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$baseNumber = substr($number, 0, -2); |
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$firstDigit = $this->calculateFirstDigit($baseNumber); |
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$secondDigit = $this->calculateSecondDigit("{$baseNumber}"); |
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return "{$firstDigit}{$secondDigit}" === substr($number, -2); |
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} |
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/** |
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* Formats CNH number |
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* |
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* @return string Returns formatted number. |
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*/ |
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public function format() |
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{ |
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return preg_replace('/[^\d]/', '', $this->cnh); |
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} |
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/** |
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* Returns the CNH number |
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* |
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* @return string |
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*/ |
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public function __toString() |
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{ |
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return $this->cnh; |
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} |
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private function calculateFirstDigit($number) |
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{ |
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$calculator = new DigitCalculator($number); |
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$calculator->withMultipliersInterval(1, 9); |
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$calculator->replaceWhen('0', 10, 11); |
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$calculator->withModule(DigitCalculator::MODULE_11); |
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$firstDigit = $calculator->calculate(); |
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return "{$firstDigit}"; |
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} |
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private function calculateSecondDigit($number) |
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{ |
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$calculator = new DigitCalculator($number); |
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$calculator->withMultipliers([9, 8, 7, 6, 5, 4, 3, 2, 1]); |
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$calculator->replaceWhen('0', 10, 11); |
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$calculator->withModule(DigitCalculator::MODULE_11); |
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$secondDigit = $calculator->calculate(); |
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return "{$secondDigit}"; |
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} |
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} |
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brazanation /
php-documents
