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<?php |
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namespace Claudsonm\BoletoWinner\Validators; |
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class BoletoValidator implements Validator |
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{ |
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/** |
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* {@inheritdoc} |
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*/ |
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public function verifyWritableLine(string $writableLine): bool |
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{ |
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$blocks = [ |
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substr($writableLine, 0, 10), |
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substr($writableLine, 10, 11), |
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substr($writableLine, 21, 11), |
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]; |
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$blocksValidated = 0; |
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foreach ($blocks as $block) { |
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$blockLength = strlen($block) - 1; |
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$blockInputNumbers = substr($block, 0, $blockLength); |
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$blockVerificationDigit = $this->getLastCharacter($block); |
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if (module10($blockInputNumbers) === $blockVerificationDigit) { |
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$blocksValidated++; |
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} |
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} |
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return 3 === $blocksValidated; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function verifyBarcode(string $barcode): bool |
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{ |
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$barcodeVerificationDigit = substr($barcode, 4, 1); |
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$blockInputNumbers = substr($barcode, 0, 4); |
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$blockInputNumbers .= substr($barcode, 5); |
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return $this->calculateBarcodeDigit($blockInputNumbers) === $barcodeVerificationDigit; |
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} |
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/** |
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* Returns the last character of the input string. |
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*/ |
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private function getLastCharacter(string $input): string |
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{ |
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return substr($input, -1); |
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} |
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/** |
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* Computes the barcode verification digit. |
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*/ |
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private function calculateBarcodeDigit(string $inputNumbers): string |
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{ |
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$digit = module11($inputNumbers); |
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if ('0' === $digit) { |
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return '1'; |
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} |
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return $digit; |
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} |
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} |
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claudsonm /
boleto-winner
