Claudsonm\BoletoWinner\Validators\ConvenioValidator

Complexity

Total Complexity

8

Size/Duplication

Total Lines	50
Duplicated Lines	0 %

Test Coverage

Coverage

100%

Importance

Changes	1
Bugs	0	Features	0

3 Methods

Rating	Name	Duplication	Size	Complexity
A	getLastCharacter()	0	3	1
A	verifyWritableLine()	0	17	4
A	verifyBarcode()	0	15	3

<?php

namespace Claudsonm\BoletoWinner\Validators;

use Claudsonm\BoletoWinner\Convenio;

class ConvenioValidator implements Validator
{
    /**
     * {@inheritdoc}
     */
    public function verifyWritableLine(string $writableLine): bool
    {
        $blocks = str_split($writableLine, 12);
        $isModule10 = in_array($writableLine[2], Convenio::USES_MODULE_10);

        $blocksValidated = 0;
        foreach ($blocks as $block) {
            $blockLength = strlen($block) - 1;
            $blockInputNumbers = substr($block, 0, $blockLength);
            $blockVerificationDigit = $this->getLastCharacter($block);
            $digitCalculated = $isModule10 ? module10($blockInputNumbers) : module11($blockInputNumbers);
            if ($digitCalculated === $blockVerificationDigit) {
                $blocksValidated++;
            }
        }

        return 4 === $blocksValidated;
    }

    /**
     * {@inheritdoc}
     */
    public function verifyBarcode(string $barcode): bool
    {
        $effectiveValueOrReferenceIdentifier = $barcode[2];
        if (! in_array($effectiveValueOrReferenceIdentifier, Convenio::AVAILABLE_CODES)) {
            return false;
        }

        $barcodeVerificationDigit = $barcode[3];
        $blockInputNumbers = substr($barcode, 0, 3);
        $blockInputNumbers .= substr($barcode, 4);
        $digitCalculated = in_array($effectiveValueOrReferenceIdentifier, Convenio::USES_MODULE_10)
            ? module10($blockInputNumbers)
            : module11($blockInputNumbers);

        return $digitCalculated === $barcodeVerificationDigit;
    }

    /**
     * Returns the last character of the input string.
     */
    private function getLastCharacter(string $input): string
    {
        return substr($input, -1);
    }
}