Brazanation\Documents\StateRegistration\Goias

Complexity

Total Complexity

12

Size/Duplication

Total Lines	107
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	2

Test Coverage

Coverage

96.88%

Importance

Changes	1
Bugs	0	Features	1

7 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	4	1
A	setCurrentDigit()	0	6	1
A	calculateDigit()	0	18	2
A	isMagicNumber()	0	4	1
A	fixedDigitForMagicNumber()	0	8	3
A	discoverDigitToReplace()	0	9	3
A	normalizeNumber()	0	7	1

<?php

namespace Brazanation\Documents\StateRegistration;

use Brazanation\Documents\DigitCalculator;

final class Goias extends State
{
    const LABEL = 'Goias';

    const REGEX = '/^(1[015])(\d{3})(\d{3})(\d{1})$/';

    const FORMAT = '$1.$2.$3-$4';

    const LENGTH = 9;

    const DIGITS_COUNT = 1;

    /**
     * @var string
     */
    private $digit;

    public function __construct()
    {
        parent::__construct(self::LABEL, self::LENGTH, self::DIGITS_COUNT, self::REGEX, self::FORMAT);
    }

    /**
     *
     * @param string $digit
     *
     * @return Goias
     */
    private function setCurrentDigit($digit)
    {
        $this->digit = $digit;

        return $this;
    }

    /**
     * {@inheritdoc}
     *
     * @see http://www.sintegra.gov.br/Cad_Estados/cad_GO.html
     */
    public function calculateDigit($baseNumber)
    {
        $digitToReplace = $this->discoverDigitToReplace(intval($baseNumber));

        $calculator = new DigitCalculator($baseNumber);
        $calculator->useComplementaryInsteadOfModule();
        $calculator->replaceWhen($digitToReplace, 10);
        $calculator->replaceWhen('0', 11);
        $calculator->withModule(DigitCalculator::MODULE_11);

        $digit = $calculator->calculate();

        if ($this->isMagicNumber($baseNumber)) {
            return $this->fixedDigitForMagicNumber($digit);
        }

        return "{$digit}";
    }

    /**
     * A bizarre rule for this number(11094402).
     *
     * Default digit is 0, but could be 1 too :(
     *
     * @param string $number A magic base number.
     *
     * @return bool Returns true if number is magic, otherwise false.
     */
    private function isMagicNumber($number)
    {
        return $number == '11094402';
    }

    /**
     * A big workaround for StateRegistration(11094402)
     *
     * @param string $digit
     *
     * @return string
     */
    private function fixedDigitForMagicNumber($digit)
    {
        if ($digit == $this->digit && $digit == '0') {
            return '0';
        }

        return '1';
    }

    private function discoverDigitToReplace($number)
    {
        $digitToReplace = '0';
        if ((10103105 <= $number) && ($number <= 10119997)) {
            $digitToReplace = '1';
        }

        return $digitToReplace;
    }

    public function normalizeNumber($number)
    {
        $number = parent::normalizeNumber($number);
        $this->setCurrentDigit(substr($number, -($this->getNumberOfDigits())));

        return $number;
    }
}