CelsoNery\EanUtils\Services\Traits\EanUtil

Complexity

Total Complexity

17

Size/Duplication

Total Lines	111
Duplicated Lines	0 %

Importance

Changes	1
Bugs	0	Features	0

8 Methods

Rating	Name	Duplication	Size	Complexity
A	toEight()	0	3	1
A	fakeEan13()	0	4	1
A	isValid()	0	7	5
A	fakeEan8()	0	4	1
A	isValidEight()	0	4	1
A	toThirteen()	0	3	1
A	isValidThirteen()	0	14	3
A	fixLen()	0	8	4

<?php

namespace CelsoNery\EanUtils\Services\Traits;

/**
 * This is a Traits to Validate a EAN/GTIN
 */
trait EanUtil
{
    /**
     * Start Method to validate EAN/GTIN
     *
     * @param string $ean
     * @return bool
     */
    public function isValid(string $ean): bool
    {
        if (strlen($ean) < 8 || ((strlen($ean) > 8) && (strlen($ean) < 13))) {
            return false;
        }

        return (strlen($ean) == 8) ? $this->isValidEight($ean) : $this->isValidThirteen($ean);
    }

    /**
     * Method to validate EAN/GTIN 13
     *
     * @param string $ean
     * @return bool
     */
    private function isValidThirteen(string $ean): bool
    {
        if ((!preg_match("/^[0-9]{13}$/", $ean)) || (strlen($ean) < 13))
            return false;

        $digits = str_split($ean);

        $even = $digits[1] + $digits[3] + $digits[5] + $digits[7] + $digits[9] + $digits[11];
        $odd = $digits[0] + $digits[2] + $digits[4] + $digits[6] + $digits[8] + $digits[10];

        $result = $odd + $even * 3;
        $checkSum = 10 - $result % 10;

        return $checkSum == $digits[12];

    }

    /**
     * Method to validate EAN/GTIN 8
     *
     * @param string $ean
     * @return bool
     */
    private function isValidEight(string $ean): bool
    {
        $ean = $this->toThirteen($ean);
        return $this->isValidThirteen($ean);
    }

    /**
     * Method to generate EAN/GTIN 8 fake
     *
     * @return string
     */
    public function fakeEan8(): string
    {
        // TODO: Generate method to return a Ean8 fake
        return '';
    }

    /**
     * Method to generate EAN/GTIN 13 fake
     *
     * @return string
     */
    public function fakeEan13(): string
    {
        // TODO: Generate mehod to return a Ean13 fake
        return '';
    }

    /**
     * Method to fix length EAN/GTIN and complete with 0
     *
     * @param string $ean
     * @return string
     */
    protected function fixLen(string $ean): string
    {
        if (strlen($ean) < 8) {
            return $this->toEight($ean);
        } elseif (strlen($ean) > 8 && strlen($ean) < 13) {
            return $this->toThirteen($ean);
        } else {
            return '';
        }
    }

    /**
     * Method to fix length EAN/GTIN 8 and complete with 0
     *
     * @param string $ean
     * @return string
     */
    private function toEight(string $ean): string
    {
        return str_pad($ean, 8, '0', STR_PAD_LEFT);
    }

    /**
     * Method to fix length EAN/GTIN 13 and complete with 0
     *
     * @param string $ean
     * @return string
     */
    private function toThirteen(string $ean): string
    {
        return str_pad($ean, 13, '0', STR_PAD_LEFT);
    }
}