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<?php
/**
 * @license http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
 * @author Hervé Guétin <[email protected]> <@herveguetin>
 * @copyright Copyright (c) 2017 Agence Soon (http://www.agence-soon.fr)
 */

namespace Soon\DataSync\Model\Data\Type;

use Magento\Framework\ObjectManagerInterface;
use Soon\DataSync\Model\Data\Type\Paq\DocReader;
use Soon\DataSync\Model\Data\Type\Paq\DocReaderFactory;

class Paq extends DataTypeAbstract
{
    const PAQ_DELIMITER = '__PAQ__';
    /**
     * @var CsvFactory
     */
    private $csvFactory;
    /**
     * @var Csv
     */
    private $csv;
    /**
     * @var ObjectManagerInterface
     */
    private $objectManager;
    /**
     * @var DocReaderFactory
     */
    private $docReaderFactory;

    public function __construct(
        CsvFactory $csvFactory,
        ObjectManagerInterface $objectManager,
        DocReaderFactory $docReaderFactory
    )
    {
        $this->csvFactory = $csvFactory;
        $this->objectManager = $objectManager;
        $this->docReaderFactory = $docReaderFactory;

        $this->initCsv();
    }

    private function initCsv()
    {
        $this->csv = $this->csvFactory->create();
        $this->csv->withHeader = false;
        $this->csv->padHeaders = false;
        $this->csv->textDelimiter = '';
        $this->csv->fieldDelimiter = "\t";
    }

    /**
     * The passed string is parsed to an array
     *
     * @param string $string
     * @return array
     */
    public function parse(string $string): array
    {
        $srcData = $this->csv->parse($string);

        /** @var DocReader $docReader */
        $header = array_shift($srcData);
        $docReader = $this->docReaderFactory->create(['exp' => $this->paqFile(), 'version' => $this->version($header)]);

        $data = array_map(function ($row) use ($docReader) {
            $subLineColIndex = ($docReader->subLineColIndex(reset($row)));
            $type = ($subLineColIndex) ? $row[$subLineColIndex] : reset($row);
            $rowHeaders = $docReader->headers($type);

            return array_combine($rowHeaders, $this->rowForCombine($row, $rowHeaders));
        }, $srcData);

        return $data;
    }

    /**
     * @return string
     */
    private function paqFile()
    {
        $file = $this->job->which('transferType')->filepath();
        $fileArr = explode('/', $file);

        return substr(end($fileArr), 0, 2);
    }

    /**
     * @param array $header
     * @return string
     */
    private function version($header)
    {
        $header = reset($header);
        preg_match('/\d*\./', $header, $header);
        $version = reset($header);
        $version = rtrim($version, '.');
        $version = ltrim($version, '0');

        return ($version == '') ? 0 : $version;
    }

    /**
     * @param array $row
     * @param array $rowHeaders
     * @return array
     */
    private function rowForCombine($row, $rowHeaders)
    {
        $diff = count($row) - count($rowHeaders);
        if ($diff > 0) {
            array_splice($row, count($row) - 1, $diff);
        }
        if ($diff < 0) {
            for ($i = 1; $i <= $diff * -1; $i++) {
                $row[] = '';
            }
        }

        return $row;
    }

    /**
     * The passed array is converted to a string
     *
     * @param array $array
     * @return string
     */
    public function convert(array $array): string
    {
        return $this->csv->convert($array);
    }
}