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<?php
/**
 * Copyright © Extmag. All rights reserved.
 */

namespace Extmag\Shiplab\Helper;

use Magento\Framework\App\Filesystem\DirectoryList;
use Magento\Framework\Exception\FileSystemException;
use Magento\Framework\Exception\LocalizedException;
use Magento\Framework\Math\Random;
use TCPDI;
use Zend_Pdf;
use Zend_Pdf_Exception;
use Zend_Pdf_Image;
use Zend_Pdf_Page;

class Pdf extends Filer
{
    /**
     * @param \Extmag\Shiplab\Model\Label $model
     * @param $documentType
     * @param null $pdf
     * @param null $tnFilter
     * @return bool|TCPDI|null
     * @throws FileSystemException
     * @throws LocalizedException
     * @throws Zend_Pdf_Exception
     */
    public function getPdfPages($model, $documentType, $pdf = null, $tnFilter = null)
    {
        if (empty($pdf)) {
            $pdf = new TCPDI(PDF_PAGE_ORIENTATION, PDF_UNIT, PDF_PAGE_FORMAT, true, 'UTF-8', false);
        }

        $carrierCode = $model->getCarrierCode();
        if ($documentType == 'label') {
            $trackingNumber = $model->getTrackingNumbers();
            foreach ($trackingNumber as $track) {
                if (empty($tnFilter) || $tnFilter == $track) {
                    $labelFileString = '';
                    $labelPath = $this->url->getMediaPath() . '/'
                        . $this->url->getExtmagMediaPath($carrierCode, $documentType, 'gif') . $track . '.gif';
                    if ($this->driver->isFile($labelPath)) {
                        $labelFileString = $this->driver->fileGetContents($labelPath);
                        if ($labelFileString) {
                            $pdfZend = new Zend_Pdf();
                            $pdfZend->properties['Title'] = 'Shipping Label';
                            $pdfZend->properties['Author'] = 'Extmag';
                            $pdfZend->properties['Producer'] = 'Zend PDF';
                            $pdfZend->properties['Creator'] = 'Zend PDF';
                            $pdfZend->properties['CreationDate'] = 'D:' . date('YmdHis', time());
                            $pdfZend->properties['ModDate'] = 'D:' . date('YmdHis', time());
                            $directory = $this->filesystem->getDirectoryWrite(DirectoryList::TMP);
                            $directory->create();

                            $image = imagecreatefromstring($labelFileString);

                            if (!$image) {
                                return false;
                            }

                            imageinterlace($image, 0);

                            $tmpFileName = $directory->getAbsolutePath(
                                'extmag_labels_' . uniqid(Random::getRandomNumber()) . time() . '.png'
                            );

                            imagepng($image, $tmpFileName);

                            $xSize = imagesx($image);
                            $ySize = imagesy($image);

                            $page = new Zend_Pdf_Page($xSize, $ySize);

                            $image = Zend_Pdf_Image::imageWithPath($tmpFileName);
                            $page->drawImage($image, 0, 0, $xSize, $ySize);

                            $directory->delete($directory->getRelativePath($tmpFileName));

                            if (is_resource($image)) {
                                imagedestroy($image);
                            }

                            $pdfZend->pages[] = $page;
                            $labelFileString = $pdfZend->render();
                        }
                    } else {
                        $labelPath = $this->url->getMediaPath() . '/'
                            . $this->url->getExtmagMediaPath($carrierCode, $documentType, 'pdf') . $track . '.pdf';
                        if ($this->driver->isFile($labelPath)) {
                            $labelFileString = $this->getFileData($carrierCode, $track, 'pdf', $documentType);
                        }
                    }

                    $this->mergePages($pdf, $labelFileString);
                }
            }
        } else {
            $masterId = $model->getMasterId();
            for ($i = 1; $i < 300; $i++) {
                $labelFileString = $this->getFileData(
                    $carrierCode,
                    $masterId . ($i == 1 ? '' : '-' . $i),
                    'pdf',
                    $documentType
                );
                if ($labelFileString) {
                    $this->mergePages($pdf, $labelFileString);
                } else {
                    break;
                }
            }
        }

        return $pdf;
    }

    /**
     * @param $pdf
     * @param $data
     */
    protected function mergePages(&$pdf, $data)
    {
        if (!empty($data)) {
            $pagecount = $pdf->setSourceData($data);
            for ($i = 1; $i <= $pagecount; $i++) {
                $tplidx = $pdf->importPage($i);
                $size = $pdf->getTemplatesize($tplidx);
                $orientation = ($size['w'] > $size['h']) ? 'L' : 'P';
                $pdf->AddPage($orientation);
                $pdf->setPageFormatFromTemplatePage($i, $orientation);
                $pdf->useTemplate($tplidx);
                $pdf->importAnnotations($i);
            }
        }
    }
}