class.ilPdfGenerator.php

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<?php

declare(strict_types=1);

class ilPdfGenerator
{
    private readonly ilCertificateRpcClientFactoryHelper $rpcHelper;
    private readonly ilCertificateMathJaxHelper $mathJaxHelper;
    private readonly ilCertificatePdfFileNameFactory $pdfFilenameFactory;

    public function __construct(
        private readonly ilUserCertificateRepository $certificateRepository,
        ?ilCertificateRpcClientFactoryHelper $rpcHelper = null,
        ?ilCertificatePdfFileNameFactory $pdfFileNameFactory = null,
        ?ilLanguage $lng = null,
        ?ilCertificateMathJaxHelper $mathJaxHelper = null
    ) {
        global $DIC;

        if (null === $rpcHelper) {
            $rpcHelper = new ilCertificateRpcClientFactoryHelper();
        }
        $this->rpcHelper = $rpcHelper;

        if (null === $mathJaxHelper) {
            $mathJaxHelper = new ilCertificateMathJaxHelper();
        }
        $this->mathJaxHelper = $mathJaxHelper;

        if (null === $lng) {
            $lng = $DIC->language();
        }

        if (null === $pdfFileNameFactory) {
            $pdfFileNameFactory = new ilCertificatePdfFileNameFactory($lng);
        }
        $this->pdfFilenameFactory = $pdfFileNameFactory;
    }

    public function generate(int $userCertificateId): string
    {
        $certificate = $this->certificateRepository->fetchCertificate($userCertificateId);

        return $this->createPDFScalar($certificate);
    }

    public function generateCurrentActiveCertificate(int $userId, int $objId): string
    {
        $certificate = $this->certificateRepository->fetchActiveCertificate($userId, $objId);

        return $this->createPDFScalar($certificate);
    }

    public function generateFileName(int $userId, int $objId): string
    {
        $certificate = $this->certificateRepository->fetchActiveCertificateForPresentation($userId, $objId);

        $user = ilObjectFactory::getInstanceByObjId($userId);
        if (!$user instanceof ilObjUser) {
            throw new ilException(sprintf('The usr_id "%s" does NOT reference a user', $userId));
        }

        return $this->pdfFilenameFactory->create($certificate);
    }

    private function createPDFScalar(ilUserCertificate $certificate): string
    {
        $certificateContent = $certificate->getCertificateContent();

        $certificateContent = str_replace(
            ['[BACKGROUND_IMAGE]', '[CLIENT_WEB_DIR]'],
            ['[CLIENT_WEB_DIR]' . $certificate->getBackgroundImagePath(), 'file://' . CLIENT_WEB_DIR],
            $certificateContent
        );

        $certificateContent = $this->mathJaxHelper->fillXlsFoContent($certificateContent);

        $pdf_base64 = $this->rpcHelper->ilFO2PDF('RPCTransformationHandler', $certificateContent);

        return $pdf_base64->scalar;
    }
}