class.ilCertificatePdfAction.php

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<?php

declare(strict_types=1);

class ilCertificatePdfAction
{
    private readonly ilCertificateUtilHelper $ilUtilHelper;
    private readonly ilErrorHandling $errorHandler;

    public function __construct(
        private readonly ilPdfGenerator $pdfGenerator,
        ?ilCertificateUtilHelper $ilUtilHelper = null,
        private readonly string $translatedErrorText = '',
        ?ilErrorHandling $errorHandler = null
    ) {
        if (null === $ilUtilHelper) {
            $ilUtilHelper = new ilCertificateUtilHelper();
        }
        $this->ilUtilHelper = $ilUtilHelper;

        if (null === $errorHandler) {
            global $DIC;
            $errorHandler = $DIC['ilErr'];
        }
        $this->errorHandler = $errorHandler;
    }

    public function createPDF(int $userId, int $objectId): string
    {
        return $this->pdfGenerator->generateCurrentActiveCertificate($userId, $objectId);
    }

    public function downloadPdf(int $userId, int $objectId): string
    {
        try {
            $pdfScalar = $this->createPDF($userId, $objectId);

            $fileName = $this->pdfGenerator->generateFileName($userId, $objectId);

            $this->ilUtilHelper->deliverData(
                $pdfScalar,
                $fileName,
                'application/pdf'
            );
        } catch (ilException) {
            $this->errorHandler->raiseError($this->translatedErrorText, $this->errorHandler->MESSAGE);
            return '';
        }

        return $pdfScalar;
    }
}