ilCertificateTemplatePreviewAction.php

Go to the documentation of this file.

<?php
 
declare(strict_types=1);
 
use ILIAS\ResourceStorage\Identification\ResourceIdentification;
use ILIAS\ResourceStorage\Services as IRSS;
use ILIAS\Language\Language;
 
class ilCertificateTemplatePreviewAction
{
    private readonly ilObjUser $user;
    private readonly Language $lng;
    private readonly ilCertificateUtilHelper $utilHelper;
    private readonly ilCertificateUserDefinedFieldsHelper $userDefinedFieldsHelper;
    private readonly ilCertificateRpcClientFactoryHelper $rpcClientFactoryHelper;
    private readonly ilCertificatePdfFileNameFactory $pdfFileNameFactory;
 
    public function __construct(
        private readonly ilCertificateTemplateRepository $templateRepository,
        private readonly ilCertificatePlaceholderValues $placeholderValuesObject,
        private readonly IRSS $irss,
        private readonly string $rootDirectory = CLIENT_WEB_DIR,
        ?ilObjUser $user = null,
        ?Language $lng = null,
        ?ilCertificateUtilHelper $utilHelper = null,
        ?ilCertificateUserDefinedFieldsHelper $userDefinedFieldsHelper = null,
        ?ilCertificateRpcClientFactoryHelper $rpcClientFactoryHelper = null,
        ?ilCertificatePdfFileNameFactory $pdfFileNameFactory = null
    ) {
        global $DIC;
        if (null === $user) {
            $user = $DIC->user();
        }
        $this->user = $user;
 
        if (null === $lng) {
            $lng = $DIC->language();
        }
        $this->lng = $lng;
 
        if (null === $utilHelper) {
            $utilHelper = new ilCertificateUtilHelper();
        }
        $this->utilHelper = $utilHelper;
 
        if (null === $userDefinedFieldsHelper) {
            $userDefinedFieldsHelper = new ilCertificateUserDefinedFieldsHelper();
        }
        $this->userDefinedFieldsHelper = $userDefinedFieldsHelper;
 
        if (null === $rpcClientFactoryHelper) {
            $rpcClientFactoryHelper = new ilCertificateRpcClientFactoryHelper();
        }
        $this->rpcClientFactoryHelper = $rpcClientFactoryHelper;
 
        if (null === $pdfFileNameFactory) {
            $pdfFileNameFactory = new ilCertificatePdfFileNameFactory($DIC->language());
        }
        $this->pdfFileNameFactory = $pdfFileNameFactory;
    }
 
    public function createPreviewPdf(int $objectId): void
    {
        $template = $this->templateRepository->fetchCurrentlyUsedCertificate($objectId);
 
        $xslfo = $template->getCertificateContent();
 
        $xslfo = $this->exchangeCertificateVariables($xslfo, $template, $objectId);
 
        $pdf_base64 = $this->rpcClientFactoryHelper
            ->ilFO2PDF('RPCTransformationHandler', $xslfo)
        ;
 
        $pdfPresentation = new ilUserCertificatePresentation(
            $template->getObjId(),
            $template->getObjType(),
            null,
            '',
            ''
        );
 
        $this->utilHelper->deliverData(
            $pdf_base64->scalar,
            $this->pdfFileNameFactory->create($pdfPresentation),
            'application/pdf'
        );
    }
 
    private function exchangeCertificateVariables(
        string $certificate_text,
        ilCertificateTemplate $template,
        int $objectId
    ): string {
        $insert_tags = $this->placeholderValuesObject->getPlaceholderValuesForPreview($this->user->getId(), $objectId);
 
        foreach ($this->getCustomCertificateFields() as $value) {
            $insert_tags[$value['ph']] = $this->utilHelper->prepareFormOutput($value['name']);
        }
 
        foreach ($insert_tags as $placeholderVariable => $value) {
            $certificate_text = str_replace('[' . $placeholderVariable . ']', $value, $certificate_text);
        }
 
        $certificate_text = str_replace(
            '[CLIENT_WEB_DIR]',
            'file://' . $this->rootDirectory,
            $certificate_text
        );
 
        $identification = $this->irss->manage()->find($template->getBackgroundImageIdentification());
        if ($identification instanceof ResourceIdentification) {
            $backgroundImagePath = $this->irss->consume()->src($identification)->getSrc(true);
        }
 
        return str_replace(
            '[BACKGROUND_IMAGE]',
            $backgroundImagePath ?? '',
            $certificate_text
        );
    }
 
    private function getCustomCertificateFields(): array
    {
        $fds = $this->userDefinedFieldsHelper->getFields();
 
        $fields = [];
        foreach ($fds as $f) {
            $fields[$f->getIdentifier()] = [
                'name' => $f->getLabel($this->lng),
                'ph' => '[#' . str_replace(' ', '_', strtoupper($f->getLabel($this->lng))) . ']'
            ];
        }
 
        return $fields;
    }
}