Be Factur-x ready

[williamdes]

What is Factur-x ?

related tools:

• https://github.com/akretion/factur-x

Related issue on TCPDF: tecnickcom/TCPDF#578 (no progress)

cc @Starfox64
Using the work from #3269 for PDF/A
Currently this are the errors I have to solve (https://services.fnfe-mpe.org):
Vera PDF only reports: Specification: ISO 19005-3:2012, Clause: 6.2.11.4.1, Test number: 1

Spec. ISO_19005_3 clause 6.2.11.4 test 1
PDF/A-3 error
The font programs for all fonts used for rendering within a conforming file shall be embedded within that file, as defined in ISO 32000-1:2008, 9.9.
Level: CosDocument
Context:
root/document[0]/pages[0](6 0 obj PDPage)/contentStream[0](7 0 obj PDContentStream)/operators[818]/font[0](Helvetica-Bold)
root/document[0]/pages[0](6 0 obj PDPage)/contentStream[0](7 0 obj PDContentStream)/operators[853]/font[0](Helvetica)
Missing /Names/EmbeddedFiles in PDF Catalog
PDF/A-3 error
Required tag 'DocumentType' missing
XMP error
Missing tag /x:xmpmeta/rdf:RDF/rdf:Description/fx:DocumentType in XMP Metadata (can also be set via an attribute 'DocumentType' of the tag '/x:xmpmeta/rdf:RDF/rdf:Description')
Required tag 'DocumentFileName' missing
XMP error
Missing tag /x:xmpmeta/rdf:RDF/rdf:Description/fx:DocumentFileName in XMP Metadata (can also be set via an attribute 'DocumentFileName' of the tag '/x:xmpmeta/rdf:RDF/rdf:Description')
Required tag 'Version' missing
XMP error
Missing tag /x:xmpmeta/rdf:RDF/rdf:Description/fx:Version in XMP Metadata (can also be set via an attribute 'Version' of the tag '/x:xmpmeta/rdf:RDF/rdf:Description')
Required tag 'ConformanceLevel' missing
XMP error
Missing tag /x:xmpmeta/rdf:RDF/rdf:Description/fx:ConformanceLevel in XMP Metadata (can also be set via an attribute 'ConformanceLevel' of the tag '/x:xmpmeta/rdf:RDF/rdf:Description')

[williamdes]

I managed to embed a Factur-x xml file
The compliance is not great but that's a start

Using https://github.com/easybill/zugferd-php

        $result = DocumentGeneratorService::generate($command);
        $pdf = InvoiceServiceImpl::htmlToPDF($result);
        $canvas = $pdf->getCanvas();

        $facturXFile = '';
        if ($canvas instanceof CPDF) {

            $doc = new CrossIndustryInvoice();
            $ctx = $doc->exchangedDocumentContext = new ExchangedDocumentContext();
            $ctx->documentContextParameter = DocumentContextParameter::create('urn:factur-x.eu:1p0:minimum');

            $echDoc = $doc->exchangedDocument = new ExchangedDocument();
            $echDoc->id = 'F-0000001';// TODO: change me
            // See: https://communaute.chorus-pro.gouv.fr/wp-content/uploads/2017/07/Specifications_Externes_Annexe_EDI_V4.22.pdf
            // See: https://www.billygen.fr/publications/comprendre-factur-x-part2/
            // 380 : Facture commerciale
            // 381 : Avoir (note de crédit)
            // 384 : Facture rectificative
            // 389 : Facture d'autofacturation (créée par l'acheteur pour le compte du fournisseur). Code non accepté pour ChorusPro
            // 261 : Avoir d'autofacturation. Code non accepté pour Chorus Pro
            // 386 : Facture d'acompte
            // 751 : Informations de facture pour comptabilisation : code exigé en Allemagne pour satisfaire ses contraintes réglementaires. Code non accepté pour Chorus Pro.

            $echDoc->typeCode = '380';// TODO: change me
            $echDoc->languageId = ['FR'];// TODO: change me
            $echDoc->issueDateTime = new DateTime('now');// TODO: change me


            $xml = Builder::create()->transform($doc);

            $facturXFile = tempnam(sys_get_temp_dir(), 'factur-x');
            file_put_contents($facturXFile, $xml);

            $canvas->get_cpdf()->addEmbeddedFile(
                filepath: $facturXFile,
                embeddedFilename: 'factur-x.xml',
                description: 'Factur-X XML file'
            );
        }

        $output = $pdf->output();
        unlink($facturXFile);