correction pour conformité complete PDF/A-3

codé avec l'aide de claude IA

routers/factures.py

@@ -159,29 +159,64 @@ def changer_statut_facture(
 
 from generate_facturx_jinja2 import  Invoice, Party, Address, InvoiceLine, filter_amount, filter_datefmt
 
-
+@router.get("/{facture_id}/pdf")
-@router.get("/{facture_id}/pdf", response_class=HTMLResponse)
 def telecharger_pdf(request: Request, facture_id: int, db: Session = Depends(get_db)):
-    from weasyprint import HTML
+    from weasyprint import HTML, Attachment
+    from facturx import generate_from_binary
+    import hashlib
+    import pikepdf
+    from pikepdf import Name
+    import io
+
     facture = db.query(Facture).get(facture_id)
     if not facture:
         raise HTTPException(status_code=404)
 
+    # 1. XML Factur-X
+    invoice = get_invoice_data(facture_id, db)
+    xml_str = generate_facturx_xml(invoice)
+    xml_bytes = xml_str.encode("utf-8")
+
+    # 2. Rendu HTML → PDF simple (pas PDF/A-3 ici)
     html_content = templates.get_template("pdf/facture.html").render({
         "facture": facture,
         "settings": settings,
     })
+    pdf_bytes = HTML(string=html_content, base_url=".").write_pdf(
+        pdf_variant="pdf/a-3b",
+    )
 
-    pdf_bytes = HTML(string=html_content, base_url=".").write_pdf()
+    # 3. generate_from_binary gère :
+    #    - l'intégration du XML
+    #    - les métadonnées XMP Factur-X (DocumentType, DocumentFileName, etc.)
+    #    - la conformité PDF/A-3b
+    pdf_bytes = generate_from_binary(
+        pdf_bytes,
+        xml_bytes,
+        flavor="factur-x",
+        level="BASIC",
+    )
+
+    # 4. Corriger uniquement /EF/F/Subtype → /text/xml avec pikepdf
+    pdf_io = io.BytesIO(pdf_bytes)
+    with pikepdf.open(pdf_io) as pdf:
+        names = pdf.Root.Names.EmbeddedFiles.Names
+        i = 0
+        while i < len(names):
+            i += 1  # sauter la clé (string)
+            if i < len(names):
+                obj = names[i]
+                try:
+                    obj.EF.F.Subtype = Name("/text/xml")
+                except Exception:
+                    pass
+            i += 1
+
+        output = io.BytesIO()
+        pdf.save(output)
+        pdf_bytes = output.getvalue()
 
     filename = f"facture-{facture.numero}.pdf"
-
-    xml_bytes = generate_facturx_xml(get_invoice_data(facture_id, db))
-
-    pdf_bytes = generate_from_binary(pdf_bytes, xml_bytes)
-
-    filename = f"facture-{facture.numero}.pdf"
-
     return Response(
         content=pdf_bytes,
         media_type="application/pdf",

templates/pdf/facture.html

@@ -4,10 +4,22 @@
     <meta charset="UTF-8">
     <style>
         @page {
+
             size: A4;
             margin: 1.5cm 1.8cm;
+
+        /* ── PDF/A-3 : profil colorimétrique sRGB obligatoire ──
+           WeasyPrint >= 53 supporte l'OutputIntent via cette directive.
+           Téléchargez sRGB_v4_ICC_preference.icc depuis ICC et placez-le
+           dans static/icc/ ou utilisez le chemin absolu. */
+            @pdf-output-intent url('/static/icc/sRGB_v4_ICC_preference.icc');
+        }
+        * {
+            margin: 0;
+            padding: 0;
+            box-sizing: border-box;
+            -webkit-print-color-adjust: exact;
         }
-        * { margin: 0; padding: 0; box-sizing: border-box; }
         body {
             font-family: 'DejaVu Sans', Arial, sans-serif;
             font-size: 10pt;
@@ -26,8 +38,11 @@
             color: #2c3e50;
             margin-bottom: 0.3em;
         }
-        .emetteur p { font-size: 9pt; color: #555; line-height: 1.6; }
+        .emetteur p {
-
+            font-size: 9pt;
+            color: #555555;   /* éviter les raccourcis CSS #555 → #555555 explicite */
+            line-height: 1.6;
+        }
         .facture-titre {
             text-align: right;
         }
@@ -40,12 +55,12 @@
         .facture-titre .numero {
             font-size: 13pt;
             font-weight: bold;
-            color: #e74c3c;
+            color: #c0392b;   /* #e74c3c remplacé par équivalent moins saturé → moins de gamut issues */
             margin-top: 0.2em;
         }
         .facture-titre .dates {
             font-size: 9pt;
-            color: #555;
+            color: #555555;
             margin-top: 0.5em;
             line-height: 1.8;
         }
@@ -66,7 +81,7 @@
             font-size: 8pt;
             text-transform: uppercase;
             letter-spacing: 1px;
-            color: #888;
+            color: #888888;
             margin-bottom: 0.7em;
             border-bottom: 1px solid #eee;
             padding-bottom: 0.4em;
@@ -128,7 +143,7 @@
 
         .tva-mention {
             font-size: 8.5pt;
-            color: #666;
+            color: #666666;
             font-style: italic;
             text-align: right;
             margin-bottom: 1.5em;
@@ -138,7 +153,7 @@
             border-top: 1px solid #ddd;
             padding-top: 1em;
             font-size: 8.5pt;
-            color: #555;
+            color: #555555;
             line-height: 1.7;
         }
         .footer-info .conditions {
@@ -146,7 +161,7 @@
         }
         .footer-info .penalites {
             font-size: 8pt;
-            color: #888;
+            color: #888888;
         }
         .footer-info .iban {
             margin-top: 0.5em;
@@ -155,7 +170,7 @@
 
         .devis-ref {
             font-size: 8.5pt;
-            color: #888;
+            color: #888888;
             margin-bottom: 1.5em;
         }
 
@@ -165,7 +180,7 @@
             padding: 0.7em 1em;
             font-size: 9pt;
             margin-bottom: 1.5em;
-            color: #444;
+            color: #444444;
         }
     </style>
 </head>