update README

codé avec l'aide de claude IA

README.md

@@ -1,6 +1,6 @@
 # Facturation Association
 
-Application de facturation légale française pour associations (loi 1901),
+Application de facturation légale française pour associations (loi 1901) ou micro-entrepreneur,
 non assujetties à la TVA (art. 293B du CGI).
 
 ## Fonctionnalités
@@ -9,7 +9,7 @@ non assujetties à la TVA (art. 293B du CGI).
 - Devis avec numérotation automatique (DEV-AAAA-XXXX)
 - Factures avec numérotation chronologique (AAAA-XXXX)
 - Conversion devis → facture
-- Génération PDF avec toutes les mentions légales françaises
+- Génération PDF avec toutes les mentions légales françaises et conforme aux normes de facturation electronique Factur-X
 - Suivi des statuts (émise / payée / annulée)
 
 ## Stack

generate_facturx_jinja2.py

@@ -0,0 +1,225 @@
+"""
+Générateur Factur-X BASIC via template Jinja2
+"""
+
+from jinja2 import Environment, FileSystemLoader
+from dataclasses import dataclass, field
+from typing import List, Optional
+from datetime import date
+from collections import defaultdict
+
+from fastapi.templating import Jinja2Templates
+
+templates = Jinja2Templates(directory="templates")
+
+# ─────────────────────────────────────────────
+# Structures de données (identiques au générateur lxml)
+# ─────────────────────────────────────────────
+@dataclass
+class Address:
+    line1: str
+    city: str
+    postcode: str
+    country_code: str
+    line2: Optional[str] = None
+
+
+@dataclass
+class Party:
+    name: str
+    vat_id: Optional[str] = None
+    siret: Optional[str] = None
+    address: Optional[Address] = None
+
+
+@dataclass
+class InvoiceLine:
+    line_id: str
+    description: str
+    quantity: float
+    unit_code: str
+    unit_price: float
+    vat_rate: float
+    vat_category: str = "S"
+
+# Raison d'exonération par catégorie TVA
+EXEMPTION_REASONS = {
+    "E": "TVA non applicable, art. 293 B du CGI",
+    "Z": "Taux zéro",
+    "AE": "Autoliquidation",
+    "K": "Exonération intracommunautaire",
+    "G": "Exportation hors UE",
+}
+
+@dataclass
+class TaxLine:
+    rate: float
+    category: str
+    base_amount: float
+    amount: float
+    exemption_reason: Optional[str] = None
+
+@dataclass
+class Invoice:
+    number: str
+    issue_date: date
+    currency: str
+    seller: Party
+    buyer: Party
+    lines: List[InvoiceLine] = field(default_factory=list)
+    due_date: Optional[date] = None
+    type_code: str = "380"
+    payment_means_code: str = "30"
+    iban: Optional[str] = None
+    payment_reference: Optional[str] = None
+    note: Optional[str] = None
+
+    # Calculés automatiquement (voir compute())
+    tax_lines: List[TaxLine] = field(default_factory=list)
+    total_ht: float = 0.0
+    total_tva: float = 0.0
+    total_ttc: float = 0.0
+
+    def compute(self):
+        """Calcule les totaux et les lignes de TVA depuis les lignes de facture."""
+        tax_groups = defaultdict(float)
+        self.total_ht = 0.0
+
+        for ln in self.lines:
+            net = round(ln.quantity * ln.unit_price, 2)
+            self.total_ht += net
+            tax_groups[(ln.vat_rate, ln.vat_category)] += net
+
+        self.total_ht = round(self.total_ht, 2)
+        self.tax_lines = []
+        self.total_tva = 0.0
+
+        for (rate, category), base in tax_groups.items():
+            base = round(base, 2)
+            amount = round(base * rate / 100, 2)
+            self.total_tva += amount
+            self.tax_lines.append(TaxLine(
+                rate=rate,
+                category=category,
+                base_amount=base,
+                amount=amount,
+                 # Raison d'exonération automatique si catégorie != "S" (standard)
+                exemption_reason=EXEMPTION_REASONS.get(category) if category != "S" else None,
+            ))
+
+        self.total_tva = round(self.total_tva, 2)
+        self.total_ttc = round(self.total_ht + self.total_tva, 2)
+
+
+# ─────────────────────────────────────────────
+# Filtres Jinja2 personnalisés
+# ─────────────────────────────────────────────
+def filter_amount(value: float) -> str:
+    return f"{float(value):.2f}"
+
+
+def filter_datefmt(value: date) -> str:
+    return value.strftime("%Y%m%d")
+
+
+# ─────────────────────────────────────────────
+# Générateur
+# ─────────────────────────────────────────────
+def generate_facturx_xml(invoice: Invoice, template_dir: str = ".", output_file: str = "factur-x.xml") -> str:
+    """
+    Génère le XML Factur-X BASIC depuis le template Jinja2.
+    Retourne le XML sous forme de chaîne et l'écrit dans output_file.
+    """
+    # Calcul des totaux
+    invoice.compute()
+
+    # Environnement Jinja2
+    env = Environment(
+        loader=FileSystemLoader(template_dir),
+        autoescape=False,          # XML géré manuellement
+        trim_blocks=True,          # supprime le \n après les blocs {% %}
+        lstrip_blocks=True,        # supprime les espaces avant {% %}
+    )
+    env.filters["amount"] = filter_amount
+    env.filters["datefmt"] = filter_datefmt
+
+    template = env.get_template("templates/xml/factur-x-basic.xml.j2")
+    xml_str = template.render(
+        invoice=invoice,
+        seller=invoice.seller,
+        buyer=invoice.buyer,
+    )
+
+    with open(output_file, "w", encoding="utf-8") as f:
+        f.write(xml_str)
+
+    return xml_str
+
+
+# ─────────────────────────────────────────────
+# Exemple d'utilisation
+# ─────────────────────────────────────────────
+if __name__ == "__main__":
+
+    invoice = Invoice(
+        number="FA-2024-00123",
+        issue_date=date(2024, 3, 15),
+        due_date=date(2024, 4, 14),
+        currency="EUR",
+        type_code="380",
+        note="Facture relative au contrat n°CTR-2024-01",
+
+        seller=Party(
+            name="Ma Société SAS",
+            # vat_id absent : pas de numéro TVA en franchise (art. 293 B CGI)
+            siret="12345678900012",
+            address=Address(
+                line1="10 rue de la Paix",
+                city="Paris",
+                postcode="75001",
+                country_code="FR",
+            ),
+        ),
+
+        buyer=Party(
+            name="Client SARL",
+            vat_id="FR98765432100",
+            siret="98765432100011",
+            address=Address(
+                line1="5 avenue des Fleurs",
+                city="Lyon",
+                postcode="69001",
+                country_code="FR",
+            ),
+        ),
+
+        payment_means_code="30",
+        iban="FR7612345678901234567890189",
+        payment_reference="CTR-2024-01",
+    )
+
+    # Ajout des lignes — franchise de TVA (art. 293 B du CGI)
+    # Utiliser vat_category="E" et vat_rate=0.0
+    articles = [
+        {"desc": "Développement logiciel - Sprint 1", "qty": 10, "unit": "HUR", "prix": 150.0, "tva": 0.0, "cat": "E"},
+        {"desc": "Licence logicielle annuelle",        "qty":  1, "unit": "C62", "prix": 500.0, "tva": 0.0, "cat": "E"},
+        {"desc": "Formation utilisateurs",             "qty":  2, "unit": "HUR", "prix": 200.0, "tva": 0.0, "cat": "E"},
+    ]
+
+    for i, art in enumerate(articles, start=1):
+        invoice.lines.append(InvoiceLine(
+            line_id=str(i),
+            description=art["desc"],
+            quantity=art["qty"],
+            unit_code=art["unit"],
+            unit_price=art["prix"],
+            vat_rate=art["tva"],
+            vat_category=art["cat"],   # "E" = exonéré (franchise TVA)
+        ))
+
+    xml = generate_facturx_xml(invoice, template_dir=".", output_file="factur-x.xml")
+
+    print(f"✅ Fichier généré : factur-x.xml")
+    print(f"   Total HT  : {invoice.total_ht:.2f} €")
+    print(f"   TVA 20%   : {invoice.total_tva:.2f} €")
+    print(f"   Total TTC : {invoice.total_ttc:.2f} €")

requirements.txt

@@ -8,3 +8,5 @@ pydantic==2.9.2
 pydantic-settings==2.5.2
 bcrypt==4.2.0
 itsdangerous==2.2.0
+factur-x==3.16
+pikepdf==10.5.0

routers/devis.py

@@ -1,7 +1,7 @@
 import json
 from datetime import date, timedelta
 from fastapi import APIRouter, Depends, Request, Form, HTTPException
-from fastapi.responses import HTMLResponse, RedirectResponse
+from fastapi.responses import HTMLResponse, RedirectResponse, Response
 from fastapi.templating import Jinja2Templates
 from sqlalchemy.orm import Session
 
@@ -10,6 +10,7 @@ from models import Devis, LigneDevis, Client, StatutDevis
 from numerotation import generer_numero_devis
 from auth import get_current_user
 from template_helper import render
+from config import settings
 
 router = APIRouter(prefix="/devis", tags=["devis"], dependencies=[Depends(get_current_user)])
 templates = Jinja2Templates(directory="templates")
@@ -150,6 +151,27 @@ def changer_statut_devis(
     db.commit()
     return RedirectResponse(f"/devis/{devis_id}", status_code=303)
 
+@router.get("/{devis_id}/pdf")
+def telecharger_devis__pdf(devis_id: int, db: Session = Depends(get_db)):
+    from weasyprint import HTML
+    devis = db.query(Devis).get(devis_id)
+    if not devis:
+        raise HTTPException(status_code=404)
+
+    html_content = templates.get_template("pdf/devis.html").render({
+        "devis": devis,
+        "settings": settings,
+    })
+
+    pdf_bytes = HTML(string=html_content, base_url=".").write_pdf()
+
+    filename = f"devis-{devis.numero}.pdf"
+    return Response(
+        content=pdf_bytes,
+        media_type="application/pdf",
+        headers={"Content-Disposition": f'attachment; filename="{filename}"'}
+    )
+
 
 @router.post("/{devis_id}/convertir")
 def convertir_en_facture(devis_id: int, db: Session = Depends(get_db)):

routers/factures.py

@@ -11,6 +11,8 @@ from numerotation import generer_numero_facture
 from config import settings
 from auth import get_current_user
 from template_helper import render
+from generate_facturx_jinja2 import Address, Party, Invoice, InvoiceLine, generate_facturx_xml
+from facturx import generate_from_binary
 
 router = APIRouter(prefix="/factures", tags=["factures"], dependencies=[Depends(get_current_user)])
 templates = Jinja2Templates(directory="templates")
@@ -155,20 +157,64 @@ def changer_statut_facture(
     db.commit()
     return RedirectResponse(f"/factures/{facture_id}", status_code=303)
 
+from generate_facturx_jinja2 import  Invoice, Party, Address, InvoiceLine, filter_amount, filter_datefmt
 
 @router.get("/{facture_id}/pdf")
-def telecharger_pdf(facture_id: int, db: Session = Depends(get_db)):
+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"
     return Response(
@@ -187,3 +233,55 @@ def apercu_pdf(request: Request, facture_id: int, db: Session = Depends(get_db))
         "facture": facture,
         "settings": settings,
     })
+
+def get_invoice_data(facture_id: int, db: Session):
+    facture = db.query(Facture).get(facture_id)
+    invoice = Invoice(
+        number=facture.numero,
+        issue_date=facture.date_emission,
+        due_date=facture.date_echeance,
+        currency="EUR",
+        type_code="380",
+        note=("Facture établie suite au devis " + facture.devis_origine.numero),
+
+        seller=Party(
+            name=settings.asso_nom,
+            #vat_id="FR12345678901",
+            siret=settings.asso_siret,
+            address=Address(
+                line1=settings.asso_adresse,
+                city=settings.asso_ville,
+                postcode=settings.asso_code_postal,
+                country_code="FR",
+            ),
+        ),
+
+        buyer=Party(
+            name=facture.client.nom,
+            #vat_id="FR98765432100",
+            siret=facture.client.siret,
+            address=Address(
+                line1=facture.client.adresse,
+                city=facture.client.ville,
+                postcode=facture.client.code_postal,
+                country_code="FR",
+            ),
+        ),
+
+        payment_means_code="30",   # 30 = virement bancaire
+        iban=settings.asso_iban,
+        payment_reference=facture.devis_origine.numero,
+    )
+
+    for l in facture.lignes:
+        invoice.lines.append(InvoiceLine(
+            line_id=l.id,
+            description=l.description,
+            quantity=l.quantite,
+            unit_code="C62",
+            unit_price=l.prix_unitaire_ht,
+            vat_category="E",
+            vat_rate=0.0,
+            ))
+
+    return invoice

template_helper.py

@@ -3,7 +3,7 @@ Helper pour injecter automatiquement current_user dans le contexte Jinja2.
 """
 from fastapi import Request
 from fastapi.templating import Jinja2Templates
-from starlette.responses import HTMLResponse
+from starlette.responses import HTMLResponse, Response
 
 
 def render(templates: Jinja2Templates, template_name: str,

templates/devis/detail.html

@@ -5,6 +5,7 @@
     <h1>Devis {{ devis.numero }}</h1>
     <div class="btn-group">
         <a href="/devis/" class="btn">← Retour</a>
+        <a href="/devis/{{ devis.id }}/pdf" class="btn btn-primary">⬇ Télécharger PDF</a>
         {% if devis.statut.value == 'brouillon' %}
         <a href="/devis/{{ devis.id }}/modifier" class="btn">Modifier</a>
         {% endif %}

templates/devis/liste.html

@@ -28,6 +28,7 @@
             <td><span class="badge badge-{{ d.statut.value }}">{{ d.statut.value }}</span></td>
             <td>
                 <a href="/devis/{{ d.id }}" class="btn btn-sm">Voir</a>
+                <a href="/devis/{{ d.id }}/pdf" class="btn btn-sm btn-primary">PDF</a>
             </td>
         </tr>
         {% endfor %}

templates/pdf/devis.html

@@ -0,0 +1,277 @@
+<!DOCTYPE html>
+<html lang="fr">
+<head>
+    <meta charset="UTF-8">
+    <style>
+        @page {
+            size: A4;
+            margin: 1.5cm 1.8cm;
+        }
+        * { margin: 0; padding: 0; box-sizing: border-box; }
+        body {
+            font-family: 'DejaVu Sans', Arial, sans-serif;
+            font-size: 10pt;
+            color: #1a1a1a;
+        }
+        .header {
+            display: flex;
+            justify-content: space-between;
+            align-items: flex-start;
+            margin-bottom: 2em;
+            padding-bottom: 1.5em;
+            border-bottom: 2px solid #2c3e50;
+        }
+        .emetteur h1 {
+            font-size: 16pt;
+            color: #2c3e50;
+            margin-bottom: 0.3em;
+        }
+        .emetteur p { font-size: 9pt; color: #555; line-height: 1.6; }
+
+        .facture-titre {
+            text-align: right;
+        }
+        .facture-titre h2 {
+            font-size: 22pt;
+            color: #2c3e50;
+            letter-spacing: 1px;
+            text-transform: uppercase;
+        }
+        .facture-titre .numero {
+            font-size: 13pt;
+            font-weight: bold;
+            color: #e74c3c;
+            margin-top: 0.2em;
+        }
+        .facture-titre .dates {
+            font-size: 9pt;
+            color: #555;
+            margin-top: 0.5em;
+            line-height: 1.8;
+        }
+
+        .parties {
+            display: flex;
+            justify-content: space-between;
+            margin-bottom: 2em;
+            gap: 2em;
+        }
+        .partie {
+            flex: 1;
+            padding: 1em;
+            border: 1px solid #ddd;
+            border-radius: 4px;
+        }
+        .partie h3 {
+            font-size: 8pt;
+            text-transform: uppercase;
+            letter-spacing: 1px;
+            color: #888;
+            margin-bottom: 0.7em;
+            border-bottom: 1px solid #eee;
+            padding-bottom: 0.4em;
+        }
+        .partie p { font-size: 9.5pt; line-height: 1.7; }
+        .partie .nom { font-weight: bold; font-size: 11pt; }
+
+        table {
+            width: 100%;
+            border-collapse: collapse;
+            margin-bottom: 1.5em;
+        }
+        thead tr {
+            background-color: #2c3e50;
+            color: white;
+        }
+        thead th {
+            padding: 0.6em 0.8em;
+            text-align: left;
+            font-size: 9pt;
+            font-weight: normal;
+            text-transform: uppercase;
+            letter-spacing: 0.5px;
+        }
+        thead th:last-child { text-align: right; }
+        tbody tr:nth-child(even) { background: #f8f9fa; }
+        tbody td {
+            padding: 0.6em 0.8em;
+            font-size: 9.5pt;
+            border-bottom: 1px solid #eee;
+            vertical-align: top;
+        }
+        tbody td:last-child { text-align: right; font-weight: 500; }
+        td.qte { text-align: center; }
+        td.pu { text-align: right; }
+
+        .totaux {
+            display: flex;
+            justify-content: flex-end;
+            margin-bottom: 2em;
+        }
+        .totaux table {
+            width: auto;
+            min-width: 280px;
+        }
+        .totaux td {
+            padding: 0.4em 0.8em;
+            font-size: 10pt;
+            border: none;
+        }
+        .totaux tr.total-ht td {
+            font-size: 12pt;
+            font-weight: bold;
+            color: #2c3e50;
+            border-top: 2px solid #2c3e50;
+            padding-top: 0.6em;
+        }
+        .totaux td:last-child { text-align: right; }
+
+        .tva-mention {
+            font-size: 8.5pt;
+            color: #666;
+            font-style: italic;
+            text-align: right;
+            margin-bottom: 1.5em;
+        }
+
+        .footer-info {
+            border-top: 1px solid #ddd;
+            padding-top: 1em;
+            font-size: 8.5pt;
+            color: #555;
+            line-height: 1.7;
+        }
+        .footer-info .conditions {
+            margin-bottom: 0.5em;
+        }
+        .footer-info .penalites {
+            font-size: 8pt;
+            color: #888;
+        }
+        .footer-info .iban {
+            margin-top: 0.5em;
+            font-weight: bold;
+        }
+
+        .devis-ref {
+            font-size: 8.5pt;
+            color: #888;
+            margin-bottom: 1.5em;
+        }
+
+        .notes {
+            background: #f8f9fa;
+            border-left: 3px solid #2c3e50;
+            padding: 0.7em 1em;
+            font-size: 9pt;
+            margin-bottom: 1.5em;
+            color: #444;
+        }
+    </style>
+</head>
+<body>
+
+    <!-- EN-TÊTE -->
+    <div class="header">
+        <div class="emetteur">
+            <h1>{{ settings.asso_nom }}</h1>
+            <p>
+                {{ settings.asso_adresse }}<br>
+                {{ settings.asso_code_postal }} {{ settings.asso_ville }}<br>
+                {% if settings.asso_email %}{{ settings.asso_email }}<br>{% endif %}
+                {% if settings.asso_telephone %}{{ settings.asso_telephone }}<br>{% endif %}
+                {% if settings.asso_rna %}RNA : {{ settings.asso_rna }}<br>{% endif %}
+                {% if settings.asso_siret %}SIRET : {{ settings.asso_siret }}{% endif %}
+            </p>
+        </div>
+        <div class="facture-titre">
+            <h2>Devis</h2>
+            <div class="numero">N° {{ devis.numero }}</div>
+            <div class="dates">
+                Date d'émission : {{ devis.date_emission.strftime('%d/%m/%Y') }}<br>
+                Date d'échéance : {{ devis.date_validite.strftime('%d/%m/%Y') }}
+            </div>
+        </div>
+    </div>
+
+    <!-- PARTIES -->
+    <div class="parties">
+        <div class="partie">
+            <h3>Émetteur</h3>
+            <p>
+                <span class="nom">{{ settings.asso_nom }}</span><br>
+                {{ settings.asso_adresse }}<br>
+                {{ settings.asso_code_postal }} {{ settings.asso_ville }}<br>
+                {% if settings.asso_rna %}RNA : {{ settings.asso_rna }}<br>{% endif %}
+                {% if settings.asso_siret %}SIRET : {{ settings.asso_siret }}{% endif %}
+            </p>
+        </div>
+        <div class="partie">
+            <h3>Destinataire</h3>
+            <p>
+                <span class="nom">{{ devis.client.nom }}</span><br>
+                {{ devis.client.adresse }}<br>
+                {{ devis.client.code_postal }} {{ devis.client.ville }}
+                {% if devis.client.siret %}<br>SIRET : {{ devis.client.siret }}{% endif %}
+                {% if devis.client.email %}<br>{{ devis.client.email }}{% endif %}
+            </p>
+        </div>
+    </div>
+
+    <!-- LIGNES -->
+    <table>
+        <thead>
+            <tr>
+                <th style="width:55%">Désignation</th>
+                <th style="width:10%" class="qte">Qté</th>
+                <th style="width:17%">Prix unitaire HT</th>
+                <th style="width:18%">Total HT</th>
+            </tr>
+        </thead>
+        <tbody>
+            {% for l in devis.lignes %}
+            <tr>
+                <td>{{ l.description }}</td>
+                <td class="qte">
+                    {% if l.quantite == l.quantite | int %}{{ l.quantite | int }}{% else %}{{ l.quantite }}{% endif %}
+                </td>
+                <td class="pu">
+                    {{ "%.2f"|format(l.prix_unitaire_ht) | replace('.', ',') }} €
+                </td>
+                <td>{{ "%.2f"|format(l.total_ht) | replace('.', ',') }} €</td>
+            </tr>
+            {% endfor %}
+        </tbody>
+    </table>
+
+    <!-- TOTAUX -->
+    <div class="totaux">
+        <table>
+            <tr>
+                <td>Montant HT</td>
+                <td>{{ "%.2f"|format(devis.total_ht) | replace('.', ',') }} €</td>
+            </tr>
+            <tr>
+                <td>TVA</td>
+                <td>0,00 €</td>
+            </tr>
+            <tr class="total-ht">
+                <td>Total TTC</td>
+                <td>{{ "%.2f"|format(devis.total_ht) | replace('.', ',') }} €</td>
+            </tr>
+        </table>
+    </div>
+    <p class="tva-mention">TVA non applicable — art. 293B du CGI</p>
+
+    <!-- PIED DE PAGE LÉGAL -->
+    <div class="footer-info">
+        {% if settings.asso_iban %}
+        <div class="iban">
+            Coordonnées bancaires — IBAN : {{ settings.asso_iban }}
+            {% if settings.asso_bic %} — BIC : {{ settings.asso_bic }}{% endif %}
+        </div>
+        {% endif %}
+    </div>
+
+</body>
+</html>

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>

templates/xml/factur-x-basic.xml.j2

@@ -0,0 +1,176 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<rsm:CrossIndustryInvoice
+    xmlns:rsm="urn:un:unece:uncefact:data:standard:CrossIndustryInvoice:100"
+    xmlns:ram="urn:un:unece:uncefact:data:standard:ReusableAggregateBusinessInformationEntity:100"
+    xmlns:udt="urn:un:unece:uncefact:data:standard:UnqualifiedDataType:100"
+    xmlns:qdt="urn:un:unece:uncefact:data:standard:QualifiedDataType:100"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+
+  <!-- 1. CONTEXTE -->
+  <rsm:ExchangedDocumentContext>
+    <ram:GuidelineSpecifiedDocumentContextParameter>
+      <ram:ID>urn:cen.eu:en16931:2017#compliant#urn:factur-x.eu:1p0:basic</ram:ID>
+    </ram:GuidelineSpecifiedDocumentContextParameter>
+  </rsm:ExchangedDocumentContext>
+
+  <!-- 2. EN-TÊTE FACTURE -->
+  <rsm:ExchangedDocument>
+    <ram:ID>{{ invoice.number }}</ram:ID>
+    <ram:TypeCode>{{ invoice.type_code }}</ram:TypeCode>
+    <ram:IssueDateTime>
+      <udt:DateTimeString format="102">{{ invoice.issue_date | datefmt }}</udt:DateTimeString>
+    </ram:IssueDateTime>
+    {% if invoice.note %}
+    <ram:IncludedNote>
+      <ram:Content>{{ invoice.note }}</ram:Content>
+    </ram:IncludedNote>
+    {% endif %}
+  </rsm:ExchangedDocument>
+
+  <!-- 3. TRANSACTION COMMERCIALE -->
+  <rsm:SupplyChainTradeTransaction>
+
+    <!-- 3a. Lignes de facture -->
+    {% for line in invoice.lines %}
+    <ram:IncludedSupplyChainTradeLineItem>
+      <ram:AssociatedDocumentLineDocument>
+        <ram:LineID>{{ line.line_id }}</ram:LineID>
+      </ram:AssociatedDocumentLineDocument>
+      <ram:SpecifiedTradeProduct>
+        <ram:Name>{{ line.description }}</ram:Name>
+      </ram:SpecifiedTradeProduct>
+      <ram:SpecifiedLineTradeAgreement>
+        <ram:NetPriceProductTradePrice>
+          <ram:ChargeAmount>{{ line.unit_price | amount }}</ram:ChargeAmount>
+        </ram:NetPriceProductTradePrice>
+      </ram:SpecifiedLineTradeAgreement>
+      <ram:SpecifiedLineTradeDelivery>
+        <ram:BilledQuantity unitCode="{{ line.unit_code }}">{{ line.quantity | amount }}</ram:BilledQuantity>
+      </ram:SpecifiedLineTradeDelivery>
+      <ram:SpecifiedLineTradeSettlement>
+        <ram:ApplicableTradeTax>
+          <ram:TypeCode>VAT</ram:TypeCode>
+          <ram:CategoryCode>{{ line.vat_category }}</ram:CategoryCode>
+          <ram:RateApplicablePercent>{{ line.vat_rate | amount }}</ram:RateApplicablePercent>
+        </ram:ApplicableTradeTax>
+        <ram:SpecifiedTradeSettlementLineMonetarySummation>
+          <ram:LineTotalAmount>{{ (line.quantity * line.unit_price) | amount }}</ram:LineTotalAmount>
+        </ram:SpecifiedTradeSettlementLineMonetarySummation>
+      </ram:SpecifiedLineTradeSettlement>
+    </ram:IncludedSupplyChainTradeLineItem>
+    {% endfor %}
+
+    <!-- 3b. Accord commercial -->
+    <ram:ApplicableHeaderTradeAgreement>
+
+      <ram:SellerTradeParty>
+        <ram:Name>{{ seller.name }}</ram:Name>
+        {% if seller.siret %}
+        <ram:SpecifiedLegalOrganization>
+          <ram:ID schemeID="0002">{{ seller.siret }}</ram:ID>
+        </ram:SpecifiedLegalOrganization>
+        {% endif %}
+        {% if seller.address %}
+        <ram:PostalTradeAddress>
+          <ram:PostcodeCode>{{ seller.address.postcode }}</ram:PostcodeCode>
+          <ram:LineOne>{{ seller.address.line1 }}</ram:LineOne>
+          {% if seller.address.line2 %}
+          <ram:LineTwo>{{ seller.address.line2 }}</ram:LineTwo>
+          {% endif %}
+          <ram:CityName>{{ seller.address.city }}</ram:CityName>
+          <ram:CountryID>{{ seller.address.country_code }}</ram:CountryID>
+        </ram:PostalTradeAddress>
+        {% endif %}
+        {% if seller.vat_id %}
+        <ram:SpecifiedTaxRegistration>
+          <ram:ID schemeID="VA">{{ seller.vat_id }}</ram:ID>
+        </ram:SpecifiedTaxRegistration>
+        {% elif seller.siret %}
+        {# Franchise TVA (art. 293 B CGI) : pas de n° TVA, on utilise le SIRET avec schemeID="FC" #}
+        <ram:SpecifiedTaxRegistration>
+          <ram:ID schemeID="FC">{{ seller.siret }}</ram:ID>
+        </ram:SpecifiedTaxRegistration>
+        {% endif %}
+      </ram:SellerTradeParty>
+
+      <ram:BuyerTradeParty>
+        <ram:Name>{{ buyer.name }}</ram:Name>
+        {% if buyer.siret %}
+        <ram:SpecifiedLegalOrganization>
+          <ram:ID schemeID="0002">{{ buyer.siret }}</ram:ID>
+        </ram:SpecifiedLegalOrganization>
+        {% endif %}
+        {% if buyer.address %}
+        <ram:PostalTradeAddress>
+          <ram:PostcodeCode>{{ buyer.address.postcode }}</ram:PostcodeCode>
+          <ram:LineOne>{{ buyer.address.line1 }}</ram:LineOne>
+          {% if buyer.address.line2 %}
+          <ram:LineTwo>{{ buyer.address.line2 }}</ram:LineTwo>
+          {% endif %}
+          <ram:CityName>{{ buyer.address.city }}</ram:CityName>
+          <ram:CountryID>{{ buyer.address.country_code }}</ram:CountryID>
+        </ram:PostalTradeAddress>
+        {% endif %}
+      </ram:BuyerTradeParty>
+
+      {% if invoice.payment_reference %}
+      <ram:BuyerOrderReferencedDocument>
+        <ram:IssuerAssignedID>{{ invoice.payment_reference }}</ram:IssuerAssignedID>
+      </ram:BuyerOrderReferencedDocument>
+      {% endif %}
+
+    </ram:ApplicableHeaderTradeAgreement>
+
+    <!-- 3c. Livraison -->
+    <ram:ApplicableHeaderTradeDelivery>
+      <ram:ShipToTradeParty>
+        <ram:Name>{{ buyer.name }}</ram:Name>
+      </ram:ShipToTradeParty>
+    </ram:ApplicableHeaderTradeDelivery>
+
+    <!-- 3d. Règlement -->
+    <ram:ApplicableHeaderTradeSettlement>
+      <ram:InvoiceCurrencyCode>{{ invoice.currency }}</ram:InvoiceCurrencyCode>
+
+      <ram:SpecifiedTradeSettlementPaymentMeans>
+        <ram:TypeCode>{{ invoice.payment_means_code }}</ram:TypeCode>
+        {% if invoice.iban %}
+        <ram:PayeePartyCreditorFinancialAccount>
+          <ram:IBANID>{{ invoice.iban }}</ram:IBANID>
+        </ram:PayeePartyCreditorFinancialAccount>
+        {% endif %}
+      </ram:SpecifiedTradeSettlementPaymentMeans>
+
+      {% for tax in invoice.tax_lines %}
+      <ram:ApplicableTradeTax>
+        <ram:CalculatedAmount>{{ tax.amount | amount }}</ram:CalculatedAmount>
+        <ram:TypeCode>VAT</ram:TypeCode>
+        {% if tax.exemption_reason %}
+        <ram:ExemptionReason>{{ tax.exemption_reason }}</ram:ExemptionReason>
+        {% endif %}
+        <ram:BasisAmount>{{ tax.base_amount | amount }}</ram:BasisAmount>
+        <ram:CategoryCode>{{ tax.category }}</ram:CategoryCode>
+        <ram:RateApplicablePercent>{{ tax.rate | amount }}</ram:RateApplicablePercent>
+      </ram:ApplicableTradeTax>
+      {% endfor %}
+
+      {% if invoice.due_date %}
+      <ram:SpecifiedTradePaymentTerms>
+        <ram:DueDateDateTime>
+          <udt:DateTimeString format="102">{{ invoice.due_date | datefmt }}</udt:DateTimeString>
+        </ram:DueDateDateTime>
+      </ram:SpecifiedTradePaymentTerms>
+      {% endif %}
+
+      <ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+        <ram:LineTotalAmount>{{ invoice.total_ht | amount }}</ram:LineTotalAmount>
+        <ram:TaxBasisTotalAmount>{{ invoice.total_ht | amount }}</ram:TaxBasisTotalAmount>
+        <ram:TaxTotalAmount currencyID="{{ invoice.currency }}">{{ invoice.total_tva | amount }}</ram:TaxTotalAmount>
+        <ram:GrandTotalAmount>{{ invoice.total_ttc | amount }}</ram:GrandTotalAmount>
+        <ram:DuePayableAmount>{{ invoice.total_ttc | amount }}</ram:DuePayableAmount>
+      </ram:SpecifiedTradeSettlementHeaderMonetarySummation>
+
+    </ram:ApplicableHeaderTradeSettlement>
+
+  </rsm:SupplyChainTradeTransaction>
+</rsm:CrossIndustryInvoice>