Initial version of the E-Invoice solution of JR IT Services

jr_einvoice/facturx.py

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+from __future__ import annotations
+from pathlib import Path
+from decimal import Decimal
+from pycheval import EN16931Invoice, Money, generate_xml
+from .models import Invoice
+from .calc import compute_totals
+
+def generate_facturx_xml(inv: Invoice, out_xml: Path, logger) -> Path:
+    out_xml.parent.mkdir(parents=True, exist_ok=True)
+    totals = compute_totals(inv)
+
+    invoice = EN16931Invoice(
+        invoice_number=inv.meta.invoice_number,
+        invoice_date=inv.meta.invoice_date,
+        currency=inv.meta.currency,
+        grand_total=Money(str(Decimal(str(totals.gross_total)).quantize(Decimal("0.01"))), inv.meta.currency),
+    )
+
+    xml_string = generate_xml(invoice)
+    out_xml.write_text(xml_string, encoding="utf-8")
+    logger.info("Wrote Factur-X XML: %s", out_xml)
+    return out_xml