Invoice/InvoiceToZUGFeRD.py (6129514) - invoice.git

InvoiceToZUGFeRD.py

# -*- coding: utf-8 -*-
# (C) 2011 by Bernd Wurst <bernd@schokokeks.org>

# This file is part of Bib2011.
#
# Bib2011 is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Bib2011 is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Bib2011.  If not, see <http://www.gnu.org/licenses/>.

import os.path
import sys
from decimal import Decimal

# Search for included submodule python-drafthorse
atoms = os.path.abspath(os.path.dirname(__file__)).split('/')
dir = ''
while atoms:
    candidate = os.path.join('/'.join(atoms), 'external/python-drafthorse')
    if os.path.exists(candidate):
        dir = candidate
        break
    atoms = atoms[:-1]
sys.path.insert(0, dir)
from drafthorse.models.document import Document
from drafthorse.models.accounting import ApplicableTradeTax
from drafthorse.models.tradelines import LineItem
from .InvoiceObjects import InvoiceTable, InvoiceText, RECHNUNG, GUTSCHRIFT, KORREKTUR, \
    VAT_REGULAR, VAT_KLEINUNTERNEHMER, VAT_INNERGEM, PAYMENT_UEBERWEISUNG, PAYMENT_LASTSCHRIFT
from drafthorse.models.party import TaxRegistration, URIUniversalCommunication
from drafthorse.models.payment import PaymentTerms
from drafthorse.models.note import IncludedNote
from drafthorse.pdf import attach_xml

def InvoiceToXML(invoice):
    doc = Document()
    doc.context.guideline_parameter.id = "urn:cen.eu:en16931:2017"
    doc.header.id = invoice.id
    # Typecodes:
    # 380: Handelsrechnungen
    # 381: Gutschrift
    # 384: Korrekturrechnung
    # 389: Eigenrechnung (vom Käufer im Namen des Lieferanten erstellt).
    # 261: Selbstverfasste Gutschrift.
    # 386: Vorauszahlungsrechnung
    # 326: Teilrechnung
    # 751: Rechnungsinformation - KEINE RECHNUNG
    if invoice.type == RECHNUNG:
        doc.header.type_code = "380"
    elif invoice.type == GUTSCHRIFT:
        doc.header.type_code = "381"
    elif invoice.type == KORREKTUR:
        doc.header.type_code = "384"
    else:
        raise TypeError("Unbekannter Rechnungstyp, kann kein XML erstellen")
    doc.header.issue_date_time = invoice.date

# Seller-Address
    if invoice.seller['trade_name']:
        pass
        # FIXME: specified_legal_organization ist in der Library nicht implementiert, pull request ist vorhanden
        # doc.trade.agreement.seller.specified_legal_organization.trade_name = invoice.seller['trade_name']
    doc.trade.agreement.seller.name = invoice.seller['name']
    doc.trade.agreement.seller.address.country_id = invoice.seller['address']['country_id']
    doc.trade.agreement.seller.address.postcode = invoice.seller['address']['postcode']
    doc.trade.agreement.seller.address.city_name = invoice.seller['address']['city_name']
    doc.trade.agreement.seller.address.line_one = invoice.seller['address']['line1']
    doc.trade.agreement.seller.address.line_two = invoice.seller['address']['line2']
    doc.trade.agreement.seller.address.line_three = invoice.seller['address']['line3']
    if invoice.seller['phone']:
        doc.trade.agreement.seller.contact.telephone.number = invoice.seller['phone']
    if invoice.seller_vat_id:
        tax_reg = TaxRegistration()
        tax_reg.id = ('VA', invoice.seller_vat_id)
        doc.trade.agreement.seller.tax_registrations.add(tax_reg)
    if invoice.seller['email']:
        email = URIUniversalCommunication()
        email.uri_ID = ('EM', invoice.seller['email'])
        # FIXME: Typo in der Library ("adress")?
        doc.trade.agreement.seller.electronic_adress.add(email)

# Buyer-Address
    doc.trade.agreement.buyer.name = invoice.customer['name']
    doc.trade.agreement.buyer.address.country_id = invoice.customer['address']['country_id']
    doc.trade.agreement.buyer.address.postcode = invoice.customer['address']['postcode']
    doc.trade.agreement.buyer.address.city_name = invoice.customer['address']['city_name']
    doc.trade.agreement.buyer.address.line_one = invoice.customer['address']['line1']
    doc.trade.agreement.buyer.address.line_two = invoice.customer['address']['line2']
    doc.trade.agreement.buyer.address.line_three = invoice.customer['address']['line3']

if invoice.buyer_reference:
        # "Leitweg-ID" in XRechnung
        doc.trade.agreement.buyer_reference = invoice.buyer_reference

# Line Items
    summe_netto = 0.0
    summe_brutto = 0.0
    summe_bezahlt = 0.0
    summe_ust = 0.0
    line_id_count = 0
    textparts = []
    for part in invoice.parts:
        if isinstance(part, InvoiceText):
            textparts += part.paragraphs
        if isinstance(part, InvoiceTable):
            for el in part.entries:
                line_id_count += 1
                li = LineItem()
                li.document.line_id = f"{line_id_count}"
                li.product.name = el['subject']
                if 'desc' in el and el['desc'] != '':
                    desc = li.product.description = el['desc']

if 'period_start' in el and el['period_start']:
                    if 'period_end' in el and el['period_end']:
                        li.settlement.period.start = el['period_start']
                        li.settlement.period.end = el['period_end']
                    else:
                        li.delivery.event.occurrence = el['period_start']

# FIXME: Hier sollte der passende Code benutzt werden (z.B. Monat)
                li.delivery.billed_quantity = (Decimal(el['count']), 'C62')
                # C62 = ohne Einheit
                # H87 = Stück
                # MON = Month
                # LTR = Liter (1 dm3)
                # KGM = Kilogram
                # MTR = Meter
                # TNE = Tonne

li.settlement.trade_tax.type_code = "VAT"
                if invoice.vat_type == VAT_REGULAR:
                    li.settlement.trade_tax.category_code = "S"
                elif invoice.vat_type == VAT_KLEINUNTERNEHMER:
                    li.settlement.trade_tax.category_code = "E"
                elif invoice.vat_type == VAT_INNERGEM:
                    li.settlement.trade_tax.category_code = "K"
                # FIXME: Typ bei uns nur global gesetzt, nicht pro Artikel
                # S = Standard VAT rate
                # Z = Zero rated goods
                # E = VAT exempt
                # AE = Reverse charge
                # K = Intra-Community supply (specific reverse charge)
                # G = Exempt VAT for Export outside EU
                # O = Outside VAT scope
                li.settlement.trade_tax.rate_applicable_percent = Decimal(f"{el['vat'] * 100:.1f}")

nettopreis = el['price']
                if part.vatType == 'gross':
                    nettopreis = el['price'] / (1 + el['vat'])
                li.agreement.net.amount = Decimal(f"{nettopreis:.2f}")

nettosumme = el['total']
                if part.vatType == 'gross':
                    nettosumme = el['total'] / (1 + el['vat'])
                li.settlement.monetary_summation.total_amount = Decimal(f"{nettosumme:.2f}")

summe_netto += nettosumme
                summe_brutto += el['total']
                doc.trade.items.add(li)

for pay in part.payments:
                summe_bezahlt += pay['amount']

for vat, vatdata in part.vat.items():
                trade_tax = ApplicableTradeTax()
                # Steuerbetrag dieses Steuersatzes
                trade_tax.calculated_amount = Decimal(f"{(vatdata[0] / (vat + 1)) * vat:.2f}")
                # Nettosumme dieses Steuersatzes
                trade_tax.basis_amount = Decimal(f"{(vatdata[0] / (vat + 1)):.2f}")
                trade_tax.type_code = "VAT"
                if invoice.vat_type == VAT_REGULAR:
                    trade_tax.category_code = "S"
                elif invoice.vat_type == VAT_KLEINUNTERNEHMER:
                    trade_tax.category_code = "E"
                    trade_tax.exemption_reason = 'Als Kleinunternehmer wird gemäß §19 UStG keine USt in Rechnung gestellt.'
                elif invoice.vat_type == VAT_INNERGEM:
                    trade_tax.category_code = "K"
                trade_tax.rate_applicable_percent = Decimal(f"{vat * 100:.1f}")
                summe_ust += (vatdata[0] / (vat + 1)) * vat
                doc.trade.settlement.trade_tax.add(trade_tax)

for paragraph in textparts:
        note = IncludedNote()
        note.content.add(paragraph)
        doc.header.notes.add(note)

rest = summe_brutto - summe_bezahlt

if invoice.creditor_reference_id:
        # Gläubiger-ID für SEPA
        doc.trade.settlement.creditor_reference_id = invoice.creditor_reference_id
    doc.trade.settlement.payment_reference = invoice.id
    doc.trade.settlement.currency_code = 'EUR'
    if invoice.payment_type:
        doc.trade.settlement.payment_means.type_code = invoice.payment_type

if invoice.seller_bank_data['iban'] and invoice.payment_type == PAYMENT_UEBERWEISUNG:
        doc.trade.settlement.payment_means.payee_account.account_name = \
            invoice.seller_bank_data['kontoinhaber'] or invoice.seller['trade_name'] or invoice.seller['name']
        doc.trade.settlement.payment_means.payee_account.iban = invoice.seller_bank_data['iban']
        if invoice.seller_bank_data['bic']:
            doc.trade.settlement.payment_means.payee_institution.bic = invoice.seller_bank_data['bic']
    if invoice.buyer_bank_data['iban'] and invoice.payment_type == PAYMENT_LASTSCHRIFT:
        # Kunden-Bankverbindung bei Lastschrift
        doc.trade.settlement.payment_means.payer_account.iban = invoice.buyer_bank_data['iban']

terms = PaymentTerms()
    if invoice.due_date and invoice.payment_type == PAYMENT_UEBERWEISUNG:
        terms.description = f"Bitte begleichen Sie den Betrag bis zum {invoice.due_date.strftime('%d.%m.%Y')} ohne Abzüge."
        terms.due = invoice.due_date
    if invoice.type in [GUTSCHRIFT, KORREKTUR]:
        terms.description = f"Wir überweisen den Betrag auf Ihr Konto."
    elif invoice.debit:
        if invoice.debit_mandate_id:
            # Mandatsreferenz für Lastschrift
            terms.debit_mandate_id = invoice.debit_mandate_id
        terms.description = 'Wir buchen von Ihrem Konto ab.'
    doc.trade.settlement.terms.add(terms)

doc.trade.settlement.monetary_summation.line_total = Decimal(f"{summe_netto:.2f}")
    doc.trade.settlement.monetary_summation.charge_total = Decimal("0.00")
    doc.trade.settlement.monetary_summation.allowance_total = Decimal("0.00")
    doc.trade.settlement.monetary_summation.tax_basis_total = Decimal(f"{summe_netto:.2f}")
    doc.trade.settlement.monetary_summation.tax_total = (Decimal(f"{summe_ust:.2f}"), "EUR")
    doc.trade.settlement.monetary_summation.prepaid_total = Decimal(f"{summe_bezahlt:.2f}")
    doc.trade.settlement.monetary_summation.grand_total = Decimal(f"{summe_brutto:.2f}")
    doc.trade.settlement.monetary_summation.due_amount = Decimal(f"{rest:.2f}")

# Generate XML file
    xml = doc.serialize(schema="FACTUR-X_EN16931")
    return xml

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