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Invoicing: Allow to show exchange rates based on sources/rules (#3122)

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This commit is contained in:
Raphael Michel
2023-02-15 13:22:04 +01:00
committed by GitHub
parent e358bacfa3
commit 2ba9514b6f
11 changed files with 339 additions and 65 deletions
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91
src/pretix/base/services/invoices.py
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@@ -33,16 +33,12 @@
# License for the specific language governing permissions and limitations under the License.
import inspect
import json
import logging
import urllib.error
from datetime import date, timedelta
from datetime import timedelta
from decimal import ROUND_HALF_UP, Decimal
import vat_moss.exchange_rates
from django.conf import settings
from django.core.files.base import ContentFile
from django.core.serializers.json import DjangoJSONEncoder
from django.db import connection, transaction
from django.db.models import Count
from django.dispatch import receiver
@@ -56,11 +52,10 @@ from i18nfield.strings import LazyI18nString
from pretix.base.i18n import language
from pretix.base.models import (
Invoice, InvoiceAddress, InvoiceLine, Order, OrderFee,
ExchangeRate, Invoice, InvoiceAddress, InvoiceLine, Order, OrderFee,
)
from pretix.base.models.tax import EU_CURRENCIES
from pretix.base.services.tasks import TransactionAwareTask
from pretix.base.settings import GlobalSettingsObject
from pretix.base.signals import invoice_line_text, periodic_task
from pretix.celery_app import app
from pretix.helpers.database import OF_SELF, rolledback_transaction
@@ -144,27 +139,54 @@ def build_invoice(invoice: Invoice) -> Invoice:
invoice.invoice_to += "\n" + pgettext("invoice", "VAT-ID: %s") % ia.vat_id
invoice.invoice_to_vat_id = ia.vat_id
cc = str(ia.country)
if cc in EU_CURRENCIES and EU_CURRENCIES[cc] != invoice.event.currency and invoice.event.settings.invoice_eu_currencies:
invoice.foreign_currency_display = EU_CURRENCIES[cc]
if invoice.event.settings.invoice_eu_currencies == 'True':
cc = str(ia.country)
if cc in EU_CURRENCIES and EU_CURRENCIES[cc] != invoice.event.currency:
invoice.foreign_currency_display = EU_CURRENCIES[cc]
if settings.FETCH_ECB_RATES:
rate = ExchangeRate.objects.filter(
source='eu:ecb:eurofxref-daily',
source_currency=invoice.event.currency,
other_currency=invoice.foreign_currency_display,
source_date__gt=now().date() - timedelta(days=7)
).first()
if rate:
invoice.foreign_currency_rate = rate.rate.quantize(Decimal('0.0001'), ROUND_HALF_UP)
invoice.foreign_currency_rate_date = rate.source_date
invoice.foreign_currency_source = 'eu:ecb:eurofxref-daily'
else:
rate_eur_to_event = ExchangeRate.objects.filter(
source='eu:ecb:eurofxref-daily',
source_currency='EUR',
other_currency=invoice.event.currency,
source_date__gt=now().date() - timedelta(days=7)
).first()
rate_eur_to_wanted = ExchangeRate.objects.filter(
source='eu:ecb:eurofxref-daily',
source_currency='EUR',
other_currency=invoice.foreign_currency_display,
source_date__gt=now().date() - timedelta(days=7)
).first()
if rate_eur_to_wanted and rate_eur_to_event:
invoice.foreign_currency_rate = (
rate_eur_to_wanted.rate / rate_eur_to_event.rate
).quantize(Decimal('0.0001'), ROUND_HALF_UP)
invoice.foreign_currency_rate_date = min(rate_eur_to_wanted.source_date, rate_eur_to_event.source_date)
invoice.foreign_currency_source = 'eu:ecb:eurofxref-daily'
elif invoice.event.settings.invoice_eu_currencies == 'CZK' and invoice.event.currency != 'CZK':
invoice.foreign_currency_display = 'CZK'
if settings.FETCH_ECB_RATES:
gs = GlobalSettingsObject()
rates_date = gs.settings.get('ecb_rates_date', as_type=date)
rates_dict = gs.settings.get('ecb_rates_dict', as_type=dict)
convert = (
rates_date and rates_dict and
rates_date > (now() - timedelta(days=7)).date() and
invoice.event.currency in rates_dict and
invoice.foreign_currency_display in rates_dict
)
if convert:
invoice.foreign_currency_rate = (
Decimal(rates_dict[invoice.foreign_currency_display])
/ Decimal(rates_dict[invoice.event.currency])
).quantize(Decimal('0.0001'), ROUND_HALF_UP)
invoice.foreign_currency_rate_date = rates_date
rate = ExchangeRate.objects.filter(
source='cz:cnb:rate-fixing-daily',
source_currency=invoice.event.currency,
other_currency=invoice.foreign_currency_display,
source_date__gt=now().date() - timedelta(days=7)
).first()
if rate:
invoice.foreign_currency_rate = rate.rate.quantize(Decimal('0.0001'), ROUND_HALF_UP)
invoice.foreign_currency_rate_date = rate.source_date
invoice.foreign_currency_source = 'cz:cnb:rate-fixing-daily'
except InvoiceAddress.DoesNotExist:
ia = None
@@ -474,23 +496,6 @@ def build_preview_invoice_pdf(event):
return event.invoice_renderer.generate(invoice)
@receiver(signal=periodic_task)
def fetch_ecb_rates(sender, **kwargs):
if not settings.FETCH_ECB_RATES:
return
gs = GlobalSettingsObject()
if gs.settings.ecb_rates_date == now().strftime("%Y-%m-%d"):
return
try:
date, rates = vat_moss.exchange_rates.fetch()
gs.settings.ecb_rates_date = date
gs.settings.ecb_rates_dict = json.dumps(rates, cls=DjangoJSONEncoder)
except urllib.error.URLError:
logger.exception('Could not retrieve rates from ECB')
@receiver(signal=periodic_task)
@scopes_disabled()
def send_invoices_to_organizer(sender, **kwargs):