pretix-servicefees/pretix_servicefees/signals.py

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from decimal import Decimal
from django.urls import resolve, reverse
from django.dispatch import receiver
from django.http import HttpRequest
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from django.utils.translation import gettext_lazy as _, gettext, get_language
from pretix.base.decimal import round_decimal
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from pretix.base.models import Event, Order, TaxRule
from pretix.base.models.orders import OrderFee
from pretix.base.settings import settings_hierarkey
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from pretix.base.signals import order_fee_calculation
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from pretix.base.templatetags.money import money_filter
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from pretix.control.signals import nav_event_settings
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from pretix.presale.signals import fee_calculation_for_cart, front_page_top, order_meta_from_request
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from pretix.presale.views import get_cart
from pretix.presale.views.cart import cart_session
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@receiver(nav_event_settings, dispatch_uid='service_fee_nav_settings')
def navbar_settings(sender, request, **kwargs):
url = resolve(request.path_info)
return [{
'label': _('Service Fee'),
'url': reverse('plugins:pretix_servicefees:settings', kwargs={
'event': request.event.slug,
'organizer': request.organizer.slug,
}),
'active': url.namespace == 'plugins:pretix_servicefees' and url.url_name.startswith('settings'),
}]
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def get_fees(event, total, invoice_address, mod='', request=None, positions=[], gift_cards=None):
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if request is not None and not positions:
positions = get_cart(request)
skip_free = event.settings.get('service_fee_skip_free', as_type=bool)
if skip_free:
positions = [pos for pos in positions if pos.price != Decimal('0.00')]
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skip_addons = event.settings.get('service_fee_skip_addons', as_type=bool)
if skip_addons:
positions = [pos for pos in positions if not pos.addon_to_id]
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skip_non_admission = event.settings.get('service_fee_skip_non_admission', as_type=bool)
if skip_non_admission:
positions = [pos for pos in positions if pos.item.admission]
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fee_per_ticket = event.settings.get('service_fee_per_ticket' + mod, as_type=Decimal)
if mod and fee_per_ticket is None:
fee_per_ticket = event.settings.get('service_fee_per_ticket', as_type=Decimal)
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fee_abs = event.settings.get('service_fee_abs' + mod, as_type=Decimal)
if mod and fee_abs is None:
fee_abs = event.settings.get('service_fee_abs', as_type=Decimal)
fee_percent = event.settings.get('service_fee_percent' + mod, as_type=Decimal)
if mod and fee_percent is None:
fee_percent = event.settings.get('service_fee_percent', as_type=Decimal)
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fee_per_ticket = Decimal("0") if fee_per_ticket is None else fee_per_ticket
fee_abs = Decimal("0") if fee_abs is None else fee_abs
fee_percent = Decimal("0") if fee_percent is None else fee_percent
if event.settings.get('service_fee_skip_if_gift_card', as_type=bool):
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gift_cards = gift_cards or []
if request:
cs = cart_session(request)
if cs.get('gift_cards'):
gift_cards = event.organizer.accepted_gift_cards.filter(pk__in=cs.get('gift_cards'), currency=event.currency)
summed = 0
for gc in gift_cards:
fval = Decimal(gc.value) # TODO: don't require an extra query
fval = min(fval, total - summed)
if fval > 0:
total -= fval
summed += fval
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if (fee_per_ticket or fee_abs or fee_percent) and total != Decimal('0.00'):
fee = round_decimal(fee_abs + total * (fee_percent / 100) + len(positions) * fee_per_ticket, event.currency)
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tax_rule = event.settings.tax_rate_default or TaxRule.zero()
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tax = tax_rule.tax(fee, invoice_address=invoice_address, base_price_is='gross')
return [OrderFee(
fee_type=OrderFee.FEE_TYPE_SERVICE,
internal_type='',
value=fee,
tax_rate=tax.rate,
tax_value=tax.tax,
tax_rule=tax_rule
)]
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return []
@receiver(fee_calculation_for_cart, dispatch_uid="service_fee_calc_cart")
def cart_fee(sender: Event, request: HttpRequest, invoice_address, total, **kwargs):
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mod = ''
try:
from pretix_resellers.utils import ResellerException, get_reseller_and_user
except ImportError:
pass
else:
try:
reseller, user = get_reseller_and_user(request)
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config = reseller.configs.get(organizer_id=sender.organizer_id)
if config.skip_default_service_fees:
return []
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except ResellerException:
pass
else:
mod = '_resellers'
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return get_fees(sender, total, invoice_address, mod, request)
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@receiver(order_fee_calculation, dispatch_uid="service_fee_calc_order")
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def order_fee(sender: Event, positions, invoice_address, total, meta_info, gift_cards, **kwargs):
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mod = ''
if meta_info.get('servicefees_reseller_id'):
mod = '_resellers'
try:
from pretix_resellers.models import Reseller
except ImportError:
pass
else:
r = Reseller.objects.get(pk=meta_info.get('servicefees_reseller_id'))
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config = r.configs.get(organizer_id=sender.organizer_id)
if config.skip_default_service_fees:
return []
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return get_fees(sender, total, invoice_address, mod, positions=positions, gift_cards=gift_cards)
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@receiver(front_page_top, dispatch_uid="service_fee_front_page_top")
def front_page_top_recv(sender: Event, **kwargs):
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fees = []
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fee_per_ticket = sender.settings.get('service_fee_per_ticket', as_type=Decimal)
if fee_per_ticket:
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fees = fees + ["{} {}".format(money_filter(fee_per_ticket, sender.currency), gettext('per ticket'))]
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fee_abs = sender.settings.get('service_fee_abs', as_type=Decimal)
if fee_abs:
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fees = fees + ["{} {}".format(money_filter(fee_abs, sender.currency), gettext('per order'))]
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fee_percent = sender.settings.get('service_fee_percent', as_type=Decimal)
if fee_percent:
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fees = fees + ['{} % {}'.format(fee_percent, gettext('per order'))]
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if fee_per_ticket or fee_abs or fee_percent:
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return '<p>%s</p>' % gettext('A service fee of {} will be added on top of each order.').format(
' {} '.format(gettext('plus')).join(fees)
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)
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@receiver(order_meta_from_request, dispatch_uid="servicefees_order_meta")
def order_meta_signal(sender: Event, request: HttpRequest, **kwargs):
meta = {}
try:
from pretix_resellers.utils import ResellerException, get_reseller_and_user
except ImportError:
pass
else:
try:
reseller, user = get_reseller_and_user(request)
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meta['servicefees_reseller_id'] = reseller.pk
except ResellerException:
pass
return meta
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settings_hierarkey.add_default('service_fee_skip_addons', 'True', bool)
settings_hierarkey.add_default('service_fee_skip_free', 'True', bool)