bornhack-website/src/shop/views.py

578 lines
20 KiB
Python

from django.conf import settings
from django.contrib import messages
from django.contrib.auth.mixins import LoginRequiredMixin
from django.urls import reverse, reverse_lazy
from django.db.models import Count, F
from django.http import (
HttpResponse,
HttpResponseRedirect,
HttpResponseBadRequest,
Http404
)
from django.shortcuts import get_object_or_404
from django.views.generic import (
View,
ListView,
DetailView,
FormView,
)
from django.views.generic.base import RedirectView
from django.views.generic.detail import SingleObjectMixin
from django.utils.decorators import method_decorator
from django.views.decorators.csrf import csrf_exempt
from django.utils import timezone
from shop.models import (
Order,
Product,
OrderProductRelation,
ProductCategory,
EpayCallback,
EpayPayment,
CreditNote,
)
from .forms import AddToOrderForm
from .epay import calculate_epay_hash, validate_epay_callback
from collections import OrderedDict
from vendor.coinify.coinify_callback import CoinifyCallback
from .coinify import (
create_coinify_invoice,
save_coinify_callback,
process_coinify_invoice_json
)
import logging
logger = logging.getLogger("bornhack.%s" % __name__)
# Mixins
class EnsureCreditNoteHasPDFMixin(SingleObjectMixin):
model = CreditNote
def dispatch(self, request, *args, **kwargs):
if not self.get_object().pdf:
messages.error(request, "This creditnote has no PDF yet!")
return HttpResponseRedirect(reverse_lazy('shop:creditnote_list'))
return super(EnsureCreditNoteHasPDFMixin, self).dispatch(
request, *args, **kwargs
)
class EnsureUserOwnsCreditNoteMixin(SingleObjectMixin):
model = CreditNote
def dispatch(self, request, *args, **kwargs):
# If the user does not own this creditnote OR is not staff
if not request.user.is_staff:
if self.get_object().user != request.user:
raise Http404("CreditNote not found")
return super(EnsureUserOwnsCreditNoteMixin, self).dispatch(
request, *args, **kwargs
)
class EnsureUserOwnsOrderMixin(SingleObjectMixin):
model = Order
def dispatch(self, request, *args, **kwargs):
# If the user does not own this order OR is not staff
if not request.user.is_staff:
if self.get_object().user != request.user:
raise Http404("Order not found")
return super(EnsureUserOwnsOrderMixin, self).dispatch(
request, *args, **kwargs
)
class EnsureUnpaidOrderMixin(SingleObjectMixin):
model = Order
def dispatch(self, request, *args, **kwargs):
if self.get_object().paid:
messages.error(request, "This order is already paid for!")
return HttpResponseRedirect(
reverse_lazy('shop:order_detail', kwargs={'pk': self.get_object().pk})
)
return super(EnsureUnpaidOrderMixin, self).dispatch(
request, *args, **kwargs
)
class EnsurePaidOrderMixin(SingleObjectMixin):
model = Order
def dispatch(self, request, *args, **kwargs):
if not self.get_object().paid:
messages.error(request, "This order is not paid for!")
return HttpResponseRedirect(
reverse_lazy('shop:order_detail', kwargs={'pk': self.get_object().pk})
)
return super(EnsurePaidOrderMixin, self).dispatch(
request, *args, **kwargs
)
class EnsureClosedOrderMixin(SingleObjectMixin):
model = Order
def dispatch(self, request, *args, **kwargs):
if self.get_object().open is not None:
messages.error(request, 'This order is still open!')
return HttpResponseRedirect(
reverse_lazy('shop:order_detail', kwargs={'pk': self.get_object().pk})
)
return super(EnsureClosedOrderMixin, self).dispatch(
request, *args, **kwargs
)
class EnsureOrderHasProductsMixin(SingleObjectMixin):
model = Order
def dispatch(self, request, *args, **kwargs):
if not self.get_object().products.count() > 0:
messages.error(request, 'This order has no products!')
return HttpResponseRedirect(reverse_lazy('shop:index'))
return super(EnsureOrderHasProductsMixin, self).dispatch(
request, *args, **kwargs
)
class EnsureOrderIsNotCancelledMixin(SingleObjectMixin):
model = Order
def dispatch(self, request, *args, **kwargs):
if self.get_object().cancelled:
messages.error(
request,
'Order #{} is cancelled!'.format(self.get_object().id)
)
return HttpResponseRedirect(reverse_lazy('shop:index'))
return super(EnsureOrderIsNotCancelledMixin, self).dispatch(
request, *args, **kwargs
)
class EnsureOrderHasInvoicePDFMixin(SingleObjectMixin):
model = Order
def dispatch(self, request, *args, **kwargs):
if not self.get_object().invoice.pdf:
messages.error(request, "This order has no invoice yet!")
return HttpResponseRedirect(
reverse_lazy('shop:order_detail', kwargs={'pk': self.get_object().pk})
)
return super(EnsureOrderHasInvoicePDFMixin, self).dispatch(
request, *args, **kwargs
)
# Shop views
class ShopIndexView(ListView):
model = Product
template_name = "shop_index.html"
context_object_name = 'products'
def get_queryset(self):
queryset = super(ShopIndexView, self).get_queryset()
return queryset.available().order_by('category__name', 'price', 'name')
def get_context_data(self, **kwargs):
context = super(ShopIndexView, self).get_context_data(**kwargs)
if 'category' in self.request.GET:
category = self.request.GET.get('category')
# is this a public category
try:
categoryobj = ProductCategory.objects.get(slug=category)
if not categoryobj.public:
raise Http404("Category not found")
except ProductCategory.DoesNotExist:
raise Http404("Category not found")
# filter products by the chosen category
context['products'] = context['products'].filter(
category__slug=category
)
context['current_category'] = categoryobj
context['categories'] = ProductCategory.objects.annotate(
num_products=Count('products')
).filter(
num_products__gt=0,
public=True,
products__available_in__contains=timezone.now()
)
return context
class ProductDetailView(FormView, DetailView):
model = Product
template_name = 'product_detail.html'
form_class = AddToOrderForm
context_object_name = 'product'
def dispatch(self, request, *args, **kwargs):
if not self.get_object().category.public:
# this product is not publicly available
raise Http404("Product not found")
return super(ProductDetailView, self).dispatch(
request, *args, **kwargs
)
def form_valid(self, form):
product = self.get_object()
quantity = form.cleaned_data.get('quantity')
# do we have an open order?
try:
order = Order.objects.get(
user=self.request.user,
open__isnull=False
)
except Order.DoesNotExist:
# no open order - open a new one
order = Order.objects.create(
user=self.request.user,
)
# get product from kwargs
if product in order.products.all():
# this product is already added to this order,
# increase count by quantity
OrderProductRelation.objects.filter(
product=product,
order=order
).update(quantity=F('quantity') + quantity)
else:
order.orderproductrelation_set.create(
product=product,
quantity=quantity,
)
messages.info(
self.request,
'{}x {} has been added to your order.'.format(
quantity,
product.name
)
)
# done
return super(ProductDetailView, self).form_valid(form)
def get_success_url(self):
return Order.objects.get(
user=self.request.user, open__isnull=False
).get_absolute_url()
class OrderListView(LoginRequiredMixin, ListView):
model = Order
template_name = "order_list.html"
context_object_name = 'orders'
def get_queryset(self):
queryset = super(OrderListView, self).get_queryset()
return queryset.filter(user=self.request.user).not_cancelled()
class OrderDetailView(LoginRequiredMixin, EnsureUserOwnsOrderMixin, EnsureOrderHasProductsMixin, EnsureOrderIsNotCancelledMixin, DetailView):
model = Order
template_name = 'order_detail.html'
context_object_name = 'order'
def post(self, request, *args, **kwargs):
order = self.get_object()
payment_method = request.POST.get('payment_method')
if payment_method in order.PAYMENT_METHODS:
if not request.POST.get('accept_terms'):
messages.error(request, "You need to accept the general terms and conditions before you can continue!")
return HttpResponseRedirect(
reverse_lazy('shop:order_detail', kwargs={'pk': order.pk})
)
# Set payment method and mark the order as closed
order.payment_method = payment_method
order.open = None
order.customer_comment = request.POST.get('customer_comment') or ''
order.save()
reverses = {
Order.CREDIT_CARD: reverse_lazy(
'shop:epay_form',
kwargs={'pk': order.id}
),
Order.BLOCKCHAIN: reverse_lazy(
'shop:coinify_pay',
kwargs={'pk': order.id}
),
Order.BANK_TRANSFER: reverse_lazy(
'shop:bank_transfer',
kwargs={'pk': order.id}
),
Order.CASH: reverse_lazy(
'shop:cash',
kwargs={'pk': order.id}
)
}
return HttpResponseRedirect(reverses[payment_method])
if 'update_order' in request.POST:
for order_product in order.orderproductrelation_set.all():
order_product_id = str(order_product.pk)
if order_product_id in request.POST:
new_quantity = int(request.POST.get(order_product_id))
order_product.quantity = new_quantity
order_product.save()
order.customer_comment = request.POST.get('customer_comment') or ''
order.save()
product_remove = request.POST.get('remove_product')
if product_remove:
order.orderproductrelation_set.filter(pk=product_remove).delete()
if not order.products.count() > 0:
order.mark_as_cancelled()
messages.info(request, 'Order cancelled!')
return HttpResponseRedirect(reverse_lazy('shop:index'))
if 'cancel_order' in request.POST:
order.mark_as_cancelled()
messages.info(request, 'Order cancelled!')
return HttpResponseRedirect(reverse_lazy('shop:index'))
return super(OrderDetailView, self).get(request, *args, **kwargs)
class DownloadInvoiceView(LoginRequiredMixin, EnsureUserOwnsOrderMixin, EnsurePaidOrderMixin, EnsureOrderHasInvoicePDFMixin, SingleObjectMixin, View):
model = Order
def get(self, request, *args, **kwargs):
response = HttpResponse(content_type='application/pdf')
response['Content-Disposition'] = 'attachment; filename="%s"' % self.get_object().invoice.filename
response.write(self.get_object().invoice.pdf.read())
return response
class CreditNoteListView(LoginRequiredMixin, ListView):
model = CreditNote
template_name = "creditnote_list.html"
context_object_name = 'creditnotes'
def get_queryset(self):
queryset = super().get_queryset()
return queryset.filter(user=self.request.user)
class DownloadCreditNoteView(LoginRequiredMixin, EnsureUserOwnsCreditNoteMixin, EnsureCreditNoteHasPDFMixin, SingleObjectMixin, View):
model = CreditNote
def get(self, request, *args, **kwargs):
response = HttpResponse(content_type='application/pdf')
response['Content-Disposition'] = 'attachment; filename="%s"' % self.get_object().filename
response.write(self.get_object().pdf.read())
return response
class OrderMarkAsPaidView(LoginRequiredMixin, SingleObjectMixin, View):
model = Order
def get(self, request, *args, **kwargs):
if not request.user.is_staff:
messages.error(request, 'You do not have permissions to do that.')
return HttpResponseRedirect(reverse_lazy('shop:index'))
else:
messages.success(request, 'The order has been marked as paid.')
order = self.get_object()
order.mark_as_paid()
return HttpResponseRedirect(request.META.get('HTTP_REFERER'))
# Epay views
class EpayFormView(LoginRequiredMixin, EnsureUserOwnsOrderMixin, EnsureUnpaidOrderMixin, EnsureClosedOrderMixin, EnsureOrderHasProductsMixin, DetailView):
model = Order
template_name = 'epay_form.html'
def get_context_data(self, **kwargs):
order = self.get_object()
context = super(EpayFormView, self).get_context_data(**kwargs)
context['merchant_number'] = settings.EPAY_MERCHANT_NUMBER
context['description'] = order.description
context['amount'] = order.total * 100
context['order_id'] = order.pk
context['accept_url'] = order.get_epay_accept_url(self.request)
context['cancel_url'] = order.get_cancel_url(self.request)
context['callback_url'] = order.get_epay_callback_url(self.request)
context['epay_hash'] = calculate_epay_hash(order, self.request)
return context
class EpayCallbackView(SingleObjectMixin, View):
model = Order
def get(self, request, *args, **kwargs):
callback = EpayCallback.objects.create(
payload=request.GET
)
if 'orderid' in request.GET:
query = OrderedDict(
[tuple(x.split('=')) for x in request.META['QUERY_STRING'].split('&')]
)
order = get_object_or_404(Order, pk=query.get('orderid'))
if order.pk != self.get_object().pk:
logger.error("bad epay callback, orders do not match!")
return HttpResponse(status=400)
if validate_epay_callback(query):
callback.md5valid=True
callback.save()
else:
logger.error("bad epay callback!")
return HttpResponse(status=400)
if order.paid:
# this order is already paid, perhaps we are seeing a double callback?
return HttpResponse('OK')
# epay callback is valid - has the order been paid in full?
if int(query['amount']) == order.total * 100:
# create an EpayPayment object linking the callback to the order
EpayPayment.objects.create(
order=order,
callback=callback,
txnid=query.get('txnid'),
)
# and mark order as paid (this will create tickets)
order.mark_as_paid(request)
else:
logger.error("valid epay callback with wrong amount detected")
else:
return HttpResponse(status=400)
return HttpResponse('OK')
class EpayThanksView(LoginRequiredMixin, EnsureUserOwnsOrderMixin, EnsureClosedOrderMixin, DetailView):
model = Order
template_name = 'epay_thanks.html'
def dispatch(self, request, *args, **kwargs):
if request.GET:
# epay redirects the user back to our accepturl with a long
# and ugly querystring, redirect user to the clean url
return HttpResponseRedirect(
reverse('shop:epay_thanks', kwargs={'pk': self.get_object().pk})
)
return super(EpayThanksView, self).dispatch(
request, *args, **kwargs
)
# Bank Transfer view
class BankTransferView(LoginRequiredMixin, EnsureUserOwnsOrderMixin, EnsureUnpaidOrderMixin, EnsureOrderHasProductsMixin, DetailView):
model = Order
template_name = 'bank_transfer.html'
def get_context_data(self, **kwargs):
context = super(BankTransferView, self).get_context_data(**kwargs)
context['iban'] = settings.BANKACCOUNT_IBAN
context['swiftbic'] = settings.BANKACCOUNT_SWIFTBIC
context['orderid'] = self.get_object().pk
context['regno'] = settings.BANKACCOUNT_REG
context['accountno'] = settings.BANKACCOUNT_ACCOUNT
context['total'] = self.get_object().total
return context
# Cash payment view
class CashView(LoginRequiredMixin, EnsureUserOwnsOrderMixin, EnsureUnpaidOrderMixin, EnsureOrderHasProductsMixin, DetailView):
model = Order
template_name = 'cash.html'
# Coinify views
class CoinifyRedirectView(LoginRequiredMixin, EnsureUserOwnsOrderMixin, EnsureUnpaidOrderMixin, EnsureClosedOrderMixin, EnsureOrderHasProductsMixin, SingleObjectMixin, RedirectView):
model = Order
def dispatch(self, request, *args, **kwargs):
order = self.get_object()
# create a new coinify invoice if needed
if not order.coinifyapiinvoice:
coinifyinvoice = create_coinify_invoice(order, request)
if not coinifyinvoice:
messages.error(request, "There was a problem with the payment provider. Please try again later")
return HttpResponseRedirect(
reverse_lazy('shop:order_detail', kwargs={'pk': self.get_object().pk})
)
return super(CoinifyRedirectView, self).dispatch(
request, *args, **kwargs
)
def get_redirect_url(self, *args, **kwargs):
return self.get_object().coinifyapiinvoice.invoicejson['payment_url']
class CoinifyCallbackView(SingleObjectMixin, View):
model = Order
@method_decorator(csrf_exempt)
def dispatch(self, *args, **kwargs):
return super(CoinifyCallbackView, self).dispatch(*args, **kwargs)
def post(self, request, *args, **kwargs):
# save callback and parse json payload
callbackobject = save_coinify_callback(request, self.get_object())
# do we have a json body?
if not callbackobject.payload:
# no, return an error
logger.error("unable to parse JSON body in callback for order %s" % callbackobject.order.id)
return HttpResponseBadRequest('unable to parse json')
# initiate SDK
sdk = CoinifyCallback(settings.COINIFY_IPN_SECRET.encode('utf-8'))
# attemt to validate the callbackc
if sdk.validate_callback(request.body, request.META['HTTP_X_COINIFY_CALLBACK_SIGNATURE']):
# mark callback as valid in db
callbackobject.valid = True
callbackobject.save()
else:
logger.error("invalid coinify callback detected")
return HttpResponseBadRequest('something is fucky')
if callbackobject.payload['event'] == 'invoice_state_change' or callbackobject.payload['event'] == 'invoice_manual_resend':
process_coinify_invoice_json(
callbackobject.payload['data'],
self.get_object()
)
return HttpResponse('OK')
else:
logger.error("unsupported callback event %s" % callbackobject.payload['event'])
return HttpResponseBadRequest('unsupported event')
class CoinifyThanksView(LoginRequiredMixin, EnsureUserOwnsOrderMixin, EnsureClosedOrderMixin, DetailView):
model = Order
template_name = 'coinify_thanks.html'