Payment flow

auction/forms.py

@@ -16,4 +16,4 @@ class InquiryProcessForm(forms.ModelForm):
 
     class Meta:
         model = Inquiry
-        fields = ["destination_radius", "arrival", "min_nights", "budget", "adults", "children", "comment"]
+        fields = ["gateway"]

auction/views.py

@@ -4,12 +4,14 @@ from django.contrib import messages
 from django.urls import reverse
 from django.contrib.gis.geos import Point
 from django.contrib.gis.db.models.functions import Distance
+from django.conf import settings
 
 from public.mixins import InConstructionMixin
 from partners.mixins import PartnerProfileRequiredMixin
 from localauth.helpers import name_to_coords
 from partners.models import Establishment
 from payment.models import BillingAddress, Invoice, InvoiceItem, InvoicePayment
+from clients.models import ClientProfile
 
 from .models import Inquiry, Offer
 from .forms import InquiryProcessForm
@@ -59,7 +61,7 @@ class InquiryProcessView(InConstructionMixin, UpdateView):
         return initial
 
     def form_valid(self, form):
-        profile = self.request.user.clientprofile
+        profile, _ = ClientProfile.objects.get_or_create(user=self.request.user)
         profile.first_name = form.cleaned_data["first_name"]
         profile.last_name = form.cleaned_data["last_name"]
         profile.street = form.cleaned_data["street"]
@@ -69,12 +71,30 @@ class InquiryProcessView(InConstructionMixin, UpdateView):
         profile.country = form.cleaned_data["country"]
         profile.save()
 
+        form.instance.client = profile
+
+        return super().form_valid(form)
+
+    def form_invalid(self, form, *args, **kwargs):
+        for field in form:
+            for error in field.errors:
+                messages.error(self.request, f"{field.name}: {error}")
+
+        return redirect("/")
+
     def get_success_url(self):
         return reverse("auction:inquiry_payment", args=(self.object.uuid,))
 
 class InquiryPaymentView(InConstructionMixin, View):
     def get(self, request, *args, **kwargs):
         inquiry = Inquiry.objects.get(uuid=kwargs["uuid"])
+        try:
+            invoice = inquiry.invoice
+        except Invoice.DoesNotExist:
+            invoice = Invoice.from_inquiry(inquiry)
+        payment_url = InvoicePayment.from_invoice(invoice, inquiry.gateway)
+
+        return redirect(payment_url)
 
 class OfferSelectionView(InConstructionMixin, DetailView):
     model = Inquiry

localauth/models.py

@@ -100,12 +100,17 @@ class PhoneMixin(models.Model):
     class Meta:
         abstract = True
 
-class Profile(AddressMixin, PhoneMixin):
-    user = models.OneToOneField(User, models.CASCADE)
+class PersonMixin(models.Model):
     company = models.CharField("Firma", max_length=64, null=True, blank=True)
     vat_id = models.CharField("UID-Nummer", max_length=32, null=True, blank=True)
     first_name = models.CharField("Vorname", max_length=64)
     last_name = models.CharField("Nachname", max_length=64)
+
+    class Meta:
+        abstract = True
+
+class Profile(PersonMixin, AddressMixin, PhoneMixin):
+    user = models.OneToOneField(User, models.CASCADE)
     verified = models.BooleanField(default=False)
     enabled = models.BooleanField(default=True)
 

localsettings.dist.py

@@ -29,3 +29,9 @@ AWS_STORAGE_BUCKET_NAME = "AWS Bucket"
 # Countries the app can be used in (currently no more than 5 due to Google Maps restrictions)
 
 JOKER_COUNTRIES = ["AT"]
+
+# Currency to use
+
+CURRENCY_SYMBOL = "€"
+CURRENCY_CODE = "EUR"
+CURRENCY_NAME = "Euro"

payment/demo/models.py

@@ -1,15 +1,30 @@
 from payment.models import InvoicePayment, Invoice
+from payment.signals import initiate_payment
 
 from django.db import models
 from django.urls import reverse_lazy
+from django.dispatch import receiver
 
 import uuid
 
 class DemoInvoicePayment(InvoicePayment):
     @property
     def gateway(self):
-        return "Paypal"
+        return "Demo"
 
-    @staticmethod
-    def initiate(invoice):
-        self.objects.create(invoice=invoice, amount=invoice.amount, gateway_id=uuid.uuid4())
+    @classmethod
+    def initiate(cls, invoice):
+        payment = cls.objects.create(invoice=invoice, amount=invoice.balance * -1, gateway_id=uuid.uuid4())
+        invoice.generate_invoice()
+        return reverse_lazy("payment:status", args=[payment.uuid])
+
+    @property
+    def status(self):
+        return 0
+
+@receiver(initiate_payment)
+def from_signal(sender, **kwargs):
+    if kwargs["gateway"] == "demo":
+        return {"redirect": DemoInvoicePayment.initiate(kwargs["invoice"])}
+    else:
+        return {}

payment/models.py

@@ -2,6 +2,7 @@ from django.db import models
 from django.contrib.auth import get_user_model
 from django.core.files.base import ContentFile
 from django.utils import timezone
+from django.conf import settings
 
 from dateutil.relativedelta import relativedelta
 
@@ -13,27 +14,38 @@ from django_countries.fields import CountryField
 
 from io import BytesIO
 
+import uuid
+
 import urllib.request
 
 from dbsettings.functions import getValue
 
 from .functions import invoice_upload_path
+from .signals import initiate_payment
 
 from auction.models import Inquiry
+from localauth.models import PersonMixin, AddressMixin
 
-class BillingAddress(models.Model):
+class BillingAddress(PersonMixin, AddressMixin):
     user = models.ForeignKey(get_user_model(), models.CASCADE)
-    company = models.CharField(max_length=64, null=True, blank=True)
-    vat_id = models.CharField(max_length=32, null=True, blank=True)
-    first_name = models.CharField(max_length=64)
-    last_name = models.CharField(max_length=64)
-    street = models.CharField(max_length=128)
-    city = models.CharField(max_length=64)
-    zip = models.CharField(max_length=16)
-    state = models.CharField(max_length=32, null=True, blank=True)
-    country = CountryField()
+
+    @classmethod
+    def from_profile(cls, profile):
+        return cls.objects.create(
+            company = profile.company,
+            vat_id = profile.vat_id,
+            first_name = profile.first_name,
+            last_name = profile.last_name,
+            street = profile.street,
+            city = profile.city,
+            zip = profile.zip,
+            state = profile.state,
+            country = profile.country,
+            user = profile.user
+        )
 
 class Invoice(models.Model):
+    uuid = models.UUIDField(default=uuid.uuid4)
     user = models.ForeignKey(get_user_model(), models.PROTECT)
     billing_address = models.ForeignKey(BillingAddress, models.PROTECT)
     currency = models.CharField(max_length=3)
@@ -45,7 +57,7 @@ class Invoice(models.Model):
     def price_net(self):
         price = 0
 
-        for item in self.invoiceitem_set().all():
+        for item in self.invoiceitem_set.all():
             price += item.net_total
 
         return price
@@ -67,15 +79,17 @@ class Invoice(models.Model):
         return False
 
     @property
-    def is_paid(self):
+    def balance(self):
         paid_amount = 0
 
-        for payment in self.invoicepayment_set().all():
+        for payment in self.invoicepayment_set.all():
             paid_amount += payment.amount
 
-        if paid_amount >= price_gross:
-            return True
-        return False
+        return paid_amount - self.price_gross
+    
+    @property
+    def is_paid(self):
+        return self.balance >= 0
 
     def generate_invoice(self):
         output = BytesIO()
@@ -116,21 +130,21 @@ class Invoice(models.Model):
             "state": profile.state,
             "country": profile.country,
             "post_code": profile.zip,
-            "vat_tax_number": profile.vat_id,
             "email": self.user.email,
         }.items() if value}
 
         doc.client_info = ClientInfo(**client_data)
 
-        for item in self.invoiceitem_set().all():
+        for item in self.invoiceitem_set.all():
             doc.add_item(Item(item.name, item.description, item.count, item.net_each))
 
         doc.set_item_tax_rate(self.tax_rate)
 
-        for payment in self.invoicepayment_set().all():
+        for payment in self.invoicepayment_set.all():
             doc.add_transaction(Transaction(payment.gateway, payment.gateway_id, payment.timestamp, payment.amount))
 
-        bottom_tip = (f"{ self.payment_instructions }<br /><br />" if self.payment_instructions else "") + getValue("billing.bottom_tip", "")
+        bottom_tip = ("Kunden-UID: %s<br /><br />" % profile.vat_id) if profile.vat_id else ""        
+        bottom_tip += (f"{ self.payment_instructions }<br /><br />" if self.payment_instructions else "") + getValue("billing.bottom_tip", "")
         bottom_tip += "<br /><br />" if bottom_tip else ""
         bottom_tip +=  "Rechnung erstellt: %s" % str(timezone.now())
 
@@ -141,6 +155,26 @@ class Invoice(models.Model):
         self.invoice = ContentFile(output.getvalue(), "invoice.pdf")
         self.save()
 
+    @classmethod
+    def from_inquiry(cls, inquiry):
+        invoice = cls.objects.create(
+            user = inquiry.client.user,
+            billing_address = BillingAddress.from_profile(inquiry.client),
+            currency = settings.CURRENCY_CODE,
+            tax_rate = 0,
+            inquiry = inquiry
+        )
+
+        InvoiceItem.objects.create(
+            invoice = invoice,
+            name = "Sicherheitsleistung",
+            description = "Rückzahlbare Sicherheitsleistung zu JourneyJoker-Anfrage #%i" % inquiry.id,
+            count = 1,
+            net_each = inquiry.budget
+        )
+
+        return invoice
+
 class InvoiceItem(models.Model):
     invoice = models.ForeignKey(Invoice, models.CASCADE)
     name = models.CharField(max_length=64)
@@ -148,7 +182,12 @@ class InvoiceItem(models.Model):
     count = models.IntegerField()
     net_each = models.DecimalField(max_digits=11, decimal_places=2)
 
+    @property
+    def net_total(self):
+        return self.net_each * self.count
+
 class InvoicePayment(PolymorphicModel):
+    uuid = models.UUIDField(default=uuid.uuid4)
     invoice = models.ForeignKey(Invoice, models.PROTECT)
     amount = models.DecimalField(max_digits=9, decimal_places=2)
     gateway_id = models.CharField(max_length=256)
@@ -158,6 +197,23 @@ class InvoicePayment(PolymorphicModel):
     def gateway(self):
         raise NotImplementedError("%s does not implement gateway" % type(self))
 
+    @property
+    def status(self):
+        raise NotImplementedError("%s does not implement status" % type(self))
+
     @classmethod
     def initiate(cls, invoice):
         raise NotImplementedError("%s does not implement initiate()" % cls.__name__)
+
+    @classmethod
+    def from_invoice(cls, invoice, gateway):
+        if invoice.balance < 0:
+            responses = initiate_payment.send_robust(sender=cls, invoice=invoice, gateway=gateway)
+            
+            for handler, response in responses:
+                try:
+                    return response["redirect"]
+                except:
+                    continue
+
+        return False

payment/signals.py

@@ -0,0 +1,3 @@
+import django.dispatch
+
+initiate_payment = django.dispatch.Signal()

payment/urls.py

@@ -1,8 +1,11 @@
 from django.urls import path, include
 
+from .views import PaymentStatusView
+
 app_name = "payment"
 
 urlpatterns = [
     path('gateways/paypal/', include("payment.paypal.urls"), name="paypal"),
     path('gateways/sepa/', include("payment.sepa.urls"), name="sepa"),
+    path('status/<slug:uuid>/', PaymentStatusView.as_view(), name="status"),
 ]

payment/views.py

@@ -0,0 +1,11 @@
+from django.views.generic import DetailView
+from django.shortcuts import get_object_or_404
+
+from .models import InvoicePayment
+
+class PaymentStatusView(DetailView):
+    model = InvoicePayment
+    template_name = "payment/status.html"
+
+    def get_object(self):
+        return get_object_or_404(InvoicePayment, uuid=self.kwargs["uuid"])

static/auction/js/custom-paymentmethod.js

@@ -1,3 +1,3 @@
 function setPaymentMethod() {
-    $('#id_payment').val($(".nav-link.active")[0].href.split("#tab-")[1])
+    $('#id_gateway').val($(".nav-link.active")[0].href.split("#tab-")[1])
 }

static/frontend/js/language.js

@@ -0,0 +1 @@
+var language="DE";

templates/auction/process.html

@@ -90,7 +90,7 @@
                         
                         
                         <div class="col-12 col-md-12 col-lg-7 col-xl-8 content-side">
-                            <form class="lg-booking-form" id="frm_booking" name="frm_booking" method="post" action="{% url "auction:inquiry_payment" object.uuid %}">
+                            <form class="lg-booking-form" id="frm_booking" name="frm_booking" method="post" %}">
                                 {% csrf_token %}
                                 {% if not request.user.is_authenticated %}
                                 <div class="lg-booking-form-heading">
@@ -295,7 +295,7 @@
                                     <label><input type="checkbox" {% if request.user.is_authenticated %}required{% else %}disabled{% endif %} id="id_terms" name="terms"> {% trans "Ich erkläre mich einverstanden mit den" %} <a href="#">{% trans "Allgemeinen Geschäftsbedingungen" %}</a> {% trans "und der" %} <a href="#">{% trans "Datenschutzerklärung" %}</a>.</label>
                                 </div><!-- end checkbox -->
                                  <div class="col-md-12 text-center" id="result_msg"></div> 
-                                 <input type="hidden" id="id_payment" name="payment">
+                                 <input type="hidden" id="id_gateway" name="gateway">
                                 <button type="submit" onclick="setPaymentMethod(); return true;" class="btn btn-orange" name="submit" id="submit">{% trans "Zahlung durchführen" %}</button>
                             </form>
                             

templates/frontend/base.html

@@ -340,7 +340,7 @@
     </div>                
                         
     <!-- Page Scripts Starts -->
-    <script>var language="{{ request.LANGUAGE_CODE }}";</script>
+    <script src="{% static "frontend/js/language.js" %}"></script>
     <script src="{% static "vendor/js/jquery-3.3.1.min.js" %}"></script>
     <script src="{% static "vendor/js/jquery.magnific-popup.min.js" %}"></script>
     <script src="{% static "vendor/js/jquery.mCustomScrollbar.concat.min.js" %}"></script>

templates/payment/status.html

@@ -9,7 +9,7 @@
                 <div class="col-md-12 col-lg-8 col-lg-offset-2">
                     <div class="payment-success-text">
                         <h2>{% trans "Zahlung" %} {% if object.status == 0 %}{% trans "erfolgreich" %}{% elif object.status == -1 %}{% trans "autorisiert" %}{% endif %}</h2>
-                        <p>{% blocktrans with currency=object.invoice.currency|upper amount=object.invoice.amount %}Die Zahlung über {{ currency }} {{ amount }} wurde{% endblocktrans %} {% if object.status == 0 %}{% trans "erfolgreich durchgeführt" %}{% elif object.status == -1 %}{% trans "autorisiert" %}{% endif %}</p>
+                        <p>{% blocktrans with currency=object.invoice.currency|upper amount=object.amount %}Die Zahlung über {{ currency }} {{ amount }} wurde{% endblocktrans %} {% if object.status == 0 %}{% trans "erfolgreich durchgeführt" %}{% elif object.status == -1 %}{% trans "autorisiert" %}{% endif %}</p>
                         
                         <span><i class="fa fa-check-circle"></i></span>
                         <div class="table-responsive">
@@ -22,16 +22,20 @@
                                     </tr>
                                 </thead>
                                 <tbody>
+                                    {% for line in object.invoice.invoiceitem_set.all %}
                                     <tr>
-                                        <td><span><i class="fa fa-building"></i></span>{% trans "Gebot" %}</td>
-                                        <td>{{ object.invoice.destination_name }}<span class="t-date">{{ object.first_date|date:"SHORT_DATE_FORMAT" }} – {{ object.last_date|date:"SHORT_DATE_FORMAT" }}</span></td>
-                                        <td>{{ object.invoice.currency|upper }} {{ object.invoice.amount }}</td>
+                                        <td><span><i class="fa fa-building"></i></span>{% if object.invoice.inquiry %}{% trans "Gebot" %}{% else %}{% trans "Gebühren" %}{% endif %}</td>
+                                        <td>{{ line.description }}</td>
+                                        <td>{{ object.invoice.currency|upper }} {{ line.net_total }}</td>
                                     </tr>
+                                    {% endfor %}
                                 </tbody>
                             </table>
                         </div>
+                        <a href="{% url "auction:offer_selection" object.invoice.inquiry.uuid %}" class="btn btn-orange">Angebote erhalten!</a><br /><br />
+                        <a href="{{ object.invoice.invoice.url }}" class="btn">PDF-Beleg herunterladen</a>
                         {% if object.status == -1 %}
-                        <p>{% trans "Die Zahlung wurde autorisiert." %} <a href="/">{% trans "Was bedeutet das?" %}</a></p>
+                        <p>{% trans "Die Zahlung wurde autorisiert." %} <a href="#">{% trans "Was bedeutet das?" %}</a></p>
                         {% endif %}
                         <p>{% trans "Die Zahlungsdaten wurden auch per E-Mail versendet." %}</p>
                     </div>