Refactor commerce models and add configuration app

Major refactor of commerce models: restructured Carrier, Payment, and DiscountCode models, improved order total calculation, and integrated Zasilkovna and Stripe logic. Added new configuration Django app for shop settings, updated Zasilkovna and Stripe models, and fixed Zasilkovna client WSDL URL. Removed unused serializers and views in commerce, and registered new apps in settings.

backend/thirdparty/zasilkovna/models.py

@@ -23,6 +23,8 @@ from django.core.validators import RegexValidator
 from django.core.files.base import ContentFile
 
 from .client import PacketaAPI
+from commerce.models import Order, Carrier
+from configuration.models import Configuration
 
 packeta_client = PacketaAPI()  # single reusable instance
 
@@ -71,8 +73,27 @@ class ZasilkovnaPacket(models.Model):
 
     def save(self, *args, **kwargs):
         # On first save, create the packet remotely if packet_id is not set
+        carrier = Carrier.objects.get(zasilkovna=self)
+        order = Order.objects.get(carrier=carrier)
+
         if not self.packet_id:
-            response = packeta_client.create_packet(**kwargs)
+            response = packeta_client.create_packet(
+                address_id=self.addressId,
+                weight=self.weight,
+                number=order.id,
+                name=order.first_name,
+                surname=order.last_name,
+                company=order.company,
+                email=order.email,
+                addressId=Configuration.get_solo().zasilkovna_address_id,
+                
+                #FIXME: udělat logiku pro počítaní dobírky a hodnoty zboží
+                cod=100.00,
+                value=100.00,
+
+                currency=Configuration.get_solo().currency,
+                eshop= Configuration.get_solo().name,
+            )
             self.packet_id = response['packet_id']
             self.barcode = response['barcode']