various updates

uncloud_pay/models.py

@@ -263,7 +263,7 @@ class RecurringPeriod(models.Model):
 ###
 # Bills.
 
-class BillingAddress(models.Model):
+class BillingAddress(UncloudAddress):
     owner = models.ForeignKey(get_user_model(), on_delete=models.CASCADE)
     vat_number = models.CharField(max_length=100, default="", blank=True)
     active = models.BooleanField(default=False)
@@ -300,7 +300,6 @@ class BillingAddress(models.Model):
                                                  active=True)
 
 
-
     @staticmethod
     def get_address_for(user):
         return BillingAddress.objects.get(owner=user, active=True)
@@ -308,7 +307,7 @@ class BillingAddress(models.Model):
     def __str__(self):
         return "{} - {}, {}, {} {}, {}".format(
             self.owner,
-            self.name, self.street, self.postal_code, self.city,
+            self.full_name, self.street, self.postal_code, self.city,
             self.country)
 
 ###
@@ -1059,7 +1058,21 @@ class Bill(models.Model):
         - If the customer is outside EU and outside CH -> do not apply VAT
         """
 
-        provider_country = UncloudProvider.objects.get()
+        provider = UncloudProvider.objects.get()
+
+        # Assume always VAT inside the country
+        if provider.country = self.billing_address.country:
+            vat_rate = VATRate.objects.get(country=provider.country,
+                                       when=self.ending_date)
+        elif self.billing_address.country in EU:
+            # FIXME: need to check for validated vat number
+            if self.billing_address.vat_number:
+                return 0
+            else:
+                return VATRate.objects.get(country=self.biling_address.country,
+                                           when=self.ending_date)
+        else: # non-EU, non-national
+            return 0
 
 
     @classmethod
@@ -1182,6 +1195,13 @@ class BillRecord(models.Model):
         else:
             return self.order.one_time_price
 
+    @property
+    def price(self):
+        if self.is_recurring_record:
+            return self.order.recurring_price
+        else:
+            return self.order.one_time_price
+
     def __str__(self):
         if self.is_recurring_record:
             bill_line =  f"{self.starting_date} - {self.ending_date}: {self.quantity} x {self.order}"