[reverseDNS] add basic logic

uncloud_pay/models.py

@@ -454,6 +454,16 @@ class Product(models.Model):
 
         obj.recurring_periods.add(recurring_period, through_defaults= { 'is_default': True })
 
+        obj, created = cls.objects.get_or_create(name="reverse DNS",
+                                                 description="Reverse DNS network",
+                                                 currency=Currency.CHF,
+                                                 config={
+                                                     'parameters': [
+                                                         'network'
+                                                     ]
+                                                 })
+        obj.recurring_periods.add(recurring_period, through_defaults= { 'is_default': True })
+
 
     def __str__(self):
         return f"{self.name} - {self.description}"
@@ -968,6 +978,13 @@ class Order(models.Model):
 
         return (one_time_price, recurring_price, config)
 
+    def check_parameters(self):
+        if 'parameters' in self.product.config:
+            for parameter in self.product.config['parameters']:
+                if not parameter in self.config['parameters']:
+                    raise ValidationError(f"Required parameter '{parameter}' is missing.")
+
+
     def save(self, *args, **kwargs):
         # Calculate the price of the order when we create it
         # IMMUTABLE fields -- need to create new order to modify them
@@ -983,11 +1000,12 @@ class Order(models.Model):
             except ObjectDoesNotExist:
                 raise ValidationError(f"Recurring Period {self.recurring_period} not allowed for product {self.product}")
 
+        self.check_parameters()
+
         if self.ending_date and self.ending_date < self.starting_date:
             raise ValidationError("End date cannot be before starting date")
 
 
-
         super().save(*args, **kwargs)