PaypalProvider: allow to make requests without payment parameter

Author: PetrDlouhy

payments/paypal/__init__.py

@@ -127,7 +127,8 @@ def http_request(self, payment, *args, http_method=None, **kwargs):
         except ValueError:
             data = {}
         if 400 <= response.status_code <= 500:
-            self.set_error_data(payment, data)
+            if payment is not None:
+                self.set_error_data(payment, data)
             logger.debug(data)
             message = "Paypal error"
             if response.status_code == 400:
@@ -139,9 +140,11 @@ def http_request(self, payment, *args, http_method=None, **kwargs):
                 message = error_data.get("message", message)
             else:
                 logger.warning(message, extra={"status_code": response.status_code})
-            payment.change_status(PaymentStatus.ERROR, message)
+            if payment is not None:
+                payment.change_status(PaymentStatus.ERROR, message)
             raise PaymentError(message)
-        self.set_response_data(payment, data)
+        if payment is not None:
+            self.set_response_data(payment, data)
         return data
 
     def post(self, payment, *args, **kwargs):
@@ -157,17 +160,18 @@ def get_last_response(self, payment, is_auth=False):
         return extra_data.get("response", {})
 
     def get_access_token(self, payment):
-        last_auth_response = self.get_last_response(payment, is_auth=True)
-        created = payment.created
-        now = timezone.now()
-        if (
-            "access_token" in last_auth_response
-            and "expires_in" in last_auth_response
-            and (created + timedelta(seconds=last_auth_response["expires_in"])) > now
-        ):
-            return "{} {}".format(
-                last_auth_response["token_type"], last_auth_response["access_token"]
-            )
+        if payment is not None:
+            last_auth_response = self.get_last_response(payment, is_auth=True)
+            created = payment.created
+            now = timezone.now()
+            if (
+                "access_token" in last_auth_response
+                and "expires_in" in last_auth_response
+                and (created + timedelta(seconds=last_auth_response["expires_in"])) > now
+            ):
+                return "{} {}".format(
+                    last_auth_response["token_type"], last_auth_response["access_token"]
+                )
         headers = {"Accept": "application/json", "Accept-Language": "en_US"}
         post = {"grant_type": "client_credentials"}
         response = requests.post(
@@ -178,8 +182,9 @@ def get_access_token(self, payment):
         )
         response.raise_for_status()
         data = response.json()
-        last_auth_response.update(data)
-        self.set_response_data(payment, last_auth_response, is_auth=True)
+        if payment is not None:
+            last_auth_response.update(data)
+            self.set_response_data(payment, last_auth_response, is_auth=True)
         return "{} {}".format(data["token_type"], data["access_token"])
 
     def get_transactions_items(self, payment):