Check before setting up Revolut callback URL

handler/revolut.py

@@ -99,13 +99,25 @@ class Revolut(object):
             return False
 
     def setup_webhook(self):
+        webhooks = self.get_webhooks()
+        if "url" in webhooks.keys():
+            if webhooks["url"] == settings.Revolut.WebhookURL:
+                self.log.info("Webhook exists - skipping setup: {url}", url=webhooks["url"])
+                return True  # Webhook already exists
         self.log.info("Setting up webhook: {url}", url=settings.Revolut.WebhookURL)
         headers = {"Authorization": f"Bearer {self.token}"}
         data = {"url": settings.Revolut.WebhookURL}
         r = requests.post(f"{settings.Revolut.Base}/webhook", data=dumps(data), headers=headers)
         if r.status_code == 204:
             self.log.info("Set up webhook: {url}", url=settings.Revolut.WebhookURL)
-            return dumps({"success": True})
+            return True
         else:
             parsed = r.json()
             self.log.info("Failed setting up webhook: {parsed}", parsed=parsed)
+
+    def get_webhooks(self):
+        headers = {"Authorization": f"Bearer {self.token}"}
+        r = requests.get(f"{settings.Revolut.Base}/webhook", headers=headers)
+        if r.status_code == 200:
+            parsed = r.json()
+            return parsed