Merge pull request #5769 from smithellis/1566-anonymous-user-zd-for-main

Anonymous user doesn't overwrite username

kitsune/customercare/zendesk.py

@@ -21,6 +21,14 @@ def __init__(self, **kwargs):
         self.client = Zenpy(**creds)
 
     def _user_to_zendesk_user(self, user, email):
+        """Given a Django user, return a Zendesk user."""
+        # If the user already exists in Zendesk return
+        # the Zendesk user object
+        # instead of creating a new one
+        if zuser := self.get_user_by_email(email):
+            return zuser
+        # If the user is not authenticated, we can't save anything to
+        # AnonymousUser Profile as it has none
         if not user.is_authenticated:
             name = "Anonymous User"
             locale = "en-US"
@@ -45,6 +53,21 @@ def _user_to_zendesk_user(self, user, email):
             external_id=external_id,
         )
 
+    def get_user_by_email(self, email):
+        """Given an email, return a user from Zendesk."""
+        # This returns a generator, but we only want/expect one user
+        # If it returns more than one, we should fail
+        # Otherwise return the Zendesk user object
+        search_results = self.client.search(type="user", query=f"email:{email}")
+
+        user_found = None
+        for user in search_results:
+            if user_found is not None:
+                raise ValueError(f"Found more than one user with email {email}")
+            user_found = user
+
+        return user_found
+
     def create_user(self, user, email=""):
         """Given a Django user, create a user in Zendesk."""
         zendesk_user = self._user_to_zendesk_user(user, email=email)