use lower-case usernames when dealing with these names as strings

Author: mxmehl

gh_org_mgr/_gh_org.py

@@ -182,16 +182,16 @@ def sync_teams_members(self, dry: bool = False) -> None:  # pylint: disable=too-
         self._get_org_members()
 
         # Get open invitations
-        open_invitations = [user.login for user in self.org.invitations()]
+        open_invitations = [user.login.lower() for user in self.org.invitations()]
 
         for team, team_attrs in self.current_teams.items():
             # Update current team members with dict[NamedUser, str (role)]
             team_attrs["members"] = self._get_current_team_members(team)
 
             # For the rest of the function however, we use just the login name
-            # for each current user
+            # for each current user. All lower-case
             current_team_members = {
-                user.login: role for user, role in team_attrs["members"].items()
+                user.login.lower(): role for user, role in team_attrs["members"].items()
             }
 
             # Handle the team not being configured locally
@@ -209,16 +209,17 @@ def sync_teams_members(self, dry: bool = False) -> None:  # pylint: disable=too-
             else:
                 team_configuration = {}
 
-            # Analog to team_attrs["members"], add members and maintainers to shared
-            # dict with respective role, while maintainer role dominates
+            # Analog to team_attrs["members"], add members and maintainers to
+            # shared dict with respective role, while maintainer role dominates.
+            # All user names shall be lower-case to ease comparison
             configured_users: dict[str, str] = {}
             for config_role in ("member", "maintainer"):
                 team_members = self._get_configured_team_members(
                     team_configuration, team.name, config_role
                 )
                 for team_member in team_members:
-                    # Add user with role to dict
-                    configured_users.update({team_member: config_role})
+                    # Add user with role to dict, in lower-case
+                    configured_users.update({team_member.lower(): config_role})
 
             # Consider all GitHub organisation team maintainers if they are member of the team
             # This is because GitHub API returns them as maintainers even if they are just members
@@ -227,7 +228,7 @@ def sync_teams_members(self, dry: bool = False) -> None:  # pylint: disable=too-
                     logging.debug(
                         "Overriding role of organisation owner '%s' to maintainer", user.login
                     )
-                    configured_users[user.login] = "maintainer"
+                    configured_users[user.login.lower()] = "maintainer"
 
             # Only make edits to the team membership if the current state differs from config
             if configured_users == current_team_members:
@@ -278,8 +279,11 @@ def sync_teams_members(self, dry: bool = False) -> None:  # pylint: disable=too-
             # Loop through all current members. Remove them if they are not configured
             for current_user in current_team_members:
                 if current_user not in configured_users:
+                    logging.debug("User '%s' not found within configured users", current_user)
                     # Turn user to GitHub object, trying to find them
                     if not (gh_user := self._resolve_gh_username(current_user, team.name)):
+                        # If the user cannot be found for some reason, log an
+                        # error and skip this loop
                         continue
                     if team.has_in_members(gh_user):
                         logging.info(
@@ -561,7 +565,7 @@ def _get_configured_repos_and_user_perms(self):
                             )
                         )
                     else:
-                        self.configured_repos_collaborators[repo][team_member] = perm
+                        self.configured_repos_collaborators[repo][team_member.lower()] = perm
 
     def _convert_graphql_perm_to_rest(self, permission: str) -> str:
         """Convert a repo permission coming from the GraphQL API to the ones