fix all pylint warnings, add tests (wip) fix recap

backend/src/users/service.py

@@ -1,7 +1,6 @@
-import src.messages as messages
 import src.users.exceptions as exceptions
 from sqlmodel import Session, select
-from src import models
+from src import messages, models
 
 
 def get_all(
@@ -48,7 +47,8 @@ def get_or_create_user(session: Session, user_create: models.UserCreate):
     user = session.exec(statement).first()
     if user:
         user_role_names = [r.name for r in user.roles]
-        if user_role_names != user_create.role_names or user.name != user_create.name:
+        if (user_role_names != user_create.role_names or
+            user.name != user_create.name):
             user = update_one(session, user.id, user_create)
         return user
     user = create_one(session, user_create)
@@ -119,3 +119,9 @@ def delete_one(session: Session, _id: int) -> models.UserPublic:
     session.delete(user)
     session.commit()
     return result
+
+
+def is_allowed(
+    logged_user: models.User,
+):
+    return len(logged_user.roles) >= 5