refactor: update user role assignment to use RoleName constants in team service

Author: vinit717

todo/services/team_service.py

@@ -7,6 +7,7 @@
 from todo.repositories.team_creation_invite_code_repository import TeamCreationInviteCodeRepository
 from todo.repositories.team_repository import TeamRepository, UserTeamDetailsRepository
 from todo.constants.messages import AppMessages
+from todo.constants.role import RoleName
 from todo.utils.invite_code_utils import generate_invite_code
 from typing import List
 from todo.models.audit_log import AuditLogModel
@@ -108,16 +109,19 @@ def create_team(cls, dto: CreateTeamDTO, created_by_user_id: str) -> CreateTeamR
 
             team_id_str = str(created_team.id)
 
-            cls._assign_user_role(created_by_user_id, team_id_str, "member")
-            cls._assign_user_role(created_by_user_id, team_id_str, "admin")
-            cls._assign_user_role(created_by_user_id, team_id_str, "owner")
+            cls._assign_user_role(created_by_user_id, team_id_str, RoleName.MEMBER.value)
+            cls._assign_user_role(created_by_user_id, team_id_str, RoleName.ADMIN.value)
+            cls._assign_user_role(created_by_user_id, team_id_str, RoleName.OWNER.value)
+
+            users_with_roles = {created_by_user_id}
 
             for member_id in member_ids:
-                if member_id != created_by_user_id:
-                    cls._assign_user_role(member_id, team_id_str, "member")
+                if member_id not in users_with_roles:
+                    cls._assign_user_role(member_id, team_id_str, RoleName.MEMBER.value)
+                    users_with_roles.add(member_id)
 
-            if dto.poc_id and dto.poc_id != created_by_user_id:
-                cls._assign_user_role(dto.poc_id, team_id_str, "member")
+            if dto.poc_id and dto.poc_id not in users_with_roles:
+                cls._assign_user_role(dto.poc_id, team_id_str, RoleName.MEMBER.value)
 
             # Audit log for team creation
             AuditLogRepository.create(
@@ -286,7 +290,7 @@ def join_team_by_invite_code(cls, invite_code: str, user_id: str) -> TeamDTO:
         UserTeamDetailsRepository.create(user_team)
 
         # NEW: Assign default member role using new role system
-        cls._assign_user_role(user_id, str(team.id), "member")
+        cls._assign_user_role(user_id, str(team.id), RoleName.MEMBER.value)
 
         # Audit log for team join
         AuditLogRepository.create(
@@ -446,7 +450,7 @@ def add_team_members(cls, team_id: str, member_ids: List[str], added_by_user_id:
 
                 # NEW: Assign default member roles using new role system
                 for member_id in member_ids:
-                    cls._assign_user_role(member_id, team_id, "member")
+                    cls._assign_user_role(member_id, team_id, RoleName.MEMBER.value)
 
             # Audit log for team member addition
             for member_id in member_ids: