feat: setting manager for a deal

services/user.py

@@ -1,4 +1,4 @@
-from sqlalchemy import select, update, delete, insert
+from sqlalchemy import select, update, delete, insert, and_
 
 from models import User, user_position, user_pay_rate
 from services.base import BaseService
@@ -16,6 +16,16 @@ class UserService(BaseService):
         users_schemas = [UserSchema.model_validate(user) for user in users]
         return GetAllUsersResponse(users=users_schemas)
 
+    async def get_managers(self) -> GetManagersResponse:
+        stmt = (
+            select(User)
+            .order_by(User.id.desc())
+            .where(and_(User.is_deleted == False, User.role_key == "employee"))
+        )
+        users = (await self.session.scalars(stmt)).all()
+        users_schemas = [UserSchema.model_validate(user) for user in users]
+        return GetManagersResponse(managers=users_schemas)
+
     async def get_by_id(self, user_id: int) -> Optional[User]:
         return await self.session.scalar(select(User).where(User.id == user_id))