import base64
from elastic.es_connect import get_user_by_username as es_get_user_by_username

def get_user_by_username(username: str):
    es_user = es_get_user_by_username(username)
    if es_user:
        return {
            'user_id': es_user.get('user_id', 0),
            'username': es_user.get('username', ''),
            'password_hash': es_user.get('password_hash'),
            'password_salt': es_user.get('password_salt'),
            'permission': es_user.get('permission', 1),
        }
    return None