from flask import has_request_context, _request_ctx_stack, current_app
from werkzeug.local import LocalProxy


current_user = LocalProxy(lambda: _get_user())


def _get_user():
    if has_request_context() and not hasattr(_request_ctx_stack.top, "user"):
        current_app.auth_manager._load_user()

    return getattr(_request_ctx_stack.top, "user", None)