# Copyright (c) 2023-2024, Zexin He
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# -*- coding: utf-8 -*-
# @Organization  : Tongyi Lab, Alibaba
# @Author        : Lingteng Qiu
# @Email         : 220019047@link.cuhk.edu.cn
# @Time          : 2025-08-31 10:02:15
# @Function      : HTTP proxy decorator for data loading

import os

NO_PROXY = "OPENLRM_NO_DATA_PROXY" in os.environ


def no_proxy(func):
    """Decorator to disable proxy but then restore after the function call."""

    def wrapper(*args, **kwargs):
        # http_proxy, https_proxy, HTTP_PROXY, HTTPS_PROXY, all_proxy
        http_proxy = os.environ.get("http_proxy")
        https_proxy = os.environ.get("https_proxy")
        HTTP_PROXY = os.environ.get("HTTP_PROXY")
        HTTPS_PROXY = os.environ.get("HTTPS_PROXY")
        all_proxy = os.environ.get("all_proxy")
        os.environ["http_proxy"] = ""
        os.environ["https_proxy"] = ""
        os.environ["HTTP_PROXY"] = ""
        os.environ["HTTPS_PROXY"] = ""
        os.environ["all_proxy"] = ""
        try:
            return func(*args, **kwargs)
        finally:
            os.environ["http_proxy"] = http_proxy
            os.environ["https_proxy"] = https_proxy
            os.environ["HTTP_PROXY"] = HTTP_PROXY
            os.environ["HTTPS_PROXY"] = HTTPS_PROXY
            os.environ["all_proxy"] = all_proxy

    if NO_PROXY:
        return wrapper
    else:
        return func