#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# -----------------------------------------------------------------------------------------------------------
# Copyright (c) 2025 Huawei Technologies Co., Ltd.
# This program is free software, you can redistribute it and/or modify it under the terms and conditions of
# CANN Open Software License Agreement Version 2.0 (the "License").
# Please refer to the License for details. You may not use this file except in compliance with the License.
# THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED,
# INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE.
# See LICENSE in the root of the software repository for the full text of the License.
# -----------------------------------------------------------------------------------------------------------

import ctypes
import os
import sysconfig

import torch
import torch_npu

__all__ = []


def _load_depend_libs():
    PYTHON_PKG_PATH = sysconfig.get_paths()["purelib"]
    TORCH_LIB_PATH = os.path.join(PYTHON_PKG_PATH, "torch/lib")
    TORCH_NPU_LIB_PATH = os.path.join(PYTHON_PKG_PATH, "torch_npu/lib")
    TORCH_CATLASS_LIB_PATH = os.path.join(PYTHON_PKG_PATH, "torch_catlass/lib")
    CURRENT_LD_LIBRARY_PATH = os.environ.get("LD_LIBRARY_PATH", "").strip(":")
    LD_LIBRARY_PATH = ":".join(
        [CURRENT_LD_LIBRARY_PATH]
        + [TORCH_LIB_PATH, TORCH_NPU_LIB_PATH, TORCH_CATLASS_LIB_PATH]
    )
    os.environ["LD_LIBRARY_PATH"] = LD_LIBRARY_PATH.strip(":")

    CATLASS_KERNEL_PATH = os.path.join(TORCH_CATLASS_LIB_PATH, "libcatlass_kernel.so")
    if os.path.isfile(CATLASS_KERNEL_PATH):
        ctypes.CDLL(CATLASS_KERNEL_PATH)


_load_depend_libs()

from torch_catlass._C import *