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# MIT License
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# Copyright (c) 2021 - 2023 Advanced Micro Devices, Inc. All Rights Reserved.
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# Common helper routines for testing collateral


import inspect
import os
import shutil


def check_resource_allocation():
    """Check if CTEST resource allocation is enabled for parallel testing and set
    HIP_VISIBLE_DEVICES variable accordingly with assigned gpu index.
    """

    if "CTEST_RESOURCE_GROUP_COUNT" not in os.environ:
        return

    if "CTEST_RESOURCE_GROUP_0_GPUS" in os.environ:
        resource = os.environ["CTEST_RESOURCE_GROUP_0_GPUS"]
        # extract assigned gpu id from env var: example format -> 'id:0,slots:1'
        for item in resource.split(","):
            key, value = item.split(":")
            if key == "id":
                os.environ["HIP_VISIBLE_DEVICES"] = value
                return

    return


def get_output_dir(suffix="_output", clean_existing=True):
    """Provides a unique output directory based on the name of the calling test function with a suffix applied.

    Args:
        suffix (str, optional): suffix to append to output_dir. Defaults to "_output".
        clean_existing (bool, optional): Whether to remove existing directory if exists. Defaults to True.
    """

    output_dir = inspect.stack()[1].function + suffix
    if clean_existing:
        if os.path.exists(output_dir):
            shutil.rmtree(output_dir)
    return output_dir