# ----------------------------------------------------------------------------
# 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.
# ----------------------------------------------------------------------------

if (ascend_hal_FOUND)
    message(STATUS "Package ascend_hal has been found.")
    return()
endif()

set(_cmake_targets_defined "")
set(_cmake_targets_not_defined "")
set(_cmake_expected_targets "")
foreach(_cmake_expected_target IN ITEMS ascend_hal_stub ascend_hal_headers)
    list(APPEND _cmake_expected_targets "${_cmake_expected_target}")
    if(TARGET "${_cmake_expected_target}")
        list(APPEND _cmake_targets_defined "${_cmake_expected_target}")
    else()
        list(APPEND _cmake_targets_not_defined "${_cmake_expected_target}")
    endif()
endforeach()
unset(_cmake_expected_target)

if(_cmake_targets_defined STREQUAL _cmake_expected_targets)
    unset(_cmake_targets_defined)
    unset(_cmake_targets_not_defined)
    unset(_cmake_expected_targets)
    unset(CMAKE_IMPORT_FILE_VERSION)
    cmake_policy(POP)
    return()
endif()

if(NOT _cmake_targets_defined STREQUAL "")
    string(REPLACE ";" ", " _cmake_targets_defined_text "${_cmake_targets_defined}")
    string(REPLACE ";" ", " _cmake_targets_not_defined_text "${_cmake_targets_not_defined}")
    message(FATAL_ERROR "Some (but not all) targets in this export set were already defined.\nTargets Defined: ${_cmake_targets_defined_text}\nTargets not yet defined: ${_cmake_targets_not_defined_text}\n")
endif()
unset(_cmake_targets_defined)
unset(_cmake_targets_not_defined)
unset(_cmake_expected_targets)

find_path(_CANN_HAL_INCLUDE_DIR
    NAMES driver/ascend_hal.h
    PATH_SUFFIXES pkg_inc
    NO_CMAKE_SYSTEM_PATH
    NO_CMAKE_FIND_ROOT_PATH
)

set(HAL_STUB_PATH_SUFFIX "devlib")

if(PRODUCT_SIDE STREQUAL "device")
    set(HAL_STUB_PATH_SUFFIX "devlib/device")
endif()

find_library(_CANN_ascend_hal_SHARED_LIBRARY
    NAMES libascend_hal.so
    PATH_SUFFIXES ${HAL_STUB_PATH_SUFFIX}
    NO_CMAKE_SYSTEM_PATH
    NO_CMAKE_FIND_ROOT_PATH)

include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(ascend_hal
    FOUND_VAR
        ascend_hal_FOUND
    REQUIRED_VARS
        _CANN_HAL_INCLUDE_DIR
        _CANN_ascend_hal_SHARED_LIBRARY
)

if(ascend_hal_FOUND)
    add_library(ascend_hal_headers INTERFACE IMPORTED)
    set_target_properties(ascend_hal_headers PROPERTIES
        INTERFACE_INCLUDE_DIRECTORIES "${_CANN_HAL_INCLUDE_DIR}/driver"
    )

    add_library(ascend_hal SHARED IMPORTED)
    set_target_properties(ascend_hal PROPERTIES
        INTERFACE_LINK_LIBRARIES "ascend_hal_headers"
        IMPORTED_LOCATION "${_CANN_ascend_hal_SHARED_LIBRARY}")

    add_library(ascend_hal_stub SHARED IMPORTED)
    set_target_properties(ascend_hal_stub PROPERTIES
        INTERFACE_LINK_LIBRARIES "ascend_hal_headers"
        IMPORTED_LOCATION "${_CANN_ascend_hal_SHARED_LIBRARY}"
    )

    include(CMakePrintHelpers)
    cmake_print_properties(TARGETS ascend_hal_headers
        PROPERTIES INTERFACE_INCLUDE_DIRECTORIES
    )
endif()