/**
 * Copyright (c) 2026 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.
 */

/**
 * NOTE: Portions of this code were AI-generated and have been
 * technically reviewed for functional accuracy and security
 */

#include "log_space.h"
#include "opdev/op_log.h"
#include "opdev/op_dfx.h"
#include "opdev/shape_utils.h"
#include "opdev/make_op_executor.h"
#include "opdev/platform.h"

using namespace op;

namespace l0op {

OP_TYPE_REGISTER(LogSpace);

static const std::initializer_list<op::DataType> AICORE_DTYPE_SUPPORT_LIST = {
    DataType::DT_FLOAT, DataType::DT_FLOAT16, DataType::DT_BF16
};

static bool IsAiCoreSupport(const aclTensor* result)
{
    auto npuArch = GetCurrentPlatformInfo().GetCurNpuArch();
    OP_CHECK(npuArch == NpuArch::DAV_3510,
             OP_LOGE(ACLNN_ERR_PARAM_INVALID,
                     "LogSpace only supports DAV_3510 (Ascend950), got npuArch=%d",
                     static_cast<int>(npuArch)),
             return false);
    OP_CHECK(CheckType(result->GetDataType(), AICORE_DTYPE_SUPPORT_LIST),
             OP_LOGE(ACLNN_ERR_PARAM_INVALID,
                     "LogSpace unsupported dtype: %d (need FLOAT/FLOAT16/BFLOAT16)",
                     static_cast<int>(result->GetDataType())),
             return false);
    return true;
}

static const aclTensor* LogSpaceAiCore(float startF, float endF, int64_t steps, float baseF,
                                       const aclTensor* out, aclOpExecutor* executor)
{
    L0_DFX(LogSpaceAiCore, startF, endF, steps, baseF, out);

    auto ret = ADD_TO_LAUNCHER_LIST_AICORE(
        LogSpace,
        OP_INPUT(),
        OP_OUTPUT(out),
        OP_ATTR(startF, endF, steps, baseF));
    OP_CHECK(ret == ACLNN_SUCCESS,
             OP_LOGE(ACLNN_ERR_INNER_NULLPTR, "LogSpaceAiCore failed."),
             return nullptr);
    return out;
}

const aclTensor* LogSpace(float startF, float endF, int64_t steps, float baseF,
                          const aclTensor* result, aclOpExecutor* executor)
{
    OP_CHECK(IsAiCoreSupport(result),
             OP_LOGE(ACLNN_ERR_PARAM_INVALID, "IsAiCoreSupport check failed."),
             return nullptr);

    // 输出 tensor 由 L2 提供（已是用户传入的 result）。L0 直接复用。
    return LogSpaceAiCore(startF, endF, steps, baseF, result, executor);
}

} // namespace l0op