/* ************************************************************************
 * Copyright (C) 2023 Advanced Micro Devices, Inc. All rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * ************************************************************************ */

#include "rocsparse_sparse_to_sparse.hpp"
#include "utility.h"

static rocsparse_status
    rocsparse_sparse_to_sparse_buffer_size_core(rocsparse_handle                 handle,
                                                rocsparse_sparse_to_sparse_descr descr,
                                                rocsparse_const_spmat_descr      source,
                                                rocsparse_spmat_descr            target,
                                                rocsparse_sparse_to_sparse_stage stage,
                                                size_t* buffer_size_in_bytes)
{
    buffer_size_in_bytes[0]                                  = 0;
    static constexpr const bool compute_buffer_size_in_bytes = true;
    RETURN_IF_ROCSPARSE_ERROR(rocsparse_internal_sparse_to_sparse(handle,
                                                                  descr,
                                                                  source,
                                                                  target,
                                                                  stage,
                                                                  buffer_size_in_bytes,
                                                                  nullptr,
                                                                  compute_buffer_size_in_bytes));
    return rocsparse_status_success;
}

static rocsparse_status
    rocsparse_sparse_to_sparse_buffer_size_quickreturn(rocsparse_handle                 handle,
                                                       rocsparse_sparse_to_sparse_descr descr,
                                                       rocsparse_const_spmat_descr      source,
                                                       rocsparse_spmat_descr            target,
                                                       rocsparse_sparse_to_sparse_stage stage,
                                                       size_t* buffer_size_in_bytes)
{
    return rocsparse_status_continue;
}

static rocsparse_status
    rocsparse_sparse_to_sparse_buffer_size_checkarg(rocsparse_handle                 handle,
                                                    rocsparse_sparse_to_sparse_descr descr,
                                                    rocsparse_const_spmat_descr      source,
                                                    rocsparse_spmat_descr            target,
                                                    rocsparse_sparse_to_sparse_stage stage,
                                                    size_t* buffer_size_in_bytes)
{
    //
    ROCSPARSE_CHECKARG_HANDLE(0, handle);
    ROCSPARSE_CHECKARG_POINTER(1, descr);
    ROCSPARSE_CHECKARG_POINTER(2, source);
    ROCSPARSE_CHECKARG_POINTER(3, target);
    ROCSPARSE_CHECKARG_ENUM(4, stage);
    ROCSPARSE_CHECKARG_POINTER(5, buffer_size_in_bytes);
    //
    const rocsparse_status status = rocsparse_sparse_to_sparse_buffer_size_quickreturn(
        handle, descr, source, target, stage, buffer_size_in_bytes);
    if(status != rocsparse_status_continue)
    {
        RETURN_IF_ROCSPARSE_ERROR(status);
        return rocsparse_status_success;
    }
    //
    return rocsparse_status_continue;
    //
}

template <typename... P>
rocsparse_status rocsparse_sparse_to_sparse_buffer_size_impl(P&&... p)
{
    const rocsparse_status status = rocsparse_sparse_to_sparse_buffer_size_checkarg(p...);
    if(status != rocsparse_status_continue)
    {
        RETURN_IF_ROCSPARSE_ERROR(status);
        return rocsparse_status_success;
    }

    RETURN_IF_ROCSPARSE_ERROR(rocsparse_sparse_to_sparse_buffer_size_core(p...));
    return rocsparse_status_success;
}

extern "C" rocsparse_status
    rocsparse_sparse_to_sparse_buffer_size(rocsparse_handle                 handle,
                                           rocsparse_sparse_to_sparse_descr descr,
                                           rocsparse_const_spmat_descr      source,
                                           rocsparse_spmat_descr            target,
                                           rocsparse_sparse_to_sparse_stage stage,
                                           size_t*                          buffer_size_in_bytes)
try
{
    RETURN_IF_ROCSPARSE_ERROR(rocsparse_sparse_to_sparse_buffer_size_impl(
        handle, descr, source, target, stage, buffer_size_in_bytes));
    return rocsparse_status_success;
}
catch(...)
{
    RETURN_ROCSPARSE_EXCEPTION();
}
