/*! \file */
/* ************************************************************************
 * Copyright (C) 2021-2024 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_coosm.hpp"
#include "control.h"
#include "rocsparse_csrsm.hpp"
#include "utility.h"
#include <rocprim/rocprim.hpp>

#include "../conversion/rocsparse_coo2csr.hpp"

template <typename I, typename T>
rocsparse_status rocsparse::coosm_solve_core(rocsparse_handle          handle,
                                             rocsparse_operation       trans_A,
                                             rocsparse_operation       trans_B,
                                             I                         m,
                                             I                         nrhs,
                                             int64_t                   nnz,
                                             const T*                  alpha_device_host,
                                             const rocsparse_mat_descr descr,
                                             const T*                  coo_val,
                                             const I*                  coo_row_ind,
                                             const I*                  coo_col_ind,
                                             T*                        B,
                                             int64_t                   ldb,
                                             rocsparse_order           order_B,
                                             rocsparse_mat_info        info,
                                             rocsparse_solve_policy    policy,
                                             void*                     temp_buffer)
{

    // Buffer
    char* ptr = reinterpret_cast<char*>(temp_buffer);

    if(std::is_same<I, int32_t>() && nnz < std::numeric_limits<int32_t>::max())
    {
        int32_t* csr_row_ptr = reinterpret_cast<int32_t*>(ptr);
        ptr += sizeof(int32_t) * (m / 256 + 1) * 256;

        const I* csr_col_ind = coo_col_ind;
        const T* csr_val     = coo_val;

        RETURN_IF_ROCSPARSE_ERROR(rocsparse::csrsm_solve_template(handle,
                                                                  trans_A,
                                                                  trans_B,
                                                                  m,
                                                                  nrhs,
                                                                  (int32_t)nnz,
                                                                  alpha_device_host,
                                                                  descr,
                                                                  csr_val,
                                                                  csr_row_ptr,
                                                                  csr_col_ind,
                                                                  B,
                                                                  ldb,
                                                                  order_B,
                                                                  info,
                                                                  policy,
                                                                  ptr));
        return rocsparse_status_success;
    }
    else
    {
        int64_t* csr_row_ptr = reinterpret_cast<int64_t*>(ptr);
        ptr += sizeof(int64_t) * (m / 256 + 1) * 256;

        const I* csr_col_ind = coo_col_ind;
        const T* csr_val     = coo_val;

        RETURN_IF_ROCSPARSE_ERROR(rocsparse::csrsm_solve_template(handle,
                                                                  trans_A,
                                                                  trans_B,
                                                                  m,
                                                                  nrhs,
                                                                  nnz,
                                                                  alpha_device_host,
                                                                  descr,
                                                                  csr_val,
                                                                  csr_row_ptr,
                                                                  csr_col_ind,
                                                                  B,
                                                                  ldb,
                                                                  order_B,
                                                                  info,
                                                                  policy,
                                                                  ptr));
        return rocsparse_status_success;
    }
}

rocsparse_status rocsparse::coosm_solve_quickreturn(rocsparse_handle          handle,
                                                    rocsparse_operation       trans_A,
                                                    rocsparse_operation       trans_B,
                                                    int64_t                   m,
                                                    int64_t                   nrhs,
                                                    int64_t                   nnz,
                                                    const void*               alpha_device_host,
                                                    const rocsparse_mat_descr descr,
                                                    const void*               coo_val,
                                                    const void*               coo_row_ind,
                                                    const void*               coo_col_ind,
                                                    void*                     B,
                                                    int64_t                   ldb,
                                                    rocsparse_order           order_B,
                                                    rocsparse_mat_info        info,
                                                    rocsparse_solve_policy    policy,
                                                    void*                     temp_buffer)
{
    if(m == 0 || nrhs == 0)
    {
        return rocsparse_status_success;
    }
    return rocsparse_status_continue;
}

#define INSTANTIATE(ITYPE, TTYPE)                                                                \
    template rocsparse_status rocsparse::coosm_solve_core(rocsparse_handle    handle,            \
                                                          rocsparse_operation trans_A,           \
                                                          rocsparse_operation trans_B,           \
                                                          ITYPE               m,                 \
                                                          ITYPE               nrhs,              \
                                                          int64_t             nnz,               \
                                                          const TTYPE*        alpha_device_host, \
                                                          const rocsparse_mat_descr descr,       \
                                                          const TTYPE*              coo_val,     \
                                                          const ITYPE*              coo_row_ind, \
                                                          const ITYPE*              coo_col_ind, \
                                                          TTYPE*                    B,           \
                                                          int64_t                   ldb,         \
                                                          rocsparse_order           order_B,     \
                                                          rocsparse_mat_info        info,        \
                                                          rocsparse_solve_policy    policy,      \
                                                          void*                     temp_buffer);

INSTANTIATE(int32_t, float);
INSTANTIATE(int32_t, double);
INSTANTIATE(int32_t, rocsparse_float_complex);
INSTANTIATE(int32_t, rocsparse_double_complex);
INSTANTIATE(int64_t, float);
INSTANTIATE(int64_t, double);
INSTANTIATE(int64_t, rocsparse_float_complex);
INSTANTIATE(int64_t, rocsparse_double_complex);
#undef INSTANTIATE
