/*! \file */
/* ************************************************************************
 * Copyright (C) 2021-2023 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
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 * 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
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 * THE SOFTWARE.
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#include "definitions.h"
#include "rocsparse_coosm.hpp"
#include "rocsparse_csrsm.hpp"
#include "utility.h"
#include <rocprim/rocprim.hpp>

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

template <typename I, typename T>
static rocsparse_status rocsparse_coosm_buffer_size_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,
                                                         const T*                  B,
                                                         int64_t                   ldb,
                                                         rocsparse_mat_info        info,
                                                         rocsparse_solve_policy    policy,
                                                         size_t*                   buffer_size)
{

    if(std::is_same<I, int32_t>() && nnz < std::numeric_limits<int32_t>::max())
    {
        // Trick since it is not used in csrsm_buffer_size, otherwise we need to create a proper ptr array for nothing.
        const int32_t* ptr = (const int32_t*)0x4;
        RETURN_IF_ROCSPARSE_ERROR(rocsparse_csrsm_buffer_size_template(handle,
                                                                       trans_A,
                                                                       trans_B,
                                                                       m,
                                                                       nrhs,
                                                                       (int32_t)nnz,
                                                                       alpha_device_host,
                                                                       descr,
                                                                       coo_val,
                                                                       ptr,
                                                                       coo_col_ind,
                                                                       B,
                                                                       ldb,
                                                                       info,
                                                                       policy,
                                                                       buffer_size));

        // For coosm we first convert from COO to CSR format.
        *buffer_size += sizeof(int32_t) * (m / 256 + 1) * 256;
    }
    else
    {
        // Trick since it is not used in csrsm_buffer_size, otherwise we need to create a proper ptr array for nothing.
        const int64_t* ptr = (const int64_t*)0x4;
        RETURN_IF_ROCSPARSE_ERROR(rocsparse_csrsm_buffer_size_template(handle,
                                                                       trans_A,
                                                                       trans_B,
                                                                       m,
                                                                       nrhs,
                                                                       nnz,
                                                                       alpha_device_host,
                                                                       descr,
                                                                       coo_val,
                                                                       ptr,
                                                                       coo_col_ind,
                                                                       B,
                                                                       ldb,
                                                                       info,
                                                                       policy,
                                                                       buffer_size));

        // For coosm we first convert from COO to CSR format.
        *buffer_size += sizeof(int64_t) * (m / 256 + 1) * 256;
    }

    return rocsparse_status_success;
}

static rocsparse_status rocsparse_coosm_buffer_size_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,
                                                                const void*            B,
                                                                int64_t                ldb,
                                                                rocsparse_mat_info     info,
                                                                rocsparse_solve_policy policy,
                                                                size_t*                buffer_size)
{
    if(m == 0 || nrhs == 0)
    {
        *buffer_size = 0;
        return rocsparse_status_success;
    }

    return rocsparse_status_continue;
}

static rocsparse_status rocsparse_coosm_buffer_size_checkarg(rocsparse_handle    handle, //0
                                                             rocsparse_operation trans_A, //1
                                                             rocsparse_operation trans_B, //2
                                                             int64_t             m, //3
                                                             int64_t             nrhs, //4
                                                             int64_t             nnz, //5
                                                             const void* alpha_device_host, //6
                                                             const rocsparse_mat_descr descr, //7
                                                             const void*               coo_val, //8
                                                             const void*        coo_row_ind, //9
                                                             const void*        coo_col_ind, //10
                                                             const void*        B, //11
                                                             int64_t            ldb, //12
                                                             rocsparse_mat_info info, //13
                                                             rocsparse_solve_policy policy, //14
                                                             size_t* buffer_size) //15
{
    ROCSPARSE_CHECKARG_HANDLE(0, handle);
    ROCSPARSE_CHECKARG_ENUM(1, trans_A);
    ROCSPARSE_CHECKARG_ENUM(2, trans_B);
    ROCSPARSE_CHECKARG_SIZE(3, m);
    ROCSPARSE_CHECKARG_SIZE(4, nrhs);
    ROCSPARSE_CHECKARG(
        12, ldb, (trans_B == rocsparse_operation_none && ldb < m), rocsparse_status_invalid_size);
    ROCSPARSE_CHECKARG(12,
                       ldb,
                       ((trans_B == rocsparse_operation_transpose
                         || trans_B == rocsparse_operation_conjugate_transpose)
                        && ldb < nrhs),
                       rocsparse_status_invalid_size);

    ROCSPARSE_CHECKARG_SIZE(5, nnz);
    ROCSPARSE_CHECKARG_POINTER(7, descr);
    ROCSPARSE_CHECKARG(
        7, descr, (descr->type != rocsparse_matrix_type_general), rocsparse_status_not_implemented);
    ROCSPARSE_CHECKARG(7,
                       descr,
                       (descr->storage_mode != rocsparse_storage_mode_sorted),
                       rocsparse_status_not_implemented);

    ROCSPARSE_CHECKARG_POINTER(13, info);
    ROCSPARSE_CHECKARG_ENUM(14, policy);

    const rocsparse_status status = rocsparse_coosm_buffer_size_quickreturn(handle,
                                                                            trans_A,
                                                                            trans_B,
                                                                            m,
                                                                            nrhs,
                                                                            nnz,
                                                                            alpha_device_host,
                                                                            descr,
                                                                            coo_val,
                                                                            coo_row_ind,
                                                                            coo_col_ind,
                                                                            B,
                                                                            ldb,
                                                                            info,
                                                                            policy,
                                                                            buffer_size);
    if(status != rocsparse_status_continue)
    {
        RETURN_IF_ROCSPARSE_ERROR(status);
        return rocsparse_status_success;
    }

    ROCSPARSE_CHECKARG_POINTER(6, alpha_device_host);
    ROCSPARSE_CHECKARG_ARRAY(8, nnz, coo_val);
    ROCSPARSE_CHECKARG_ARRAY(9, nnz, coo_row_ind);
    ROCSPARSE_CHECKARG_ARRAY(10, nnz, coo_col_ind);
    ROCSPARSE_CHECKARG_POINTER(11, B);
    ROCSPARSE_CHECKARG_POINTER(15, buffer_size);

    return rocsparse_status_continue;
}

template <typename I, typename T>
rocsparse_status rocsparse_coosm_buffer_size_template(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,
                                                      const T*                  B,
                                                      int64_t                   ldb,
                                                      rocsparse_mat_info        info,
                                                      rocsparse_solve_policy    policy,
                                                      size_t*                   buffer_size)
{

    log_trace(handle,
              replaceX<T>("rocsparse_Xcoosm_buffer_size"),
              trans_A,
              trans_B,
              m,
              nrhs,
              nnz,
              LOG_TRACE_SCALAR_VALUE(handle, alpha_device_host),
              (const void*&)descr,
              (const void*&)coo_val,
              (const void*&)coo_row_ind,
              (const void*&)coo_col_ind,
              (const void*&)B,
              ldb,
              (const void*&)info,
              policy,
              (const void*&)buffer_size);

    const rocsparse_status status = rocsparse_coosm_buffer_size_checkarg(handle,
                                                                         trans_A,
                                                                         trans_B,
                                                                         m,
                                                                         nrhs,
                                                                         nnz,
                                                                         alpha_device_host,
                                                                         descr,
                                                                         coo_val,
                                                                         coo_row_ind,
                                                                         coo_col_ind,
                                                                         B,
                                                                         ldb,
                                                                         info,
                                                                         policy,
                                                                         buffer_size);

    if(status != rocsparse_status_continue)
    {
        RETURN_IF_ROCSPARSE_ERROR(status);
        return rocsparse_status_success;
    }

    RETURN_IF_ROCSPARSE_ERROR(rocsparse_coosm_buffer_size_core(handle,
                                                               trans_A,
                                                               trans_B,
                                                               m,
                                                               nrhs,
                                                               nnz,
                                                               alpha_device_host,
                                                               descr,
                                                               coo_val,
                                                               coo_row_ind,
                                                               coo_col_ind,
                                                               B,
                                                               ldb,
                                                               info,
                                                               policy,
                                                               buffer_size));

    return rocsparse_status_success;
}

#define INSTANTIATE(ITYPE, TTYPE)                                   \
    template rocsparse_status rocsparse_coosm_buffer_size_template( \
        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,                      \
        const TTYPE*              B,                                \
        int64_t                   ldb,                              \
        rocsparse_mat_info        info,                             \
        rocsparse_solve_policy    policy,                           \
        size_t*                   buffer_size);

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
