/*! \file */
/* ************************************************************************
 * Copyright (C) 2025 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
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 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * ************************************************************************ */

#include "internal/precond/rocsparse_bsrilu0.h"
#include "rocsparse_bsrilu0.hpp"
#include "rocsparse_utility.hpp"
namespace rocsparse
{
    template <typename T>
    static rocsparse_status xbsrilu0_buffer_size(rocsparse_handle          handle,
                                                 rocsparse_direction       dir,
                                                 rocsparse_int             mb,
                                                 rocsparse_int             nnzb,
                                                 const rocsparse_mat_descr descr,
                                                 const T*                  bsr_val,
                                                 const rocsparse_int*      bsr_row_ptr,
                                                 const rocsparse_int*      bsr_col_ind,
                                                 rocsparse_int             block_dim,
                                                 rocsparse_mat_info        info,
                                                 size_t*                   buffer_size)
    {
        ROCSPARSE_ROUTINE_TRACE;

        ROCSPARSE_CHECKARG_HANDLE(0, handle);

        ROCSPARSE_CHECKARG_ENUM(1, dir);

        ROCSPARSE_CHECKARG_SIZE(2, mb);

        ROCSPARSE_CHECKARG_SIZE(3, nnzb);

        ROCSPARSE_CHECKARG_POINTER(4, descr);

        ROCSPARSE_CHECKARG(4,
                           descr,
                           (descr->type != rocsparse_matrix_type_general),
                           rocsparse_status_not_implemented);

        ROCSPARSE_CHECKARG(4,
                           descr,
                           (descr->storage_mode != rocsparse_storage_mode_sorted),
                           rocsparse_status_requires_sorted_storage);

        ROCSPARSE_CHECKARG_ARRAY(5, nnzb, bsr_val);

        ROCSPARSE_CHECKARG_ARRAY(6, mb, bsr_row_ptr);

        ROCSPARSE_CHECKARG_ARRAY(7, nnzb, bsr_col_ind);

        ROCSPARSE_CHECKARG_SIZE(8, block_dim);

        ROCSPARSE_CHECKARG(8, block_dim, (block_dim == 0), rocsparse_status_invalid_size);

        ROCSPARSE_CHECKARG_POINTER(9, info);

        ROCSPARSE_CHECKARG_POINTER(10, buffer_size);

        _rocsparse_spmat_descr bsr(rocsparse_format_bsr,
                                   false,
                                   static_cast<int64_t>(1),
                                   static_cast<int64_t>(mb),
                                   static_cast<int64_t>(mb),
                                   static_cast<int64_t>(nnzb),
                                   dir,
                                   block_dim,
                                   rocsparse::get_datatype<T>(),
                                   bsr_val,
                                   nullptr,
                                   static_cast<int64_t>(0),
                                   rocsparse::get_indextype<rocsparse_int>(),
                                   bsr_row_ptr,
                                   nullptr,
                                   static_cast<int64_t>(0),
                                   rocsparse::get_indextype<rocsparse_int>(),
                                   bsr_col_ind,
                                   nullptr,
                                   static_cast<int64_t>(0),
                                   descr->base,
                                   descr,
                                   info);

        RETURN_IF_ROCSPARSE_ERROR(
            rocsparse::bsrilu0_analysis_buffer_size(handle, &bsr, buffer_size));

        size_t solve_buffer_size = std::numeric_limits<size_t>::max();
        RETURN_IF_ROCSPARSE_ERROR(
            rocsparse::bsrilu0_solve_buffer_size(handle, &bsr, &solve_buffer_size));
        buffer_size[0] = std::max(buffer_size[0], solve_buffer_size);
        return rocsparse_status_success;
    }
}

#define CIMPL(NAME, T)                                                           \
    extern "C" rocsparse_status NAME(rocsparse_handle          handle,           \
                                     rocsparse_direction       dir,              \
                                     rocsparse_int             mb,               \
                                     rocsparse_int             nnzb,             \
                                     const rocsparse_mat_descr descr,            \
                                     const T*                  bsr_val,          \
                                     const rocsparse_int*      bsr_row_ptr,      \
                                     const rocsparse_int*      bsr_col_ind,      \
                                     rocsparse_int             block_dim,        \
                                     rocsparse_mat_info        info,             \
                                     size_t*                   buffer_size)      \
    try                                                                          \
    {                                                                            \
        ROCSPARSE_ROUTINE_TRACE;                                                 \
        RETURN_IF_ROCSPARSE_ERROR(rocsparse::xbsrilu0_buffer_size(handle,        \
                                                                  dir,           \
                                                                  mb,            \
                                                                  nnzb,          \
                                                                  descr,         \
                                                                  bsr_val,       \
                                                                  bsr_row_ptr,   \
                                                                  bsr_col_ind,   \
                                                                  block_dim,     \
                                                                  info,          \
                                                                  buffer_size)); \
        return rocsparse_status_success;                                         \
    }                                                                            \
    catch(...)                                                                   \
    {                                                                            \
        RETURN_ROCSPARSE_EXCEPTION();                                            \
    }

CIMPL(rocsparse_sbsrilu0_buffer_size, float);
CIMPL(rocsparse_dbsrilu0_buffer_size, double);
CIMPL(rocsparse_cbsrilu0_buffer_size, rocsparse_float_complex);
CIMPL(rocsparse_zbsrilu0_buffer_size, rocsparse_double_complex);
#undef CIMPL
