/* ************************************************************************
 * Copyright (C) 2016-2024 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 cop-
 * ies 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 IM-
 * PLIED, 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 CONNE-
 * CTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * ************************************************************************ */

#include "handle.hpp"
#include "rocblas.h"

#include "int64_helpers.hpp"
#include "logging.hpp"
#include "rocblas_gemm_ex.hpp"
#include "utility.hpp"

namespace
{
    template <typename API_INT>
    rocblas_status rocblas_gemm_ex_impl(rocblas_handle    handle,
                                        rocblas_operation trans_a,
                                        rocblas_operation trans_b,
                                        API_INT           m,
                                        API_INT           n,
                                        API_INT           k,
                                        const void*       alpha,
                                        const void*       a,
                                        rocblas_datatype  a_type,
                                        API_INT           lda,
                                        const void*       b,
                                        rocblas_datatype  b_type,
                                        API_INT           ldb,
                                        const void*       beta,
                                        const void*       c,
                                        rocblas_datatype  c_type,
                                        API_INT           ldc,
                                        void*             d,
                                        rocblas_datatype  d_type,
                                        API_INT           ldd,
                                        rocblas_datatype  compute_type,
                                        rocblas_gemm_algo algo,
                                        int32_t           solution_index,
                                        uint32_t          flags)
    {
        if(!handle)
            return rocblas_status_invalid_handle;

        const bool HPA = compute_type == rocblas_datatype_f32_r
                         && (a_type == rocblas_datatype_f16_r || a_type == rocblas_datatype_bf16_r);

        if(!HPA)
            RETURN_ZERO_DEVICE_MEMORY_SIZE_IF_QUERIED(handle);

        // Copy alpha and beta to host if on device
        rocblas_union_t alpha_h, beta_h;
        RETURN_IF_ROCBLAS_ERROR(rocblas_copy_alpha_beta_to_host_if_on_device(
            handle, alpha, beta, alpha_h, beta_h, k, compute_type));
        auto   saved_pointer_mode = handle->push_pointer_mode(rocblas_pointer_mode_host);
        Logger logger;
        // If this is a solution fitness query (internal testing), bypass logging and error checks
        if(!handle->get_solution_fitness_query())
        {
            if(!handle->is_device_memory_size_query())
            {
                // Perform logging
                auto layer_mode = handle->layer_mode;
                if(layer_mode
                   & (rocblas_layer_mode_log_trace | rocblas_layer_mode_log_bench
                      | rocblas_layer_mode_log_profile))
                {
                    char trans_a_letter, trans_b_letter;
                    if(layer_mode & (rocblas_layer_mode_log_bench | rocblas_layer_mode_log_profile))
                    {
                        trans_a_letter = rocblas_transpose_letter(trans_a);
                        trans_b_letter = rocblas_transpose_letter(trans_b);
                    }
                    auto a_type_string       = rocblas_datatype_string(a_type);
                    auto b_type_string       = rocblas_datatype_string(b_type);
                    auto c_type_string       = rocblas_datatype_string(c_type);
                    auto d_type_string       = rocblas_datatype_string(d_type);
                    auto compute_type_string = rocblas_datatype_string(compute_type);

                    if(layer_mode & rocblas_layer_mode_log_trace)
                    {
                        rocblas_internal_ostream alphass, betass;
                        if(log_trace_alpha_beta_ex(compute_type, alpha, beta, alphass, betass)
                           == rocblas_status_success)
                        {
                            logger.log_trace(handle,
                                             ROCBLAS_API_STR(rocblas_gemm_ex),
                                             trans_a,
                                             trans_b,
                                             m,
                                             n,
                                             k,
                                             alphass.str(),
                                             a,
                                             a_type_string,
                                             lda,
                                             b,
                                             b_type_string,
                                             ldb,
                                             betass.str(),
                                             c,
                                             c_type_string,
                                             ldc,
                                             d,
                                             d_type_string,
                                             ldd,
                                             compute_type_string,
                                             algo,
                                             solution_index,
                                             rocblas_gemm_flags(flags));
                        }
                    }

                    if(layer_mode & rocblas_layer_mode_log_bench)
                    {
                        std::string alphas, betas;
                        if(log_bench_alpha_beta_ex(compute_type, alpha, beta, alphas, betas)
                           == rocblas_status_success)
                        {

                            logger.log_bench(handle,
                                             ROCBLAS_API_BENCH " -f gemm_ex",
                                             "--transposeA",
                                             trans_a_letter,
                                             "--transposeB",
                                             trans_b_letter,
                                             "-m",
                                             m,
                                             "-n",
                                             n,
                                             "-k",
                                             k,
                                             alphas,
                                             "--a_type",
                                             a_type_string,
                                             "--lda",
                                             lda,
                                             "--b_type",
                                             b_type_string,
                                             "--ldb",
                                             ldb,
                                             betas,
                                             "--c_type",
                                             c_type_string,
                                             "--ldc",
                                             ldc,
                                             "--d_type",
                                             d_type_string,
                                             "--ldd",
                                             ldd,
                                             "--compute_type",
                                             compute_type_string,
                                             "--algo",
                                             algo,
                                             "--solution_index",
                                             solution_index,
                                             "--flags",
                                             flags);
                        }
                    }

                    if(layer_mode & rocblas_layer_mode_log_profile)
                    {
                        logger.log_profile(handle,
                                           ROCBLAS_API_STR(rocblas_gemm_ex),
                                           "a_type",
                                           a_type_string,
                                           "b_type",
                                           b_type_string,
                                           "c_type",
                                           c_type_string,
                                           "d_type",
                                           d_type_string,
                                           "compute_type",
                                           compute_type_string,
                                           "transA",
                                           trans_a_letter,
                                           "transB",
                                           trans_b_letter,
                                           "M",
                                           m,
                                           "N",
                                           n,
                                           "K",
                                           k,
                                           "alpha",
                                           value_category(alpha, compute_type),
                                           "lda",
                                           lda,
                                           "ldb",
                                           ldb,
                                           "beta",
                                           value_category(beta, compute_type),
                                           "ldc",
                                           ldc,
                                           "ldd",
                                           ldd,
                                           "algo",
                                           algo,
                                           "solution_index",
                                           solution_index,
                                           "flags",
                                           rocblas_gemm_flags(flags));
                    }
                }
            }

            {
                auto validArgs = rocblas_gemm_ex_arg_check(handle,
                                                           trans_a,
                                                           trans_b,
                                                           m,
                                                           n,
                                                           k,
                                                           alpha,
                                                           a,
                                                           lda,
                                                           b,
                                                           ldb,
                                                           beta,
                                                           c,
                                                           c_type,
                                                           ldc,
                                                           d,
                                                           d_type,
                                                           ldd,
                                                           compute_type);

                if(validArgs != rocblas_status_continue)
                {
                    if(validArgs == rocblas_status_success)
                        RETURN_ZERO_DEVICE_MEMORY_SIZE_IF_QUERIED(handle);
                    return validArgs;
                }
            }
        }

        API_INT batch_count = 1;

        // TODO: These strides could be 0 ( {} ) instead of 1 ( {1} ) once Tensile is fixed
        rocblas_stride stride_a{1}, stride_b{1}, stride_c{1}, stride_d{1};

        return ROCBLAS_API(rocblas_gemm_ex_template)<false>(handle,
                                                            trans_a,
                                                            trans_b,
                                                            m,
                                                            n,
                                                            k,
                                                            alpha,
                                                            a,
                                                            a_type,
                                                            0,
                                                            lda,
                                                            stride_a,
                                                            b,
                                                            b_type,
                                                            0,
                                                            ldb,
                                                            stride_b,
                                                            beta,
                                                            c,
                                                            c_type,
                                                            0,
                                                            ldc,
                                                            stride_c,
                                                            d,
                                                            d_type,
                                                            0,
                                                            ldd,
                                                            stride_d,
                                                            batch_count,
                                                            compute_type,
                                                            algo,
                                                            solution_index,
                                                            flags);
    }
}
// namespace

#define INST_GEMM_EX_C_API(TI_)                                                   \
    extern "C" {                                                                  \
    rocblas_status ROCBLAS_API(rocblas_gemm_ex)(rocblas_handle    handle,         \
                                                rocblas_operation trans_a,        \
                                                rocblas_operation trans_b,        \
                                                TI_               m,              \
                                                TI_               n,              \
                                                TI_               k,              \
                                                const void*       alpha,          \
                                                const void*       a,              \
                                                rocblas_datatype  a_type,         \
                                                TI_               lda,            \
                                                const void*       b,              \
                                                rocblas_datatype  b_type,         \
                                                TI_               ldb,            \
                                                const void*       beta,           \
                                                const void*       c,              \
                                                rocblas_datatype  c_type,         \
                                                TI_               ldc,            \
                                                void*             d,              \
                                                rocblas_datatype  d_type,         \
                                                TI_               ldd,            \
                                                rocblas_datatype  compute_type,   \
                                                rocblas_gemm_algo algo,           \
                                                int32_t           solution_index, \
                                                uint32_t          flags)          \
    try                                                                           \
    {                                                                             \
        return rocblas_gemm_ex_impl(handle,                                       \
                                    trans_a,                                      \
                                    trans_b,                                      \
                                    m,                                            \
                                    n,                                            \
                                    k,                                            \
                                    alpha,                                        \
                                    a,                                            \
                                    a_type,                                       \
                                    lda,                                          \
                                    b,                                            \
                                    b_type,                                       \
                                    ldb,                                          \
                                    beta,                                         \
                                    c,                                            \
                                    c_type,                                       \
                                    ldc,                                          \
                                    d,                                            \
                                    d_type,                                       \
                                    ldd,                                          \
                                    compute_type,                                 \
                                    algo,                                         \
                                    solution_index,                               \
                                    flags);                                       \
    }                                                                             \
    catch(...)                                                                    \
    {                                                                             \
        return exception_to_rocblas_status();                                     \
    }                                                                             \
    }
