/*! \file */
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#include "testing.hpp"

template <typename T>
void testing_gemvi_bad_arg(const Arguments& arg)
{
    static const size_t safe_size = 100;

    // Create rocsparse handle
    rocsparse_local_handle local_handle;

    T h_alpha = static_cast<T>(1);
    T h_beta  = static_cast<T>(1);

    rocsparse_handle     handle            = local_handle;
    rocsparse_operation  trans             = rocsparse_operation_none;
    rocsparse_index_base idx_base          = rocsparse_index_base_zero;
    rocsparse_int        m                 = safe_size;
    rocsparse_int        n                 = safe_size;
    rocsparse_int        nnz               = safe_size;
    const T*             alpha_device_host = &h_alpha;
    const T*             A                 = (const T*)0x4;
    rocsparse_int        lda               = safe_size;
    const rocsparse_int* x_ind             = (const rocsparse_int*)0x4;
    const T*             x_val             = (const T*)0x4;
    const T*             beta_device_host  = &h_beta;
    T*                   y                 = (T*)0x4;
    void*                buffer            = (void*)0x4;

    int       nargs_to_exclude   = 1;
    const int args_to_exclude[1] = {13};

#define PARAMS                                                                              \
    handle, trans, m, n, alpha_device_host, A, lda, nnz, x_val, x_ind, beta_device_host, y, \
        idx_base, buffer

    select_bad_arg_analysis(rocsparse_gemvi<T>, nargs_to_exclude, args_to_exclude, PARAMS);

    {
        auto tmp = trans;
        trans    = rocsparse_operation_transpose;
        EXPECT_ROCSPARSE_STATUS(rocsparse_gemvi<T>(PARAMS), rocsparse_status_not_implemented);
        trans = tmp;
    }

    // nnz cannot be larger than n
    {
        auto tmp = nnz;
        nnz      = n + 1;
        EXPECT_ROCSPARSE_STATUS(rocsparse_gemvi<T>(PARAMS), rocsparse_status_invalid_size);
        nnz = tmp;
    }

    // lda cannot be lesser than m in non transposed case
    {
        auto tmp = lda;
        lda      = m - 1;
        EXPECT_ROCSPARSE_STATUS(rocsparse_gemvi<T>(PARAMS), rocsparse_status_invalid_size);
        lda = tmp;
    }

    // lda cannot be lesser than n in transposed case
    {
        auto tmp1 = lda;
        auto tmp2 = trans;
        lda       = n - 1;
        trans     = rocsparse_operation_transpose;
        EXPECT_ROCSPARSE_STATUS(rocsparse_gemvi<T>(PARAMS), rocsparse_status_invalid_size);
        lda   = tmp1;
        trans = tmp2;
    }
}

template <typename T>
void testing_gemvi(const Arguments& arg)
{
    rocsparse_int        M     = arg.M;
    rocsparse_int        N     = arg.N;
    rocsparse_operation  trans = arg.transA;
    rocsparse_index_base base  = arg.baseA;

    T h_alpha = arg.get_alpha<T>();
    T h_beta  = arg.get_beta<T>();

    // Create rocsparse handle
    rocsparse_local_handle handle(arg);

    // Vector sparsity of 33%
    rocsparse_int nnz = N * 0.33;
    rocsparse_int lda = (trans == rocsparse_operation_none) ? M : N;

    // Allocate host memory
    host_vector<T>             hA(M * N);
    host_vector<T>             hx_val(nnz);
    host_vector<rocsparse_int> hx_ind(nnz);
    host_vector<T>             hy_1(M);
    host_vector<T>             hy_2(M);
    host_vector<T>             hy_gold(M);

    // Initialize data on CPU
    rocsparse_seedrand();
    rocsparse_init_index(hx_ind, nnz, base, N + base);
    rocsparse_init<T>(hx_val, 1, nnz, 1);
    rocsparse_init<T>(hy_1, 1, M, 1);
    rocsparse_init<T>(hA, M, N, lda, 1);
    hy_2    = hy_1;
    hy_gold = hy_1;

    // Allocate device memory
    device_vector<rocsparse_int> dx_ind(nnz);
    device_vector<T>             dx_val(nnz);
    device_vector<T>             dA(M * N);
    device_vector<T>             dy_1(M);
    device_vector<T>             dy_2(M);
    device_vector<T>             d_alpha(1);
    device_vector<T>             d_beta(1);

    // Copy data from CPU to device
    CHECK_HIP_ERROR(hipMemcpy(dx_ind, hx_ind, sizeof(rocsparse_int) * nnz, hipMemcpyHostToDevice));
    CHECK_HIP_ERROR(hipMemcpy(dx_val, hx_val, sizeof(T) * nnz, hipMemcpyHostToDevice));
    CHECK_HIP_ERROR(hipMemcpy(dA, hA, sizeof(T) * M * N, hipMemcpyHostToDevice));
    CHECK_HIP_ERROR(hipMemcpy(dy_1, hy_1, sizeof(T) * M, hipMemcpyHostToDevice));

    // Obtain buffer size
    size_t buffer_size;
    CHECK_ROCSPARSE_ERROR(rocsparse_gemvi_buffer_size<T>(handle, trans, M, N, nnz, &buffer_size));

    void* buffer;
    CHECK_HIP_ERROR(rocsparse_hipMalloc(&buffer, buffer_size));

    if(arg.unit_check)
    {
        // Copy data from CPU to device
        CHECK_HIP_ERROR(hipMemcpy(dy_2, hy_2, sizeof(T) * M, hipMemcpyHostToDevice));
        CHECK_HIP_ERROR(hipMemcpy(d_alpha, &h_alpha, sizeof(T), hipMemcpyHostToDevice));
        CHECK_HIP_ERROR(hipMemcpy(d_beta, &h_beta, sizeof(T), hipMemcpyHostToDevice));

        // Pointer mode host
        CHECK_ROCSPARSE_ERROR(rocsparse_set_pointer_mode(handle, rocsparse_pointer_mode_host));
        CHECK_ROCSPARSE_ERROR(testing::rocsparse_gemvi<T>(handle,
                                                          trans,
                                                          M,
                                                          N,
                                                          &h_alpha,
                                                          dA,
                                                          lda,
                                                          nnz,
                                                          dx_val,
                                                          dx_ind,
                                                          &h_beta,
                                                          dy_1,
                                                          base,
                                                          buffer));

        // Pointer mode device
        CHECK_ROCSPARSE_ERROR(rocsparse_set_pointer_mode(handle, rocsparse_pointer_mode_device));
        CHECK_ROCSPARSE_ERROR(testing::rocsparse_gemvi<T>(handle,
                                                          trans,
                                                          M,
                                                          N,
                                                          d_alpha,
                                                          dA,
                                                          lda,
                                                          nnz,
                                                          dx_val,
                                                          dx_ind,
                                                          d_beta,
                                                          dy_2,
                                                          base,
                                                          buffer));

        if(ROCSPARSE_REPRODUCIBILITY)
        {
            rocsparse_reproducibility::save(
                "Y pointer mode host", dy_1, "Y pointer mode device", dy_1);
        }
        // Copy output to host
        CHECK_HIP_ERROR(hipMemcpy(hy_1, dy_1, sizeof(T) * M, hipMemcpyDeviceToHost));
        CHECK_HIP_ERROR(hipMemcpy(hy_2, dy_2, sizeof(T) * M, hipMemcpyDeviceToHost));

        // CPU gemvi
        host_gemvi<rocsparse_int, T>(
            M, N, h_alpha, hA, lda, nnz, hx_val, hx_ind, h_beta, hy_gold, base);

        hy_gold.near_check(hy_1);
        hy_gold.near_check(hy_2);
    }

    if(arg.timing)
    {
        int number_cold_calls = 2;
        int number_hot_calls  = arg.iters;

        CHECK_ROCSPARSE_ERROR(rocsparse_set_pointer_mode(handle, rocsparse_pointer_mode_host));

        // Warm up
        for(int iter = 0; iter < number_cold_calls; ++iter)
        {
            CHECK_ROCSPARSE_ERROR(rocsparse_gemvi<T>(handle,
                                                     trans,
                                                     M,
                                                     N,
                                                     &h_alpha,
                                                     dA,
                                                     lda,
                                                     nnz,
                                                     dx_val,
                                                     dx_ind,
                                                     &h_beta,
                                                     dy_1,
                                                     base,
                                                     buffer));
        }

        double gpu_time_used = get_time_us();

        // Performance run
        for(int iter = 0; iter < number_hot_calls; ++iter)
        {
            CHECK_ROCSPARSE_ERROR(rocsparse_gemvi<T>(handle,
                                                     trans,
                                                     M,
                                                     N,
                                                     &h_alpha,
                                                     dA,
                                                     lda,
                                                     nnz,
                                                     dx_val,
                                                     dx_ind,
                                                     &h_beta,
                                                     dy_1,
                                                     base,
                                                     buffer));
        }

        gpu_time_used = (get_time_us() - gpu_time_used) / number_hot_calls;

        double gpu_gflops = gemvi_gflop_count(M, nnz) / gpu_time_used * 1e6;
        double gpu_gbyte  = gemvi_gbyte_count<T>((trans == rocsparse_operation_none) ? M : N,
                                                nnz,
                                                h_beta != static_cast<T>(0))
                           / gpu_time_used * 1e6;

        display_timing_info(display_key_t::M,
                            M,
                            display_key_t::N,
                            N,
                            display_key_t::nnz,
                            nnz,
                            display_key_t::trans,
                            rocsparse_operation2string(trans),
                            display_key_t::alpha,
                            h_alpha,
                            display_key_t::beta,
                            h_beta,
                            display_key_t::gflops,
                            gpu_gflops,
                            display_key_t::bandwidth,
                            gpu_gbyte,
                            display_key_t::time_ms,
                            get_gpu_time_msec(gpu_time_used));
    }

    CHECK_HIP_ERROR(rocsparse_hipFree(buffer));
}

#define INSTANTIATE(TYPE)                                            \
    template void testing_gemvi_bad_arg<TYPE>(const Arguments& arg); \
    template void testing_gemvi<TYPE>(const Arguments& arg)
INSTANTIATE(float);
INSTANTIATE(double);
INSTANTIATE(rocsparse_float_complex);
INSTANTIATE(rocsparse_double_complex);
void testing_gemvi_extra(const Arguments& arg) {}