/* ************************************************************************
 * Copyright (C) 2018-2025 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 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.
 *
 *
 * ************************************************************************ */

#pragma once

#include "testing_common.hpp"

template <typename T>
void testing_gbmv_bad_arg(const Arguments& arg)
{
    auto rocblas_gbmv_fn = arg.api & c_API_FORTRAN ? rocblas_gbmv<T, true> : rocblas_gbmv<T, false>;
    auto rocblas_gbmv_fn_64
        = arg.api & c_API_FORTRAN ? rocblas_gbmv_64<T, true> : rocblas_gbmv_64<T, false>;

    for(auto pointer_mode : {rocblas_pointer_mode_host, rocblas_pointer_mode_device})
    {
        rocblas_local_handle handle{arg};
        CHECK_ROCBLAS_ERROR(rocblas_set_pointer_mode(handle, pointer_mode));

        const rocblas_operation transA = rocblas_operation_none;
        const int64_t           M      = 100;
        const int64_t           N      = 100;
        const int64_t           KL     = 5;
        const int64_t           KU     = 5;
        const int64_t           lda    = 100;
        const int64_t           incx   = 1;
        const int64_t           incy   = 1;

        DEVICE_MEMCHECK(device_vector<T>, alpha_d, (1));
        DEVICE_MEMCHECK(device_vector<T>, beta_d, (1));
        DEVICE_MEMCHECK(device_vector<T>, one_d, (1));
        DEVICE_MEMCHECK(device_vector<T>, zero_d, (1));

        const T alpha_h(1), beta_h(2), one_h(1), zero_h(0);

        const T* alpha = &alpha_h;
        const T* beta  = &beta_h;
        const T* one   = &one_h;
        const T* zero  = &zero_h;

        if(pointer_mode == rocblas_pointer_mode_device)
        {
            CHECK_HIP_ERROR(hipMemcpy(alpha_d, alpha, sizeof(*alpha), hipMemcpyHostToDevice));
            alpha = alpha_d;
            CHECK_HIP_ERROR(hipMemcpy(beta_d, beta, sizeof(*beta), hipMemcpyHostToDevice));
            beta = beta_d;
            CHECK_HIP_ERROR(hipMemcpy(one_d, one, sizeof(*one), hipMemcpyHostToDevice));
            one = one_d;
            CHECK_HIP_ERROR(hipMemcpy(zero_d, zero, sizeof(*zero), hipMemcpyHostToDevice));
            zero = zero_d;
        }

        int64_t banded_matrix_row = KL + KU + 1;

        // Allocate device memory
        DEVICE_MEMCHECK(device_matrix<T>, dAb, (banded_matrix_row, N, lda));
        DEVICE_MEMCHECK(device_vector<T>, dx, (N, incx));
        DEVICE_MEMCHECK(device_vector<T>, dy, (M, incy));

        DAPI_EXPECT(rocblas_status_invalid_handle,
                    rocblas_gbmv_fn,
                    (nullptr, transA, M, N, KL, KU, alpha, dAb, lda, dx, incx, beta, dy, incy));

        DAPI_EXPECT(rocblas_status_invalid_value,
                    rocblas_gbmv_fn,
                    (handle,
                     (rocblas_operation)rocblas_fill_full,
                     M,
                     N,
                     KL,
                     KU,
                     alpha,
                     dAb,
                     lda,
                     dx,
                     incx,
                     beta,
                     dy,
                     incy));

        DAPI_EXPECT(rocblas_status_invalid_pointer,
                    rocblas_gbmv_fn,
                    (handle, transA, M, N, KL, KU, nullptr, dAb, lda, dx, incx, beta, dy, incy));

        DAPI_EXPECT(rocblas_status_invalid_pointer,
                    rocblas_gbmv_fn,
                    (handle, transA, M, N, KL, KU, alpha, dAb, lda, dx, incx, nullptr, dy, incy));

        if(pointer_mode == rocblas_pointer_mode_host)
        {
            DAPI_EXPECT(
                rocblas_status_invalid_pointer,
                rocblas_gbmv_fn,
                (handle, transA, M, N, KL, KU, alpha, nullptr, lda, dx, incx, beta, dy, incy));

            DAPI_EXPECT(
                rocblas_status_invalid_pointer,
                rocblas_gbmv_fn,
                (handle, transA, M, N, KL, KU, alpha, dAb, lda, nullptr, incx, beta, dy, incy));

            DAPI_EXPECT(
                rocblas_status_invalid_pointer,
                rocblas_gbmv_fn,
                (handle, transA, M, N, KL, KU, alpha, dAb, lda, dx, incx, beta, nullptr, incy));
        }

        // When M==0, alpha, A, x, beta, and y may be nullptr without error
        DAPI_CHECK(rocblas_gbmv_fn,
                   (handle,
                    transA,
                    0,
                    N,
                    KL,
                    KU,
                    nullptr,
                    nullptr,
                    lda,
                    nullptr,
                    incx,
                    nullptr,
                    nullptr,
                    incy));

        // When N==0, alpha, A, x, beta, and Y may be nullptr without error
        DAPI_CHECK(rocblas_gbmv_fn,
                   (handle,
                    transA,
                    M,
                    0,
                    KL,
                    KU,
                    nullptr,
                    nullptr,
                    lda,
                    nullptr,
                    incx,
                    nullptr,
                    nullptr,
                    incy));

        // When alpha==0, A and x may be nullptr without error
        DAPI_CHECK(
            rocblas_gbmv_fn,
            (handle, transA, M, N, KL, KU, zero, nullptr, lda, nullptr, incx, beta, dy, incy));

        // When alpha==0 && beta==1, A, x and y may be nullptr without error
        DAPI_CHECK(
            rocblas_gbmv_fn,
            (handle, transA, M, N, KL, KU, zero, nullptr, lda, nullptr, incx, one, nullptr, incy));

        if(arg.api & c_API_64)
        {
            int64_t n_large = 2147483649;
            DAPI_EXPECT(
                rocblas_status_invalid_size,
                rocblas_gbmv_fn,
                (handle, transA, M, n_large, KL, KU, alpha, dAb, lda, dx, incx, beta, dy, incy));
        }
    }
}

template <typename T>
void testing_gbmv(const Arguments& arg)
{
    auto rocblas_gbmv_fn = arg.api & c_API_FORTRAN ? rocblas_gbmv<T, true> : rocblas_gbmv<T, false>;
    auto rocblas_gbmv_fn_64
        = arg.api & c_API_FORTRAN ? rocblas_gbmv_64<T, true> : rocblas_gbmv_64<T, false>;

    int64_t           M                 = arg.M;
    int64_t           N                 = arg.N;
    int64_t           KL                = arg.KL;
    int64_t           KU                = arg.KU;
    int64_t           lda               = arg.lda;
    int64_t           incx              = arg.incx;
    int64_t           incy              = arg.incy;
    T                 h_alpha           = arg.get_alpha<T>();
    T                 h_beta            = arg.get_beta<T>();
    rocblas_operation transA            = char2rocblas_operation(arg.transA);
    int64_t           banded_matrix_row = KL + KU + 1;

    rocblas_local_handle handle{arg};

    // argument sanity check before allocating invalid memory
    bool invalid_size
        = M < 0 || N < 0 || lda < banded_matrix_row || !incx || !incy || KL < 0 || KU < 0;
    if(invalid_size || !M || !N)
    {
        DAPI_EXPECT(invalid_size ? rocblas_status_invalid_size : rocblas_status_success,
                    rocblas_gbmv_fn,
                    (handle,
                     transA,
                     M,
                     N,
                     KL,
                     KU,
                     nullptr,
                     nullptr,
                     lda,
                     nullptr,
                     incx,
                     nullptr,
                     nullptr,
                     incy));
        return;
    }

    size_t dim_x;
    size_t dim_y;

    if(transA == rocblas_operation_none)
    {
        dim_x = N;
        dim_y = M;
    }
    else
    {
        dim_x = M;
        dim_y = N;
    }

    // Naming: `h` is in CPU (host) memory(eg hAb), `d` is in GPU (device) memory (eg dAb).
    // Allocate host memory
    HOST_MEMCHECK(host_matrix<T>, hAb, (banded_matrix_row, N, lda));
    HOST_MEMCHECK(host_vector<T>, hx, (dim_x, incx));
    HOST_MEMCHECK(host_vector<T>, hy, (dim_y, incy));
    HOST_MEMCHECK(host_vector<T>, hy_gold, (dim_y, incy));
    HOST_MEMCHECK(host_vector<T>, halpha, (1));
    HOST_MEMCHECK(host_vector<T>, hbeta, (1));
    halpha[0] = h_alpha;
    hbeta[0]  = h_beta;

    // Allocate device memory
    DEVICE_MEMCHECK(device_matrix<T>, dAb, (banded_matrix_row, N, lda));
    DEVICE_MEMCHECK(device_vector<T>, dx, (dim_x, incx));
    DEVICE_MEMCHECK(device_vector<T>, dy, (dim_y, incy));
    DEVICE_MEMCHECK(device_vector<T>, d_alpha, (1));
    DEVICE_MEMCHECK(device_vector<T>, d_beta, (1));

    // Initialize data on host memory
    rocblas_init_matrix(
        hAb, arg, rocblas_client_alpha_sets_nan, rocblas_client_general_matrix, true);
    rocblas_init_vector(hx, arg, rocblas_client_alpha_sets_nan, false, true);
    rocblas_init_vector(hy, arg, rocblas_client_beta_sets_nan);

    // copy vector is easy in STL; hy_gold = hy: save a copy in hy_gold which will be output of
    // CPU BLAS
    hy_gold = hy;

    // copy data from CPU to device
    dAb.transfer_from(hAb);
    dx.transfer_from(hx);
    dy.transfer_from(hy);
    d_alpha.transfer_from(halpha);
    d_beta.transfer_from(hbeta);

    double cpu_time_used;
    double error_host = 0.0, error_device = 0.0;

    /* =====================================================================
           ROCBLAS
    =================================================================== */
    if(arg.unit_check || arg.norm_check)
    {
        if(arg.pointer_mode_host)
        {
            CHECK_ROCBLAS_ERROR(rocblas_set_pointer_mode(handle, rocblas_pointer_mode_host));
            handle.pre_test(arg);
            DAPI_CHECK(
                rocblas_gbmv_fn,
                (handle, transA, M, N, KL, KU, &h_alpha, dAb, lda, dx, incx, &h_beta, dy, incy));
            handle.post_test(arg);

            hy.transfer_from(dy);
        }

        if(arg.pointer_mode_device)
        {
            dy.transfer_from(hy_gold);

            CHECK_ROCBLAS_ERROR(rocblas_set_pointer_mode(handle, rocblas_pointer_mode_device));
            handle.pre_test(arg);
            DAPI_CHECK(
                rocblas_gbmv_fn,
                (handle, transA, M, N, KL, KU, d_alpha, dAb, lda, dx, incx, d_beta, dy, incy));
            handle.post_test(arg);

            if(arg.repeatability_check)
            {
                HOST_MEMCHECK(host_vector<T>, hy_copy, (dim_y, incy));
                // copy output from device to CPU
                hy.transfer_from(dy);

                // multi-GPU support
                int device_id, device_count;
                CHECK_HIP_ERROR(limit_device_count(device_count, (int)arg.devices));

                for(int dev_id = 0; dev_id < device_count; dev_id++)
                {
                    CHECK_HIP_ERROR(hipGetDevice(&device_id));
                    if(device_id != dev_id)
                        CHECK_HIP_ERROR(hipSetDevice(dev_id));

                    //New rocblas handle for new device
                    rocblas_local_handle handle_copy{arg};

                    // Allocate device memory
                    DEVICE_MEMCHECK(device_matrix<T>, dAb_copy, (banded_matrix_row, N, lda));
                    DEVICE_MEMCHECK(device_vector<T>, dx_copy, (dim_x, incx));
                    DEVICE_MEMCHECK(device_vector<T>, dy_copy, (dim_y, incy));
                    DEVICE_MEMCHECK(device_vector<T>, d_alpha_copy, (1));
                    DEVICE_MEMCHECK(device_vector<T>, d_beta_copy, (1));

                    dAb_copy.transfer_from(hAb);
                    dx_copy.transfer_from(hx);
                    d_alpha_copy.transfer_from(halpha);
                    d_beta_copy.transfer_from(hbeta);

                    CHECK_ROCBLAS_ERROR(
                        rocblas_set_pointer_mode(handle_copy, rocblas_pointer_mode_device));

                    for(int runs = 0; runs < arg.iters; runs++)
                    {
                        dy_copy.transfer_from(hy_gold);
                        DAPI_CHECK(rocblas_gbmv_fn,
                                   (handle_copy,
                                    transA,
                                    M,
                                    N,
                                    KL,
                                    KU,
                                    d_alpha_copy,
                                    dAb_copy,
                                    lda,
                                    dx_copy,
                                    incx,
                                    d_beta_copy,
                                    dy_copy,
                                    incy));
                        // copy output from device to CPU
                        hy_copy.transfer_from(dy_copy);
                        unit_check_general<T>(1, dim_y, incy, hy, hy_copy);
                    }
                }
                return;
            }
        }
        // CPU BLAS
        cpu_time_used = get_time_us_no_sync();
        ref_gbmv<T>(transA, M, N, KL, KU, h_alpha, hAb, lda, hx, incx, h_beta, hy_gold, incy);
        cpu_time_used = get_time_us_no_sync() - cpu_time_used;

        if(arg.pointer_mode_host)
        {
            if(arg.unit_check)
            {
                unit_check_general<T>(1, dim_y, incy, hy_gold, hy);
            }
            if(arg.norm_check)
            {
                error_host = norm_check_general<T>('F', 1, dim_y, incy, hy_gold, hy);
            }
        }
        if(arg.pointer_mode_device)
        {
            // copy output from device to CPU
            hy.transfer_from(dy);

            if(arg.unit_check)
            {
                unit_check_general<T>(1, dim_y, incy, hy_gold, hy);
            }
            if(arg.norm_check)
            {
                error_device = norm_check_general<T>('F', 1, dim_y, incy, hy_gold, hy);
            }
        }
    }

    if(arg.timing)
    {
        double gpu_time_used;
        int    number_cold_calls = arg.cold_iters;
        int    total_calls       = number_cold_calls + arg.iters;

        CHECK_ROCBLAS_ERROR(rocblas_set_pointer_mode(handle, rocblas_pointer_mode_host));

        hipStream_t stream;
        CHECK_ROCBLAS_ERROR(rocblas_get_stream(handle, &stream));

        for(int iter = 0; iter < total_calls; iter++)
        {
            if(iter == number_cold_calls)
                gpu_time_used = get_time_us_sync(stream); // in microseconds

            DAPI_DISPATCH(
                rocblas_gbmv_fn,
                (handle, transA, M, N, KL, KU, &h_alpha, dAb, lda, dx, incx, &h_beta, dy, incy));
        }

        gpu_time_used = get_time_us_sync(stream) - gpu_time_used;

        ArgumentModel<e_transA, e_M, e_N, e_KL, e_KU, e_alpha, e_lda, e_incx, e_beta, e_incy>{}
            .log_args<T>(rocblas_cout,
                         arg,
                         gpu_time_used,
                         gbmv_gflop_count<T>(transA, M, N, KL, KU),
                         gbmv_gbyte_count<T>(transA, M, N, KL, KU),
                         cpu_time_used,
                         error_host,
                         error_device);
    }
}
