/* ************************************************************************
 * Copyright 2016-2021 Advanced Micro Devices, Inc.
 *
 * ************************************************************************ */

#include <stdio.h>
#include <stdlib.h>
#include <vector>

#include "testing_common.hpp"

using namespace std;

/* ============================================================================================ */

template <typename T>
hipblasStatus_t testing_rotmg_batched(const Arguments& arg)
{
    bool FORTRAN = arg.fortran;
    auto hipblasRotmgBatchedFn
        = FORTRAN ? hipblasRotmgBatched<T, true> : hipblasRotmgBatched<T, false>;

    int batch_count = arg.batch_count;

    T rel_error = std::numeric_limits<T>::epsilon() * 1000;

    // check to prevent undefined memory allocation error
    if(batch_count == 0)
    {
        return HIPBLAS_STATUS_SUCCESS;
    }
    else if(batch_count < 0)
    {
        return HIPBLAS_STATUS_INVALID_VALUE;
    }

    double gpu_time_used, hipblas_error_host, hipblas_error_device;

    hipblasLocalHandle handle(arg);

    // Initial Data on CPU
    // host data for hipBLAS host test
    host_batch_vector<T> hd1(1, 1, batch_count);
    host_batch_vector<T> hd2(1, 1, batch_count);
    host_batch_vector<T> hx1(1, 1, batch_count);
    host_batch_vector<T> hy1(1, 1, batch_count);
    host_batch_vector<T> hparams(5, 1, batch_count);

    // host data for CBLAS test
    host_batch_vector<T> cd1(1, 1, batch_count);
    host_batch_vector<T> cd2(1, 1, batch_count);
    host_batch_vector<T> cx1(1, 1, batch_count);
    host_batch_vector<T> cy1(1, 1, batch_count);
    host_batch_vector<T> cparams(5, 1, batch_count);

    // host data for hipBLAS device test
    host_batch_vector<T> hd1_d(1, 1, batch_count);
    host_batch_vector<T> hd2_d(1, 1, batch_count);
    host_batch_vector<T> hx1_d(1, 1, batch_count);
    host_batch_vector<T> hy1_d(1, 1, batch_count);
    host_batch_vector<T> hparams_d(5, 1, batch_count);

    // device data for hipBLAS device test
    device_batch_vector<T> dd1(1, 1, batch_count);
    device_batch_vector<T> dd2(1, 1, batch_count);
    device_batch_vector<T> dx1(1, 1, batch_count);
    device_batch_vector<T> dy1(1, 1, batch_count);
    device_batch_vector<T> dparams(5, 1, batch_count);

    hipblas_init(hd1, true);
    hipblas_init(hd2, false);
    hipblas_init(hx1, false);
    hipblas_init(hy1, false);
    hipblas_init(hparams, false);
    cd1.copy_from(hd1);
    cd2.copy_from(hd2);
    cx1.copy_from(hx1);
    cy1.copy_from(hy1);
    cparams.copy_from(hparams);
    hd1_d.copy_from(hd1);
    hd2_d.copy_from(hd2);
    hx1_d.copy_from(hx1);
    hy1_d.copy_from(hy1);
    hparams_d.copy_from(hparams);

    CHECK_HIP_ERROR(dd1.transfer_from(hd1));
    CHECK_HIP_ERROR(dd2.transfer_from(hd2));
    CHECK_HIP_ERROR(dx1.transfer_from(hx1));
    CHECK_HIP_ERROR(dy1.transfer_from(hy1));
    CHECK_HIP_ERROR(dparams.transfer_from(hparams));

    if(arg.unit_check || arg.norm_check)
    {
        CHECK_HIPBLAS_ERROR(hipblasSetPointerMode(handle, HIPBLAS_POINTER_MODE_HOST));
        CHECK_HIPBLAS_ERROR(
            hipblasRotmgBatchedFn(handle, hd1, hd2, hx1, hy1, hparams, batch_count));

        CHECK_HIPBLAS_ERROR(hipblasSetPointerMode(handle, HIPBLAS_POINTER_MODE_DEVICE));
        CHECK_HIPBLAS_ERROR(hipblasRotmgBatchedFn(handle,
                                                  dd1.ptr_on_device(),
                                                  dd2.ptr_on_device(),
                                                  dx1.ptr_on_device(),
                                                  dy1.ptr_on_device(),
                                                  dparams.ptr_on_device(),
                                                  batch_count));

        CHECK_HIP_ERROR(hd1_d.transfer_from(dd1));
        CHECK_HIP_ERROR(hd2_d.transfer_from(dd2));
        CHECK_HIP_ERROR(hx1_d.transfer_from(dx1));
        CHECK_HIP_ERROR(hy1_d.transfer_from(dy1));
        CHECK_HIP_ERROR(hparams_d.transfer_from(dparams));

        // CBLAS
        for(int b = 0; b < batch_count; b++)
        {
            cblas_rotmg<T>(cd1[b], cd2[b], cx1[b], cy1[b], cparams[b]);
        }

        if(arg.unit_check)
        {
            for(int b = 0; b < batch_count; b++)
            {
                near_check_general<T>(1, 1, 1, cd1[b], hd1[b], rel_error);
                near_check_general<T>(1, 1, 1, cd2[b], hd2[b], rel_error);
                near_check_general<T>(1, 1, 1, cx1[b], hx1[b], rel_error);
                near_check_general<T>(1, 1, 1, cy1[b], hy1[b], rel_error);
                near_check_general<T>(1, 5, 1, cparams[b], hparams[b], rel_error);

                near_check_general<T>(1, 1, 1, cd1[b], hd1_d[b], rel_error);
                near_check_general<T>(1, 1, 1, cd2[b], hd2_d[b], rel_error);
                near_check_general<T>(1, 1, 1, cx1[b], hx1_d[b], rel_error);
                near_check_general<T>(1, 1, 1, cy1[b], hy1_d[b], rel_error);
                near_check_general<T>(1, 5, 1, cparams[b], hparams_d[b], rel_error);
            }
        }

        if(arg.norm_check)
        {
            hipblas_error_host = norm_check_general<T>('F', 1, 1, 1, cd1, hd1, batch_count);
            hipblas_error_host += norm_check_general<T>('F', 1, 1, 1, cd2, hd2, batch_count);
            hipblas_error_host += norm_check_general<T>('F', 1, 1, 1, cx1, hx1, batch_count);
            hipblas_error_host += norm_check_general<T>('F', 1, 1, 1, cy1, hy1, batch_count);
            hipblas_error_host
                += norm_check_general<T>('F', 1, 5, 1, cparams, hparams, batch_count);

            hipblas_error_device = norm_check_general<T>('F', 1, 1, 1, cd1, hd1_d, batch_count);
            hipblas_error_device += norm_check_general<T>('F', 1, 1, 1, cd2, hd2_d, batch_count);
            hipblas_error_device += norm_check_general<T>('F', 1, 1, 1, cx1, hx1_d, batch_count);
            hipblas_error_device += norm_check_general<T>('F', 1, 1, 1, cy1, hy1_d, batch_count);
            hipblas_error_device
                += norm_check_general<T>('F', 1, 5, 1, cparams, hparams_d, batch_count);
        }
    }

    if(arg.timing)
    {
        hipStream_t stream;
        CHECK_HIPBLAS_ERROR(hipblasGetStream(handle, &stream));
        CHECK_HIPBLAS_ERROR(hipblasSetPointerMode(handle, HIPBLAS_POINTER_MODE_DEVICE));

        int runs = arg.cold_iters + arg.iters;
        for(int iter = 0; iter < runs; iter++)
        {
            if(iter == arg.cold_iters)
                gpu_time_used = get_time_us_sync(stream);

            CHECK_HIPBLAS_ERROR(hipblasRotmgBatchedFn(handle,
                                                      dd1.ptr_on_device(),
                                                      dd2.ptr_on_device(),
                                                      dx1.ptr_on_device(),
                                                      dy1.ptr_on_device(),
                                                      dparams.ptr_on_device(),
                                                      batch_count));
        }
        gpu_time_used = get_time_us_sync(stream) - gpu_time_used;

        ArgumentModel<e_batch_count>{}.log_args<T>(std::cout,
                                                   arg,
                                                   gpu_time_used,
                                                   ArgumentLogging::NA_value,
                                                   ArgumentLogging::NA_value,
                                                   hipblas_error_host,
                                                   hipblas_error_device);
    }
    return HIPBLAS_STATUS_SUCCESS;
}