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

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

#include "testing_common.hpp"

using namespace std;

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

template <typename Tx, typename Ty = Tx, typename Tr = Ty, typename Tex = Tr, bool CONJ = false>
hipblasStatus_t testing_dot_strided_batched_ex_template(const Arguments& argus)
{
    bool FORTRAN = argus.fortran;
    auto hipblasDotStridedBatchedExFn
        = FORTRAN ? (CONJ ? hipblasDotcStridedBatchedExFortran : hipblasDotStridedBatchedExFortran)
                  : (CONJ ? hipblasDotcStridedBatchedEx : hipblasDotStridedBatchedEx);

    int    N            = argus.N;
    int    incx         = argus.incx;
    int    incy         = argus.incy;
    double stride_scale = argus.stride_scale;
    int    batch_count  = argus.batch_count;

    int           abs_incx = incx >= 0 ? incx : -incx;
    int           abs_incy = incy >= 0 ? incy : -incy;
    hipblasStride stridex  = size_t(N) * abs_incx * stride_scale;
    hipblasStride stridey  = size_t(N) * abs_incy * stride_scale;
    size_t        sizeX    = stridex * batch_count;
    size_t        sizeY    = stridey * batch_count;
    if(!sizeX)
        sizeX = 1;
    if(!sizeY)
        sizeY = 1;

    hipblasLocalHandle handle(argus);

    hipblasDatatype_t xType         = argus.a_type;
    hipblasDatatype_t yType         = argus.b_type;
    hipblasDatatype_t resultType    = argus.c_type;
    hipblasDatatype_t executionType = argus.compute_type;

    // argument sanity check, quick return if input parameters are invalid before allocating invalid
    // memory
    if(N <= 0 || batch_count <= 0)
    {
        device_vector<Tr> d_hipblas_result_0(std::max(batch_count, 1));
        host_vector<Tr>   h_hipblas_result_0(std::max(1, batch_count));
        hipblas_init_nan(h_hipblas_result_0.data(), std::max(1, batch_count));
        CHECK_HIP_ERROR(hipMemcpy(d_hipblas_result_0,
                                  h_hipblas_result_0,
                                  sizeof(Tr) * std::max(1, batch_count),
                                  hipMemcpyHostToDevice));

        CHECK_HIPBLAS_ERROR(hipblasSetPointerMode(handle, HIPBLAS_POINTER_MODE_DEVICE));
        CHECK_HIPBLAS_ERROR(hipblasDotStridedBatchedExFn(handle,
                                                         N,
                                                         nullptr,
                                                         xType,
                                                         incx,
                                                         stridex,
                                                         nullptr,
                                                         yType,
                                                         incy,
                                                         stridey,
                                                         batch_count,
                                                         d_hipblas_result_0,
                                                         resultType,
                                                         executionType));

        if(batch_count > 0)
        {
            host_vector<Tr> cpu_0(batch_count);
            host_vector<Tr> gpu_0(batch_count);
            CHECK_HIP_ERROR(hipMemcpy(
                gpu_0, d_hipblas_result_0, sizeof(Tr) * batch_count, hipMemcpyDeviceToHost));
            unit_check_general<Tr>(1, batch_count, 1, cpu_0, gpu_0);
        }
        return HIPBLAS_STATUS_SUCCESS;
    }

    // Naming: dX is in GPU (device) memory. hK is in CPU (host) memory, plz follow this practice
    host_vector<Tx> hx(sizeX);
    host_vector<Ty> hy(sizeY);
    host_vector<Tr> h_hipblas_result_host(batch_count);
    host_vector<Tr> h_hipblas_result_device(batch_count);
    host_vector<Tr> h_cpu_result(batch_count);

    device_vector<Tx> dx(sizeX);
    device_vector<Ty> dy(sizeY);
    device_vector<Tr> d_hipblas_result(batch_count);

    double gpu_time_used, hipblas_error_host, hipblas_error_device;

    // Initial Data on CPU
    srand(1);
    hipblas_init_alternating_sign<Tx>(hx, 1, N, abs_incx, stridex, batch_count);
    hipblas_init<Ty>(hy, 1, N, abs_incy, stridey, batch_count);

    // copy data from CPU to device, does not work for incx != 1
    CHECK_HIP_ERROR(hipMemcpy(dx, hx, sizeof(Tx) * sizeX, hipMemcpyHostToDevice));
    CHECK_HIP_ERROR(hipMemcpy(dy, hy, sizeof(Ty) * sizeY, hipMemcpyHostToDevice));

    if(argus.unit_check || argus.norm_check)
    {
        /* =====================================================================
            HIPBLAS
        =================================================================== */
        CHECK_HIPBLAS_ERROR(hipblasSetPointerMode(handle, HIPBLAS_POINTER_MODE_HOST));
        CHECK_HIPBLAS_ERROR(hipblasDotStridedBatchedExFn(handle,
                                                         N,
                                                         dx,
                                                         xType,
                                                         incx,
                                                         stridex,
                                                         dy,
                                                         yType,
                                                         incy,
                                                         stridey,
                                                         batch_count,
                                                         h_hipblas_result_host,
                                                         resultType,
                                                         executionType));

        CHECK_HIPBLAS_ERROR(hipblasSetPointerMode(handle, HIPBLAS_POINTER_MODE_DEVICE));
        CHECK_HIPBLAS_ERROR(hipblasDotStridedBatchedExFn(handle,
                                                         N,
                                                         dx,
                                                         xType,
                                                         incx,
                                                         stridex,
                                                         dy,
                                                         yType,
                                                         incy,
                                                         stridey,
                                                         batch_count,
                                                         d_hipblas_result,
                                                         resultType,
                                                         executionType));

        CHECK_HIP_ERROR(hipMemcpy(h_hipblas_result_device,
                                  d_hipblas_result,
                                  sizeof(Tr) * batch_count,
                                  hipMemcpyDeviceToHost));

        /* =====================================================================
                    CPU BLAS
        =================================================================== */
        for(int b = 0; b < batch_count; b++)
        {
            (CONJ ? cblas_dotc<Tx> : cblas_dot<Tx>)(N,
                                                    hx.data() + b * stridex,
                                                    incx,
                                                    hy.data() + b * stridey,
                                                    incy,
                                                    &h_cpu_result[b]);
        }

        if(argus.unit_check)
        {
            unit_check_general<Tr>(1, batch_count, 1, h_cpu_result, h_hipblas_result_host);
            unit_check_general<Tr>(1, batch_count, 1, h_cpu_result, h_hipblas_result_device);
        }
        if(argus.norm_check)
        {
            hipblas_error_host = norm_check_general<Tr>(
                'F', 1, batch_count, 1, h_cpu_result, h_hipblas_result_host);
            hipblas_error_device = norm_check_general<Tr>(
                'F', 1, batch_count, 1, h_cpu_result, h_hipblas_result_device);
        }

    } // end of if unit/norm check

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

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

            CHECK_HIPBLAS_ERROR(hipblasDotStridedBatchedExFn(handle,
                                                             N,
                                                             dx,
                                                             xType,
                                                             incx,
                                                             stridex,
                                                             dy,
                                                             yType,
                                                             incy,
                                                             stridey,
                                                             batch_count,
                                                             d_hipblas_result,
                                                             resultType,
                                                             executionType));
        }
        gpu_time_used = get_time_us_sync(stream) - gpu_time_used;

        ArgumentModel<e_N, e_incx, e_stride_x, e_incy, e_stride_y, e_batch_count>{}.log_args<Tx>(
            std::cout,
            argus,
            gpu_time_used,
            dot_gflop_count<CONJ, Tx>(N),
            dot_gbyte_count<Tx>(N),
            hipblas_error_host,
            hipblas_error_device);
    }

    return HIPBLAS_STATUS_SUCCESS;
}

hipblasStatus_t testing_dot_strided_batched_ex(Arguments argus)
{
    hipblasDatatype_t xType         = argus.a_type;
    hipblasDatatype_t yType         = argus.b_type;
    hipblasDatatype_t resultType    = argus.c_type;
    hipblasDatatype_t executionType = argus.compute_type;

    hipblasStatus_t status = HIPBLAS_STATUS_SUCCESS;

    if(xType == HIPBLAS_R_16F && yType == HIPBLAS_R_16F && resultType == HIPBLAS_R_16F
       && executionType == HIPBLAS_R_16F)
    {
        status = testing_dot_strided_batched_ex_template<hipblasHalf,
                                                         hipblasHalf,
                                                         hipblasHalf,
                                                         hipblasHalf,
                                                         false>(argus);
    }
    else if(xType == HIPBLAS_R_16F && yType == HIPBLAS_R_16F && resultType == HIPBLAS_R_16F
            && executionType == HIPBLAS_R_32F)
    {
        status = testing_dot_strided_batched_ex_template<hipblasHalf,
                                                         hipblasHalf,
                                                         hipblasHalf,
                                                         float,
                                                         false>(argus);
    }
    else if(xType == HIPBLAS_R_16B && yType == HIPBLAS_R_16B && resultType == HIPBLAS_R_16B
            && executionType == HIPBLAS_R_32F)
    {
        status = testing_dot_strided_batched_ex_template<hipblasBfloat16,
                                                         hipblasBfloat16,
                                                         hipblasBfloat16,
                                                         hipblasBfloat16,
                                                         false>(argus);
    }
    else if(xType == HIPBLAS_R_32F && yType == HIPBLAS_R_32F && resultType == HIPBLAS_R_32F
            && executionType == HIPBLAS_R_32F)
    {
        status = testing_dot_strided_batched_ex_template<float, float, float, float, false>(argus);
    }
    else if(xType == HIPBLAS_R_64F && yType == HIPBLAS_R_64F && resultType == HIPBLAS_R_64F
            && executionType == HIPBLAS_R_64F)
    {
        status
            = testing_dot_strided_batched_ex_template<double, double, double, double, false>(argus);
    }
    else if(xType == HIPBLAS_C_32F && yType == HIPBLAS_C_32F && resultType == HIPBLAS_C_32F
            && executionType == HIPBLAS_C_32F)
    {
        status = testing_dot_strided_batched_ex_template<hipblasComplex,
                                                         hipblasComplex,
                                                         hipblasComplex,
                                                         hipblasComplex,
                                                         false>(argus);
    }
    else if(xType == HIPBLAS_C_64F && yType == HIPBLAS_C_64F && resultType == HIPBLAS_C_64F
            && executionType == HIPBLAS_C_64F)
    {
        status = testing_dot_strided_batched_ex_template<hipblasDoubleComplex,
                                                         hipblasDoubleComplex,
                                                         hipblasDoubleComplex,
                                                         hipblasDoubleComplex,
                                                         false>(argus);
    }
    else
    {
        status = HIPBLAS_STATUS_NOT_SUPPORTED;
    }

    return status;
}

hipblasStatus_t testing_dotc_strided_batched_ex(Arguments argus)
{
    hipblasDatatype_t xType         = argus.a_type;
    hipblasDatatype_t yType         = argus.b_type;
    hipblasDatatype_t resultType    = argus.c_type;
    hipblasDatatype_t executionType = argus.compute_type;

    hipblasStatus_t status = HIPBLAS_STATUS_SUCCESS;

    if(xType == HIPBLAS_R_16F && yType == HIPBLAS_R_16F && resultType == HIPBLAS_R_16F
       && executionType == HIPBLAS_R_16F)
    {
        status = testing_dot_strided_batched_ex_template<hipblasHalf,
                                                         hipblasHalf,
                                                         hipblasHalf,
                                                         hipblasHalf,
                                                         true>(argus);
    }
    else if(xType == HIPBLAS_R_16F && yType == HIPBLAS_R_16F && resultType == HIPBLAS_R_16F
            && executionType == HIPBLAS_R_32F)
    {
        status = testing_dot_strided_batched_ex_template<hipblasHalf,
                                                         hipblasHalf,
                                                         hipblasHalf,
                                                         float,
                                                         true>(argus);
    }
    else if(xType == HIPBLAS_R_16B && yType == HIPBLAS_R_16B && resultType == HIPBLAS_R_16B
            && executionType == HIPBLAS_R_32F)
    {
        status = testing_dot_strided_batched_ex_template<hipblasBfloat16,
                                                         hipblasBfloat16,
                                                         hipblasBfloat16,
                                                         hipblasBfloat16,
                                                         true>(argus);
    }
    else if(xType == HIPBLAS_R_32F && yType == HIPBLAS_R_32F && resultType == HIPBLAS_R_32F
            && executionType == HIPBLAS_R_32F)
    {
        status = testing_dot_strided_batched_ex_template<float, float, float, float, true>(argus);
    }
    else if(xType == HIPBLAS_R_64F && yType == HIPBLAS_R_64F && resultType == HIPBLAS_R_64F
            && executionType == HIPBLAS_R_64F)
    {
        status
            = testing_dot_strided_batched_ex_template<double, double, double, double, true>(argus);
    }
    else if(xType == HIPBLAS_C_32F && yType == HIPBLAS_C_32F && resultType == HIPBLAS_C_32F
            && executionType == HIPBLAS_C_32F)
    {
        status = testing_dot_strided_batched_ex_template<hipblasComplex,
                                                         hipblasComplex,
                                                         hipblasComplex,
                                                         hipblasComplex,
                                                         true>(argus);
    }
    else if(xType == HIPBLAS_C_64F && yType == HIPBLAS_C_64F && resultType == HIPBLAS_C_64F
            && executionType == HIPBLAS_C_64F)
    {
        status = testing_dot_strided_batched_ex_template<hipblasDoubleComplex,
                                                         hipblasDoubleComplex,
                                                         hipblasDoubleComplex,
                                                         hipblasDoubleComplex,
                                                         true>(argus);
    }
    else
    {
        status = HIPBLAS_STATUS_NOT_SUPPORTED;
    }

    return status;
}