/* ************************************************************************
 * Copyright 2018-2021 Advanced Micro Devices, Inc.
 *
 * ************************************************************************ */

#pragma once

#include "bytes.hpp"
#include "cblas_interface.hpp"
#include "flops.hpp"
#include "near.hpp"
#include "norm.hpp"
#include "rocblas.hpp"
#include "rocblas_datatype2string.hpp"
#include "rocblas_init.hpp"
#include "rocblas_math.hpp"
#include "rocblas_random.hpp"
#include "rocblas_test.hpp"
#include "rocblas_vector.hpp"
#include "unit.hpp"
#include "utility.hpp"

template <typename T>
void testing_trmv_strided_batched_bad_arg(const Arguments& arg)
{
    auto rocblas_trmv_strided_batched_fn = arg.fortran ? rocblas_trmv_strided_batched<T, true>
                                                       : rocblas_trmv_strided_batched<T, false>;

    const rocblas_int       M           = 100;
    const rocblas_int       lda         = 100;
    const rocblas_int       incx        = 1;
    const rocblas_int       batch_count = 1;
    const rocblas_stride    stride_a    = M * lda;
    const rocblas_stride    stride_x    = M;
    const rocblas_operation transA      = rocblas_operation_none;
    const rocblas_fill      uplo        = rocblas_fill_lower;
    const rocblas_diagonal  diag        = rocblas_diagonal_non_unit;

    rocblas_local_handle handle{arg};

    size_t size_A = lda * size_t(M);

    host_strided_batch_vector<T> hA(size_A, 1, stride_a, batch_count);
    CHECK_DEVICE_ALLOCATION(hA.memcheck());

    host_strided_batch_vector<T> hx(M, incx, stride_x, batch_count);
    CHECK_DEVICE_ALLOCATION(hx.memcheck());

    device_strided_batch_vector<T> dA(size_A, 1, stride_a, batch_count);
    CHECK_DEVICE_ALLOCATION(dA.memcheck());

    device_strided_batch_vector<T> dx(M, incx, stride_x, batch_count);
    CHECK_DEVICE_ALLOCATION(dx.memcheck());

    //
    // Checks.
    //
    EXPECT_ROCBLAS_STATUS(
        rocblas_trmv_strided_batched_fn(
            handle, uplo, transA, diag, M, nullptr, lda, stride_a, dx, incx, stride_x, batch_count),
        rocblas_status_invalid_pointer);

    EXPECT_ROCBLAS_STATUS(
        rocblas_trmv_strided_batched_fn(
            handle, uplo, transA, diag, M, dA, lda, stride_a, nullptr, incx, stride_x, batch_count),
        rocblas_status_invalid_pointer);

    EXPECT_ROCBLAS_STATUS(
        rocblas_trmv_strided_batched_fn(
            nullptr, uplo, transA, diag, M, dA, lda, stride_a, dx, incx, stride_x, batch_count),
        rocblas_status_invalid_handle);
}

template <typename T>
void testing_trmv_strided_batched(const Arguments& arg)
{
    auto rocblas_trmv_strided_batched_fn = arg.fortran ? rocblas_trmv_strided_batched<T, true>
                                                       : rocblas_trmv_strided_batched<T, false>;

    rocblas_int    M = arg.M, lda = arg.lda, incx = arg.incx, batch_count = arg.batch_count;
    rocblas_stride stride_a = arg.stride_a, stride_x = arg.stride_x;

    char char_uplo = arg.uplo, char_transA = arg.transA, char_diag = arg.diag;

    rocblas_fill      uplo   = char2rocblas_fill(char_uplo);
    rocblas_operation transA = char2rocblas_operation(char_transA);
    rocblas_diagonal  diag   = char2rocblas_diagonal(char_diag);

    rocblas_local_handle handle{arg};

    // argument sanity check before allocating invalid memory
    bool invalid_size = M < 0 || lda < M || lda < 1 || !incx || batch_count < 0;
    if(invalid_size || !M || !batch_count)
    {
        EXPECT_ROCBLAS_STATUS(rocblas_trmv_strided_batched_fn(handle,
                                                              uplo,
                                                              transA,
                                                              diag,
                                                              M,
                                                              nullptr,
                                                              lda,
                                                              stride_a,
                                                              nullptr,
                                                              incx,
                                                              stride_x,
                                                              batch_count),
                              invalid_size ? rocblas_status_invalid_size : rocblas_status_success);

        return;
    }

    size_t size_A   = lda * size_t(M);
    size_t abs_incx = incx >= 0 ? incx : -incx;

    host_strided_batch_vector<T> hA(size_A, 1, stride_a, batch_count);
    CHECK_HIP_ERROR(hA.memcheck());

    host_strided_batch_vector<T> hx(M, incx, stride_x, batch_count);
    CHECK_HIP_ERROR(hx.memcheck());

    host_strided_batch_vector<T> hres(M, incx, stride_x, batch_count);
    CHECK_HIP_ERROR(hres.memcheck());

    device_strided_batch_vector<T> dA(size_A, 1, stride_a, batch_count);
    CHECK_DEVICE_ALLOCATION(dA.memcheck());

    device_strided_batch_vector<T> dx(M, incx, stride_x, batch_count);
    CHECK_DEVICE_ALLOCATION(dx.memcheck());

    // Initialize data on host memory
    rocblas_init_vector(hA, arg, rocblas_client_never_set_nan, true);
    rocblas_init_vector(hx, arg, rocblas_client_never_set_nan, false, true);

    //
    // Transfer.
    //
    CHECK_HIP_ERROR(dA.transfer_from(hA));
    CHECK_HIP_ERROR(dx.transfer_from(hx));

    double gpu_time_used, cpu_time_used, rocblas_error;

    /* =====================================================================
     ROCBLAS
     =================================================================== */
    if(arg.unit_check || arg.norm_check)
    {
        //
        // GPU BLAS
        //
        CHECK_ROCBLAS_ERROR(rocblas_trmv_strided_batched_fn(
            handle, uplo, transA, diag, M, dA, lda, stride_a, dx, incx, stride_x, batch_count));

        //
        // CPU BLAS
        //
        {
            cpu_time_used = get_time_us_no_sync();
            for(rocblas_int batch_index = 0; batch_index < batch_count; ++batch_index)
            {
                cblas_trmv<T>(uplo, transA, diag, M, hA[batch_index], lda, hx[batch_index], incx);
            }
            cpu_time_used = get_time_us_no_sync() - cpu_time_used;
        }

        // fetch GPU
        CHECK_HIP_ERROR(hres.transfer_from(dx));
        //
        // Unit check.
        //
        if(arg.unit_check)
        {
            unit_check_general<T>(1, M, abs_incx, stride_x, hx, hres, batch_count);
        }

        //
        // Norm check.
        //
        if(arg.norm_check)
        {
            rocblas_error
                = norm_check_general<T>('F', 1, M, abs_incx, stride_x, hx, hres, batch_count);
        }
    }

    if(arg.timing)
    {

        //
        // Warmup
        //
        {
            int number_cold_calls = arg.cold_iters;
            for(int iter = 0; iter < number_cold_calls; iter++)
            {
                rocblas_trmv_strided_batched_fn(handle,
                                                uplo,
                                                transA,
                                                diag,
                                                M,
                                                dA,
                                                lda,
                                                stride_a,
                                                dx,
                                                incx,
                                                stride_x,
                                                batch_count);
            }
        }

        //
        // Go !
        //
        {
            hipStream_t stream;
            CHECK_ROCBLAS_ERROR(rocblas_get_stream(handle, &stream));
            gpu_time_used        = get_time_us_sync(stream); // in microseconds
            int number_hot_calls = arg.iters;
            for(int iter = 0; iter < number_hot_calls; iter++)
            {
                rocblas_trmv_strided_batched_fn(handle,
                                                uplo,
                                                transA,
                                                diag,
                                                M,
                                                dA,
                                                lda,
                                                stride_a,
                                                dx,
                                                incx,
                                                stride_x,
                                                batch_count);
            }
            gpu_time_used = get_time_us_sync(stream) - gpu_time_used;
        }

        //
        // Log performance
        //
        ArgumentModel<e_uplo,
                      e_transA,
                      e_diag,
                      e_M,
                      e_lda,
                      e_stride_a,
                      e_incx,
                      e_stride_x,
                      e_batch_count>{}
            .log_args<T>(rocblas_cout,
                         arg,
                         gpu_time_used,
                         trmv_gflop_count<T>(M),
                         trmv_gbyte_count<T>(M),
                         cpu_time_used,
                         rocblas_error);
    }
}