/* ************************************************************************
 * Copyright (C) 2018-2019 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
 * copies 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
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
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 * ************************************************************************ */

#pragma once
#ifndef TESTING_GTHR_HPP
#define TESTING_GTHR_HPP

#include "display.hpp"
#include "flops.hpp"
#include "gbyte.hpp"
#include "hipsparse.hpp"
#include "hipsparse_arguments.hpp"
#include "hipsparse_test_unique_ptr.hpp"
#include "unit.hpp"
#include "utility.hpp"

#include <hipsparse.h>

using namespace hipsparse;
using namespace hipsparse_test;

template <typename T>
void testing_gthr_bad_arg(void)
{
    int nnz       = 100;
    int safe_size = 100;

    hipsparseIndexBase_t idx_base = HIPSPARSE_INDEX_BASE_ZERO;

    std::unique_ptr<handle_struct> unique_ptr_handle(new handle_struct);
    hipsparseHandle_t              handle = unique_ptr_handle->handle;

    auto dx_val_managed = hipsparse_unique_ptr{device_malloc(sizeof(T) * safe_size), device_free};
    auto dx_ind_managed = hipsparse_unique_ptr{device_malloc(sizeof(int) * safe_size), device_free};
    auto dy_managed     = hipsparse_unique_ptr{device_malloc(sizeof(T) * safe_size), device_free};

    T*   dx_val = (T*)dx_val_managed.get();
    int* dx_ind = (int*)dx_ind_managed.get();
    T*   dy     = (T*)dy_managed.get();

#if(!defined(CUDART_VERSION))
    verify_hipsparse_status_invalid_pointer(
        hipsparseXgthr(handle, nnz, dy, dx_val, (int*)nullptr, idx_base),
        "Error: x_ind is nullptr");
    verify_hipsparse_status_invalid_pointer(
        hipsparseXgthr(handle, nnz, dy, (T*)nullptr, dx_ind, idx_base), "Error: x_val is nullptr");
    verify_hipsparse_status_invalid_pointer(
        hipsparseXgthr(handle, nnz, (T*)nullptr, dx_val, dx_ind, idx_base), "Error: y is nullptr");
    verify_hipsparse_status_invalid_handle(
        hipsparseXgthr((hipsparseHandle_t) nullptr, nnz, dy, dx_val, dx_ind, idx_base));
#endif
}

template <typename T>
hipsparseStatus_t testing_gthr(Arguments argus)
{
#if(!defined(CUDART_VERSION) || CUDART_VERSION < 12000)
    int                  N        = argus.N;
    int                  nnz      = argus.nnz;
    hipsparseIndexBase_t idx_base = argus.baseA;

    std::unique_ptr<handle_struct> unique_ptr_handle(new handle_struct);
    hipsparseHandle_t              handle = unique_ptr_handle->handle;

    // Host structures
    std::vector<int> hx_ind(nnz);
    std::vector<T>   hx_val(nnz);
    std::vector<T>   hx_val_gold(nnz);
    std::vector<T>   hy(N);

    // Initial Data on CPU
    srand(12345ULL);
    hipsparseInitIndex(hx_ind.data(), nnz, 1, N);
    hipsparseInit<T>(hy, 1, N);

    // allocate memory on device
    auto dx_ind_managed = hipsparse_unique_ptr{device_malloc(sizeof(int) * nnz), device_free};
    auto dx_val_managed = hipsparse_unique_ptr{device_malloc(sizeof(T) * nnz), device_free};
    auto dy_managed     = hipsparse_unique_ptr{device_malloc(sizeof(T) * N), device_free};

    int* dx_ind = (int*)dx_ind_managed.get();
    T*   dx_val = (T*)dx_val_managed.get();
    T*   dy     = (T*)dy_managed.get();

    // copy data from CPU to device
    CHECK_HIP_ERROR(hipMemcpy(dx_ind, hx_ind.data(), sizeof(int) * nnz, hipMemcpyHostToDevice));
    CHECK_HIP_ERROR(hipMemcpy(dy, hy.data(), sizeof(T) * N, hipMemcpyHostToDevice));

    if(argus.unit_check)
    {
        // HIPSPARSE pointer mode host
        CHECK_HIPSPARSE_ERROR(hipsparseSetPointerMode(handle, HIPSPARSE_POINTER_MODE_HOST));
        CHECK_HIPSPARSE_ERROR(hipsparseXgthr(handle, nnz, dy, dx_val, dx_ind, idx_base));

        // copy output from device to CPU
        CHECK_HIP_ERROR(hipMemcpy(hx_val.data(), dx_val, sizeof(T) * nnz, hipMemcpyDeviceToHost));

        // CPU
        for(int i = 0; i < nnz; ++i)
        {
            hx_val_gold[i] = hy[hx_ind[i] - idx_base];
        }

        // enable unit check, notice unit check is not invasive, but norm check is,
        // unit check and norm check can not be interchanged their order
        unit_check_general(1, nnz, 1, hx_val_gold.data(), hx_val.data());
    }

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

        CHECK_HIPSPARSE_ERROR(hipsparseSetPointerMode(handle, HIPSPARSE_POINTER_MODE_HOST));

        // Warm up
        for(int iter = 0; iter < number_cold_calls; ++iter)
        {
            CHECK_HIPSPARSE_ERROR(hipsparseXgthr(handle, nnz, dy, dx_val, dx_ind, idx_base));
        }

        double gpu_time_used = get_time_us();

        // Performance run
        for(int iter = 0; iter < number_hot_calls; ++iter)
        {
            CHECK_HIPSPARSE_ERROR(hipsparseXgthr(handle, nnz, dy, dx_val, dx_ind, idx_base));
        }

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

        double gbyte_count = gthr_gbyte_count<T>(nnz);
        double gpu_gbyte   = get_gpu_gbyte(gpu_time_used, gbyte_count);

        display_timing_info(display_key_t::nnz,
                            nnz,
                            display_key_t::bandwidth,
                            gpu_gbyte,
                            display_key_t::time_ms,
                            get_gpu_time_msec(gpu_time_used));
    }
#endif

    return HIPSPARSE_STATUS_SUCCESS;
}

#endif // TESTING_GTHR_HPP
