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 * Copyright (C) 2018-2025 Advanced Micro Devices, Inc. All rights Reserved.
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 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
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#pragma once
#ifndef TESTING_CSR2COO_HPP
#define TESTING_CSR2COO_HPP

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

#include <algorithm>
#include <hipsparse.h>
#include <string>

using namespace hipsparse;
using namespace hipsparse_test;

template <typename T>
void testing_csr2coo_bad_arg(const Arguments& argus)
{
#if(!defined(CUDART_VERSION))
    int                  m         = 100;
    int                  nnz       = 100;
    int                  safe_size = 100;
    hipsparseIndexBase_t idx_base  = HIPSPARSE_INDEX_BASE_ZERO;

    hipsparseLocalHandle_t handle;

    auto csr_row_ptr_managed
        = hipsparse_unique_ptr{device_malloc(sizeof(int) * safe_size), device_free};
    auto coo_row_ind_managed
        = hipsparse_unique_ptr{device_malloc(sizeof(int) * safe_size), device_free};

    int* csr_row_ptr = (int*)csr_row_ptr_managed.get();
    int* coo_row_ind = (int*)coo_row_ind_managed.get();

    verify_hipsparse_status_invalid_pointer(
        hipsparseXcsr2coo(handle, (int*)nullptr, nnz, m, coo_row_ind, idx_base),
        "Error: csr_row_ptr is nullptr");
    verify_hipsparse_status_invalid_pointer(
        hipsparseXcsr2coo(handle, csr_row_ptr, nnz, m, (int*)nullptr, idx_base),
        "Error: coo_row_ind is nullptr");
    verify_hipsparse_status_invalid_handle(
        hipsparseXcsr2coo((hipsparseHandle_t) nullptr, csr_row_ptr, nnz, m, coo_row_ind, idx_base));
#endif
}

template <typename T>
void testing_csr2coo(Arguments argus)
{
    int                  m        = argus.M;
    int                  n        = argus.N;
    hipsparseIndexBase_t idx_base = argus.baseA;
    std::string          filename = argus.filename;

    hipsparseLocalHandle_t handle(argus);

    srand(12345ULL);

    // Host structures
    std::vector<int>   hcsr_row_ptr;
    std::vector<int>   hcsr_col_ind;
    std::vector<float> hcsr_val;

    // Read or construct CSR matrix
    int nnz = 0;
    CHECK_GENERATE_MATRIX_ERROR(
        generate_csr_matrix(filename, m, n, nnz, hcsr_row_ptr, hcsr_col_ind, hcsr_val, idx_base));

    // Allocate memory on the device
    auto dcsr_row_ptr_managed
        = hipsparse_unique_ptr{device_malloc(sizeof(int) * (m + 1)), device_free};
    auto dcoo_row_ind_managed = hipsparse_unique_ptr{device_malloc(sizeof(int) * nnz), device_free};

    int* dcsr_row_ptr = (int*)dcsr_row_ptr_managed.get();
    int* dcoo_row_ind = (int*)dcoo_row_ind_managed.get();

    // Copy data from host to device
    CHECK_HIP_ERROR(
        hipMemcpy(dcsr_row_ptr, hcsr_row_ptr.data(), sizeof(int) * (m + 1), hipMemcpyHostToDevice));

    if(argus.unit_check)
    {
        CHECK_HIPSPARSE_ERROR(
            testing::hipsparseXcsr2coo(handle, dcsr_row_ptr, nnz, m, dcoo_row_ind, idx_base));

        // Copy output from device to host
        std::vector<int> hcoo_row_ind(nnz);
        CHECK_HIP_ERROR(
            hipMemcpy(hcoo_row_ind.data(), dcoo_row_ind, sizeof(int) * nnz, hipMemcpyDeviceToHost));

        // CPU conversion to COO
        std::vector<int> hcoo_row_ind_gold(nnz);
        host_csr2coo(m, nnz, hcsr_row_ptr.data(), hcoo_row_ind_gold.data(), idx_base);

        // Unit check
        unit_check_general(1, nnz, 1, hcoo_row_ind_gold.data(), hcoo_row_ind.data());
    }

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

        // Warm up
        for(int iter = 0; iter < number_cold_calls; ++iter)
        {
            CHECK_HIPSPARSE_ERROR(
                testing::hipsparseXcsr2coo(handle, dcsr_row_ptr, nnz, m, dcoo_row_ind, idx_base));
        }

        double gpu_time_used = get_time_us();

        // Performance run
        for(int iter = 0; iter < number_hot_calls; ++iter)
        {
            CHECK_HIPSPARSE_ERROR(
                testing::hipsparseXcsr2coo(handle, dcsr_row_ptr, nnz, m, dcoo_row_ind, idx_base));
        }

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

        double gbyte_count = csr2coo_gbyte_count<T>(m, nnz);
        double gpu_gbyte   = get_gpu_gbyte(gpu_time_used, gbyte_count);

        display_timing_info(display_key_t::M,
                            m,
                            display_key_t::N,
                            n,
                            display_key_t::nnz,
                            nnz,
                            display_key_t::bandwidth,
                            gpu_gbyte,
                            display_key_t::time_ms,
                            get_gpu_time_msec(gpu_time_used));
    }
}

#endif // TESTING_CSR2COO_HPP
