/* ************************************************************************
 * Copyright (C) 2018-2025 Advanced Micro Devices, Inc. All rights Reserved.
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 * of this software and associated documentation files (the "Software"), to deal
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 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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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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 *
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 * 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.
 *
 * ************************************************************************ */

#pragma once
#ifndef TESTING_CSR2CSC_HPP
#define TESTING_CSR2CSC_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 <algorithm>
#include <hipsparse.h>
#include <string>

using namespace hipsparse;
using namespace hipsparse_test;

template <typename T>
void testing_csr2csc_bad_arg(const Arguments& argus)
{
#if(!defined(CUDART_VERSION))
    int m         = 100;
    int n         = 100;
    int nnz       = 100;
    int safe_size = 100;

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

    auto csr_row_ptr_managed
        = hipsparse_unique_ptr{device_malloc(sizeof(int) * safe_size), device_free};
    auto csr_col_ind_managed
        = hipsparse_unique_ptr{device_malloc(sizeof(int) * safe_size), device_free};
    auto csr_val_managed = hipsparse_unique_ptr{device_malloc(sizeof(T) * safe_size), device_free};
    auto csc_row_ind_managed
        = hipsparse_unique_ptr{device_malloc(sizeof(int) * safe_size), device_free};
    auto csc_col_ptr_managed
        = hipsparse_unique_ptr{device_malloc(sizeof(int) * safe_size), device_free};
    auto csc_val_managed = hipsparse_unique_ptr{device_malloc(sizeof(T) * safe_size), device_free};

    int* csr_row_ptr = (int*)csr_row_ptr_managed.get();
    int* csr_col_ind = (int*)csr_col_ind_managed.get();
    T*   csr_val     = (T*)csr_val_managed.get();
    int* csc_row_ind = (int*)csc_row_ind_managed.get();
    int* csc_col_ptr = (int*)csc_col_ptr_managed.get();
    T*   csc_val     = (T*)csc_val_managed.get();

    verify_hipsparse_status_invalid_pointer(hipsparseXcsr2csc(handle,
                                                              m,
                                                              n,
                                                              nnz,
                                                              csr_val,
                                                              (int*)nullptr,
                                                              csr_col_ind,
                                                              csc_val,
                                                              csc_row_ind,
                                                              csc_col_ptr,
                                                              HIPSPARSE_ACTION_NUMERIC,
                                                              HIPSPARSE_INDEX_BASE_ZERO),
                                            "Error: csr_row_ptr is nullptr");
    verify_hipsparse_status_invalid_pointer(hipsparseXcsr2csc(handle,
                                                              m,
                                                              n,
                                                              nnz,
                                                              csr_val,
                                                              csr_row_ptr,
                                                              (int*)nullptr,
                                                              csc_val,
                                                              csc_row_ind,
                                                              csc_col_ptr,
                                                              HIPSPARSE_ACTION_NUMERIC,
                                                              HIPSPARSE_INDEX_BASE_ZERO),
                                            "Error: csr_col_ind is nullptr");
    verify_hipsparse_status_invalid_pointer(hipsparseXcsr2csc(handle,
                                                              m,
                                                              n,
                                                              nnz,
                                                              (T*)nullptr,
                                                              csr_row_ptr,
                                                              csr_col_ind,
                                                              csc_val,
                                                              csc_row_ind,
                                                              csc_col_ptr,
                                                              HIPSPARSE_ACTION_NUMERIC,
                                                              HIPSPARSE_INDEX_BASE_ZERO),
                                            "Error: csr_val is nullptr");
    verify_hipsparse_status_invalid_pointer(hipsparseXcsr2csc(handle,
                                                              m,
                                                              n,
                                                              nnz,
                                                              csr_val,
                                                              csr_row_ptr,
                                                              csr_col_ind,
                                                              csc_val,
                                                              (int*)nullptr,
                                                              csc_col_ptr,
                                                              HIPSPARSE_ACTION_NUMERIC,
                                                              HIPSPARSE_INDEX_BASE_ZERO),
                                            "Error: csc_row_ind is nullptr");
    verify_hipsparse_status_invalid_pointer(hipsparseXcsr2csc(handle,
                                                              m,
                                                              n,
                                                              nnz,
                                                              csr_val,
                                                              csr_row_ptr,
                                                              csr_col_ind,
                                                              csc_val,
                                                              csc_row_ind,
                                                              (int*)nullptr,
                                                              HIPSPARSE_ACTION_NUMERIC,
                                                              HIPSPARSE_INDEX_BASE_ZERO),
                                            "Error: csc_col_ptr is nullptr");
    verify_hipsparse_status_invalid_pointer(hipsparseXcsr2csc(handle,
                                                              m,
                                                              n,
                                                              nnz,
                                                              csr_val,
                                                              csr_row_ptr,
                                                              csr_col_ind,
                                                              (T*)nullptr,
                                                              csc_row_ind,
                                                              csc_col_ptr,
                                                              HIPSPARSE_ACTION_NUMERIC,
                                                              HIPSPARSE_INDEX_BASE_ZERO),
                                            "Error: csc_val is nullptr");
    verify_hipsparse_status_invalid_handle(hipsparseXcsr2csc((hipsparseHandle_t) nullptr,
                                                             m,
                                                             n,
                                                             nnz,
                                                             csr_val,
                                                             csr_row_ptr,
                                                             csr_col_ind,
                                                             csc_val,
                                                             csc_row_ind,
                                                             csc_col_ptr,
                                                             HIPSPARSE_ACTION_NUMERIC,
                                                             HIPSPARSE_INDEX_BASE_ZERO));
#endif
}

template <typename T>
void testing_csr2csc(Arguments argus)
{
#if(!defined(CUDART_VERSION) || CUDART_VERSION < 11000)
    int                  m        = argus.M;
    int                  n        = argus.N;
    hipsparseIndexBase_t idx_base = argus.baseA;
    hipsparseAction_t    action   = argus.action;
    std::string          filename = argus.filename;

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

    srand(12345ULL);

    // Host structures
    std::vector<int> hcsr_row_ptr;
    std::vector<int> hcsr_col_ind;
    std::vector<T>   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 dcsr_col_ind_managed = hipsparse_unique_ptr{device_malloc(sizeof(int) * nnz), device_free};
    auto dcsr_val_managed     = hipsparse_unique_ptr{device_malloc(sizeof(T) * nnz), device_free};
    auto dcsc_row_ind_managed = hipsparse_unique_ptr{device_malloc(sizeof(int) * nnz), device_free};
    auto dcsc_col_ptr_managed
        = hipsparse_unique_ptr{device_malloc(sizeof(int) * (n + 1)), device_free};
    auto dcsc_val_managed = hipsparse_unique_ptr{device_malloc(sizeof(T) * nnz), device_free};

    int* dcsr_row_ptr = (int*)dcsr_row_ptr_managed.get();
    int* dcsr_col_ind = (int*)dcsr_col_ind_managed.get();
    T*   dcsr_val     = (T*)dcsr_val_managed.get();
    int* dcsc_row_ind = (int*)dcsc_row_ind_managed.get();
    int* dcsc_col_ptr = (int*)dcsc_col_ptr_managed.get();
    T*   dcsc_val     = (T*)dcsc_val_managed.get();

    // Reset CSC arrays
    CHECK_HIP_ERROR(hipMemset(dcsc_row_ind, 0, sizeof(int) * nnz));
    CHECK_HIP_ERROR(hipMemset(dcsc_col_ptr, 0, sizeof(int) * (n + 1)));
    CHECK_HIP_ERROR(hipMemset(dcsc_val, 0, sizeof(T) * nnz));

    // Copy data from host to device
    CHECK_HIP_ERROR(
        hipMemcpy(dcsr_row_ptr, hcsr_row_ptr.data(), sizeof(int) * (m + 1), hipMemcpyHostToDevice));
    CHECK_HIP_ERROR(
        hipMemcpy(dcsr_col_ind, hcsr_col_ind.data(), sizeof(int) * nnz, hipMemcpyHostToDevice));
    CHECK_HIP_ERROR(hipMemcpy(dcsr_val, hcsr_val.data(), sizeof(T) * nnz, hipMemcpyHostToDevice));

    if(argus.unit_check)
    {
        CHECK_HIPSPARSE_ERROR(hipsparseXcsr2csc(handle,
                                                m,
                                                n,
                                                nnz,
                                                dcsr_val,
                                                dcsr_row_ptr,
                                                dcsr_col_ind,
                                                dcsc_val,
                                                dcsc_row_ind,
                                                dcsc_col_ptr,
                                                action,
                                                idx_base));

        // Copy output from device to host
        std::vector<int> hcsc_row_ind(nnz);
        std::vector<int> hcsc_col_ptr(n + 1);
        std::vector<T>   hcsc_val(nnz);

        CHECK_HIP_ERROR(
            hipMemcpy(hcsc_row_ind.data(), dcsc_row_ind, sizeof(int) * nnz, hipMemcpyDeviceToHost));
        CHECK_HIP_ERROR(hipMemcpy(
            hcsc_col_ptr.data(), dcsc_col_ptr, sizeof(int) * (n + 1), hipMemcpyDeviceToHost));
        CHECK_HIP_ERROR(
            hipMemcpy(hcsc_val.data(), dcsc_val, sizeof(T) * nnz, hipMemcpyDeviceToHost));

        // Host csr2csc conversion
        std::vector<int> hcsc_row_ind_gold(nnz);
        std::vector<int> hcsc_col_ptr_gold(n + 1);
        std::vector<T>   hcsc_val_gold(nnz);

        host_csr2csc(m,
                     n,
                     nnz,
                     hcsr_row_ptr.data(),
                     hcsr_col_ind.data(),
                     hcsr_val.data(),
                     hcsc_col_ptr_gold.data(),
                     hcsc_row_ind_gold.data(),
                     hcsc_val_gold.data(),
                     idx_base);

        // Unit check
        unit_check_general(1, nnz, 1, hcsc_row_ind_gold.data(), hcsc_row_ind.data());
        unit_check_general(1, n + 1, 1, hcsc_col_ptr_gold.data(), hcsc_col_ptr.data());

        // If action == HIPSPARSE_ACTION_NUMERIC also check values
        if(action == HIPSPARSE_ACTION_NUMERIC)
        {
            unit_check_general(1, nnz, 1, hcsc_val_gold.data(), hcsc_val.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(hipsparseXcsr2csc(handle,
                                                    m,
                                                    n,
                                                    nnz,
                                                    dcsr_val,
                                                    dcsr_row_ptr,
                                                    dcsr_col_ind,
                                                    dcsc_val,
                                                    dcsc_row_ind,
                                                    dcsc_col_ptr,
                                                    action,
                                                    idx_base));
        }

        double gpu_time_used = get_time_us();

        // Performance run
        for(int iter = 0; iter < number_hot_calls; ++iter)
        {
            CHECK_HIPSPARSE_ERROR(hipsparseXcsr2csc(handle,
                                                    m,
                                                    n,
                                                    nnz,
                                                    dcsr_val,
                                                    dcsr_row_ptr,
                                                    dcsr_col_ind,
                                                    dcsc_val,
                                                    dcsc_row_ind,
                                                    dcsc_col_ptr,
                                                    action,
                                                    idx_base));
        }

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

        double gbyte_count = csr2csc_gbyte_count<T>(m, n, nnz, action);
        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::action,
                            hipsparse_action2string(action),
                            display_key_t::bandwidth,
                            gpu_gbyte,
                            display_key_t::time_ms,
                            get_gpu_time_msec(gpu_time_used));
    }
#endif
}

#endif // TESTING_CSR2CSC_HPP