/* ************************************************************************
 * Copyright (c) 2019 Advanced Micro Devices, Inc.
 *
 * 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
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * ************************************************************************ */

#pragma once
#ifndef TESTING_CSR2COO_HPP
#define TESTING_CSR2COO_HPP

#include <rocsparse.hpp>

#include "gbyte.hpp"
#include "rocsparse_check.hpp"
#include "rocsparse_host.hpp"
#include "rocsparse_init.hpp"
#include "rocsparse_math.hpp"
#include "rocsparse_random.hpp"
#include "rocsparse_test.hpp"
#include "rocsparse_vector.hpp"
#include "utility.hpp"

template <typename T>
void testing_csr2coo_bad_arg(const Arguments& arg)
{
    static const size_t safe_size = 100;

    // Create rocsparse handle
    rocsparse_local_handle handle;

    // Allocate memory on device
    device_vector<rocsparse_int> dcsr_row_ptr(safe_size);
    device_vector<rocsparse_int> dcoo_row_ind(safe_size);

    if(!dcsr_row_ptr || !dcoo_row_ind)
    {
        CHECK_HIP_ERROR(hipErrorOutOfMemory);
        return;
    }

    // Test rocsparse_csr2coo()
    EXPECT_ROCSPARSE_STATUS(
        rocsparse_csr2coo(
            nullptr, dcsr_row_ptr, safe_size, safe_size, dcoo_row_ind, rocsparse_index_base_zero),
        rocsparse_status_invalid_handle);
    EXPECT_ROCSPARSE_STATUS(
        rocsparse_csr2coo(
            handle, nullptr, safe_size, safe_size, dcoo_row_ind, rocsparse_index_base_zero),
        rocsparse_status_invalid_pointer);
    EXPECT_ROCSPARSE_STATUS(
        rocsparse_csr2coo(
            handle, dcsr_row_ptr, safe_size, safe_size, nullptr, rocsparse_index_base_zero),
        rocsparse_status_invalid_pointer);
}

template <typename T>
void testing_csr2coo(const Arguments& arg)
{
    rocsparse_int         M         = arg.M;
    rocsparse_int         N         = arg.N;
    rocsparse_int         K         = arg.K;
    rocsparse_int         dim_x     = arg.dimx;
    rocsparse_int         dim_y     = arg.dimy;
    rocsparse_int         dim_z     = arg.dimz;
    rocsparse_index_base  base      = arg.baseA;
    rocsparse_matrix_init mat       = arg.matrix;
    bool                  full_rank = false;
    std::string           filename
        = arg.timing ? arg.filename : rocsparse_exepath() + "../matrices/" + arg.filename + ".csr";

    // Create rocsparse handle
    rocsparse_local_handle handle;

    // Argument sanity check before allocating invalid memory
    if(M <= 0 || N <= 0)
    {
        static const size_t safe_size = 100;

        // Allocate memory on device
        device_vector<rocsparse_int> dcsr_row_ptr(safe_size);
        device_vector<rocsparse_int> dcoo_row_ind(safe_size);

        if(!dcsr_row_ptr || !dcoo_row_ind)
        {
            CHECK_HIP_ERROR(hipErrorOutOfMemory);
            return;
        }

        EXPECT_ROCSPARSE_STATUS(rocsparse_csr2coo(handle, dcsr_row_ptr, 0, M, dcoo_row_ind, base),
                                (M < 0) ? rocsparse_status_invalid_size : rocsparse_status_success);

        return;
    }

    // Allocate host memory for CSR matrix
    host_vector<rocsparse_int> hcsr_row_ptr;
    host_vector<rocsparse_int> hcsr_col_ind;
    host_vector<T>             hcsr_val;

    rocsparse_seedrand();

    // Sample matrix
    rocsparse_int nnz;
    rocsparse_init_csr_matrix(hcsr_row_ptr,
                              hcsr_col_ind,
                              hcsr_val,
                              M,
                              N,
                              K,
                              dim_x,
                              dim_y,
                              dim_z,
                              nnz,
                              base,
                              mat,
                              filename.c_str(),
                              false,
                              full_rank);

    // Allocate host memory for COO matrix
    host_vector<rocsparse_int> hcoo_row_ind(nnz);
    host_vector<rocsparse_int> hcoo_row_ind_gold(nnz);

    // Allocate device memory
    device_vector<rocsparse_int> dcsr_row_ptr(M + 1);
    device_vector<rocsparse_int> dcoo_row_ind(nnz);

    if(!dcsr_row_ptr || !dcoo_row_ind)
    {
        CHECK_HIP_ERROR(hipErrorOutOfMemory);
        return;
    }

    // Copy data from CPU to device
    CHECK_HIP_ERROR(hipMemcpy(
        dcsr_row_ptr, hcsr_row_ptr, sizeof(rocsparse_int) * (M + 1), hipMemcpyHostToDevice));

    if(arg.unit_check)
    {
        CHECK_ROCSPARSE_ERROR(rocsparse_csr2coo(handle, dcsr_row_ptr, nnz, M, dcoo_row_ind, base));

        // Copy output to host
        CHECK_HIP_ERROR(hipMemcpy(
            hcoo_row_ind, dcoo_row_ind, sizeof(rocsparse_int) * nnz, hipMemcpyDeviceToHost));

        // CPU csr2coo
        host_csr_to_coo(M, nnz, hcsr_row_ptr, hcoo_row_ind_gold, base);

        unit_check_general<rocsparse_int>(1, nnz, 1, hcoo_row_ind_gold, hcoo_row_ind);
    }

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

        // Warm up
        for(int iter = 0; iter < number_cold_calls; ++iter)
        {
            CHECK_ROCSPARSE_ERROR(
                rocsparse_csr2coo(handle, dcsr_row_ptr, nnz, M, dcoo_row_ind, base));
        }

        double gpu_time_used = get_time_us();

        // Performance run
        for(int iter = 0; iter < number_hot_calls; ++iter)
        {
            CHECK_ROCSPARSE_ERROR(
                rocsparse_csr2coo(handle, dcsr_row_ptr, nnz, M, dcoo_row_ind, base));
        }

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

        double gpu_gbyte = csr2coo_gbyte_count<T>(M, nnz) / gpu_time_used * 1e6;

        std::cout.precision(2);
        std::cout.setf(std::ios::fixed);
        std::cout.setf(std::ios::left);

        std::cout << std::setw(12) << "M" << std::setw(12) << "N" << std::setw(12) << "nnz"
                  << std::setw(12) << "GB/s" << std::setw(12) << "msec" << std::setw(12) << "iter"
                  << std::setw(12) << "verified" << std::endl;

        std::cout << std::setw(12) << M << std::setw(12) << N << std::setw(12) << nnz
                  << std::setw(12) << gpu_gbyte << std::setw(12) << gpu_time_used / 1e3
                  << std::setw(12) << number_hot_calls << std::setw(12)
                  << (arg.unit_check ? "yes" : "no") << std::endl;
    }
}

#endif // TESTING_CSR2COO_HPP