/*! \file */
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#pragma once

#include "rocsparse.hpp"

#include "auto_testing_bad_arg.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"
#include <chrono>
#include <thread>

template <rocsparse_direction DIRA, typename T>
void testing_csx2dense_bad_arg(const Arguments& arg)
{

    rocsparse_local_handle           local_handle;
    rocsparse_local_mat_descr        local_descr;
    rocsparse_handle                 handle = local_handle;
    static constexpr rocsparse_int   m      = 1;
    static constexpr rocsparse_int   n      = 1;
    rocsparse_mat_descr              descr  = local_descr;
    static constexpr rocsparse_int   lda    = m;
    T*                               A      = (T*)0x4;
    host_dense_vector<rocsparse_int> hptr(2);
    hptr[0] = 0;
    hptr[1] = 1;
    device_dense_vector<rocsparse_int> dptr(hptr);
    switch(DIRA)
    {
    case rocsparse_direction_row:
    {

        const T*             csr_val     = (const T*)0x4;
        const rocsparse_int* csr_row_ptr = (const rocsparse_int*)dptr;
        const rocsparse_int* csr_col_ind = (const rocsparse_int*)0x4;

        bad_arg_analysis(
            rocsparse_csr2dense<T>, handle, m, n, descr, csr_val, csr_row_ptr, csr_col_ind, A, lda);
        EXPECT_ROCSPARSE_STATUS(
            rocsparse_csr2dense<T>(
                handle, m, n, descr, csr_val, csr_row_ptr, csr_col_ind, A, m - 1),
            rocsparse_status_invalid_size);
        break;
    }

    case rocsparse_direction_column:
    {
        const T*             csc_val     = (const T*)0x4;
        const rocsparse_int* csc_col_ptr = (const rocsparse_int*)dptr;
        const rocsparse_int* csc_row_ind = (const rocsparse_int*)0x4;

        bad_arg_analysis(
            rocsparse_csc2dense<T>, handle, m, n, descr, csc_val, csc_col_ptr, csc_row_ind, A, lda);
        EXPECT_ROCSPARSE_STATUS(
            rocsparse_csc2dense<T>(
                handle, m, n, descr, csc_val, csc_col_ptr, csc_row_ind, A, m - 1),
            rocsparse_status_invalid_size);
        break;
    }
    }
}

template <rocsparse_direction DIRA, typename T, typename FUNC1, typename FUNC2>
void testing_csx2dense(const Arguments& arg, FUNC1& csx2dense, FUNC2& dense2csx)

{
    rocsparse_int             M      = arg.M;
    rocsparse_int             N      = arg.N;
    rocsparse_int             LD     = arg.denseld;
    rocsparse_int             DIMDIR = (rocsparse_direction_row == DIRA) ? M : N;
    rocsparse_local_handle    handle(arg);
    rocsparse_local_mat_descr descr;
    CHECK_ROCSPARSE_ERROR(rocsparse_set_mat_index_base(descr, arg.baseA));

    //
    // Argument sanity check before allocating invalid memory
    //
    if(M == 0 || N == 0 || LD < M)
    {
        rocsparse_status expected_status = (((M == 0 && N >= 0) || (M >= 0 && N == 0)) && (LD >= M))
                                               ? rocsparse_status_success
                                               : rocsparse_status_invalid_size;

        EXPECT_ROCSPARSE_STATUS(
            csx2dense(handle, M, N, descr, nullptr, nullptr, nullptr, (T*)nullptr, LD),
            expected_status);
        return;
    }

    //
    // Allocate memory.
    //
    host_vector<T>   h_dense_val(LD * N);
    host_vector<T>   h_dense_val_ref(LD * N);
    device_vector<T> d_dense_val(LD * N);

    host_vector<rocsparse_int>   h_nnzPerRowColumn(DIMDIR);
    device_vector<rocsparse_int> d_nnzPerRowColumn(DIMDIR);
    if(!d_nnzPerRowColumn || !d_dense_val || !h_nnzPerRowColumn || !h_dense_val)
    {
        CHECK_HIP_ERROR(hipErrorOutOfMemory);
        return;
    }

    //
    // Initialize the dense matrix.
    //

    {
        //
        // Initialize the random generator.
        //
        rocsparse_seedrand();

        //
        // Initialize the entire allocated memory.
        //
        for(rocsparse_int j = 0; j < N; ++j)
        {
            for(rocsparse_int i = 0; i < LD; ++i)
            {
                h_dense_val_ref[j * LD + i] = -1;
            }
        }
        for(rocsparse_int j = 0; j < N; ++j)
        {
            for(rocsparse_int i = 0; i < LD; ++i)
            {
                h_dense_val[j * LD + i] = -2;
            }
        }

        //
        // Random initialization of the matrix.
        //
        for(rocsparse_int j = 0; j < N; ++j)
        {
            for(rocsparse_int i = 0; i < M; ++i)
            {
                h_dense_val_ref[j * LD + i] = random_cached_generator<T>(0, 4) == 0 ? 1 : 0;
            }
        }
    }

    //
    // Transfer.
    //
    CHECK_HIP_ERROR(
        hipMemcpy(d_dense_val, h_dense_val_ref, sizeof(T) * LD * N, hipMemcpyHostToDevice));

    rocsparse_int nnz;
    CHECK_ROCSPARSE_ERROR(rocsparse_set_pointer_mode(handle, rocsparse_pointer_mode_host));
    CHECK_ROCSPARSE_ERROR(
        rocsparse_nnz<T>(handle, DIRA, M, N, descr, d_dense_val, LD, d_nnzPerRowColumn, &nnz));

    //
    // Transfer.
    //
    CHECK_HIP_ERROR(hipMemcpy(h_nnzPerRowColumn,
                              d_nnzPerRowColumn,
                              sizeof(rocsparse_int) * DIMDIR,
                              hipMemcpyDeviceToHost));

    device_vector<rocsparse_int> d_csx_row_col_ptr(DIMDIR + 1);
    device_vector<T>             d_csx_val(std::max(nnz, static_cast<rocsparse_int>(1)));
    device_vector<rocsparse_int> d_csx_col_row_ind(std::max(nnz, static_cast<rocsparse_int>(1)));
    if(!d_csx_row_col_ptr || !d_csx_val || !d_csx_col_row_ind)
    {
        CHECK_HIP_ERROR(hipErrorOutOfMemory);
        return;
    }

    host_vector<rocsparse_int> cpu_csx_row_col_ptr(DIMDIR + 1);
    host_vector<T>             cpu_csx_val(std::max(nnz, static_cast<rocsparse_int>(1)));
    host_vector<rocsparse_int> cpu_csx_col_row_ind(std::max(nnz, static_cast<rocsparse_int>(1)));
    if(!cpu_csx_row_col_ptr || !cpu_csx_val || !cpu_csx_col_row_ind)
    {
        CHECK_HIP_ERROR(hipErrorOutOfMemory);
        return;
    }

    //
    // Convert the dense matrix to a compressed sparse matrix.
    //
    CHECK_ROCSPARSE_ERROR(dense2csx(handle,
                                    M,
                                    N,
                                    descr,
                                    d_dense_val,
                                    LD,
                                    d_nnzPerRowColumn,
                                    d_csx_val,
                                    d_csx_row_col_ptr,
                                    d_csx_col_row_ind));

    //
    // Copy on host.
    //
    CHECK_HIP_ERROR(hipMemcpy(cpu_csx_val,
                              d_csx_val,
                              sizeof(T) * std::max(nnz, static_cast<rocsparse_int>(1)),
                              hipMemcpyDeviceToHost));

    CHECK_HIP_ERROR(hipMemcpy(cpu_csx_row_col_ptr,
                              d_csx_row_col_ptr,
                              sizeof(rocsparse_int) * (DIMDIR + 1),
                              hipMemcpyDeviceToHost));

    CHECK_HIP_ERROR(hipMemcpy(cpu_csx_col_row_ind,
                              d_csx_col_row_ind,
                              sizeof(rocsparse_int) * std::max(nnz, static_cast<rocsparse_int>(1)),
                              hipMemcpyDeviceToHost));

    if(arg.unit_check)
    {
        CHECK_HIP_ERROR(
            hipMemcpy(d_dense_val, h_dense_val, sizeof(T) * LD * N, hipMemcpyHostToDevice));

        host_csx2dense<DIRA, T>(M,
                                N,
                                rocsparse_get_mat_index_base(descr),
                                rocsparse_order_column,
                                cpu_csx_val,
                                (const rocsparse_int*)cpu_csx_row_col_ptr,
                                (const rocsparse_int*)cpu_csx_col_row_ind,
                                (T*)h_dense_val,
                                LD);

        CHECK_ROCSPARSE_ERROR(csx2dense(handle,
                                        M,
                                        N,
                                        descr,
                                        (T*)d_csx_val,
                                        d_csx_row_col_ptr,
                                        d_csx_col_row_ind,
                                        (T*)d_dense_val,
                                        LD));

        if(ROCSPARSE_REPRODUCIBILITY)
        {
            rocsparse_reproducibility::save("d_dense_val", d_dense_val);
        }

        host_vector<T> temp(LD * N);
        temp.transfer_from(d_dense_val);

        unit_check_general(M, N, (T*)h_dense_val, LD, (T*)temp, LD);
        unit_check_general(M, N, (T*)h_dense_val, LD, (T*)h_dense_val_ref, LD);
    }

    if(arg.timing)
    {
        const double gpu_time_used = rocsparse_clients::run_benchmark(arg,
                                                                      csx2dense,
                                                                      handle,
                                                                      M,
                                                                      N,
                                                                      descr,
                                                                      d_csx_val,
                                                                      d_csx_row_col_ptr,
                                                                      d_csx_col_row_ind,
                                                                      (T*)d_dense_val,
                                                                      LD);

        double gbyte_count = csx2dense_gbyte_count<DIRA, T>(M, N, 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::LD,
                            LD,
                            display_key_t::nnz,
                            nnz,
                            display_key_t::bandwidth,
                            gpu_gbyte,
                            display_key_t::time_ms,
                            get_gpu_time_msec(gpu_time_used));
    }
}