// SPDX-License-Identifier: MIT
// Copyright (c) 2018-2023, Advanced Micro Devices, Inc. All rights reserved.

#pragma once

#include <cstdlib>
#include <initializer_list>
#include <iostream>
#include <numeric>

#include "ck/ck.hpp"
#include "ck/tensor_operation/gpu/device/convolution_backward_data_specialization.hpp"
#include "ck/tensor_operation/gpu/device/tensor_layout.hpp"
#include "ck/tensor_operation/gpu/element/element_wise_operation.hpp"

#include "ck/library/reference_tensor_operation/cpu/reference_conv_bwd_data.hpp"
#include "ck/library/utility/algorithm.hpp"
#include "ck/library/utility/check_err.hpp"
#include "ck/library/utility/convolution_host_tensor_descriptor_helper.hpp"
#include "ck/library/utility/convolution_parameter.hpp"
#include "ck/library/utility/device_memory.hpp"
#include "ck/library/utility/host_tensor.hpp"
#include "ck/library/utility/host_tensor_generator.hpp"

template <ck::index_t... Is>
using S = ck::Sequence<Is...>;

using PassThrough = ck::tensor_operation::element_wise::PassThrough;

static inline constexpr ck::index_t NDimSpatial = 2;

static constexpr auto ConvBwdDataDefault =
    ck::tensor_operation::device::ConvolutionBackwardDataSpecialization::Default;

using FP16 = ck::half_t;
using FP32 = float;

struct ExecutionConfig final
{
    bool do_verification = true;
    int init_method      = 1;
    bool time_kernel     = true;
};

#define DefaultConvParams                                                                \
    ck::utils::conv::ConvParam                                                           \
    {                                                                                    \
        NDimSpatial, 32, 4, 192, 192, {3, 3}, {28, 28}, {1, 1}, {1, 1}, {1, 1}, { 1, 1 } \
    }

inline void print_help_msg()
{
    std::cerr << "arg1: verification (0=no, 1=yes)\n"
              << "arg2: initialization (0=no init, 1=integer value, 2=decimal value)\n"
              << "arg3: time kernel (0=no, 1=yes)\n"
              << ck::utils::conv::get_conv_param_parser_helper_msg() << std::endl;
}

inline bool parse_cmd_args(int argc,
                           char* argv[],
                           ExecutionConfig& config,
                           ck::utils::conv::ConvParam& conv_params)
{
    constexpr int num_execution_config_args =
        3; // arguments for do_verification, init_method, time_kernel
    constexpr int num_conv_param_leading_args = 5; // arguments for num_dim_spatial_, G_, N_, K_, C_

    constexpr int threshold_to_catch_partial_args = 1 + num_execution_config_args;
    constexpr int threshold_to_catch_all_args =
        threshold_to_catch_partial_args + num_conv_param_leading_args;

    if(argc == 1)
    {
        // use default
        config = ExecutionConfig{};
    }
    // catch only ExecutionConfig arguments
    else if(argc == threshold_to_catch_partial_args)
    {
        config.do_verification = std::stoi(argv[1]);
        config.init_method     = std::stoi(argv[2]);
        config.time_kernel     = std::stoi(argv[3]);
    }
    // catch both ExecutionConfig & ConvParam arguments
    else if(threshold_to_catch_all_args < argc && ((argc - threshold_to_catch_all_args) % 3 == 0))
    {
        config.do_verification = std::stoi(argv[1]);
        config.init_method     = std::stoi(argv[2]);
        config.time_kernel     = std::stoi(argv[3]);

        const ck::index_t num_dim_spatial = std::stoi(argv[4]);
        conv_params                       = ck::utils::conv::parse_conv_param(
            num_dim_spatial, threshold_to_catch_partial_args, argv);
    }
    else
    {
        print_help_msg();
        return false;
    }

    return true;
}
