// Copyright (c) 2019 Intel Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.


#include "contract_inst.h"

#include "primitive_gpu_base.h"
#include "implementation_map.h"
#include "kernel_selector_helper.h"
#include "error_handler.h"
#include "contract/contract_kernel_selector.h"
#include "contract/contract_kernel_base.h"

namespace cldnn {
    namespace gpu {

        namespace
        {
            inline kernel_selector::ContractMode convert_to_contract_mode(contract_mode mode)
            {
                switch (mode)
                {
                case contract_mode::sum:  return kernel_selector::ContractMode::SUM;
                case contract_mode::prod:  return kernel_selector::ContractMode::PRODUCT;
                case contract_mode::all:  return kernel_selector::ContractMode::ALL;
                case contract_mode::any: return kernel_selector::ContractMode::ANY;
                case contract_mode::max: return kernel_selector::ContractMode::MAX;

                default:
                    return kernel_selector::ContractMode::SUM;
                }
            }
        }

        struct contract_gpu : typed_primitive_gpu_impl<contract>
        {
            using parent = typed_primitive_gpu_impl<contract>;
            using parent::parent;


            static primitive_impl* create(const contract_node& arg)
            {
                auto c_params = get_default_params<kernel_selector::contract_params>(arg, 1);
                auto c_optional_params = get_default_optional_params<kernel_selector::contract_optional_params>(arg.get_program());

                c_params.reduction_axes = arg.get_primitive()->reduction_axes;
                c_params.mode = convert_to_contract_mode(arg.get_primitive()->mode);

                auto& kernel_selector = kernel_selector::contract_kernel_selector::Instance();
                auto best_kernels = kernel_selector.GetBestKernels(c_params, c_optional_params);

                CLDNN_ERROR_BOOL(arg.id(), "Best_kernel.empty()", best_kernels.empty(), "Cannot find a proper kernel with this arguments");

                return new contract_gpu(arg, best_kernels[0]);
            }
        };

        namespace {
            struct attach {
                attach() {
                    auto val_fw = contract_gpu::create;

                    implementation_map<contract>::add(std::make_tuple(engine_types::ocl, data_types::f32, format::bfyx), val_fw);
                    implementation_map<contract>::add(std::make_tuple(engine_types::ocl, data_types::f16, format::bfyx), val_fw);
                    implementation_map<contract>::add(std::make_tuple(engine_types::ocl, data_types::i8, format::bfyx), val_fw);
                    implementation_map<contract>::add(std::make_tuple(engine_types::ocl, data_types::u8, format::bfyx), val_fw);
                    implementation_map<contract>::add(std::make_tuple(engine_types::ocl, data_types::i32, format::bfyx), val_fw);
                    implementation_map<contract>::add(std::make_tuple(engine_types::ocl, data_types::i64, format::bfyx), val_fw);
                }
                ~attach() = default;
            };

            attach attach_impl;

        }
    }
}
