/*
// Copyright (c) 2018-2020 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 "lstm_gemm_kernel_base.h"
#include "kernel_selector_utils.h"
#include "common_tools.h"

namespace kernel_selector {
JitConstants LSTMGemmKernelBase::GetJitConstants(const lstm_gemm_params& params) const {
    JitConstants jit = MakeBaseParamsJitConstants(params);
    const auto& weights = params.weights;
    const auto& recurrent = params.recurrent;
    const auto& hidden = params.hidden;
    const auto& bias = params.bias;
    if (params.hasBias) {
        jit.AddConstants({MakeJitConstant("BIAS", bias), MakeJitConstant("BIAS_TERM", true)});
    }
    if (params.hasHidden) {
        jit.AddConstants({MakeJitConstant("HIDDEN", hidden),
                          MakeJitConstant("HIDDEN_TERM", true),
                          MakeJitConstant("RECURRENT", recurrent),
                          MakeJitConstant("HIDDEN_DIRECTION", params.hidden_direction)});
    }
    jit.AddConstants({MakeJitConstant("WEIGHTS", weights)});
    jit.AddConstants({MakeJitConstant("DIRECTION", params.direction)});
    jit.AddConstants({MakeJitConstant("INPUT_DIRECTION", params.input_direction)});

    return jit;
}

KernelsData LSTMGemmKernelBase::GetCommonKernelsData(const Params& params, const optional_params& options) const {
    if (!Validate(params, options)) {
        return {};
    }

    const lstm_gemm_params& orgParams = static_cast<const lstm_gemm_params&>(params);

    KernelData kd = KernelData::Default<lstm_gemm_params>(params, orgParams.inputs.size());

    float efficiency = FORCE_PRIORITY_9;
    const auto& input = orgParams.inputs[0];

    auto newParams = orgParams;
    newParams.inputs.resize(1);
    newParams.inputs[0] = input;
    auto out = newParams.output;
    // TODO: reorder weights if needed
    auto& kernel = kd.kernels[0];
    auto cldnnJit = GetJitConstants(newParams);
    auto entryPoint = GetEntryPoint(kernelName, newParams.layerID, options);
    auto jit = CreateJit(kernelName, cldnnJit, entryPoint);

    kernel.workGroups.global = {out.X().v, out.Batch().v, 1};
    kernel.kernelString = GetKernelString(kernelName, jit, entryPoint, params.engineInfo);
    kernel.arguments.push_back({ArgumentDescriptor::Types::INPUT, 0});
    kernel.arguments.push_back({ArgumentDescriptor::Types::OUTPUT, 0});
    kernel.arguments.push_back({ArgumentDescriptor::Types::WEIGHTS, 0});
    if (orgParams.hasHidden) {
        kernel.arguments.push_back({ArgumentDescriptor::Types::HIDDEN, 0});
        kernel.arguments.push_back({ArgumentDescriptor::Types::RECURRENT, 0});
    }
    if (orgParams.hasBias) {
        kernel.arguments.push_back({ArgumentDescriptor::Types::BIAS, 0});
    }

    kd.estimatedTime = efficiency;

    return {kd};
}
}  // namespace kernel_selector