// Copyright (C) 2018-2026 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
//

#include "count_nonzero_kernel_ref.h"
#include "kernel_selector_utils.h"
#include <string>

namespace kernel_selector {
ParamsKey CountNonzeroKernelRef::GetSupportedKey() const {
    ParamsKey k;
    k.EnableInputDataType(Datatype::F16);
    k.EnableInputDataType(Datatype::F32);
    k.EnableInputDataType(Datatype::INT8);
    k.EnableInputDataType(Datatype::UINT8);
    k.EnableInputDataType(Datatype::INT32);
    k.EnableInputDataType(Datatype::UINT32);
    k.EnableInputDataType(Datatype::INT64);
    k.EnableOutputDataType(Datatype::F16);
    k.EnableOutputDataType(Datatype::F32);
    k.EnableOutputDataType(Datatype::UINT8);
    k.EnableOutputDataType(Datatype::INT8);
    k.EnableOutputDataType(Datatype::INT32);
    k.EnableOutputDataType(Datatype::UINT32);
    k.EnableOutputDataType(Datatype::INT64);
    k.EnableAllInputLayout();
    k.EnableAllOutputLayout();
    k.EnableTensorOffset();
    k.EnableTensorPitches();
    k.EnableBatching();
    k.EnableDifferentTypes();
    k.EnableDynamicShapesSupport();
    return k;
}

CountNonzeroKernelRef::DispatchData CountNonzeroKernelRef::SetDefault(const count_nonzero_params& params) const {
    DispatchData dispatchData;
    const auto& input = params.inputs[0];

    // Set 1 work group to avoid synchornization issue for summation of nonzero counting.
    dispatchData.dataSize = input.LogicalSize();
    size_t max_dim_size = (dispatchData.dataSize > params.engineInfo.maxWorkGroupSize) ?
                                    params.engineInfo.maxWorkGroupSize : dispatchData.dataSize;
    dispatchData.lws = dispatchData.gws = { max_dim_size, 1, 1};

    return dispatchData;
}

DeviceFeaturesKey CountNonzeroKernelRef::get_required_device_features_key(const Params& params) const {
    DeviceFeaturesKey k;
    k.requires_subgroups();
    k.requires_subgroup_reduce();

    return k;
}

void CountNonzeroKernelRef::GetUpdateDispatchDataFunc(KernelData& kd) const {
    kd.update_dispatch_data_func = [this](const Params& params, KernelData& kd) {
        const auto& prim_params = static_cast<const count_nonzero_params&>(params);
        auto dispatchData = SetDefault(prim_params);
        OPENVINO_ASSERT(kd.kernels.size() == 1, "[GPU] Invalid kernels size for update dispatch data func");
        kd.kernels[0].params.workGroups.global = dispatchData.gws;
        kd.kernels[0].params.workGroups.local = dispatchData.lws;
        kd.kernels[0].skip_execution = KernelData::SkipKernelExecution(prim_params);
    };
}

KernelsData CountNonzeroKernelRef::GetKernelsData(const Params& params) const {
    assert(params.GetType() == KernelType::COUNT_NONZERO);

    KernelData kd = KernelData::Default<count_nonzero_params>(params);
    count_nonzero_params& newParams = *static_cast<count_nonzero_params*>(kd.params.get());

    auto dispatchData = SetDefault(newParams);
    auto entry_point = GetEntryPoint(kernelName, newParams.layerID, params);
    auto cldnn_jit = MakeBaseParamsJitConstants(newParams);
    if (newParams.has_dynamic_tensors()) {
        const auto& input = newParams.inputs[0];
        DimensionAccessHelperJit dims(input);
        const std::string total_data_size = toVectorMulString({dims.x(), dims.y(), dims.z(), dims.w(), dims.f(), dims.b()});
        cldnn_jit.AddConstants({MakeJitConstant("DATA_SIZE", total_data_size)});
    } else {
        cldnn_jit.AddConstants({MakeJitConstant("DATA_SIZE", dispatchData.dataSize)});
    }
    auto jit = CreateJit(kernelName, cldnn_jit, entry_point);

    auto& kernel = kd.kernels[0];

    GetUpdateDispatchDataFunc(kd);

    // In case of count-nonzero, the output shape is static unconditionally,
    // so it should be checked as dynamic of the input shape
    FillCLKernelData(kernel,
                     dispatchData,
                     params.engineInfo,
                     kernelName,
                     jit,
                     entry_point,
                     "",
                     false,
                     false,
                     1,
                     GetFusedPrimitiveInputsCount(params),
                     1,
                     newParams.is_shape_agnostic);

    return {kd};
}

KernelsPriority CountNonzeroKernelRef::GetKernelsPriority(const Params& /*params*/) const {
    return DONT_USE_IF_HAVE_SOMETHING_ELSE;
}

bool CountNonzeroKernelRef::Validate(const Params& p) const {
    if (!KernelBaseOpenCL::Validate(p))
        DO_NOT_USE_THIS_KERNEL(p.layerID);

    const auto& rp = static_cast<const count_nonzero_params&>(p);

    return Tensor::SimpleLayout(rp.inputs[0].GetLayout());
}
}  // namespace kernel_selector
