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

#pragma once

#include "openvino/core/axis_set.hpp"
#include "openvino/op/util/index_reduction.hpp"

namespace ov {
namespace op {
namespace v3 {
/// \brief Returns embeddings for given indices
/// \ingroup ov_ops_cpp_api
class OPENVINO_API EmbeddingSegmentsSum : public Op {
public:
    OPENVINO_OP("EmbeddingSegmentsSum", "opset3", op::Op);
    /// \brief Constructs a EmbeddingSegmentsSum operation.
    EmbeddingSegmentsSum() = default;
    /// \brief Constructs a EmbeddingSegmentsSum operation.
    ///
    /// EmbeddingSegmentsSum constructs an output tensor by replacing every index in a
    /// given
    /// input tensor with a row (from the weights matrix) at that index
    ///
    /// \param 'emb_table' tensor containing the embedding lookup table of the module of
    /// shape [num_emb, emb_dim1, emb_dim2, ...] and  of type T
    /// \param 'indices' tensor of shape [num_indices] and of type T_IND. Required
    /// \param `segment_ids` tensor of shape `[num_indices]` and of type *T_IND* with
    /// indices
    /// into the output Tensor. Values should be sorted and can be repeated. Required.
    /// \param `num_segments` scalar of type *T_IND* indicating the number of segments.
    /// Required.
    /// \param 'default_index' scalar of type T_IND containing default index in
    /// embedding
    /// table to fill empty "bags". If not provided empty "bags"
    /// are filled with zeros. Optional.
    /// \param 'per_sample_weights' tensor of the same shape as indices and of type T.
    /// Each value in this tensor are multiplied with each
    /// value pooled from embedding table for each index. Optional.

    EmbeddingSegmentsSum(const Output<Node>& emb_table,
                         const Output<Node>& indices,
                         const Output<Node>& segment_ids,
                         const Output<Node>& num_segments,
                         const Output<Node>& default_index,
                         const Output<Node>& per_sample_weights);

    EmbeddingSegmentsSum(const Output<Node>& emb_table,
                         const Output<Node>& indices,
                         const Output<Node>& segment_ids,
                         const Output<Node>& num_segments,
                         const Output<Node>& default_index);

    EmbeddingSegmentsSum(const Output<Node>& emb_table,
                         const Output<Node>& indices,
                         const Output<Node>& segment_ids,
                         const Output<Node>& num_segments);

    void validate_and_infer_types() override;

    std::shared_ptr<Node> clone_with_new_inputs(const OutputVector& new_args) const override;

    bool visit_attributes(AttributeVisitor&) override {
        return true;
    }

private:
    static constexpr int EMB_TABLE = 0;
    static constexpr int INDICES = 1;
    static constexpr int SEGMENT_IDS = 2;
    static constexpr int NUM_SEGMENTS = 3;
    static constexpr int DEFAULT_INDEX = 4;
    static constexpr int PER_SAMPLE_WEIGHTS = 5;
};
}  // namespace v3
}  // namespace op
}  // namespace ov
