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

#include <gtest/gtest.h>

#include <sstream>
#include <string>

#include "common_test_utils/ov_test_utils.hpp"
#include "layer_transformation.hpp"
#include "low_precision/network_helper.hpp"
#include "ov_lpt_models/common/dequantization_operations.hpp"
#include "ov_lpt_models/round.hpp"

namespace {
using namespace testing;
using namespace ov;
using namespace ov::pass;

class RoundTestValues {
public:
    ov::element::Type inputPrecision;
    ov::Shape inputShape;
    ov::builder::subgraph::DequantizationOperations actualDequantization;
    ov::builder::subgraph::DequantizationOperations referenceDequantization;
};

class RoundTransformation : public LayerTransformation, public testing::WithParamInterface<RoundTestValues> {
public:
    void SetUp() override {
        const auto testValues = this->GetParam();

        actualFunction =
            ov::builder::subgraph::RoundWithToleranceFunction::getOriginal(testValues.inputPrecision,
                                                                               testValues.inputShape,
                                                                               testValues.actualDequantization);
        const auto lastNode = actualFunction->get_output_op(0)->get_input_node_shared_ptr(0);
        const auto dequantization = ov::pass::low_precision::NetworkHelper::getDequantization(lastNode);
        const auto subtractConstant = dequantization.subtract->get_input_node_shared_ptr(1);
        const auto roundedConst =
            ov::pass::low_precision::NetworkHelper::round(subtractConstant, testValues.inputPrecision);

        if (roundedConst->get_element_type() == testValues.inputPrecision) {
            const auto replacement =
                std::make_shared<ov::op::TypeRelaxed<opset1::Subtract>>(dequantization.data, roundedConst);
            ov::pass::low_precision::NetworkHelper::copyInfo(dequantization.subtract, replacement);
            ov::pass::low_precision::NetworkHelper::setOutDataPrecisionForTypeRelaxed(
                replacement,
                dequantization.convert->get_element_type());
            replace_node(dequantization.subtract, replacement);
        }

        referenceFunction =
            ov::builder::subgraph::RoundWithToleranceFunction::getReference(testValues.inputPrecision,
                                                                                testValues.inputShape,
                                                                                testValues.referenceDequantization);
    }

    static std::string getTestCaseName(testing::TestParamInfo<RoundTestValues> obj) {
        const auto testValues = obj.param;

        std::ostringstream result;
        result << testValues.inputPrecision << "_" << testValues.actualDequantization << "_"
               << testValues.referenceDequantization;
        return result.str();
    }
};

std::vector<RoundTestValues> testValues = {
    {ov::element::u8,
     ov::Shape{1, 3, 16, 16},
     {{ov::element::f32}, {125.5f}, {0.1f}},
     {{}, {{126.f}, ov::element::f32}, {0.1f}}},
    {ov::element::u8,
     ov::Shape{1, 3, 16, 16},
     {{ov::element::f32}, {{128.3f, 64.5f, 31.7f}}, {{0.1f, 0.1f, 0.1f}}},
     {{}, {{128.f, 65.f, 32.f}, ov::element::f32}, {{0.1f, 0.1f, 0.1f}}}},
    {ov::element::i8,
     ov::Shape{1, 3, 16, 16},
     {{ov::element::f32}, {126.6f}, {0.1f}},
     {{}, {{127.f}, ov::element::f32}, {0.1f}}},
    {ov::element::i8,
     ov::Shape{1, 3, 16, 16},
     {{ov::element::f32}, {{126.5f, 32.25f, -127.5f}}, {{0.1f, 0.1f, 0.1f}}},
     {{}, {{127.f, 32.f, -128.f}, ov::element::f32}, {{0.1f, 0.1f, 0.1f}}}},
};

TEST_P(RoundTransformation, CompareFunctions) {
    actualFunction->validate_nodes_and_infer_types();
    auto res = compare_functions(actualFunction, referenceFunction, true, true);
    ASSERT_TRUE(res.first) << res.second;
}

INSTANTIATE_TEST_SUITE_P(LPT,
                         RoundTransformation,
                         ::testing::ValuesIn(testValues),
                         RoundTransformation::getTestCaseName);
}  // namespace
