#!/usr/bin/python3
# coding=utf-8

# ----------------------------------------------------------------------------------------------------------
# Copyright (c) 2026 Huawei Technologies Co., Ltd.
# This program is free software, you can redistribute it and/or modify it under the terms and conditions of
# CANN Open Software License Agreement Version 2.0 (the "License").
# Please refer to the License for details. You may not use this file except in compliance with the License.
# THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED,
# INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE.
# See LICENSE in the root of the software repository for the full text of the License.
# ----------------------------------------------------------------------------------------------------------

from __future__ import annotations

from typing import Iterable, List, Set

from .model import Suggestion


def dedupe_suggestions(items: Iterable[Suggestion]) -> List[Suggestion]:
    seen: Set[tuple[str, str, str, str]] = set()
    out: List[Suggestion] = []
    for item in items:
        key = (item.example, item.category, item.severity, item.message)
        if key in seen:
            continue
        seen.add(key)
        out.append(item)
    return out