"""effective_candidate_consumables：空请求时回退到目录或模型类名。"""

from __future__ import annotations

from pathlib import Path
from unittest.mock import MagicMock

import pytest
from openpyxl import Workbook

from app.config import Settings
from app.services.consumable_vision_algorithm import ConsumableVisionAlgorithmService


def test_effective_preserves_non_empty_request() -> None:
    svc = ConsumableVisionAlgorithmService(Settings())
    got = svc.effective_candidate_consumables([" 纱布 ", "缝线", "纱布"])
    assert got == ["纱布", "缝线"]


def test_effective_empty_uses_model_class_names(monkeypatch: pytest.MonkeyPatch) -> None:
    svc = ConsumableVisionAlgorithmService(Settings())
    mock_cls = MagicMock()
    mock_cls.names = {0: "ban", 1: "apple"}
    monkeypatch.setattr(svc, "_get_cls", lambda: mock_cls)
    assert svc.effective_candidate_consumables([]) == ["apple", "ban"]


def test_effective_empty_prefers_catalog_xlsx(tmp_path: Path) -> None:
    xlsx = tmp_path / "cat.xlsx"
    wb = Workbook()
    ws = wb.active
    ws.append(["产品编码", "商品名称"])
    ws.append(["C1", "商品乙"])
    ws.append(["C2", "商品甲"])
    wb.save(xlsx)

    settings = Settings(consumable_catalog_xlsx_path=str(xlsx))
    svc = ConsumableVisionAlgorithmService(settings)
    got = svc.effective_candidate_consumables([])
    assert got == ["商品乙", "商品甲"]


def test_effective_whitespace_only_treated_as_empty(
    monkeypatch: pytest.MonkeyPatch,
) -> None:
    svc = ConsumableVisionAlgorithmService(Settings())
    mock_cls = MagicMock()
    mock_cls.names = {0: "x"}
    monkeypatch.setattr(svc, "_get_cls", lambda: mock_cls)
    assert svc.effective_candidate_consumables(["", "  "]) == ["x"]