from backend.app.text_validation import classify_text_block, normalize_text, validate_field_against_word


def test_normalize_text_collapses_whitespace_and_full_width_punctuation() -> None:
    raw = "  食品生产许可证编号：\nSC11133042404806  "

    assert normalize_text(raw) == "食品生产许可证编号:SC11133042404806"


def test_classify_text_block_marks_garbled_text() -> None:
    assert classify_text_block("����-��-��") == "empty_or_garbled"
    assert classify_text_block("   ") == "empty_or_garbled"
    assert classify_text_block("食品名称：天问礼品粽") == "candidate"


def test_validate_field_against_word_returns_excerpt_for_match() -> None:
    word_text = "电话：0573-86981666 食品生产许可证编号：SC11133042404806 产品标准代号：GB/T 46259"

    result = validate_field_against_word("食品生产许可证编号：SC11133042404806", word_text)

    assert result.status == "matched"
    assert result.reason == "normalized text found in Word content"
    assert "SC11133042404806" in (result.matched_excerpt or "")


def test_validate_field_against_word_rejects_missing_text() -> None:
    word_text = "产品标准代号：GB/T 46259"

    result = validate_field_against_word("食品生产许可证编号：SC11133042404806", word_text)

    assert result.status == "unmatched"
    assert result.matched_excerpt is None