"""Wave 1：信息脱敏模块单元测试（CS-C-12，纯函数无需 DB）。"""

from app.utils.data_masker import (
    mask_bank_card,
    mask_dict_fields,
    mask_id_card,
    mask_name,
    mask_phone,
    mask_text,
)


# ---------------------------------------------------------------------------
# 手机号
# ---------------------------------------------------------------------------

def test_mask_phone_standard():
    assert mask_phone("13812345678") == "138****5678"


def test_mask_phone_already_masked_passthrough():
    assert mask_phone("139****1001") == "139****1001"


def test_mask_phone_none_and_empty():
    assert mask_phone(None) is None
    assert mask_phone("") == ""


def test_mask_phone_invalid_format_untouched():
    assert mask_phone("12345") == "12345"  # 非 11 位手机号不强行处理


# ---------------------------------------------------------------------------
# 身份证
# ---------------------------------------------------------------------------

def test_mask_id_card_18_digits():
    assert mask_id_card("110101199003071234") == "110***********1234"


def test_mask_id_card_18_with_tail_x():
    assert mask_id_card("11010119900307123X") == "110***********123X"
    assert mask_id_card("11010119900307123x") == "110***********123X"  # 小写 x 归一


def test_mask_id_card_15_digits_legacy():
    # 15 位老证：前 3 + 8 个 * + 后 4
    assert mask_id_card("110101900307123") == "110********7123"


def test_mask_id_card_already_masked_passthrough():
    assert mask_id_card("310101199903XXXXXX") == "310101199903XXXXXX"


# ---------------------------------------------------------------------------
# 姓名（只保留姓）
# ---------------------------------------------------------------------------

def test_mask_name_two_chars():
    assert mask_name("张三") == "张*"
    assert mask_name("李四") == "李*"


def test_mask_name_three_chars():
    assert mask_name("张明明") == "张**"


def test_mask_name_four_or_more():
    assert mask_name("欧阳修先生") == "欧****"


def test_mask_name_already_masked_passthrough():
    assert mask_name("客户·王**") == "客户·王**"
    assert mask_name("陈**兰") == "陈**兰"


def test_mask_name_none_and_single():
    assert mask_name(None) is None
    assert mask_name("张") == "张"


# ---------------------------------------------------------------------------
# 银行卡
# ---------------------------------------------------------------------------

def test_mask_bank_card_continuous():
    assert mask_bank_card("6222021234567890") == "************7890"


def test_mask_bank_card_with_spaces():
    assert mask_bank_card("6222 0212 3456 7890") == "**** **** **** 7890"


def test_mask_bank_card_with_hyphens():
    assert mask_bank_card("6222-0212-3456-7890") == "****-****-****-7890"


def test_mask_bank_card_too_short_untouched():
    assert mask_bank_card("12345") == "12345"


# ---------------------------------------------------------------------------
# 自由文本兜底扫描
# ---------------------------------------------------------------------------

def test_mask_text_mixed_pii():
    text = "我的手机13812345678，身份证110101199003071234，卡号6222021234567890"
    out = mask_text(text)
    assert "138****5678" in out
    assert "110***********1234" in out
    assert "************7890" in out


def test_mask_text_spaced_bank_card():
    out = mask_text("收款卡号 6222 0212 3456 7890 请查收")
    assert "**** **** **** 7890" in out


def test_mask_text_legacy_id_card():
    out = mask_text("老证号 110101900307123 已登记")
    assert "110********7123" in out


def test_mask_text_no_pii_untouched():
    text = "今天想了解一下货币基金的赎回规则"
    assert mask_text(text) == text


def test_mask_text_amount_and_date_not_falsely_masked():
    # 金额（小数点分隔）与日期不应被当作卡号/身份证
    assert mask_text("金额520000.00元") == "金额520000.00元"
    assert mask_text("到期日2026-09-08") == "到期日2026-09-08"


def test_mask_text_phone_not_cut_from_card():
    # 16 位卡号中即便包含 1[3-9] 开头的片段，也不应被手机号规则误切
    out = mask_text("6222138123456789")
    assert out == "************6789"


# ---------------------------------------------------------------------------
# 结构化数据批量脱敏
# ---------------------------------------------------------------------------

def test_mask_dict_fields_single_row():
    row = {
        "customer_id": "CUST-1001",
        "display_name": "李四",
        "phone_mask": "139****1001",       # 库中已脱敏 → 放行
        "payer_name": "王五",
        "amount": 5000.00,                  # 非字符串原样保留
    }
    out = mask_dict_fields(row)
    assert out["display_name"] == "李*"
    assert out["phone_mask"] == "139****1001"
    assert out["payer_name"] == "王*"
    assert out["amount"] == 5000.00
    assert out["customer_id"] == "CUST-1001"
    # 不入参修改
    assert row["display_name"] == "李四"


def test_mask_dict_fields_list_of_rows():
    rows = [
        {"product_name": "现金宝货币", "counterparty_name": "张三"},
        {"product_name": "稳健债基", "counterparty_name": "李四"},
    ]
    out = mask_dict_fields(rows)
    assert out[0]["counterparty_name"] == "张*"
    assert out[1]["counterparty_name"] == "李*"
    assert out[0]["product_name"] == "现金宝货币"


def test_mask_dict_fields_custom_mapping():
    row = {"contact_mobile": "13812345678", "remark": "ok"}
    out = mask_dict_fields(row, {"contact_mobile": "phone"})
    assert out["contact_mobile"] == "138****5678"
    assert out["remark"] == "ok"