"""Log redaction (NFR-SEC-03, 架构文档 §11.2).

日志中禁止出现手机号、UnionID、令牌、图片地址与诊断结论。
"""

from __future__ import annotations

from packages.shared.logging import REDACTED, make_redaction_processor


def redact(event: dict[str, object], extra: tuple[str, ...] = ()) -> dict[str, object]:
    return dict(make_redaction_processor(extra)(None, "info", dict(event)))


def test_sensitive_top_level_keys_are_masked() -> None:
    out = redact(
        {
            "event": "login",
            "phone": "13800138000",
            "union_id": "u-123",
            "access_token": "abc.def.ghi",
            "avatar_key": "user/1/avatar.png",
            "user_id": 42,
        }
    )
    assert out["phone"] == REDACTED
    assert out["union_id"] == REDACTED
    assert out["access_token"] == REDACTED
    assert out["avatar_key"] == REDACTED
    assert out["user_id"] == 42  # internal id is not sensitive on its own


def test_nested_structures_are_redacted() -> None:
    out = redact({"event": "x", "payload": {"inner": {"phone": "13800138000", "ok": 1}}})
    payload = out["payload"]
    assert isinstance(payload, dict)
    assert payload["inner"]["phone"] == REDACTED
    assert payload["inner"]["ok"] == 1


def test_phone_numbers_inside_free_text_are_masked() -> None:
    out = redact({"event": "sms", "detail": "验证码已发送至 13800138000"})
    assert "13800138000" not in str(out["detail"])
    assert "138****8000" in str(out["detail"])


def test_api_keys_in_free_text_are_masked() -> None:
    # Never put a real key in a fixture, not even to prove it gets redacted:
    # the test file itself would then carry the secret into git history.
    fake_key = "sk-" + "0f1e2d3c4b5a69788796a5b4c3d2e1f0"
    out = redact({"event": "cfg", "detail": f"using {fake_key}"})
    assert fake_key not in str(out["detail"])
    assert REDACTED in str(out["detail"])


def test_bearer_tokens_in_free_text_are_masked() -> None:
    out = redact({"event": "req", "detail": "Authorization: Bearer eyJhbGciOiJIUzI1NiJ9.x.y"})
    assert "eyJhbGciOiJIUzI1NiJ9" not in str(out["detail"])


def test_diagnosis_output_is_treated_as_sensitive() -> None:
    out = redact({"event": "report", "dimensions": {"color_season": "浅暖柔和型"}})
    assert out["dimensions"] == REDACTED


def test_extra_keys_can_be_configured() -> None:
    out = redact({"event": "x", "custom_field": "secret"}, extra=("custom_field",))
    assert out["custom_field"] == REDACTED


def test_lists_are_traversed() -> None:
    out = redact({"event": "x", "items": [{"phone": "13800138000"}]})
    items = out["items"]
    assert isinstance(items, list)
    assert items[0]["phone"] == REDACTED