from datetime import datetime, timedelta
from django.utils import timezone
from tracker.services.validation import validate_event, sanitize_url

NOW = timezone.now()

def _ev(**kw):
    base = dict(event_id="e1", event_name="page_view",
                occurred_at=NOW, path="/p", title="t", properties={})
    base.update(kw)
    return base

def test_ok_event():
    assert validate_event(_ev()) is None            # None = 通过

def test_unknown_event_name():
    assert validate_event(_ev(event_name="xxx")) == "event_name_not_allowed"

def test_sensitive_property_rejected():
    r = validate_event(_ev(properties={"user_password": "1"}))
    assert "sensitive" in r

def test_shape_type_and_whitelist():
    assert validate_event(["x"]) == "event_invalid_shape"
    assert validate_event(_ev(event_id=123)) == "invalid_event_id"
    assert validate_event(_ev(properties={"foo": "bar"})) == "property_not_allowed"

def test_too_many_props_and_long_string():
    r = validate_event(_ev(properties={f"k{i}": "v" for i in range(40)}))
    assert "properties" in r
    r = validate_event(_ev(properties={"referrer": "x" * 600}))
    assert "properties" in r

def test_future_and_stale_time():
    r = validate_event(_ev(occurred_at=NOW + timedelta(days=2)))
    assert "occurred_at" in r                        # 超窗拒绝
    assert validate_event(_ev(occurred_at=NOW - timedelta(hours=2))) is None  # 窗内迟到可收

def test_sanitize_url_drops_sensitive_params():
    u = sanitize_url("/p?email=a@b.com&token=x&id=3&utm_source=google&monkey=1")
    assert "email=" not in u and "token=" not in u and "utm_source=google" in u
    assert "monkey=1" in u          # fullmatch：含 key 子串的正常参数不误伤

def test_nested_sensitive_key_rejected():
    r = validate_event(_ev(properties={"utm": {"utm_a": 1, "user_password": "x"}}))
    assert "sensitive" in r         # utm 在 page_view 白名单内，嵌套敏感键仍须命中

def test_naive_datetime_rejected():
    assert validate_event(_ev(occurred_at=NOW.replace(tzinfo=None))) == "invalid_occurred_at"