"""Tests for RoutingKeyGenerator."""

import os
from datetime import datetime, timezone

from i2p_netdb.routing_key import RoutingKeyGenerator


def test_deterministic_same_date():
    rkg = RoutingKeyGenerator()
    key = os.urandom(32)
    rk1 = rkg.get_routing_key(key)
    rk2 = rkg.get_routing_key(key)
    assert rk1 == rk2
    assert len(rk1) == 32


def test_different_keys_different_routing():
    rkg = RoutingKeyGenerator()
    rk1 = rkg.get_routing_key(b"\x01" * 32)
    rk2 = rkg.get_routing_key(b"\x02" * 32)
    assert rk1 != rk2


def test_mod_data_format():
    rkg = RoutingKeyGenerator()
    # Should be YYYY-MM-DD format
    mod = rkg.mod_data
    assert len(mod) == 10
    # Verify parseable as date
    datetime.strptime(mod.decode("ascii"), "%Y-%m-%d")


def test_generate_returns_false_same_day():
    rkg = RoutingKeyGenerator()
    # Already initialized with today's date
    assert rkg.generate_date_based_mod_data() is False


def test_time_till_midnight_positive():
    rkg = RoutingKeyGenerator()
    ttm = rkg.get_time_till_midnight_utc()
    assert 0 < ttm <= 86400


def test_last_changed_set():
    rkg = RoutingKeyGenerator()
    assert rkg.last_changed > 0