"""F5 — state.signals lifecycle (expires_at + cycle_id)."""
from datetime import datetime, timedelta
from zoneinfo import ZoneInfo

from ai_trade.state import PollState

KST = ZoneInfo("Asia/Seoul")


def test_initial_signal_cycle_id_is_zero():
    state = PollState()
    assert state.signal_cycle_id == 0


def test_get_active_signals_excludes_expired():
    state = PollState()
    now = datetime(2026, 5, 25, 10, 0, tzinfo=KST)
    future = (now + timedelta(seconds=300)).isoformat()
    past = (now - timedelta(seconds=60)).isoformat()
    state.signals = {
        "A": {"ticker": "A", "expires_at": future, "cycle_id": 1, "action": "buy"},
        "B": {"ticker": "B", "expires_at": past, "cycle_id": 1, "action": "buy"},
    }
    active = state.get_active_signals(now)
    tickers = [s["ticker"] for s in active]
    assert "A" in tickers
    assert "B" not in tickers


def test_get_active_signals_treats_missing_expires_as_expired():
    """expires_at 없는 legacy 신호는 expired로 간주."""
    state = PollState()
    now = datetime(2026, 5, 25, 10, 0, tzinfo=KST)
    state.signals = {"C": {"ticker": "C", "action": "buy"}}
    assert state.get_active_signals(now) == []


def test_purge_expired_signals_removes_expired():
    state = PollState()
    now = datetime(2026, 5, 25, 10, 0, tzinfo=KST)
    future = (now + timedelta(seconds=300)).isoformat()
    past = (now - timedelta(seconds=60)).isoformat()
    state.signals = {
        "A": {"ticker": "A", "expires_at": future, "cycle_id": 1},
        "B": {"ticker": "B", "expires_at": past, "cycle_id": 1},
    }
    removed = state.purge_expired_signals(now)
    assert "A" in state.signals
    assert "B" not in state.signals
    assert removed == 1


# ----- SIGNAL_TTL_SECONDS env -----

def test_signal_ttl_seconds_default(monkeypatch):
    monkeypatch.delenv("SIGNAL_TTL_SECONDS", raising=False)
    from ai_trade.config import Settings
    s = Settings()
    assert s.signal_ttl_seconds == 300


def test_signal_ttl_seconds_env_override(monkeypatch):
    monkeypatch.setenv("SIGNAL_TTL_SECONDS", "60")
    from ai_trade.config import Settings
    s = Settings()
    assert s.signal_ttl_seconds == 60