"""장 마감 중 sleep이 개장(09:00)을 건너뛰지 않는지 검증 — ORB 수집 누락 방지."""
from datetime import datetime, timedelta

import pytest

from app.core import market_schedule as ms


def _at(monkeypatch, y, m, d, hh, mm):
    fake = datetime(y, m, d, hh, mm, tzinfo=ms.KST)

    class _DT(datetime):
        @classmethod
        def now(cls, tz=None):
            return fake if tz else fake.replace(tzinfo=None)

    monkeypatch.setattr(ms, "datetime", _DT)
    return fake


def test_seconds_until_open_same_day(monkeypatch):
    _at(monkeypatch, 2026, 9, 23, 8, 59)  # 수요일 08:59
    assert ms.seconds_until_market_open() == pytest.approx(60, abs=1)


def test_none_during_market_hours(monkeypatch):
    _at(monkeypatch, 2026, 9, 23, 10, 0)
    assert ms.seconds_until_market_open() is None


def test_skips_weekend(monkeypatch):
    _at(monkeypatch, 2026, 9, 25, 16, 0)  # 금요일 폐장 후
    secs = ms.seconds_until_market_open()
    nxt = datetime(2026, 9, 25, 16, 0, tzinfo=ms.KST) + timedelta(seconds=secs)
    assert nxt.weekday() == 0 and (nxt.hour, nxt.minute) == (9, 0)  # 다음 월요일 09:00


def test_sleep_never_overshoots_open(monkeypatch):
    """스케줄러가 쓰는 계산식이 개장을 넘겨 자지 않는다."""
    for hh, mm in [(8, 0), (8, 59), (7, 30), (6, 0)]:
        _at(monkeypatch, 2026, 9, 23, hh, mm)
        until = ms.seconds_until_market_open()
        sleep = 1800.0 if until is None else max(15.0, min(1800.0, until))
        assert sleep <= until, f"{hh}:{mm} — sleep {sleep}s가 개장({until}s 후)을 넘김"